Page 1 Operating instruction VS 3015 CT Pack Controller for transcritical CO2 systems Firmware V1.41 V1 08.11.2022 Doku 1.8...
Page 2 Copyright: All rights to any use whatever, utilisation, further development, forwarding and creation of copies remain with the Eckelmann AG company. In particular, neither the contract partners of Eckelmann AG nor other users have the right to distribute or market the IT programs/program parts or modified or edited versions without express written permission.
Page 3: Table Of Contents
Five safety rules according to DGUV Regulation 3................13 Electrostatic-sensitive components and control components (ESD) ..........14 2.5.1 ESD - Rules for handling and working ....................14 Abbreviations Used..........................14 System design VS 3015 CT .........................15 VS 3015 CT Functions..........................17 VS 3015 CT Function..........................20 Starting Characteristics........................20 5.1.1 First start ..............................20...
Page 4 5.4.4.4 Setpoint Shift via External Analogue Signal ...................37 5.4.4.5 Setpoint Shift via Humidity Sensor ......................38 5.4.5 Base Load Rotation..........................38 5.4.5.1 Base Load Rotation for Speed Controlled Compressors ...............38 5.4.6 Load shedding............................39 5.4.7 Emergency Power Mode ........................40 High-Pressure Regulation ........................41 5.5.1 Control algorithm for HP control ......................42 5.5.1.1 Neutral Zone HP-Control........................43...
Page 5 Heat Recovery Mode ..........................82 5.9.1 Activation of the HRC Mode ........................82 5.9.2 HRC Mode Swing Protection........................83 5.9.3 Setpoint Calculation in HRC Mode......................83 5.9.4 Changes to the Control Behaviour during HRC Mode ................85 5.9.5 HRC mode parametrisation........................85 5.10 LT compressor in booster mode......................88 5.10.1 Control algorithm with combined control ....................90 5.10.2...
Page 6 Updating the current Firmware......................135 VS 3015 CT Connection and Terminal Assignment ................138 Connector Pin Assignment .......................139 7.1.1 VS 3015 CT Basic Module Connector Pin Assingments ..............139 7.1.2 SIOX Extension Module Connector Pin Assignments ................140 Terminal Diagrams for Basic Module and SIOX ................141 7.2.1...
Page 7 Menu 7 Default Settings ........................208 10.1.9 Menu 8 Service Mode ..........................208 Decommissioning and Disposal .......................211 11.1 Decommissioning / Dismantling.......................211 11.2 Disposal ..............................211 Alarms and Messages VS 3015 CT ....................212 12.1 Message System ..........................212 12.2 Message Structure ..........................212 Firmware V1.41 V1 08.11.2022 7/219...
Page 8 13.2 Mechanical Data VS 3015 CT......................217 13.3 Mechanical Data SIOX Extension Module..................218 Part Numbers and Accessories VS 3015 CT..................219 14.1 Pack Controller VS 3015 CT / SIOX Extension Module..............219 14.2 Accessories for VS 3015 CT......................219 Firmware V1.41 V1 08.11.2022...
Page 9: Conventions
1 Conventions 1.1 Warning signs, symbols and text formatting used in this manual Explanation of the warning signs, symbols and text formatting used in this operating and service manual: • DANGER  DANGER Instructions with this symbol and/or the signal word DANGER warn the user of situations that will cause severe injury or death if the specified instructions are not observed! * •...
Page 10: Explanation Of Text Formatting
A general instruction consists of two elements: The symbol with text (including NOTICE, if applicable) and the text of the instruction: For example:  NOTICE The current operating manual is available online from the E°EDP (Eckelmann ° Electronic Documentation Platform) at www.eckelmann.de/elds. Firmware V1.41 V1 08.11.2022 10/219...
Page 11: Safety Instructions
2 Safety instructions This operating manual is part of the device. It must be kept in the vicinity of the controller as well as for future use so that it can be consulted when required. The operating manual must be available to the operating and maintenance personnel at all times in order to avoid operating errors.
Page 12: Disclaimer In The Event Of Non-Compliance
 ATTENTION Warning of damage to goods! In our experience, the transmission of fault messages is not yet functional during the putting into service (no internet connection, no telephone line installed, etc.). It is strongly recommended in such cases to monitor the controller via the CAN bus using a system centre, a store computer or an operator terminal and to enable the transmission of fault messages, for example using a GSM modem via a mobile telephone system.
Page 13: Intended Use
This controller has been designed exclusively for the intended use: The VS 3015 CT controller is designed for use as pack controller in commercial and industrial refrigeration facilities in accordance with the scope of functions and in accordance with the environmental conditions described in this operating manual.
Page 14: Electrostatic-Sensitive Components And Control Components (Esd)
Containers and worktops made of wood, metal or conductive plastics or paper bags 2.6 Abbreviations Used • DGUV Regulation 3 - Accident Prevention Regulation for Electrical Systems and Equipment (previously: BGV A3 - Employer’s Liability Association Regulation for Occupational Health and Safety) • DIN Deutsches Institut für Normung e.V. (German Standardisation Institute) • E°EDP/EDP Electronic Documentation Platform of Eckelmann AG • ESD Electrostatic-Sensitive Device • ESD Electro-static discharge (Electro Sensitive Devices) • IEC International Electric Committee •...
Page 15: System Design Vs 3015 Ct
3 System design VS 3015 CT The basic module of the pack controller for transcritical CO systems consists of an analogue module and a 2 ‾ digital input/output module. The controller has a modular design and can be extended with two SIOX extension modules:...
Page 16 VS 3015 CT Basic Module Digital inputs 24 x input 230 V AC Relay outputs 6 x normally open contact 230 V AC 4 x changeover contact 230 V AC Manual control switch manual override Analogue Inputs / Outputs 2 x input Pt1000 - 4-wire Pt1000 temperature sensor connection (room and outdoor temperature) 13 x input Pt1000 - 2-wire Pt1000 temperature sensor connection (e.g.
Page 17: Vs 3015 Ct Functions
4 VS 3015 CT Functions The functions in the CO booster system can be shown schematically as follows: Firmware V1.41 V1 08.11.2022 17/219...
Page 18 The pack controller includes the following functions for the refrigeration compressor pack and condenser: • Control functions • Regulation functions • Monitoring functions • Fault signals • Archiving of messages and operating data These functions include the following: Low-pressure control / compressor control •...
Page 19 Ejector control: • Control of up to 8 ejectors of which max. 8 gas ejectors and 3 liquid ejectors • Control of a small high-pressure valve connected in parallel to the ejector stages • Accumulator level monitoring • Monitoring the oil shortage in the oil collecting vessel Monitoring functions •...
Page 20: Vs 3015 Ct Function
5 VS 3015 CT Function 5.1 Starting Characteristics The following are distinguished for any start-up of the controller: • First start • Restart 5.1.1 First start The controller is reset to the factory settings during a first start.
Page 21: Configuration Of The Pressure Transmitters
• Safety chain Low-pressure control (LP) for one-circuit systems - as step or combined control • Load shedding • Emergency power operation • Base load rotation • Compressor monitoring • Safety chain High-pressure control (HP) for one-circuit systems •...
Page 22: Low Pressure Transmitter Z2 (Lp-Z2)
TRANSDUCER ID: XXXXX Description Input Default Dim. HP-Min XXX b Pressure for 4 mA or 0 V at the output of 0..2.0 HP pressure sensor HP-Max XXX b Pressure for 20 mA or 10 V at the output 100.0..200.0 140.0 of HP pressure sensor...
Page 23: Control Algorithm For Lp Control
• Combined control Control using a speed-regulated compressor in combination with one or more fixed-speed compressors The setpoint can be specified using different criteria, see chapter Setpoint Shift. The actual value is measured using a pressure transmitter with continuous current (4..20 mA) or voltage (0..10 V) output.
Page 24: Control Algorithm With Lp Step Controller
5.4.2 Control Algorithm with LP Step Controller The measured low pressure measured using an A/D converter is compared with the setpoint: (A) At a pressure greater than the actual value plus 0.5 times the neutral zone (NZ) and less than the actual value plus 1.5 times the NZ, the step switching mechanism actuates stages in the event of a positive pressure change.
Page 25: Neutral Zone With Compressor Step Control
5.4.2.1 Neutral Zone with Compressor Step Control Definition If the control variable t ) is within the range of the neutral zone, no changes are performed by the controller. The regulation setpoint is always in the middle of the neutral zone. Step controller The step controller shows the following behaviour in the neutral zone: •...
Page 26: Control Algorithm With Lp Combined Control
The basic time can be configured and is always constant. Variable Time The variable time can be configured and is variable. The value range is between 0 and the configured value (in seconds). The duration of the variable time is calculated depending on the control constant. An example for this with a basic time of 20 seconds and a variable time of 200 seconds.
Page 27: Switching On / Switching Off Of Fixed-Speed Compressors
+ i-factor * Control error Quota Quota Adjustment speed for compressor speed output A speed increase is performed using a ramp speed of max. 1 V/s, a reduction with max. 4 V/s. The correcting variable for the speed controller is calculated from the P-component and the I-component. Variable = P Quota Quota...
Page 28: Loading / Unloading Of Fixed-Speed Compressors During Operation With Capacity-Controlled Compressors
L.WorkFreq[Hz] = 35 Lower operating frequency: The minimum FC speed output by the pack controller is set here. This must be selected to be greater than or equal to the minimum frequency to be output by the FC. 5.4.3.2 Loading / Unloading of Fixed-Speed Compressors During Operation with Capacity- Controlled Compressors Combined control operating mode with non capacity-controlled fixed-speed compressors (parameter M.com.out.reg. = No) With capacity-controlled compressors the additional capacity stage is only used for the speed controlled compressor.
Page 29 Diagram of the example system Control behaviour of the example system The parametrised operating frequency range here is 35 Hz - 67 Hz, the parametrised capacity overlap is 10%. Using the capacity overlap parameter, it is possible to specify in percent (100% is equivalent to the capacity of a completely loaded compressor at 50 Hz) how much lower the capacity is following the loading of a compressor stage compared with before loading.
Page 30: Neutral Zone With Compressor Combined Control
which speed setpoint for the FC compressor is output following the loading / unloading of a compressor capacity stage. • M.com.out.reg. = YES This is used to specify that the stages of the fixed-speed compressors are switched on individually when using compressor combined control (capacity control of the fixed-speed compressors is active).
Page 31: Compressor Control Times For Compressor Combined Control
Menu Parameter Description Input Default Dim. 3-2-1-4 NZ speed con. Neutral zone night operation combined 1..6 control The parameter is only displayed if compressor combined control is configured. Loading of fixed-speed compressors Loading is performed when • the speed-controlled compressor has reached its maximum speed and •...
Page 32: Regulation Of A Pack With Different Size Compressors
Parametrisation of control times • The basic time and the maximum variable time for the shifting up (switching on) shifting down (switching off) can be configured for each capacity stage. • There are separate control time parameters for day and night operation with separate control constant in each case.
Page 33 Parametrisation Parameter Menu Value range Default Unit Description Qo assignment 3-2-1-1 YES / NO Parameter to assign an output to the compressors. If NO, all compressors are assumed to be the same size. ASSIGN Qo 3-2-1-1 Submenu Submenu in which a coefficient of performance is assigned to each compressor - the submenu is only visible if the "Qo assignment"...
Page 34 Example for the calculation of the compressor performance (all for 50 Hz) Configuration: 4 compressors Compressor 1: 12.0 m³/h Compressor 2: 17.8 m³/h Compressor 3: 17.8 m³/h Compressor 4: 25.6 m³/h Total flow volume: Vges = V1+V2+V3+V4 = 100% = 73.2 m³/h Compressor Flow volume Calculated proportion...
Page 35: Setpoint Shift
5.4.4 Setpoint Shift An optimally calculated setpoint for the operation can result in reduction of the energy costs. The determination of the t setpoint (setpoint shift) for the low-pressure control can be performed using the following operations in menu 3-2-1-2: •...
Page 36: Setpoint Shift - Demand-Dependent Via Consumer
and t can be parametrised. The air humidity can also be taken into account via the 0_max 0_min r_min r_max analogue input 7 (terminals 59/61). The setpoint for the pressure for the actual regulation is determined from a conversion table stored in the firmware.
Page 37: Setpoint Shift Via Can Bus
Behaviour in the event of a fault • CAN bus fault of individual nodes If no telegram is received from a specific case controller for a time period greater than the timeout for load level reception, the associated case controller is not considered for the to-shift until the receipt again of the corresponding telegram.
Page 38: Setpoint Shift Via Humidity Sensor
5.4.4.5 Setpoint Shift via Humidity Sensor  If a demand-dependent setpoint shift (menu 3-2-1-2) has been selected, this parameter is not active / visible. It can be set using the humid. adapt. parameter (menus 3-2-3 and 3-2-4) whether the t setpoint should also be adjusted depending on the air humidity. The signal for air humidity can be accepted either from the humidity sensor or via the CAN bus from another pack controller (see chapter Ambient Data for Setpoint Switching).
Page 39: Load Shedding
activated on the speed controller following expiry of the cycle time or when all compressors are idle via a relay output of the controller according to the following sequence. Base load rotation with 2 running compressors (C1 + C2) Base load rotation with 1 running compressor (C1 or C2) Reduce speed to minimum value Disconnect compressor from the mains power supply...
Page 40: Emergency Power Mode
In the case of single-stage compressors, the compressor with the highest operating time is always unloaded. In the case of capacity-controlled compressors, the compressor which is not loaded to 100% is unloaded. If all compressors are loaded to 100%, the compressor with the highest operating time is unloaded. Independently from the load shedding signal, a minimum refrigeration capacity must be guaranteed which requires a minimum number of enabled compressors.
Page 41: High-Pressure Regulation
5.5 High-Pressure Regulation The high-pressure is regulated in the controller using a high-pressure valve. The valve is actuated using an 0...10 V signal via the analogue output 3 (terminals 57/58). The control variable, high pressure pc, is measured using a continuous pressure transmitter with linear characteristic at the analogue input 4 (terminals 44/45).
Page 42: Control Algorithm For Hp Control
5.5.1 Control algorithm for HP control The control variable, the high pressure, is measured by a continuous sensor with current output / voltage output in the high pressure line. The high pressure measured via an A/D converter is compared with the setpoint. The following applies: ...
Page 43: Neutral Zone Hp-Control
HP valve for all compressors OFF If all compressors are unloaded (e.g. by the controller, due to fault in the safety chain or by the digital input "Fast Unload"), the regulation of the high pressure using the HP valve can be deactivated. The parameter "HPV off w/comp"...
Page 44: High Pressure Setpoint Determination
5.5.1.2 High Pressure Setpoint Determination The controller calculates a setpoint for the gas cooler outlet temperature depending on the outdoor temperature for the fan control. An optimal HP setpoint depending on the gas cooler outlet temperature is also calculated that is used for the regulation of the high pressure using a continuous high pressure valve.
Page 45: Hp Control With Ejectors
The consequence: There is little to no refrigeration capacity still available in the system! 5.5.2 HP control with ejectors It is possible to control gas and liquid ejectors with the VS 3015 CT pack controller. Firmware V1.41 V1 08.11.2022...
Page 46 Firmware V1.41 V1 08.11.2022 46/219...
Page 47 The high pressure (HP) is controlled by the gas ejectors and at the same time the NT compressors are relieved and can therefore be selected smaller. The relief is achieved by the fact that the refrigerant (mass flow) of the NT evaporator (consumer) is drawn in or evacuated via the accumulator (liquid separator) and finally via one or more ejectors.
Page 48 Parametrisation The following parameters are required for the ejector control: Menu Parameter Description Input Default Dim. 3-2-2-4 Use Gas-Ej. Gas ejector operation 3-2-2-4 Operation Mode Mode of the gas ejector operation: 0: Thresholds 0 → Thresholds: using thresholds of the small high pressure valve 1: Ejector and unknown ejector sizes Sizes 1 → Ejector size: using global opening degree and parametrisation ...
Page 49 Menu Parameter Description Input Default Dim. 3-2-2-4 Enabling by MP Enable gas ejectors by parallel compressor 3-2-2-4 Enabling by SP Enable gas ejectors by NT compressor 3-2-2-4 Oil Return Activation of the oil return function 3-2-2-4 Dur. Oil-return Oil return time 1...360 sec.
Page 50 Features of the ejector control Different system types are Two types of parametrisation and control of the gas ejectors are supported: supported • In operating mode 0, ejectors are not switched on and off according to their size, but via thresholds of the small high-pressure valve.
Page 51: Loading And Unloading Behaviour Of The Ejectors
5.5.2.1 Loading and unloading behaviour of the ejectors The ejectors are controlled every second. The way in which the ejectors are switched on and off depends on the set operating mode. 1. Gas ejectors Operating mode: Thresholds In the "Thresholds" operating mode, the gas ejector stages are switched on and off when the control value of the small high-pressure valve exceeds or falls below the threshold by the differential value (parameter "Switch Delta").
Page 52 Number of gas ejectors: 3 ejectors have the same size: YES Firmware V1.41 V1 08.11.2022 52/219...
Page 53 Operating mode: Ejector Sizes In the operating mode "Ejector size" the gas ejector stages are switched on and off when the sum of the sizes of the small high-pressure valve and the ejectors already switched on (corresponds to the global opening degree of the high-pressure valve) exceeds or falls below the size of the next ejector stage by the differential value (parameter "Switch Delta").
Page 54 2. Liquid ejectors Operating mode: Control of the accumulator fill level (parameter "Acc. Level Ctrl" set to YES) The liquid ejector stages are switched on and off with the delay time (parameter "Delay FIEj.") if the refrigerant level exceeds or falls below the corresponding accumulator level switch. After the penultimate accumulator level switch has been exceeded, the remaining liquid ejector stages are switched on after the waiting time has elapsed (parameter "Waiting time LE ON").
Page 55: Gas Cooler Outlet Temperature Regulation
(Gas cooler control via relay outputs). 5.6.1 Gas cooler control via relay outputs Requirements for the VS 3015 CT for control of the gas cooler fans via the relay outputs: • DIP switch 4 must be configured to OFF •...
Page 56 to the control via the relays. The fan relays and their manual control switches on the basic module and the SIOX are then available for other functions. Example: Control of 12 ebm-papst fans in two-row gas cooler packages (A) as compared with 4 fans that are controlled via relays (B) - here the basic module with 1 SIOX extension module: For details about the pin assignment of the Modbus, see chapter Connector Pin Assignment for CAN-Bus,...
Page 57 Commissioning of ebm-papst fans 1. The following possibilities are available for finding the fans: • Partial Search e.g. after replacement of a defective fan Condition: the new fan must have the Modbus address 1 (factory setting). If this is not the case, the Manual Search (recommended) or the Complete Search must be performed.
Page 58 Example with 4 fan stages and a two-row gas cooler package: • Modbus address allocation is performed automatically (not configurable), the fan with the lowest serial number always obtains the address 10 etc. • Switching order is performed automatically, the fan with the lowest address obtains the switching order 1 etc.
Page 59 5. Emergency operation function of an ebm-papst fan Each ebm-papst fan has its own emergency operation function (refer to the manual of the ebm-papst fans for details). The emergency operation function is always activated for every fan automatically by the pack controller via the Modbus and is configured as follows: •...
Page 60 7. Manual Mode In manual mode, the fans can be controlled between 0..100% during the normal operation (menu 3-2-2-1 "EBM Manual Run"). The message "EBM Manual Run" is output if manual mode is activated. Manual mode is automatically deactivated after 60 minutes for the system safety. Configuration Menu Parameter...
Page 61: Temperature Sensors For The Regulation
5.6.3 Temperature Sensors for the Regulation There are two Pt1000 temperature sensors for the regulation of the gas cooler outlet temperature that are recorded in the measuring range of -50 °C to +50 °C • (terminals 31/32) and •...
Page 62: Neutral Zone Fan Control
5.6.4 Neutral Zone Fan Control Step control  There is no switching of the fan stages in a configurable neutral zone with step control. This neutral zone is configurable (parameter Neutr.zone F, see menu 3-2-2-2). The neutral zone has no function for continuous control (speed control, stages combined control, parallel combined control).
Page 63 Any further switching is only performed if a specific time for the flow or return has elapsed and the control error has exceeded a specified value (neutral zone). The time depends on the actual control error. In the case of larger control error, the switching is performed after a shorter time than for smaller control errors.
Page 64: Fan Motors - Star-Delta Switching
If the gas cooler outlet temperature is regulated using the step controller, the number of running compressor stages is output via the fan speed analogue output according to the following equation: 5.6.5.2 Fan Motors - Star-Delta Switching The relay stages of the gas cooler outlet temperature regulation can be used for star-delta switching of the fan motors for the controller.
Page 65 Switching mode Pos:xxxx Input Default Default NT operation LT operation KKGG Fans start one after the other at low speed ↑↓ (K) and then switch one after the other to the high speed (G) KKKG Fans start one after the other at low speed ↑↓...
Page 66: Control Algorithm Tg With Speed Control
The fans are also loaded one after the other with the KKKG switching mode. This results in all fans being loaded at low speed (star operation). Afterwards, all fans are switched to the high speed (delta operation). All fan outputs are unloaded simultaneously when shifting down the capacity stages. Afterwards, all fans are loaded again one after the other at the low speed after a configurable time delay.
Page 67 In the case of a negative control error, the speed controller is disabled using the first fan output F1 of the controller if the speed has reduced to 0. If a minimum speed > 0 of the speed controller is entered using the Min.
Page 68: Control Algorithm Tg With Parallel Combined Control
5.6.7 Control Algorithm tG with Parallel Combined Control The gas cooler outlet temperature measured via an A/D converter is compared with the setpoint. The following applies: A speed setpoint, depending on the control error, is calculated using a PI control algorithm that is switched to the speed controller via an analogue output (0-10 V).
Page 69 speed controlled fans to mains power operation (see also Start-up of speed-controlled condenser fans / compressors). The following diagram shows the speed sequence for starting using the example of a system with five fans: In the case of a negative control error, the speed of all loaded fans is reduced to the minimum speed + 20%. If the gas cooler outlet temperature remains below the setpoint, fan stages are switched off at intervals.
Page 70: Control Algorithm Tg With Stage Combined Control
5.6.8 Control Algorithm tG with Stage Combined Control The gas cooler outlet temperature measured via an A/D converter is compared with the setpoint. The following applies: A speed setpoint, depending on the control error, is calculated using a PI control algorithm that is switched to the speed controller via an analogue output (0-10 V).
Page 71 In the case of a negative control error, the speed is reduced by the PI controller. If the minimum speed is reached, a fan capacity stage is unloaded after a time delay and the speed is increased to the maximum value at the same time.
Page 72: Setpoint Calculation Tg
operates as a step controller with the steps 2 to n-1. The following maximum numbers of stages can be disabled or enabled: • Fan Control via Modbus : 11 fan stages • Fan control via relays, requiring one SIOX extension module: 3 fan stages The stage No.
Page 73: Protection Of The Fan Motors / Fan Motors Base Load Rotation
• Speed control • Parallel combined control • Stages combined control The following applies for the calculation: = speed controller setpoint (0..10 V) Soll = proportional component of the controller Anteil = integral component of the controller Anteil Offset= offset for fan speed input signal (parameter Offset, see menu 3-2-2-1) The controller reacts directly to control errors with the P-component.
Page 74: Kickstart
and unloaded sequentially but according to the operating time. If a fan must be loaded, the fan with the shortest operating time is switched on. If a fan must be unloaded, the fan with the longest operating time is switched off.
Page 75: Control Algorithm For Mp Control
5.7.1 Control Algorithm for MP Control The medium pressure measured via an A/D converter is compared with the setpoint. The input signal for the MP control valve is calculated using a PI controller. The amplification factors for the P- component (parameter p-factor, menu 3-2-3) and the I-component (parameter i-factor, menu 3-2-3) can be adjusted. ...
Page 76 Menu Parameter Description Input Defa Dim. 3-2-3 MP Max Upper limit for MP, HPV will be closed if exceeded 10..60 3-2-3 dPm HP-V.Close P-range for forced closing of the HPV in the case of exceeding the 0..20 maximum medium pressure setpoint Firmware V1.41 V1 08.11.2022 76/219...
Page 77: Medium Pressure Compressor
5.7.3 Medium Pressure Compressor The medium pressure can be regulated in the controller using so-called parallel compressors whose intake side is connected to medium pressure. These compressors are referred to below as medium pressure compressors (abbreviated as "MP compressor"). The following diagram shows the position of an MP compressor. Advantages of the MP compressors Instead of conveying the refrigerant via a medium pressure valve from the medium pressure side to the intake side of the HP compressor, it is more energy-efficient with MP compressors to pump the refrigerant directly to...
Page 78: Control Of The Mp Compressors
• A Modbus analogue module (part number MODBAOUT02) must be connected to control the frequency- controlled MP compressor (see Terminal assignment of the Modbus analogue module 0..10 V • The following configuration must be made: - Menu 3-1: Configuration of the MP compressors - Menu 3-2-3 and menu 3-2-5: Configuration of the regulation - Menu 3-3: Configuration of the monitoring functions 5.7.3.2 Control of the MP Compressors...
Page 79 System configuration Parameter Menu Input Default Dim. Description Par. compr. Using this parameter, the control of the parallel compressors and the Modbus communication with the external Modbus analogue module with 4 analogue inputs 0..10 V (part number MODBAOUT02) is activated. No.
Page 80 Parameter Menu Input Default Dim. Description MPV offset 3-2-5-2 0.0...10.0 This offset is added to the MP setpoint for the medium pressure valve if at least one parallel compressor is running. At full capacity, the offset is reduced to relieve the MP compressors. EnableLimit 1 3-2-5-2 0...100...
Page 81 Parameter Menu Input Default Dim. Description PC to Comp OFF -20...20 °C Limit value for to, starting from which all parallel compressors are unloaded. PC Starts/h 4...16 The switching frequency of a compressor is only monitored. An alarm is signalled if any stage has been switched on for longer than the set value within one hour.
Page 82: Control Of The Minimum Superheat Using A Hot Gas Bypass Valve
5.8 Control of the minimum superheat using a hot gas bypass valve The controller can control a hot gas bypass valve via a Modbus relay module (DO3), see chapter Terminal assignment of the Modbus relay module 230 V AC.
Page 83: Hrc Mode Swing Protection
5.9.2 HRC Mode Swing Protection In order to prevent the HRC mode being frequently activated / deactivated in the event of any cycling of the HRC input signal (digital input 21, terminals 90/91), the HRC mode is disabled after ending the HRC mode for a configurable time using the parameter Off Time HRC (menu 3-2-2-3). An error message is also output in the ...
Page 84 The external signal for HP setpoint shift is measured here via the analogue input 6 (terminals 50/51/52): • If there are 0 volts between the terminals 51 (+) and 52 (- or earth), the HP setpoint entered using the parameter HP-Min.HRC is used.
Page 85: Changes To The Control Behaviour During Hrc Mode
5.9.4 Changes to the Control Behaviour during HRC Mode Some functionality is handled differently in HRC mode. The key points are listed below. Monitoring • No high pressure fault is reported. • No compressor disable / unload in the event of high-pressure fault (except for exceeding HP EMERG.-OFF). The HRC mode is shown on the display of the system centre or operator terminal, see also Anzeige der Betriebszustände.
Page 86 Parameter Menu Entry Default Dim. Description HD-Max.WRG 3-2-2-3 70...120 Maximum HP setpoint in HRC mode. The parameter is used for the shift via the analogue input. Max. limit value for the HP setpoint that is transmitted via the CAN bus.
Page 87 Parameter Menu Entry Default Dim. Description Gask.Drehz.WP 3-2-2-3 0...100, -- Speed specification in HR mode when the heat pump is active => gas cooler 100% bypassed. For "--", this function is not active Firmware V1.41 V1 08.11.2022 87/219...
Page 88: Compressor In Booster Mode
5.10 LT compressor in booster mode In addition to the regulation of the transcritical CO refrigeration circuit, it is possible to control LT compressors in booster mode with only one controller. When setting up refrigeration systems, a distinction is made between normal and booster operation modes. In normal operation, the refrigeration circuits of different evaporator levels are operated in completely independent systems.
Page 89 high-pressure line. The refrigeration points are supplied from one common condenser receiver. In a booster system (see below for the requirements and parametrisation for booster operation), the NT and LT refrigeration points are supplied by a common liquid line. The refrigerant of the refrigeration points (Z2 circuit) is drawn in by the LT compressors.
Page 90: Control Algorithm With Combined Control
Configuration The following parameters are required for the configuration and monitoring of the LT compressors. The LT compressors transfer the refrigerant from the LT suction side to the NT suction side. Parameters for regulation and for the loading and unloading times in booster mode are explained in the appropriate subchapters. The following parameters are required for the control of the LT compressors.
Page 91: Compressor Switching And Standstill Times
Parameter Description Input Defau Dim. FU-Rampe Ramp for the actuating signal of the frequency converter 0.1..5,0 1,0 Example: With a parameter setting of 1, the rate of change of the FC actuating signal is 0.1 V/ Attention! The set value is reduced by a factor of 10! ...
Page 92 High-pressure monitoring If the actual value of p is less than 2 bar below the configurable limit value ND Max. (menu 3-3), a reduction of the FC speed is first performed. A compressor shutdown is performed if p exceeds the limit value for ND Max.
Page 93: Oil Return
5.11 Oil Return The oil return function can be activated using the Oil return parameter (menu 3-2-2-4). A solenoid valve is controlled for this. The solenoid valve is controlled via the relay output 2 of the Modbus module MR-DOA4. A time window (parameter Interval, menu 3-2-2-4) and the duration of the oil return can be varied (parameter Dur.
Page 94: Monitoring Of Differential Oil Pressure Switch / Compressor High Pressure Limiter
Due to their arrangement in the safety chain, when a high priority safety contact (e.g. high pressure limiter) is tripped, all lower priority alarm contacts are deenergised and thus active. The sending of low priority alarm signals at the same time when a higher priority alarm event occurs is locked so that all secondary alarms are not sent by the pack controller in this case.
Page 95 The monitoring of the motor overload cut-out can be activated / deactivated with the parameter "Mot.cutout C" (motor overload cut-out available) using menu 3-1. If the motor overload cut-out is deactivated, the parameter "Motor protect. Y/N" is not displayed and not evaluated. ...
Page 96: Cylinder Head Temperature Monitoring
5.12.2 Cylinder Head Temperature Monitoring The compressor cylinder head temperature is monitored with respect to an upper maximum value in order to prevent damage to the compressor. The maximum cylinder head temperature that results in disabling a compressor and the enabling value must be specified using the parameters "Comp. OFF temp" and "Comp. ON temp".
Page 97 In the event of any fault on any of the compressors that can be assigned to the frequency converter (compressors 1 and 2), a compressor switch-off is performed and the generation of a signal depending on the state of the base load rotation output (relay output "FC compressor switching", see VS 3015 CT Connection and Terminal Assignment).
Page 98: Low Pressure Monitoring
Fault on Base load rotation output Relay stages OFF output Message Stage 4, stage 5, stage 6 5.12.3 Low Pressure Monitoring If the low pressure falls to a configurable limit value (menu 3-3 to AUS Verd), all compressors are switched off. If the low pressure rises to the proportional t setpoint + NZ/2 pressure value, the compressors are activated stage by stage as already described.
Page 99: High Pressure Monitoring Too Low
generated after a configurable time delay. The priority of the signal can be configured High HP (menu 3-7). No signal is generated In the heat recovery mode. In the event of any pending HP fault, no additional compressor output stages are switched on. 5.12.4.2 High Pressure Monitoring Too Low The system high pressure should be in a specific range during normal operation of the system. In addition to the high pressure too high monitoring, the high pressure is also monitored for undershooting a lower limit value: In the event of undershooting Low HP, the signal HP too low is output after expiry of a configurable signal delay time using the parameter Del.
Page 100: Monitoring Of The Medium Pressure
It can be established with the alarm whether • the controller is correctly configured for the high pressure regulation. For example, the max. input signal of the HP valve has been configured incorrectly. • there is any basic problem in the system. For example: the HP valve in the system has a defect. The alarm delay is reset •...
Page 101: Monitoring Of The Speed Controller
5.12.8 Monitoring of Minimum Superheat The minimum superheat can be monitored using two functions: • Compressed gas cooler (can be controlled via VS 3015 CT or VS 3010 (configured as LT) • Suction gas post-injection Both functions are controlled via the relay output 10 (terminals 3/4). The desired function can be configured in menu 3-3.
Page 102 gas post-injection is controlled via relay output 1 of the Digital Module. Use of the Digital Module relays can be configured in menu 3-3. Compressed gas cooler The controller monitors the suction gas superheat to prevent wet operation. Too low suction gas superheat is registered in the fault memory and transferred to an appropriate alarm destination according to priority preselection.
Page 103 Enable of the injection valve for hot gas temperature or cylinder head temperature • The suction gas injection is activated if the hot gas temperature (alternatively cylinder head temperature) exceeds a configurable threshold value. • In order to prevent cycling of the valve, hysteresis is provided (difference downward from threshold value, configurable) •...
Page 104 Enable of the injection valve for suction gas temperature too high • The suction gas injection is activated if the superheat exceeds a threshold value (configurable) • In order to prevent cycling of the valve, hysteresis is provided (difference downward from threshold value, configurable) •...
Page 105: Monitoring Of The Gas Cooler Outlet Temperature
5.12.9 Monitoring of the Gas Cooler Outlet Temperature The chapter Gas cooler outlet temperature regulation describes the existence of two gas cooler outlet temperature sensors. These are monitored as follows. Gas cooler outlet temperature sensor t The Pt1000 temperature sensor is monitored for short circuits and interruption. The priority of the message Meas err.gas.out can be set in menu 3-7.
Page 106: Monitoring Of The Switching Frequency
5.12.10 Monitoring of the Switching Frequency The number of compressor switching operations per hour is limited to prevent too high switching frequency of the compressors. Limitation of the switching frequency: It is determined using the parameter Starts/h (menu 3-4) at which minimum time intervals a compressor can be switched on.
Page 107: Refrigerant Monitoring
 The deactivated switching frequency limitation for speed-controlled compressors is activated again in the event of any FC error. 5.12.11 Refrigerant Monitoring The liquid level in the installation is monitored by a refrigerant level sensor connected to digital input 23 (terminals 94/95).
Page 108: Accumulator Fill Level Monitoring
5.12.14 Accumulator fill level monitoring The maximum liquid level of the accumulator is monitored by a refrigerant level sensor connected to digital input 4 (terminals 56/57) of the SIOX ejector. If this is reached, an alarm is signalled with the message 248 "Max Acc.
Page 109: Spray System Control
Possible causes of failure are • Tripping of the HP cutout • Tripping of all motor overload cutouts • High-pressure cutouts of all compressors • Manual shutdown of all compressors No consumer lockout is performed for any suction pressure fault due to too low suction pressure or tripping of the LP monitor.
Page 110: Cop
Measured gas cooler outlet temperature Calculated setpoint for gas cooler outlet temperature depending on the outdoor temperature. Gsoll The parameter Min. ON S1 xxm determines the minimum switch-on time for the first stage. If the first stage is loaded, it remains switched on for the programmed minimum operating time independent of the gas cooler temperature.
Page 111: Cop Optimisation
A detailed description of the required settings and parameters can be found online on our E°EDP documents platform at https://edp.eckelmann.de/edp/lds/_AzMqeNOO3W. 5.17.2 COP Optimisation Only for combined control where parameter M.com.out.reg. = No, see menu 3-2-1-1. The efficiency of the system depends on the compressor speed. In order to prevent the system from running...
Page 112: Daily Run Times, Switching Pulses And Switch-On Rates
5.18.2 Daily Run Times, Switching Pulses and Switch-On Rates As well as the operating hours, the run times, switching pulses of the compressors per day and the switch-on rate (utilisation) of the pack are recorded daily and stored with date (menu 6-2). The data are archived in the pack controller for a period of 32 days and the display is shown in hours and minutes.
Page 113: Vs 3015 Ct Installation And Start-Up
If the device is used in any way not specified by Eckelmann AG, the protection supported by the device can be compromised! The system centre, the operator terminal and the PC software LDSWin are used for the configuration of the controller for the start-up and for later changes.
Page 114 The following default settings must be configured using the switches S1 and S2: 1. DIP switch S1 Coding switch Function Not used Activation of a SIOX extension module Activation of the SIOX extension module for ejector operation Activation of ebm-papst fans Not used 6 and 7 Firmware update mode...
Page 115: Siox Extension Module - For Din Rail Mounting
ATTENTION Only SIOX extension modules with manual control switch may be connected, see chapter Pack Controller VS 3015 CT / SIOX Extension Module. SIOX extension modules without manual control switch are not authorised! The modules are connected to the pack controller via SIOX power supply cables and SIOX data cables, see...
Page 116 Example of a pack controller configuration with two SIOX extension modules  ATTENTION Danger of destruction of components! The connection of SIOX extension modules with each other or to the controller may only be performed when no voltage is present! In the event of any mix-up of the SIOX data cable (RJ45) with an Ethernet network cable with PoE (Power over Ethernet), involved network devices can be damaged! SIOX power supply cables...
Page 117: Siox - Status Leds
6.2.1.2 SIOX - Status LEDs  DANGER Warning about dangerous electrical voltage! Danger of electric shock! The device must never be operated without its case. Before opening the case, the device must be disconnected from the power supply ...
Page 118 Up to 12 ebm-papst fans can be controlled via Modbus with the basic module. Either only the Modbus fans or only the relay fans can be used. DIP switch S1 Switch positions Pack type Coding switch 2 1 external SIOX extension module •...
Page 119: Setting The Can Bus Address Via Decade Switch S2
DIP switch S1 Switch positions Firmware update Coding switches 6 and 7 mode Normal operation Firmware update mode, for more details, see chapter Firmware Update  ATTENTION DIP switch S1 coding switches 6 and 7 may only be set to OFF for firmware update purposes.
Page 120 No. Function SHIELD GROUND - green CAN-LOW - brown CAN-HIGH - white Firmware V1.41 V1 08.11.2022 120/219...
Page 121: Settings For Rs485/Tty Interface Via Jumper J1
6.2.4 Settings for RS485/TTY Interface via Jumper J1 Setting of the interface The jumper J1 specifies the function of the interface. Jumper J1 Jumper position Interface Function Left RS485 active Factory setting (terminals 13/14/15/16) Right TTY active currently has no function (terminals 9/10/11/12) For details, see chapter Connector Pin Assignment for CAN-Bus, SIOX and Interfaces...
Page 122: Power Supply
6.2.7 Power Supply  DANGER Warning of dangerous electrical voltage! Danger of electric shock! BEFORE connection and disconnection it must be checked that the 230 V AC power supply cable is disconnected from the power supply! The pack controller is connected to the power supply cable at the top right N/L/PE terminal block; for further details, see chapter Terminal assignment of the 230 V AC power supply:...
Page 123: Default Parameter Settings
Off Power supply interrupted or device defective  For details about the exact terminal assignment, see VS 3015 CT Basic Module Connector Pin Assingments. 6.3 Default parameter settings The parameters listed below must be adjusted in the corresponding operating screens of the controller: System configuration parameters (menu 3-1) •...
Page 124: Start-Up Of Speed-Controlled Condeser Fans / Compressors
 For transmitters with voltage output, the corresponding jumpers must be implemented on the controller (see chapter Configuration of the analogue inputs and outputs)! Analogue inputs in the pack controller are preconfigured as current inputs (4..20 mA) at the factory. The following parameters are used for adjusting the controller to the pressure transmitter: •...
Page 125 controllers. In the case of inadequate shielding, high impairments of the measured values can occur due to the high interference emission of FCs / speed controllers. Care must be taken with all analogue inputs and outputs that there is no connection between the sensor cables and the signal ground or shielding.
Page 126: Procedure For The Start-Up Of A System
6.4.1 Procedure for the start-up of a system  ATTENTION The following circuit diagrams are simplified diagrams from the controller to the FC (using the example of the smd series from Lenze) and to the speed controller (using the example of the ADR series from Micro Nova).
Page 127 Example for NT compressor:  This fault signal is active when there is no voltage at the NT / MP motor cutout 1 / FC Fault input, i.e. the frequency converter must be parametrised and connected so that 230 V AC is present at the digital input 4 of the pack controller in the good state.
Page 128 3. Analogue compressor speed / fan speed correcting variable A. Correcting variable output for fan speed In the case of continuous control, a 0-10 V signal for the speed of the fans is output via the analogue output 2 of the Modbus analogue module (terminals C2/2 see Terminal assignment of the Modbus analogue module 0..10 DC). B. Correcting variable for compressor speed output In the case of compressor combined control, a 0-10 V signal for the speed of the speed-controlled NT compressor is output via the analogue output 2 of the basic module (terminals 55/56).
Page 129 controller here must be operated in the speed control operating mode, i.e. the output speed of the fans / compressors is directly proportional to the output voltage from the pack controller. 4. Relay output for power supply bridging ...
Page 130 5. Relay output for the base load rotation of the speed-controlled compressor for compressor combined control As the speed-controlled compressor in the combined control type of control shows the longest operating time, base load rotation of the speed-controlled compressor is performed as well as the base load rotation of the fixed-speed compressors.
Page 131: Commissioning Fan Control Via Modbus
6.5 Commissioning fan control via Modbus 1. Preparation a. Check jumper J1 of the pack controller and swap to RS485 if necessary. b. Note serial numbers of the fans and desired switching order.  Backup setpoints of the controller using the LDSWin PC software or make a note of them as the pack controller performs a first start! 2.
Page 132 b. Switch off control voltage of the controller and then switch on again. The pack controller now performs a first start and detects the fans connected to the Modbus. The process takes about 45 seconds. c. Restore backed up setpoints to the pack controller using LDSWin or configure the previously noted values. d.
Page 133: Battery Replacement
No battery replacement for the controller by the user is envisaged as the battery service life is designed for greater than 10 years. If the "battery voltage" message is displayed, the controller must be sent to Eckelmann AG to guarantee correct replacement of the battery. Opening the device is not authorised, see chapter...
Page 134: Firmware Update
6.7 Firmware Update The controller is delivered with the current firmware, ready for operation. Future software releases (e.g. with extended range of functions) can be loaded via a firmware update to update the controller.  ATTENTION Damage to the installation and stock loss! Before the firmware update, the affected system component or the system must be brought into a safe state as the shutdown of the controller during the firmware update can have undesired effects on the system component and/or the system.
Page 135: Updating The Current Firmware
6.7.2 Updating the current Firmware The file "vs3015ctvXXX.exe" (E) for the firmware update is available in the EDP at https://edp.eckelmann.de/ edp/lds/_06ec586hZi and may have to be unpacked from the ZIP archive before use. The firmware update is performed using a notebook (or PC) that is connected to the controller via the COM port interface (RS232). The following steps must be strictly performed and observed during the firmware update:...
Page 136 The following screen opens: 7.Press Enter (RETURN) key. The following screen opens: 8. Now switch on the controller again. Then start the download by pressing the Enter (RETURN) key:  The bar at the bottom indicates the progress of the download. Firmware V1.41 V1 08.11.2022 136/219...
Page 137 9. After completion of the download, press the Enter (RETURN) key: 10. Set DIP switch S1 coding switches 6 and 7 to ON again: 11. The controller must be disconnected from the power supply for a short time after the firmware update.  ATTENTION In normal operation, the coding switches 6 and 7 of the DIP switch S1 are always in the ON position! After changing the switch positions of both S1 and S2, the controller must be disconnected from the power supply for a short time so that the new settings will be adopted!
Page 138: Vs 3015 Ct Connection And Terminal Assignment
7 VS 3015 CT Connection and Terminal Assignment The illustrations and tables show the terminal assignments for the pack controller and its SIOX extension modules. A detailed description of the connection and terminal assignment of the controller and its components is shown below.
Page 139: Connector Pin Assignment
7.1 Connector Pin Assignment 7.1.1 VS 3015 CT Basic Module Connector Pin Assingments  DANGER Warning of dangerous electrical voltage! Danger of electric shock! BEFORE connecting and disconnecting, it must be ensured that no voltage is present at all connections of the controller.
Page 140: Siox Extension Module Connector Pin Assignments
7.1.2 SIOX Extension Module Connector Pin Assignments  DANGER Warning of dangerous electrical voltage! Danger of electric shock! BEFORE connecting and disconnecting, it must be ensured that no voltage is present at all connections of the controller. Wiring of the digital inputs: All digital inputs of the SIOX extension module must be set to 230 V AC for the operation.
Page 141: Terminal Diagrams For Basic Module And Siox
7.2 Terminal Diagrams for Basic Module and SIOX Basic module completely expanded with 2 SIOX extension modules 7.2.1 Terminal assignment of the 230 V AC power supply  DANGER Warning of dangerous electrical voltage! Danger of electric shock! BEFORE connecting and disconnecting it must be checked that the 230 V AC power supply cable is disconnected from the power supply! The controller is only permitted to be connected to the intended mains power supply! Connection: Only on basic module - terminal block, upper right at the back...
Page 142: Terminal Assignment Of The 230 V Ac Digital Inputs
Connection to the power supply In order to fuse the mains power line, a circuit breaker with the following characteristics is recommended: • Rated current for 230 V AC: 6 A • Tripping characteristic (type): B Connection cable requirements As the controller is not equipped with an integrated disconnecting device in the form of a power switch, the following must be implemented: ...
Page 143 Terminal No. Function Basic module SIOX 1 50, 51 High pressure limiter 52, 53 Low-pressure cutout NT 54, 55 Oil / HP switch for compressor 1 58, 59 Oil / HP switch for compressor 2 62, 63 Oil / HP switch for compressor 3 66, 67 Oil / HP switch for compressor 4 50, 51...
Page 144 Terminal No. Function SIOX ejector 50, 51 Accumulator sensor 1 (bottom) 52, 53 Accumulator sensor 2 54, 55 Accumulator sensor 3 56, 57 Accumulator sensor n (top) 58, 59 Status of the oil management => oil shortage 6..12 RESERVE ...
Page 145: Terminal Assignment Of The Relay Outputs 230 V Ac
7.2.3 Terminal assignment of the relay outputs 230 V AC  DANGER Warning about dangerous electrical voltage! Danger of electric shock! BEFORE connecting and disconnecting, it must be checked that no voltage is present at the 230 V AC relay outputs! Low voltage and extra-low voltage must not be applied at the relay outputs! Connection: On the base module terminal block upper left – 10 relay outputs Connection: On the SIOX extension module – terminal block upper left - 8 relay outputs Firmware V1.41 V1...
Page 146 Terminal No. Function Basic module SIOX 1 1, 2 Enable consumer or switching of FC compressor for compressor combined control 3, 4 Compressed gas desuperheater / Suction gas post-injection 13, 14 Control of NT / MP compressor 1 23, 24 Control of NT / MP compressor 2 33, 34...
Page 147: Terminal Assignment Of The Analogue Inputs
 The MR-DOA4 module provides further relay outputs; see Terminal assignment of the Modbus relay module 230 V AC. 7.2.4 Terminal assignment of the analogue inputs  DANGER Warning about dangerous electrical voltage! Danger of electric shock! If supply voltage is connected to the analogue inputs, there is a risk of personal injury as the analogue inputs are not galvanically isolated from other system components (e.g.
Page 148: Connector Pin Assignment For Analogue Outputs
9, 10 Cylinder head temperature C1 11, 12 Cylinder head temperature C2 13, 14 Cylinder head temperature C3 15, 16 Cylinder head temperature C4 17, 18 Cylinder head temperature C5 19, 20 Cylinder head temperature C6 21, 22 Cylinder head temperature C7 23, 24 Cylinder head temperature C8...
Page 149: Connector Pin Assignment For Can-Bus, Siox And Interfaces
isolated from other system components (e.g. pressure transmitter). Furthermore this will destroy the controller! Connection: Only on the basic module - terminal blocks bottom centre - 4 analogue outputs  ATTENTION Malfunctions due to interference sources! All supply lines from and to the controller (with the exception of the 230 V power supply and signal cables) must be shielded (cable type: LiYCY)! This particularly applies for the analogue inputs and outputs (e.g.
Page 150 Connection: On basic module and SIOX extension module – connections on the left hand side  ATTENTION Danger of destruction of components! The connection of SIOX extension modules with each other or to the controller may only be performed when no voltage is present! In the event of any mix-up of the SIOX data cable (RJ45) with an Ethernet network cable with PoE (Power over Ethernet), involved network devices can be damaged! As a general rule, care should be taken to ensure that ...
Page 151: Terminal Assignment Of The Modbus Analogue Module 0
Terminal No. Function Basic module SIOX CAN bus SHIELD CAN-L CAN-H 5, 6, 7, 8 RS232 9, 10, 11, 12 Modbus RS485* SHIELD Terminals 13 /14 with integrated 120 ohms terminating resistor Note: a 120 ohms terminating resistor must be connected at the end of the Modbus! * For details about the setting, see chapter Einstellung der...
Page 152 Type Photo Function Part number Modbus analogue module 4 analogue outputs MODBAOUT02 0..10 V DC Power 230 V AC / KGLNT24V1P supply 24 V DC, 1.3 A Connection of Modbus modules to the basic module and the power supply Modbus modules can be connected to the RS485 interface of the basic module to increase the inputs / outputs. ...
Page 153: Terminal Assignment Of The Modbus Relay Module 230 V Ac
High pressure valve, ejector +0..10 V Compressed gas desuperheater +0..10 V Setting of the Modbus address Disconnect module from the power supply. Set Modbus address "50" (address selector switches X10 and X1). Connect Modbus to 100 ohm terminating resistor. Supply power to module. Configuration of the communication parameters of the Modbus interface •...
Page 154 Type Photo Function Part number Modbus 4 relay outputs with MODBDOUT04 relay module manual control switches 230 V AC Power 230 V AC / KGLNT24V1P supply 24 V DC, 1.3 A Connection of Modbus modules to the basic module and the power supply via the RS485 interface Modbus modules can be connected to the RS485 interface of the basic module to increase the inputs / outputs.
Page 155 Valve for the hot gas bypass 31 (C) Supply L1 34 (N.O.) to the valve 32 (N.C.) No function 41 (C) 44 (N.O.) 42 (N.C.) Setting of the Modbus address Disconnect module from the power supply. Set Modbus address "55" (address selector switches X10 and X1). Connect Modbus to 100 ohm terminating resistor.
Page 156 • Menu 5-3-3 Diagnostics Menu DIAGNOSE ID: Description Input Default Dim. XXXXX 5-3-3 Rel.Modul.Diag. Diagnostics menu for analysis of communication errors for the Metz modules MR- DO4 / MR-DOA4 • Menu 8-5 Service Mode Menu SERVICE ID: XXXXX Description Input Default Dim.
Page 157: Vs 3015 Ct Operating Modes
8 VS 3015 CT Operating Modes 8.1 Emergency Mode via Manual / Automatic Selection Emergency operation of the compressor pack after a controller failure is possible using the manual / automatic selection. The manual / automatic selection is realised at a relay level that is subordinate to the electronic controller.
Page 158: Service Mode
8.2 Service Mode After selection of the pack controller Service Mode (menu 8), all compressors and fan outputs are reset step by step. Then all controller functions are inactive so that each digital and analogue output can be set manually. The controller registers the Service Mode by the entry of a message in the log memory.
Page 159 • Display of the setpoint characteristic: Firmware V1.41 V1 08.11.2022 159/219...
Page 160: Vs 3015 Ct Operation
9 VS 3015 CT Operation Operation of the pack controller is possible via the CAN bus interface, the system centre, a store computer or an operator terminal whereby these can be configured. No operation at the pack controller itself is possible...
Page 161 For the remote control of a controller, it makes no difference whether this is done with a system centre (A), a store computer or with an operator terminal (B) as the user interfaces on the terminals are almost identical and the same functions are available. For details about remote control, see Call Controller Menu using Remote Operation. ...
Page 162: Menus And Operating Screens
9.2.1 Menus and Operating Screens  If the system centre, store computer or operator terminal remain locked down, settings on the controller are read-only. Changes and inputs are not possible. However, if any parametrisation is required, the input lock must be deactivated, see Deactivating the Input Lock.
Page 163  In contrast to the system centre, store computer or operator terminal, the menu of the controller is displayed directly on the terminal device. Menus A menu can contain up to ten menu items (0 .. 9; 0 for menu item 10). After the selection of an element using the cursor buttons (↑) and (↓) and tapping the ENTER button ( ) or by tapping the buttons 0..9, further submenus or operating screens are provided.
Page 164: Call Controller Menu Using Remote Operation
ENTER button Letters / characters äöüß0, space character 2ABC 3DEF 4GHI 5JKL 6MNO 7PQRS 8TUV 9WXYZ . _ - Insert space character  Upper case and lower case can be toggled by tapping the MODE button. Exit from the menus and operating screens Tap the ESC button to exit from menus and operating screens.
Page 165: Ci 4X00 System Centre - Remote Control
9.2.2.1 CI 4x00 System Centre - Remote Control The terminal for remote control of the controller (menu 2-2 or menu 4-2) is called in the system centre as follows: Step 1: Tap "2 - System overview" or "4 - Configuration" in the main menu. If "2" is selected, the values below are only displayed as read-only;...
Page 166: Deactivating The Input Lock
Step 3: the main menu of the controller is displayed on the terminal by tapping the ENTER button (if necessary, the input lock must be deactivated before the entry of values; see Deactivating the Input Lock). 9.2.3 Deactivating the Input Lock Operation via system centre, store computer or operator terminal is only possible for controllers with CAN bus connection;...
Page 167: Ci 3X00 Store Computer/ Al 300 Operator Terminal - Unlock
9.2.3.2 CI 3x00 Store Computer/ AL 300 Operator Terminal - Unlock Before entering values, the input lock on the store computer or operator terminal must be deactivated as follows: Step 1: Select menu item 9 "Parametrisation" in the main menu. Step 2: Select menu item 3 "Lock-down"...
Page 168 Step 2: Select menu item 3 "Lock-down" in this menu. Step 3: Tap the buttons MODE and ENTER ( ) simultaneously to open the screen for the suppression of the remote alarm signalling and input the service mode duration (1..255 minutes). The service mode is now activated for the duration entered above.
Page 169: Vs 3015 Ct Menu Structure
10 VS 3015 CT Menu Structure The pack controller must be parametrised using a connected operator terminal. The parametrisation is performed via the CAN bus interface using which the communication with the pack controller takes place. It makes no difference for the operation of the pack controller whether this is done with a system centre, a store computer or an operator terminal;...
Page 170 Comp. monitor COMP MON Fct.Rel.Out.10 3-3-a REL.OUT.10 Fct.Modb.Rel. 1 3-3-b REL.OUT.1 Refrigerant monitoring REFR. MON Base load BASE LOAD Messages MESSAGE Cond. mon. COND. MON 4 Clock CLOCK Setpoint toggle CLOCK current time CLOCK Toggle time CLOCK 5 Messages MESSAGES Display MESSAGE...
Page 171: Menu 0 Main Menu
7 Default settings VS3015CT 8 Service Mode SERVICE Analogue values SERVICE Compressor SERVICE Comp. LT SERVICE Condenser fans SERVICE SERVICE Modbus Rel.Out SERVICE Ejectors SERVICE  The condenser monitoring function in menu 2-7 and menu 3-9 must be deactivated (menu 3-9a set to "OFF")! 10.1.1 Menu 0 Main menu VS3015CT Pos: XXXXX...
Page 172: Menu 2 Actual Values
10.1.3 Menu 2 Actual values ACT.VALUES ID:xxxxx 1 Analogue values Continue to menu 2-1 2 Compressors Continue to menu 2-2 3 Condenser fans Continue to menu 2-3 4 System Continue to menu 2-4 6 COP Continue to menu 2-6 7 Cond.
Page 173 ANALOGW.ID: XXXXX Display of the archived refrigeration point data in the store computer Setp FC Fan XXX % Currently output correcting variable in percent for fan speed (100% corresponds to 10 V at the analogue output) Act. MP ↑/↓/↔ XXX b Current medium pressure Setp.
Page 174 • Menu 2-2 Compressors Comp. IO ID: XXXXX M. cutout Cn1 XXX Compressor 1 motor overload cut-out digital input (only displayed if parametrised in the system configuration - menu 3-1) HP cutout 1 XXX Compressor 1 motor overload cut-out digital input (only displayed if parametrised in the system configuration - menu 3-1) Man.sw.
Page 175 Basic module with first SIOX extension module: 1 - max. 4 fans Basic module with ebm-papst fan via Modbus: 1 - max. 12 fans *The fast speed is only possible up to stage 6 in the SSFF operating mode and up to stage 11 in the SSSF operating mode.
Page 176: Menu 3 Setpoints
Ejectors ID: XXXXX Ejector G 1 XXX Gas ejector 1 ON / OFF Only the actual number of gas ejectors is displayed* Ejector G 8 XXX Gas ejector 8 ON / OFF Ejector L 1 XXX Liquid ejector 1 ON / OFF Only the actual number of liquid ejectors is displayed* Ejector L 3 XXX Liquid ejector 3 ON / OFF...
Page 177 CONFIG ID: XXXXX Description Input Default Dim. Del.Oil/HP-F. xx m Delay time for the messages from menu 3-1-c 0..10 Enable comp.stages → enable of the capacity stages → Screen 3-1-c Emerg. working X Emergency operation YES/NO Y/N No.emerg.stages X Number of capacity stages for emergency operation 1..3/7 (only visible if Notbetrieb Y)
Page 178 • Screen 3-1-a Transmitter / sensor match TRANSMITTER ID: XXXXX Description Input Default Dim. LP-Transmitter → Selection of signal interface pressure → Screen 3-1-a-a transmitter LP (4..20 mA or 0..10 V) LP-Min XXX b Pressure at 4 mA or 0 V at the output of 0..2.0 the LP pressure sensor LP-Max XXX b...
Page 179 TRANSD.MP ID: XXXXX Description Input Default Dim. 4-20 mA √ 4..20 mA at the output of the MP pressure √ √ sensor 0-10 V 0..10 V at the output of the MP pressure sensor • Screen 3-1-a-d LP Z2 Transmitter TRAN.LP Z2 ID: XXXXX Description Input...
Page 180 SENSOR h1 ID: XXXXX Description Input Default Dim. Low pressure transmitter √ Suct.GasTemp. √ Suction gas temperature sensor √ • Screen 3-1-h COP Sensor h2 SENSOR H2 ID: XXXXX Description Input Default Dim. High pressure transmitter √ Cyl.HeadTemp. Cylinder head temperature sensor HotGasTemp.
Page 181 Assign Qo Submenu in which a coefficient of performance is → Screen 3-2-1-1-b assigned to each compressor -the submenu is only visible if the parameter "Qo assignment" is set to YES. The coefficient of performance for each compressor must have been calculated for 50 The total capacity of all compressors must not exceed 100%;...
Page 182 • Screen 3-2-1-1-b Qo assignment ASSIGN Qo ID:XXXXX Description Input Default Dim. Comp. 1 X.X% compressor 1 coefficient of performance percentage 5.0..100.00 only the available compressors are displayed Comp. 8 X.X % compressor 3 coefficient of performance percentage 5.0..100.00 *The default is an even distribution to the available compressors and thus dependent on the number of compressors.
Page 183 • Menu 3-2-1-3 LP-Control day LP CONT D ID: XXXXX Description Input Default Dim. to-Max.XXX °C Max. t setpoint for setpoint shift -50..10 °C tr-Min.XXX °C Minimum room temperature for setpoint shift -25..20 °C (only visible if t -adjustment via room temperature - screen 3-2-2-a) to-Min.XXX °C...
Page 184 *Basic module: 1 – max. 4 capacity stages with first SIOX extension module: 1 - max. 8 capacity stages • Screen 3-2-1-3-c Basic time capacity stage OFF B. UNLO T ID: XXXXX Description Input Default Dim. B. UNLO T S1 XXX s Only the available capacity stages are 3..250 sec.
Page 185 LP CONT N ID: XXXXX Description Input Default Dim. Vari. unload time → Display of the variable times t → Screen 3-2-1-4- Dead band XX K Switching hysteresis for step control (only visible for "step control" type of 1..10 control) NZ speed con.
Page 186 V. UNLO T ID: XXXXX Description Input Default Dim. V. UNLO T S1 XXX s Only the available capacity stages are 3..250 sec. displayed. V. UNLO T S2 XXX s 3..250 sec. V. UNLO T S3 XXX s 3..250 sec.
Page 187 HP CONT ID: XXXXX Description Input Default Dim. Timeb.I-fact. XX s Time interval for calculation of i-component for fan speed control signal 1..60 (only visible if speed controller or combined control type of control has been selected - screen 3-2-2-1-a) Offset XX% Offset for fan speed correcting variable 1..50...
Page 188 FAN.ORD. ID: Description Input Default Dim. XXXXX -- : Switching order has not been assigned and a message is output. This state is not permissible; the fan must be disconnected from the power supply otherwise it will run with 80% of its capacity in emergency operation. 0: fan is removed from the switching order list (only possible if authorisation = Master).
Page 189 • Screen 3-2-2-1-c EBM Manual Run FAN.ORD. ID: Description Input Default Dim. XXXXX ssssssssss A:aa manual fan control of the fan with 10-digit serial number ssssssssss and Modbus --, 0..100 XXX% address aa Each fan can be manually controlled between 0..100%. -- : Manual mode deactivated - the fans are controlled via the controller (automatic) •...
Page 190 HP CONT ID: Description Input Default Dim. XXXXX I-Wert XXX Amplification factor Vi PI controller for HP control valve [V/s*bar] 0.00..0.99 0.05 Intervall I X Interval for calculating the i-component for the control of the HP valve 1..30 Handbetr.
Page 191 V. LOAD T ID: XXXXX Description Input Default Dim. Vari.Z.EIN L1 XXX s Only the available condenser capacity stages 3..250 sec. are displayed. Vari.Z.EIN L2 XXX s 3..250 sec. Vari.Z.EIN L3 XXX s 3..250 sec. Vari.Z.EIN L4 XXX s 3..250 sec.
Page 192 HR ID: XXXXX Description Input Default Dim. tG Anheb.WRG Parameter to use a fixed tg-setpoint in HR mode. This value can be configured with the "tG-Setp. WRG" parameter. tG-Soll WRG tg setpoint for the HR mode (only visible if "tG 0..30 °C Incr.WRG"...
Page 193 • Screen 3-2-2-3-b to-adjustment HR HR to Shift ID:XXXXX Description Input Default to-adjustment is off √ √ Outdoor temp. to-adjustment via temperature outside CAN bus to-adjustment via CAN bus • Screen 3-2-2-4 Ejectors EJECTORS ID:XXXXX Description Input Default Dim.
Page 194 EJECTORS ID:XXXXX Description Input Default Dim. to shift to shift in ejector operation 0..10 HP-Setp. Evac. HP setpoint for accumulator evacuation 40..80 DeltaP MP-LP DeltaP pressure difference medium pressure to suction 3..15 pressure The medium pressure is shifted so that the pressure difference between MP and LP is always maintained.
Page 195 MP-CONT ID: XXXXX Description Input Default Dim. dPm HDV ZU Xb P-range for forced closing of the HPV in the 0..20,-- case of exceeding the maximum medium pressure setpoint dPm HDV AUF Xb P-range for forced opening of the HPV in the 0..20,-- case of undercutting the minimum medium pressure setpoint...
Page 196 MP PACK ID: XXXXX Description Input Default Dim. i-factor X.XX i-factor of the PI controller. 0.00..1.00 0.05 Example: for control error of 1 K with an i-factor of 0.5, the i-component changes with 0.05 V per cycle time (1 second) of the controller (unit V/ K.s). Attention: The set value is reduced by a factor of Dead band X K Neutral zone for the PI-controller of the FC 0..10...
Page 197 LT-REFR. ID: XXXXX Description Input Default Dim. Enable LT contr. Activation of the LT compressors control No. comps. Number of LT compressors 1..3 Enable comp.stages Enable of the individual capacity stages Mot.cutout comp Enable for the motor protection monitoring of the LT compressors Oil/HP-Switch Enable for the oil/HP monitoring of the LT compressors...
Page 198 • Menu 3-3 Compressor monitoring COMP MON ID: Description Input Default Dim. XXXXX Comp. OFF temp Disable compressor if temperature too high 80..180 °C XXX °C Comp. ON temp Enable compressor after temperature too high 50..120 °C XXX °C Comp temp del.
Page 199 COMP MON ID: Description Input Default Dim. XXXXX PC Off Time S1 XXX Setpoint in seconds for the standstill time of the speed-controlled MP 10..250 compressor. Min. ÜH XX K Minimum permissible superheat 5..15 Verz.min ÜH XXX s Alarm delay for minimum superheat (fault message: superheat too low) 1..30 Dif.
Page 200 • Menu 3-5 Menu item is hidden • Menu 3-6 Base load BASE LOAD ID: XXXXX Description Input Default Dim. Zyklusz. Verd. XXX m Cycle time for the compressor base load 5..720 minutes rotation BaseLoadRot.F Y/N Activate base load rotation for fans (only visible if the step controller type of HP control has been selected - screen 3-2-2-1- On time cond.
Page 201 Messages ID: XXXXX Input Default Setpoint changed X Setpoint changed -, 0..99 Max. speed F X Threshold value for speed controller exceeded -, 0..99 BatteriespannungX Internal battery fault -, 0..99 Manual OFF X Compressor manual control switch OFF -, 0..99 Manual ON X Compressor manual control switch ON...
Page 202 Messages ID: XXXXX Input Default Motor temp. PC X Parallel compressor motor overload cutout tripped -, 0..99 PC Starts/h X Parallel compressor switching frequency too high (counted within 3600 s) -, 0..99 PV Cyl. Temp. X Parallel compressor cylinder head temperature threshold exceeded -, 0..99 PV Messk.
Page 203 MON-MOD ID: XXXXX Description Input Default Dim. Aus √ Condenser monitoring deactivated √ √ Teach Condenser monitoring in the learning phase Monitor Condenser monitoring active • Screen 3-9-b Blind signal Source-blinds ID: XXXXX Input Default Dim. CI3000 √ √ √ DDC1 DDC2 DDC3...
Page 204: Menu 4 Clock
10.1.5 Menu 4 Clock CLOCK POS: XXXXX Description Input Default/dimension Setpoint toggle XXX External setpoint shift or using internal INT/EXT clock Current time → Display of current date / current time → Screen 4-a Toggle time → Entry of changeover times (only visible →...
Page 205 MESSAGES POS: XXXXX Description Delete ! Prompt to confirm deletion of messages Are you sure ? No: ESC Yes: • Menu 5-3 Modbus Modbus POS: XXXXX Description 1 configuration Continue to menu 5-3-1 2 diagnostic Continue to menu 5-3-2 3 Rel.Modul.Diag.
Page 206: Menu 6 Operating Data
DIAGNOSE Description Inpu Defa POS:XXXXX Fan indx Configuring for which ebm-papst fan the diagnosis parameters shall be displayed 1..12 1 error counter Will be increased if at least one error occures during a communication cycles maximum number of errors is 5. If the number of errors exceedes 5 an alarm will be signalled timeout Error Counter for timeout exception...
Page 207 OP DATA POS: XXXXX Description Input Default Dim. On time C 1 XXXX h Display and input of the compressor run times. ↑, ↓ 0..9999 Hour Only the available compressor stages are displayed. On time C 8 XXXX h as above Hour Basic module: 1 – max. 4 capacity stages with first SIOX extension module 1 – max. 8 capacity stages...
Page 208: Menu 7 Default Settings
for NT and Parallel Compressors with first SIOX extension module 1 – max. 8 for LT Compressors: 1 - max. 3 • Menu 6-2-2 Compressor starts / Menu 6-2-5 PC starts / Menu 6-2-8 LT compressor starts HISTORY POS: Description XXXXX Date: dd/mm/yy Date Compressor starts The compressor starts of the date of row 1 are displayed by tapping the arrow - selection →...
Page 209 • Menu 8-1 Default Analogue values SERVICE ID: XXXXX Description Input Default Dim. AnalogOut1 X.X V Voltage at the analogue output 1 ↑, ↓ (terminals 53, 54) 0.0..10.0 AnalogOut2 X.X V Voltage at the analogue output 2 ↑, ↓ (terminals 55, 56) 0.0..10.0 AnalogOut3 X.XX V...
Page 210 SERVICE ID: Description Input Default Dim. XXXXX Relay 1 XXX Switching state of the respective relay output of the Modbus relay module ON or OFF. ↑, ↓ (ON/ OFF) Relay 8 XXX ↑, ↓ (ON/ OFF) • Menu 8-7 Ejectors SERVICE ID: Description Input...
Page 211: Decommissioning And Disposal
Users have the option of returning a B2B device distributed by us to us at the end of its service life. Please contact your customer service representative at Eckelmann AG to arrange for the device to be taken back and disposed of properly. Please inform yourself about the local regulations for the separate disposal of electrical and electronic products and batteries.
Page 212: Alarms And Messages Vs 3015 Ct
12 Alarms and Messages VS 3015 CT 12.1 Message System A number of messages are recognised by the system and stored with date, time and the priority in the internal log memory of the system. Received / sent messages are stored in the log memory. The time resolution is one minute.
Page 213: Automatic Priorisation
Internal SIOX extension module has failed ext. SIOX x error x External SIOX extension module No. x has failed Hardware incompatib. Hardware not compatible with the firmware for VS 3015 CT Battery voltage Internal battery fault Watchdog Internal watchdog of the pack controller deactivated (DIP switch S1 coding switch 6 = OFF,...
Page 214 Message text Process fault alarm Low Superheat Minimum superheat undercut Low Superheat LT Minimum superheat LT undercut Mot. cutout Cx Compressor Cx motor overload cut-out tripped Motor temp. LT x LT compressor Cx motor overload cutout tripped Mot.temp 1/FC-fault Compressor 1 motor overload cutout tripped / frequency converter fault Mot.temp 1/F.fau LT Compressor 1 motor overload cutout tripped / frequency converter fault LT...
Page 215 Message text Process fault alarm External alarm External alarm digital input is active Speed controller Speed controller / external alarm digital input is active and speed / combined control is activated Service Mode Service mode has been activated Comp/cond.
Page 216: Technical Data Vs 3015 Ct / Siox
13 Technical Data VS 3015 CT / SIOX 13.1 Electrical Data VS 3015 CT / SIOX  DANGER Overvoltage category III / contamination degree 2: All connections of the device provided for operation with 230 V AC supply voltage must be wired with the same phase conductor.
Page 217: Mechanical Data Vs 3015 Ct
1600 g approx. 800 g Protection rating IP20 CE conformity According to EC Directives 73/23/EEC Low Voltage Directive 89/336/EEC EMC Directive 13.2 Mechanical Data VS 3015 CT Basic module, all dimensions in mm. (1) = mating connector and cable Firmware V1.41 V1 08.11.2022 217/219...
Page 218: Mechanical Data Siox Extension Module
13.3 Mechanical Data SIOX Extension Module SIOX extension module with manual control switch, all dimensions in mm. (1) = mating connector and cable Firmware V1.41 V1 08.11.2022 218/219...
Page 219: Part Numbers And Accessories Vs 3015 Ct
14 Part Numbers and Accessories VS 3015 CT 14.1 Pack Controller VS 3015 CT / SIOX Extension Module Type Description Part number VS 3015 CT VS 3015 CT pack controller LIVS301519 SIOX SIOX extension module • with switches LISIOX0012 •...

ECKELMANN VS 3015 CT Operating Instruction

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for ECKELMANN VS 3015 CT

Summary of Contents for ECKELMANN VS 3015 CT

Table of Contents