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Bitzer ACP Link Technical Information

Bitzer ACP Link Technical Information

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BITZER ACP LINK
Original document
English ························································································································································· 2
Type list
BITZER ACP ammonia compressor packs with BITZER ACP LINK
(PLC software v1.1.0.0, CM-SW firmware 2.9.89.00, Electrical panel IO-module program version 1.05)
Skilled installer, Electrically skilled person
Eingewiesener Monteur, Elektrofachkraft
CT‐600‐2

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  • Page 1 CT‐600‐2 BITZER ACP LINK Original document English ························································································································································· 2 Type list BITZER ACP ammonia compressor packs with BITZER ACP LINK (PLC software v1.1.0.0, CM-SW firmware 2.9.89.00, Electrical panel IO-module program version 1.05) Skilled installer, Electrically skilled person Eingewiesener Monteur, Elektrofachkraft...

  • Page 2: Table Of Contents

    Software installation and update ......................22     ACP LINK panel PLC ........................22     Update Schneider firmware, ACP LINK panel PLC ..............22     Update software, ACP LINK panel PLC ..................23     More than one ACP on a network, change PLC node-name ............24  ...
  • Page 3 Configuration, variable speed drives (VSD) ..................34     Check of direction of rotation with VSD ..................34     Variable speed drive configuration WEG CFW11 for operation with ACP LINK ......35     Speed set point settings in ACP LINK ..................36    ...
  • Page 4     10.12 Daily use of ACP LINK ........................55     10.13 Remote access to BITZER ACP LINK via Schneider App ............... 55     10.14 Remote access to ACP LINK via Schneider Webgate ..............55     10.15 Electrical panel IO-module HMI and keyboard .................

  • Page 5: Introduction

    The BITZER Ammonia Compressor Packs (ACP) can be delivered with the BITZER ACP LINK. The system consists of the main ACP LINK panel with HMI and individual electronic modules for the main components. The ACP LINK handles all necessary protection and operation of the components on the ACP including the interaction with the plant where it is part of.

  • Page 6: General Safety References

    2.4 General safety references The HMI Human Machine Interface on the ACP LINK may only be operated when the main ACP LINK panel, CM-SW-01/CM-IO modules and starter panel are closed. In case it is necessary to open one of the panels or modules or Motor Connection boxes for software updates or work on the electric or electronic components for installation or service, then this may only be done by authorized staff.

  • Page 7: Technical Data

    4 Technical data 4.1 ACP LINK panel The ACP LINK panel is to be mounted on a support on or close to the ACP unit (see section 6.2). The panel is partly pre-wired by BITZER but must be finally wired and connected on site by the customer (see section 7.1). See also section 13.1 and 13.2 for parameters settings.

  • Page 8: Electrical Panel Io-Module (M172)

    The module is delivered loose and must be mounted in the electrical panel (see section 6.3). For BITZER supplied electrical panels, the module is installed and partly pre-wired. For customer supplied electrical panels, the module must be wired by the customer (see section 7.2).

  • Page 9: Oil Separator And Economizer System Module (Cm-Io)

    The oil separator module is mounted on the oil separator and is pre-wired from the factory. The economizer system module is mounted on the economizer system and is partly pre-wired from the factory. Supplier BITZER Reference No. OAHC65051A: 34738701 OAHC80051A: 34738702...
  • Page 10 Type 300A/1A (WEG 14498543) Type 750A/1A (WEG 14289837) Type 1000A/1A PTC output See motor data sheet CT-600-2...

  • Page 11: General Description

    LINK panel. The connection to the plant and starter equipment is handled with digital and analog signals from/to the ACP LINK panel and the IO-module in the electrical starter panel. There is also the possibility of Modbus TCP/IP communication from the ACP LINK panel. Each of the modules are connected to local sensors and actuators for the different main components.

  • Page 12: Acp Link Hmi Overview

    The module functions as distributed IO for the electrical panel. The signals going into the M172 are scaled on the module and communication with ACP LINK panel is via Modbus-RTU. Configuration is done on the module itself (keys and display).

  • Page 13: Acp Link Main Functions Overview

    The many functions of the ACP LINK can be sorted in different groups: I/O signals data processing The different signals for sensor and actuators are communicated to the ACP LINK panel through a Modbus RTU connection. Various other related signals that are not measured directly, are then derived to be used in the different functions.
  • Page 14 The safety chain is essentially, not a part of the control system, but the wiring of the safety chain is part of the wiring of the ACP LINK. The safety chain is individual for each compressor and directly connected to the CM- SW-01 module and will cut the start-signal in case the chain is broken.

  • Page 15: Mounting

    (see section 7). 6.2 ACP LINK panel mounting The ACP LINK panel is attached to a separate frame with four 8mm bolts. The panel is prepared with M8 threaded holes in each corner. The frame with the ACP LINK panel must be placed close to the ACP unit. The panel may not obstruct access to the ACP unit.

  • Page 16: Electrical Connection

    7.1 ACP LINK panel The wiring to the ACP unit is prepared from the factory. If the ACP LINK panel is supplied loose, then this part must be connected after placement of the ACP unit and the panel (see also section 6.2). The wires to/from the ACP unit are packed together on the unit and come with numbered connectors, which correspond to the terminals in the ACP LINK panel.
  • Page 17 Terminal plan ACP LINK panel 4  Emerg. stop return 2      Dep. On  3  Emerg.  Emerg. stop return 1      Emergency stop    customer em.  stop  customer electrical panel  2  Emerg. stop supply 2      stop circuit  1  Emerg. stop supply 1                          6 ...

  • Page 18: Electrical Panel Io-Module (M172)

    The M172 module for the electrical panel is supplied loose and to be installed by the customer (see also section 6.3). The terminal plan below shows how to connect the module to the ACP LINK panel, the plant, the optional eco system module and optional sensors. Section 11.1 gives an overview of the I/O signals and further descriptions.

  • Page 19: Compressor Modules (Cm-Sw), Additional Motor Boxes, Oil Separator Module (Cm-Io)

    7.4 Economizer system module (CM-IO) When using an economizer, it must be connected according to the terminal plan in section 7.1. The customer must connect (cables supplied by customer) the economizer system module with the ACP LINK panel: Supply 230/115 VAC, connect to CN1 ...

  • Page 20: Modbus Rtu Wiring And Connection

    7.5 Modbus RTU wiring and connection The Modbus RTU network is proprietary for the ACP LINK only and may not be connected to other devices. The maximum cable distance between devices on the Modbus RTU network is 100 m. Modbus cable type and installation must be carried out in accordance with IEC-norm.
  • Page 21 ACP Link  Panel  Modbus RTU Network overview with economizer CT-600-2...

  • Page 22: Software Installation And Update

    NOTICE New firmware on the ACP LINK PLC and HMI always means that all data is lost, so it is imperative to back up the configuration by means of storing a configuration on portable media, taking notes or taking pictures of the relevant screens.

  • Page 23: Update Software, Acp Link Panel Plc

    PLC node name must be used. See also 8.1.3 on information how to change node-name of PLC. 3. The program can be delivered by BITZER in a zipped file or as files in a folder (typical folder name for update: “sd_card_plc_v1.1.0.0” and typical folder name for first installation: “sd_card_plc_v1.1.0.0 _MAIN_CONTROLLER1”).

  • Page 24: More Than One Acp On A Network, Change Plc Node-Name

    1. If ACP is in operation, then stop operation and secure against unintended start of motors/ compressors. 2. Acquire a file package from BITZER for updating the program and setting the PLC node name: “sd_card_plc_v1.1.0.0 _MAIN_CONTROLLER1” for updating program to version v1.1.0.0 and setting the node name to “MAIN_CONTROLLER1”.

  • Page 25: Contingency Plan For Problems With Updating Plc Program

    (unlock with the green button on the top). The slot for the system SD-card is located behind a cover on the side. Contact BITZER if the recovery tool is needed. Update software, ACP LINK panel HMI 1.

  • Page 26: Procedure To Change The Plc Node Name That The Hmi Looks For

    The files will have this structure. Copy them all (Ctrl+A, Ctrl+C) and paste to the SD card (Ctrl+V) 5. Insert the USB-Stick in the slot on the back of the HMI. Make sure that the HMI is powered on and initialized before inserting the USB-stick.

  • Page 27: Electrical Panel Io-Module (M172)

    1. If ACP is in operation, then stop operation and secure against unintended start of motors/ compressors. 2. Obtain the correct program files for the electrical panel IO-module from BITZER. 3. Prepare USB stick: Format the USB stick (FAT32). Then transfer the files from the folder to the USB stick.
  • Page 28 4. Select IQ Module CM-SW-01-01 in the new project window. 5. Connect BEST converter between PC and CM-SW-01 or CM-IO module (connection CN 14). 6. Select Connect\BEST converter. 7. Wait for connection to establish. 8. Check Overview \ Firmware version. Firmware version must be 2.8.82.00 or newer (higher). 9.
  • Page 29 10. The latest actual version is part of the latest BEST update. 11. It is recommended to power cycle the module after a software update – reconnect to BEST after power cycle. To power cycle, remove connector CN1 for 5-10 seconds, then reconnect. NOTICE After a firmware update, it is recommended to check the configuration of the module, see section 9.4 and 9.5.

  • Page 30: Configuration And Setup

    9.1 Configuration ACP LINK panel, IP addresses and PLC name If not experienced in using the HMI panel, then first see section 10 on how to operate the ACP LINK panel HMI. For the correct communication between ACP LINK PLC and HMI, it is necessary to have a correct setup of IP addresses and ACP LINK PLC node-name.

  • Page 31: Configuration Acp Link Panel, Plant Specific Parameters

    2450 12. Enable the optional economizer system (if supplied and connected): Param. \ Economizer. 9.3 Configuration ACP LINK panel, plant specific parameters Some parameters and timers must be set according the plant operating conditions, ACP-size, plant size, etc. 1. Set the module capacity limiter step: Param. \ Plant page 1 A rule of thumb is to the set the value roughly to 10% of the total swept volume of the ACP.

  • Page 32: Configuration, Compressor Modules (Cm-Sw-01)

    The configuration of the compressors module is done using the BEST software. Depending on ACP model and firmware version, some parameters can only be set by BITZER. Please contact BITZER if necessary. 1. Connect to the Module with the BEST software. More information can be found in section 8.4.

  • Page 33: Configuration, Oil And Economizer System Modules (Cm-Io)

    The configuration of the oil and economizer system module is done using the BEST software. Depending on ACP model and firmware version, some parameters can only be set by BITZER. Please contact BITZER if necessary. The procedure is similar as for the compressor module, see also section 9.4.

  • Page 34: Configuration, Variable Speed Drives (Vsd)

    This section describes the configuration of the variable speed drive that can be delivered as optional equipment by BITZER (WEG Variable Speed Drive CFW11). If the customer uses a different brand or type, not delivered by BITZER, then below section can be used as guideline.

  • Page 35: Variable Speed Drive Configuration Weg Cfw11 For Operation With Acp Link

    The setup of the VSD must be done in accordance with the information in this section. The settings handled in this section are minimum requirements for the VSD setup, in order to operate correctly with the BITZER ACP LINK. See the operating manual from the VSD supplier for further reference. Other settings can be configured as desired, taking into account following notes.

  • Page 36: Speed Set Point Settings In Acp Link

    The speed set point is send to the variable speed drive as an analog 0-10 V signal, coming from the electrical panel IO-module. The speed set point in the ACP LINK PLC (output from M251 PLC to M172) is calculated in the range 0 –...

  • Page 37: Current Calibration Factor In Acp Link

    Param. => Save/Restore => Save User Setup and save to one of three files. 2. The program to upload files to an SD-card can be delivered by BITZER in a zipped file or as files in a folders (typical folder name: “sd_card_upload_from_plc_to_sd”).

  • Page 38: Compressor, Oil And Economizer System Modules (Cm-Sw-01 & Cm-Io)

    To download and restore files from SD-card to the PLC: The program to download files from an SD-card to the PLC is very much the same as the program to upload. One line in a script must be changed. Open the folder “Cmd” in the folder structure on the SD-card to find the file “Script.cmd”.

  • Page 39: Electrical Panel Io-Module (M172)

    To download a parameter file from a USB-Stick to the M172: Obtain the correct parameter file (named “00PARAM.DAT”) for the electrical panel IO-module. BITZER delivers a default configuration but the customer can upload the actual parameter file to a USB-Stick. See instructions earlier in this section.

  • Page 40: Recovery Of Data Logs

    9.10 Configure communication with SCADA system over Modbus The ACP LINK PLC has a list of signals, including status of the warnings and alarms accessible over Modbus TCP/IP. For this purpose the Ethernet 1 connection on the PLC must be used. The available signals on this Modbus are refreshed every 2 seconds.

  • Page 41: Acp Link, User Guide

    10.1 Home screen (Home) Operating the ACP starts normally from the Home screen on the ACP LINK HMI, which gives an overview of key parameters and operation status. Access to other HMI screens can be found on the right side on all screens, with buttons that link to the other screens.

  • Page 42: User Access (Login) To Acp Link Panel Hmi

    Login is also required to change the configuration or parameter settings. 10.2 User access (login) to ACP LINK panel HMI Depending on the work intended on the HMI, it may be necessary to log in on the HMI and access a certain screen.

  • Page 43: Regulation / Select Operation Mode

    The minimum capacity to start (operation modes manual, auto and remote) is exactly 4/3 times the minimum nominal capacity of the unit. The minimum capacity to start is higher than the minimum nominal capacity in order to assure that the ACP LINK can regulate the capacity (up/down), once started. It also assures that a CT-600-2...

  • Page 44: State

    (cooling mode). Once the PID output reaches the minimum capacity to start, then the ACP LINK will start the first compressor and the PID ramp function will be enabled. The ramp function makes it possible to control how fast the ACP will try to bring the process value to the level defined by the setpoint.

  • Page 45: Pid

    The compressor start priority can be influenced by the user through buttons [5] on the Control screen. If a different starting configuration than what the ACP LINK finds optimum is wanted, the user can change the starting priority number. The number can be set between 1 and 9; the lower the number, the higher the priority.

  • Page 46: Oil System Screen (Oilsys)

    10.5 Oil system screen (OilSys) This screen shows status and key parameters of the oil system. Lubricating pressure is defined as the difference between the oil pressure after the filter and the suction pressure. Oil system pressure drop is defined as the difference between the discharge pressure and the oil pressure after the filter. The oil separator discharge flow is a calculated value based on the actual total capacity and the discharge gas condition.

  • Page 47: Economizer System Screen (Ecosys)

    10.6 Economizer system screen (EcoSys) This screen shows status and key parameters of the economizer system (optional). 10.7 Alarms and warnings screen (Alarms) The first page in the alarms section shows the active alarms, meaning the conditions causing them are not yet rectified or the alarms are not yet reset.

  • Page 48: Trends Screen

    10.8 Trends screen The trend function can be used as a diagnostic tool by the user. Predefined values are logged. The user can access historical values by use of a calendar function, and monitor live data as well. CT-600-2...

  • Page 49: Service Screen

    10.9 Service screen The Service screen gives access to several functions, primarily related to configuration and service. Communication setup: explained in detail below in below section ‘Communication Setup’. Event log: the event log shows a record of the user history (log in and log out details). Language: the displayed language on HMI is changed here (no login required) Unit: the unit of the HMI can be changed here between metric (SI) or imperial.
  • Page 50 The HMI is connected to the ACP LINK PLC, communicating with a Schneider protocol. The IP addresses for the two Ethernet connections on the HMI can be changed here. Ethernet 1 [3] is used for connection to the PLC. It must be configured, so the HMI is on the same network as the PLC. Ethernet 2 [4] is used for a WIFI access point.

  • Page 51: Parameters And Timers Screen (Param.)

    Oil and economizer system modules (OAHC & ECOSYS) The CM-IO module on the oil separator and the optional economizer function as a remote IO modules and communicate to the ACP LINK PLC over Modbus RTU. Setup and connection is similar as described above for the compressor modules.
  • Page 52 This parameter is used to limit how quickly the regulation is allowed to change the capacity setpoint. This can be used to match the regulator in the ACP LINK to a regulator on customer side. Max no. of alarms in timespan window and Alarm timespan window size (Plant \ Page 1) These two parameters are used for automatic alarm reset and indicate the maximum amount of consecutive equal alarms within a certain time frame that will be reset automatically.
  • Page 53 Motor error signal inversion (Comp./Motor \ Page 2) Parameter to invert the error signal from the drive/motor. The default setting expects that a low signal means an error exists. It is possible to switch to the alternative where a low signal means that the drive/motor is healthy.
  • Page 54 PID TD Parameter to tune the damping time of the derivative action. PID setpoint ramp limit Parameter to define the ramp time of the setpoint (minutes per unit of pressure or temperature). See figure below for explanation of ramp function. PID deadband Parameter that defines the deadband of the PID regulator.

  • Page 55: Daily Use Of Acp Link

    10.12 Daily use of ACP LINK The pages needed for daily observations on the HMI of the ACP LINK panel can be viewed directly without the need of login. Login as normal user is required to change the regulation mode (including to stop the unit).

  • Page 56: Electrical Panel Io-Module Hmi And Keyboard

    “up/down” keys to go through the pages. Change Settings Access to the settings part of the module is protected by a password. Contact BITZER Industrial Refrigeration for more information. See also section 9.6 and 13.5 about configuration and settings on this module.
  • Page 57 From the Settings screen, select “Scale AI” to scale the analog input signals according to the sensor used and the signal resolution used in the ACP LINK. In addition to the scale, a calibration factor can be used if multiplication is needed for the sensor to match. To modify a value, select the desired input, then select the value, and press “OK”.
  • Page 58 From the Settings screen, select “Network Config.” to configure the Ethernet IP addresses and enable/ disable the optional extension module. The RS485-1 (Modbus RTU) parameters can also be changed, however this is normally not necessary for use on ACP. From the Settings screen, page 2, select “USB” to download (select “Load Param. from USB”) or upload (select “Save param.

  • Page 59: O Overview

    To be connected by customer from ACP LINK panel. RS485-1 CN19 To be connected by customer with twisted pair wires to ACP LINK panel. Use (Modbus RTU) 120 Ω termination resistor. Cable type: For example, Belden 3106A cable can be specified, but different types of cable with equivalent characteristics can be used.
  • Page 60 Signal from plant to give start permission for eco operation of the enable compressors. Only used when ACP is connected to an economizer system that is not controlled by the BITZER ACP LINK. High = eco operation enabled, Low = eco operation disabled. DI 8 PID setpoint 2 Signal from plant to change setpoint of PID regulator in ACP LINK.
  • Page 61 DO 9 CN15 3 A / Eco system Signal from ACP LINK to plant to inform that at least one 250 V running compressor is running with eco operation (eco line solenoid valve on compressor is open). High = at least one compressor running with eco line open, Low = no compressor running with eco line open.
  • Page 62 3 of motor no. 3. AI 4 0-10V Remote Signal from plant to the ACP LINK for remote control of setpoint 2 the capacity setpoint for compressor no. 2. Only used with operating mode “Remote individual”. AI 5 PT1000...
  • Page 63 AI 11 CN13 0-10V Remote Signal from plant to the ACP LINK for remote control of setpoint 1 / the capacity setpoint for the complete ACP unit (when common used with operating mode “Remote”) or for compressor no.
  • Page 64 Comment AO 1 0-10V VSD speed Signal from ACP LINK to electrical panel with speed set setpoint 1 point for motor/drive on compressor no. 1. Only required for operation with variable speed. Must be connected to analog input for speed set point on the variable speed drive.

  • Page 65: Function Overview

    12 Function overview The functions described in the section below are related to the PLC in the ACP LINK panel. The CM-SW modules also include various functions for surveillance and operation of the compressors. Find more information on that in ST-150.

  • Page 66: Protection Functions

    Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) Diagnosis CM- Signals from the CM-IO module for the 91-96 31-38 IO Eco system optional economizer system are (optional) diagnosed for high or low levels and plausibility.
  • Page 67 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) Temperature signal (if available) is used for validation in case presssure is above high signal value of sensor. Discharge Surveillance for low discharge pressure. 14, 15 pressure low A warning is issued when the warning limit is exceeded.
  • Page 68 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) exceeded for the timer period. Lubricating pressure is defined as the difference between oil pressure after filter (before compressor) and suction pressure. Oil system Surveillance for high oil system 70, 71 pressure drop pressure drop.
  • Page 69 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) is issued when the alarm limit is exceeded. Surveillance is not active during the start phase. The surveillance is timer delayed at start of first compressor following low oil temperature delay timer.
  • Page 70 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) 2.18 Oil separator Surveillance for high level in oil level high separator. A warning is issued when the high level sensor detects oil (only when at least one compressor is running).
  • Page 71 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) period. When no compressor eco-valve is enabled, then an alarm will be issued when the high level sensor detects liquid refrigerant. 2.24 Eco system Surveillance for low eco system suction 139, 140 18, 21 superheat low...
  • Page 72 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) 2.28 Compressor Surveillance of the feedback from the 121, 122, feedback low compressor: compressor feedback is negative when the compressor module is off-line, has an active fault, its operation is disabled, the start is disabled, compressor run status differs from start signal or device check fails.
  • Page 73 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) 2.34 Oil pump Surveillance for running feedback and 38, 49 13, 16 feedback low lack of oil pressure of the oil pump. Run feedback is negative when digital run signal from oil pump is different from start signal.

  • Page 74: Control Functions

    Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) 2.38 PID regulator A warning is issued when the internal error PID regulator has an error and the regulation mode is "auto". This error can only be reset by power cycling the PLC.
  • Page 75 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) required capacity is below 1/3 of the minimum capacity of the compressor. Compressor Control of correct loading and unloading 131, 132, 1, 43, 44, capacity of the compressor, taking into account 133, 141, 46, 50,...
  • Page 76 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) AI12 (20% input corresponds to 0% reduction and 100% input corresponds to 100% reduction, in operating mode “auto” only). Capacity limiter Slide valve position (CR) is limited in 2, 6, 7, 1, 43-45, - CR only...
  • Page 77 3.17 Compressor eco Compressor eco-valve control is 80-84, 91- valve enable enabled, when the optional BITZER economizer system is active and enable or the remote eco system is enabled through the external digital input. For CT-600-2...

  • Page 78: Alarm, Warning And Timer Functions

    Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) both options no eco related alarms may be active. 3.18 Eco system Eco liquid valve is only opened, when liquid valve the enabled economizer system has no alarms and at least one compressor eco-valve is open.
  • Page 79 Function Description Related Related Related alarms, param. timers warnings (see 13.1) (see 13.2) (see 14.1) Alarm handler Alarm status is set and reset by "all" protection function and acknowledged by alarm handler. Alarm can only be acknowledged if status is reset. Most alarms will reset automatically.

  • Page 80: Parameter And Timer Overview

    13 Parameter and timer overview 13.1 Overview of parameters in ACP LINK PLC/HMI Communication parameters Communication port Setting Default value PLC name NodeName MAIN_CONTROLLER1 For subsequent units on same network: MAIN_CONTROLLER2, MAIN_CONTROLLER3 .. PLC Ethernet 1 192.168.1.100 (Ethernet network) Subnet 255.255.255.0...
  • Page 81 Configuration parameters Description Param. page Default Default on HMI value unit Nominal frequency Plant 1 System control voltage for CM Plant 1 Max capacity change Plant 1 Module capacity limiter step Plant 1 100.0 m3/h Max no. of alarms in timespan window Plant 1 Alarm timespan window size Plant 1...
  • Page 82 Description Param. page Default Default on HMI value unit PT1000 temp. sensor high signal Plant 4 °C NTC temp. sensor low signal Plant 4 °C NTC temp. sensor high signal Plant 4 °C Remote suc. press. sens. enable/disable Plant 4 Remote suc.
  • Page 83 Description Param. page Default Default on HMI value unit Motor 1, 2, 3 current AI calibration factor A Comp./Motor 3 - 1, 2, 3 Motor 1, 2, 3 speed AO calibration factor A Comp./Motor 3 - 14.29 1, 2, 3 Motor 1, 2, 3 speed AO calibration factor B Comp./Motor 3 - 1, 2, 3...
  • Page 84 Description Param. page Default Default on HMI value unit PID TV suction pressure (D) PID 2 - 1 PID TD suction pressure PID 2 - 1 PID setpoint ramp limit suction pressure PID 2 - 1 10.0 min/bar PID deadband suction pressure PID 2 - 1 PID output high limit suction pressure PID 2 - 1...

  • Page 85: Overview Of Timers In Acp Link

    Eco superheat low alarm Economizer °C Eco superheat high warning Economizer °C Eco superheat high alarm Economizer °C 13.2 Overview of timers in ACP LINK Description Param. page Default on HMI value (s) Suction press. low warning time Timer 1 3600 Suction press.

  • Page 86: Overview Of Parameters In Cm-Sw-01 - Compressors

    Description Param. page Default on HMI value (s) Alarm delay LP waiting for HP Timer 3 Alarm delay high oil sys. temp. Timer 3 Alarm/Warning delay start perm. Timer 3 Alarm delay external alarm Timer 3 Motor 1, 2, 3 feedback low time Timer 4 - 1, 2, 3 Compressor 1, 2, 3 feedback low time Timer 4 - 1, 2, 3...
  • Page 87 Parameter Section User Setting Minimum compressor capacity limit Config 25.00 Separate start signal from safety chain Config Compressor serial number (actual) CompInfo Number as on name plate Customer, Location CompInfo Site description System name, Compressor number CompInfo ACP type designation and compressor no. on rack Enable motor phase monitoring Phase...
  • Page 88 Parameter Section User Setting Requested capacity at or above which EcoValve OS.A85: 70 ECO valve can be opened at maximum OS.A95: 95 Requested capacity below which ECO EcoValve OS.A85: 55 valve shall be closed at minimum VI OS.A95: 90 Requested capacity below which ECO EcoValve OS.A85: 55 valve shall be closed at maximum VI...

  • Page 89: Overview Of Parameters In Cm-Io - Oil And Economizer System

    13.4 Overview of parameters in CM-IO – oil and economizer system Only parameters different from default are shown here. Further information see ST-150. Parameter Section User Setting COM 1 address COM 1 Oil system: 11 Eco system: 12 Compressor type selection Config None Discharge pressure selection...
  • Page 90 AI and AO parameters Signal Default type Calib.AI ScaleMinAi – ScaleMaxAi Current motor 1 0-10V 0-1000 Current motor 2 0-10V 0-1000 Current motor 3 0-10V 0-1000 Remote capacity setpoint 2 0-10V 0-100 Suction temperature PT1000 0-1000 Discharge temperature PT1000 0-1000 Suction Pressure AKS 33: 4-20mA AKS 33: 0-1000...

  • Page 91: Alarms And Warnings Overview

    14 Alarms and warnings overview 14.1 Overview of alarms and warnings in ACP LINK PLC/HMI Alarm / warning description Related Possible causes function Suction pressure low Too little load / too much capacity Suction stop valve(s) (partly) closed Suction pressure high...
  • Page 92 Alarm / warning description Related Possible causes function Oil temperature low 2.14 Error thermostatic element Too high flow of cold liquid on secondary side oil cooler Oil temperature high 2.15 Error thermostatic element Too low flow of cold liquid on secondary side oil cooler Termosyphon system not working properly Oil separator temperature low...
  • Page 93 Alarm / warning description Related Possible causes function External input start permission 2.32 Missing external start permission external Motor PTC oil pump 2.33 Error oil pump motor/drive Booster oil pump motor feedback 2.34 Oil pump not starting on request Oil pump running without start request Module capacity limiter Capacity limiter active CR max position limiter...
  • Page 94 Alarm / warning description Related Possible causes function PID regulator error 2.38 Inconsistent parameters for PID regulator. Correct parameters and power cycle the PLC Sensor suction pressure IO low Sensor or connection error signal Sensor suction pressure IO high Sensor or connection error signal Sensor suction temperature IO Sensor or connection error...
  • Page 95 Alarm / warning description Related Possible causes function Eco oil pot level high 2.29 Oil not returning (or too slow) from eco collector to compressors Error in solenoid valve(s) eco oil return system Stop valve(s) eco oil return system (partly) closed Sensor eco pressure low signal Sensor or connection error Low pressure due to evacuation...

  • Page 96: Overview Of Compressor Specific Alarms

    Alarm / warning description Related Possible causes function 151, Compressor 1, 2, 3: motor current 2.21 Motor current too high 152, high High load (high suction pressure or discharge pressure) 161, Compressor 1, 2, 3: discharge 2.12 Liquid to compressor (suction or eco) 162, superheat low Compressor started cold (takes time to heat up)
  • Page 97 Alarm / warning Related Possible causes description function Envelope: SDT Low 2.28 Envelope: Startup Timeout 2.28 Envelope: Configuration 2.28 Failure Oil Level Low 2.28 No/insufficient oil supply to compressor Too low oil level in separator Oil return valve or oil stop valve not opening correctly Motor Phase Loss 2.28 Motor Phase Sequence...
  • Page 98 Alarm / warning Related Possible causes description function Motor Temperature 2.28 Cooldown Sensor: Discharge 2.28 Sensor or connection error Temperature Sensor: Aux Temperature 2.28 Sensor or connection error Sensor: Suction Pressure 2.28 Sensor or connection error Sensor: Discharge Pressure 2.28 Sensor or connection error Sensor: Oil protection 2.28...
  • Page 99 Alarm / warning Related Possible causes description function Output Current: Additional 2.28 fan (Head fan) Low Output Current: Additional 2.28 fan (Head fan) High Output Current: CR-1 Low 2.28 Output Current: CR-1 High 2.28 Output Current: CR-2 Low 2.28 Output Current: CR-2 High 2.28 Output Current: CR-3 Low 2.28...
  • Page 100 Alarm / warning Related Possible causes description function Slider: Moving CR slider 2.28 failed Slider: Gap between the two 2.28 sliders Slider: Gap between zero 2.28 and Vi slider Slider: Reserved3 2.28 Slider: Reserved4 2.28 Slider: Reserved5 2.28 Oil Flow Low 2.28 Oil Pressure Low 2.28...
  • Page 101 Alarm / warning Related Possible causes description function Dev.check: ctrl source 2.28 Module not setup correctly for modbus (serial) communication Dev.check: ctrl timeout fct 2.28 Module not setup correctly for modbus (serial) communication Dev.check: ctrl timeout time 2.28 Module not setup correctly for modbus (serial) communication Dev.check: refrigerant 2.28...

  • Page 102: Modbus Tcp/Ip Signal List

    15 Modbus TCP/IP signal list See section 9.10 and 13.1 for Ethernet connection setup and parameters. NOTICE The tables in this section show the Modbus addresses as 16-bit words (%MW). When reading a double word (%MD), the address must be divided by two. Example (see first line in section 15.3): “number of enabled compressors”...

  • Page 103: List Of Warnings And Addresses On Modbus Tcp/Ip

    Address Alarm No. Alarm signal %MW40002:X15 Status SP-IO system %MW40015 %MW40015:X0 Not used %MW40015:X15 Not used 15.2 List of warnings and addresses on Modbus TCP/IP See table in section 14.1 for complete list of warning and warning numbers. Address Warning No. Warning signal %MW40016 %MW40016:X0...

  • Page 104: List Of Data Signals And Addresses On Modbus Tcp/Ip

    15.3 List of data signals and addresses on Modbus TCP/IP Address Signal Signal name Unit %MW40032 %MW40033 Number of enabled compressors %MW40034 %MW40035 Number of running compressors %MW40036 %MW40037 Number of compressors with fault %MW40038 %MW40039 Number of compressors with eco valve open %MW40040 %MW40041 Module capacity setpoint...
  • Page 105 Address Signal Signal name Unit %MW40124 %MW40125 Status economizer suction bypass %MW40126 %MW40127 Status economizer oil return %MW40128 %MW40129 Switch economizer liquid level high %MW40130 %MW40131 Switch economizer oil level %MW40152 %MW40153 Compressor 1 suction pressure bara %MW40154 %MW40155 Compressor 1 discharge pressure bara %MW40156 %MW40157...
  • Page 106 Address Signal Signal name Unit %MW40208 %MW40209 Compressor 2 status economizer valve %MW40210 %MW40211 Compressor 2 status high pressure switch %MW40212 %MW40213 Compressor 2 status oil flow/level switch %MW40214 %MW40215 Compressor 2 status oil pressure switch -/bara (OS85) / oil pressure (OS95) %MW40216 %MW40217 Compressor 2 general alarm status...
  • Page 107 Address Signal Signal name Unit %MW40272 %MW40273 M172 - DI 1 - Emergency stop %MW40274 %MW40275 M172 - DI 2 - External alarm %MW40276 %MW40277 M172 - DI 3 - Start permission external %MW40278 %MW40279 M172 - DI 4 - Current limiter %MW40280 %MW40281 M172 - DI 5 - Run signal motor oil pump...
  • Page 108 Address Signal Signal name Unit %MW40352 %MW40353 M172 - AO 1 - Speed set motor 1 %MW40354 %MW40355 M172 - AO 2 - Speed set motor 2 %MW40356 %MW40357 M172 - AO 3 - Speed set motor 3 %MW40392 %MW40393 PID regulator PV %MW40394 %MW40395...
  • Page 109 Achtung! Diese Seite kann es nicht geben! Es ist eine ungerade letzte Seite oder die Seite nach er letzten Seite! 80060902 // 06.2020 Subject to change Änderungen vorbehalten BITZER Kühlmaschinenbau GmbH Peter-Schaufler-Platz 1 // 71065 Sindelfingen // Germany Tel +49 7031 932-0 bitzer@bitzer.de // www.bitzer.de...

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