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Summary of Contents for Zehnder Rittling CALADAIR EASY 5.0
- Page 1 Decorative radiators Comfortable indoor ventilation Heating and cooling ceilings Clean air solutions Zehnder EASY 5.0 Installation, Service and User Manual always the best climate...
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Page 2: Table Of Contents
Zehnder EASY 5.0 Contents Physical presentation of the PG 5.0 touchscreen __________________________________________________________ 5 Physical presentation of the CLD-283 controller __________________________________________________________ 6 Electrical connection of CLD-283 controller/PG 5.0 DISPLAY ______________________________________________8 Zehnder Easy 5.0 and Zehnder EDT2 remote touchscreen controls (Optional) _______________________________8 4.1. - Page 3 Zehnder EASY 5.0 Contents 16.6.1. Machine status ________________________________________________________________________________________ 43 16.6.2. Guidelines ____________________________________________________________________________________________ 44 16.6.3. Faults and alarms _____________________________________________________________________________________ 46 On-board web server __________________________________________________________________________________ 48 Temperature control modes ____________________________________________________________________________ 48 18.1. Selection of temperature control mode _________________________________________________________________ 49 18.2. Constant supply air temperature _______________________________________________________________________ 50 18.3.
- Page 4 Zehnder EASY 5.0 Legal regulations All rights reserved. This manual has been compiled with the utmost care. Nevertheless, the publisher accepts no liability for damage caused by missing or incorrect details in this operating manual. We reserve the right at any time and without prior notification to change the content of these instructions in part or as a whole.
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Page 5: Physical Presentation Of The Pg 5.0 Touchscreen
Zehnder EASY 5.0 1. Physical presentation of the PG 5.0 touchscreen The PG 5.0 touchscreen replaces the ED9200 display. The 4.3’’ touch technology with a display of 65,000 colours allows high-quality images and advanced features that facilitate human-machine interaction and make navigation between the different screens easier. It is protected against the weather and UV rays thanks to its IP65 protection rating and a swivel cap attached directly to the faceplate of the machine. -
Page 6: Physical Presentation Of The Cld-283 Controller
Zehnder EASY 5.0 2. Physical presentation of the CLD-283 controller The CLD-283 controller is physically very similar to the previous version. The number of inputs/outputs remains unchanged, as do the dimensional characteristics. Touchscreen port Status Port P1 Port P2 LEDs RS485 RS485 8 DI... - Page 7 Zehnder EASY 5.0 (7) Digital outputs DO 24 V AC Common to DOs and internally connected to G (+) 24V AC polarised outputs (controller supply The DO outputs provided for the user must be DO1…DO7 voltage), connected to G0 relayed or the 3.15A protection fuse on the (-) internally controller’s 24V AC power supply will blow.
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Page 8: Electrical Connection Of Cld-283 Controller/Pg 5.0 Display
Zehnder EASY 5.0 3. Electrical connection controller CLD-283/PG 5.0 DISPLAY +24V DC RX/TX+ 0V DC RX/TX- Modbus communication plug 24V DC power supply plug The display has a 2-pole plug for 24V DC power supply and a 3-pole plug to allow Modbus communication with the controller. -
Page 9: Definition Of Thermal Sequences
Zehnder EASY 5.0 5. Definition of thermal sequences 5.1. General The temperature control is defined by 3 different thermal sequences illustrated by a pictogram visible from the main screen (the size of the coloured area indicates the calculated requirement of the sequence): Cooling sequence (management of the cold coil: BF cold water coil, DX or DXR direct expansion coil, CO coil ■... -
Page 10: Demand And Need For Heating
Zehnder EASY 5.0 Thermal sequences with no heat recovery requirements: Heat exchanger/bypass output Cooling requirement (summer) Heating requirement (winter) Temp. Measured < Setpoint Temp. Measured > Setpoint Temp. Outdoor < Return temperature Temp. Outdoor > Return temperature Cooling Heating Cooling coil Heat exchanger Cooling coil Cooling... -
Page 11: Initialisation Of Thermal Sequences At Start-Up
Zehnder EASY 5.0 6. Initialisation of thermal sequences at start-up Initialisation at start-up allows the machine to be started at an operating point that is as close as possible to the one that will be recalculated during operation in order to avoid any source of discomfort and unnecessary energy consumption. The initialisation of the thermal sequence at start-up depends on the outdoor temperature measured at the time the machine is started: Outdoor temperature <... -
Page 12: Shutdown Sequence
Zehnder EASY 5.0 8. Shutdown sequence When the shutdown sequence is active, it can be identified by the pictogram in the in the “operating mode” area of the home page. The shutdown sequence occurs when at least one of the following conditions is met: Appearance of an alarm whose action requires the normal shutdown of the unit (note that some alarms are ■... - Page 13 Zehnder EASY 5.0 The cooling function is managed by the following parameters: Parameter Configuration Factory setting Activated Authorisation to run (user condition) Activated Deactivated Start time (adjustable) 00:00 Time range for operating authorisation End time (adjustable) 07:00 Supply air fan (adjustable) Fan offset (applied to normal HS setpoints) Return air fan (adjustable) Outdoor temperature threshold reached during the day...
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Page 14: Anti-Icing Function By Reducing The Supply Air Volume
Zehnder EASY 5.0 When the function is activated, the machine goes through a stop and start phase. It then starts a phase of 180 seconds (adjustable) during which the unit operates with the cooling parameters set (normal operation fan setpoint + offset if present) in order to properly irrigate the temperature sensors and ensure that the measured values are stabilised and reflect the current situation. - Page 15 Zehnder EASY 5.0 It should be noted that stopping/reducing the supply air volume and maintaining the return air volume at the nominal value requires fresh air inlets at the windows (or any other similar device) in order to control the pressure in the building and the minimum air volume at the return.
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Page 16: Anti-Fire Function
Zehnder EASY 5.0 11. Anti-fire function 11.1. General information on the function and its possible configuration Access path to the function (Access level: Expert) Step 1 → Step 2 → Step 3 → Step 4 Settings and configuration Function settings Main menu Cold recovery Sensors... -
Page 17: Fire Alarm (N°58)
Zehnder EASY 5.0 Parameter Possible choices Details Enables the operation or non-operation of the anti-fire Function activation Activated or deactivated function. The machine is stopped when the anti-fire function is active. The fans are switched off immediately even Stop with a declared heating BE; there is no post- ventilation. -
Page 18: Commissioning Procedure
Zehnder EASY 5.0 12. Commissioning procedure The commissioning procedure can follow the following sequence of steps: Symbol Step Description Additional information PG 5.0 Installation and electrical wiring of options (if present) 3-way valves hot / cold See installation manual Hot / cold circulators See installation manual Changeover thermostat See installation manual... -
Page 19: Time Period Settings
Zehnder EASY 5.0 13. Time period settings 13.1. General Access path to the function (Access level: Expert) Step 1 → Step 2 → Step 3 → Step 4 Time settings Main menu Period 1 Period 2 Monday Date and time Start Start From... -
Page 20: Priorities For Time Periods And External Controls
Zehnder EASY 5.0 13.2. Priorities for time periods and external controls Where time periods overlap, the following should be considered: When a reduced operation time period and a normal operation time period overlap, the normal operation time period ■ has priority over the reduced operation time period When there is no active operation, i.e. -
Page 21: Holiday Calendar
Zehnder EASY 5.0 Period 1 Period 2 Monday Start Start Normal Reduced Copy from Monday Friday Programming of time schedules (Monday) Cooling Night* Normal Reduced Operation based on the ventilation unit Cooling Night* Normal Reduced *The night cooling will only work if the activation conditions are met. If different settings are required on other days of the week, set the time schedules for the corresponding days accordingly. -
Page 22: Recommendations For Time Period Settings In The Lobby Version
Zehnder EASY 5.0 Holiday calendar 1/2 Period 1 From Period 2 From Period 3 From Period 4 From From Period 5 Period 6 From By default, the 1st day of the year is a day that is part of the holiday period. The “holiday”... -
Page 23: Recommendations For Time Period Settings In The Eco Et Mac2 Versions
Zehnder EASY 5.0 So Vac Period 1 Period 2 Monday Start Start Normal Reduced Copy from Monday Friday The use of a normal operation schedule allows the fans to be forced to the normal operation setpoint without management. This can be useful, for example, when you want to purify the atmosphere between two periods of occupancy. -
Page 24: Checks Prior To Any Diagnosis
Zehnder EASY 5.0 14.2. Checks prior to any diagnosis Before undertaking any diagnosis procedure, the technician must: check the network and its compatibility with the unit, in particular: ■ Actual layout: does the nominal operating point of the system (unit + network) enable the unit to operate correctly? Examples: MAC2/QUATTRO: duct network diameter too small, LOBBY: duct network too short, etc.) Type of fan controller (speed, pressure or volume): is the type of fan controller in the unit consistent with the type of network? -
Page 25: Checking An Active Bms
Zehnder EASY 5.0 14.4.1. Checking an active BMS The setpoints from a BMS have priority over all other internal and external setpoints. The automatic overwriting of a setpoint that has just been modified from the display by another value is a sign that a communication port is functional and an external system (BMS, CTM, etc.) is sending information to the controller from one of the P1 RS485 or TCP-IP communication ports. -
Page 26: Output Checks
Zehnder EASY 5.0 14.4.3. Output checks Access path to the function (Access level: Service) Step 1 → Step 2 → Step 3 Main menu Inputs - Outputs Master controller Analogue inputs AI - UAI From Digital inputs DI - UDI (dry contacts) screen Analogue outputs AO (0-10V) Digital outputs DO (polarised 24 V AC) -
Page 27: Manual Control Of Outputs
Zehnder EASY 5.0 14.4.4. Manual control of outputs Access path to the function (Access level: Expert) Step 1 → Step 2 → Step 3 Manual control of outputs Main menu From Analogue outputs screen Digital outputs Analogue outputs Area to click Digital outputs The controller has a manual control function for the analogue AO and digital DO outputs, which allows individual,... -
Page 28: Alarms
Zehnder EASY 5.0 15. Alarms 15.1. General The operation and management of the alarms are defined by several parameters: The class: A, B, or C ■ The type of action ■ The time limit and the unit of time ■ The threshold (for certain parameters) ■... -
Page 29: Alarm Time Limit And Time Unit
Zehnder EASY 5.0 15.4. Alarm time limit and time unit The time limit specifies how long the cause must be present to activate the alarm. The time limit is based on the time of occurrence. It is a condition available for all alarms. There is no time limit for the disappearance of the cause. -
Page 30: Alarm History
Zehnder EASY 5.0 15.8. Alarm history Access path to the function (Access level: Guest) Step 1 → Step 2 → Step 3 Active alarms Alarm history 15/06/2022 - 11:46:16 15/06/2022 - 11:47:34 Rank: Class: A Status: Active From Name: screen Previous Next Area to... -
Page 31: Alarm And Fault Table
Zehnder EASY 5.0 15.10. Alarm and fault table Time Value/thres- Description Class Action Details/explanations Possible causes limit hold • Faulty fan ECO/DIVA: the fan • Faulty fan power supply operation feedback • Speed control signal problem (HS information from the controller output, faulty wiring/ pressure switch has not connection between fan and... - Page 32 Zehnder EASY 5.0 Time Value/thres- Description Class Action Details/explanations Possible causes limit hold See Id=1 Return air fan Normal supply air See Id=1 supply air fan 120s See Id=1 supply air fan (VAS) fault (VAR) fault stop* fan (VAS) (VAS) fault fault The operational feedback The wheel is blocked or has a...
- Page 33 Zehnder EASY 5.0 Time Value/thres- Description Class Action Details/explanations Possible causes limit hold The DI digital input is active (dry contact closed). The machine is stopped as long External stop as the contact is closed. This overrides the time settings. The machine is switched OFF from the on/off button on the home page.
- Page 34 Zehnder EASY 5.0 Time Value/thres- Description Class Action Details/explanations Possible causes limit hold The measured air volume or the measured pressure has exceeded the threshold value beyond the specified time limit (30 LOBBY: mins). The threshold value 50Pa is equal to the current setpoint +/- threshold MAC2/ value.
- Page 35 Zehnder EASY 5.0 Time Value/thres- Description Class Action Details/explanations Possible causes limit hold At least one output is in manual mode. This alarm works in conjunction with alarms 113/115/ Output in 116/117/118/119/125/126/140. manual mode This also indicates that the heating and/or cooling outputs have been switched to manual mode.
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Page 36: Fan Feedback And Difference Thresholds
Zehnder EASY 5.0 Time Value/thres- Description Class Action Details/explanations Possible causes limit hold Faulty fresh air preheating Incorrect setting of the function control loop Internal control Normal Incorrect internal settings of the system fault stop* CLD-283 controller *Normal stop = shutdown including post-ventilation **Rapid stop = no post-ventilation, all outputs are deactivated instantaneously when the fault occurs. -
Page 37: Frost Protection Alarm Details
Zehnder EASY 5.0 15.12. Frost protection alarm details When the frost protection alarm is active, this means that the temperature of the frost protection thermostat bulb attached to the hot water heating coil has fallen below +5°C (factory setting) and that there is a risk of the heating coil freezing up when filled with primary water (without MEG/MPG anti-freeze additive). -
Page 38: Modbus Rtu Rs485 Communication
Zehnder EASY 5.0 16.2. Modbus RTU RS485 communication Access path to the function (Access level: Expert) Step 1 → Step 2 → Step 3 → Step 4 Communication settings Port P1 Modbus / Bacnet settings Main menu Modbus RTU RS485 slave Modbus RTU - Bacnet MS/TP From Baud rate:... -
Page 39: Modbus Tcp Communication
Zehnder EASY 5.0 Parameter Possible value range Baud rate 9600/14400/19200/28800/38400/57600/76800/115200 Address (slave) 1…247 Number of data bits Parity None/Even/Odds Number of stop bits 1/ 2 16.3. Modbus TCP communication Access path to the function (Access level: Expert) Step 1 → Step 2 →... -
Page 40: Bacnet Ms/Tp And Bacnet Ip Communication
Zehnder EASY 5.0 16.4. Bacnet MS/TP and Bacnet IP communication Access path to the function (Access level: Expert) Step 1 → Step 2 → Step 3 → Step 4 Communication settings TCP/IP 1/2 port settings Main menu Protocol: Bacnet IP Modbus RTU - Bacnet MS/TP From Device ID:... - Page 41 Zehnder EASY 5.0 BACnet MS/TP BACnet IP Details (RS485) 9600/14400/19200/28800/38400/57600/768 Speed 00/115200 bauds It is made up of 2 parts, the bottom Device ID and the top Device ID, which are concatenated to form the complete Device ID. Device ID Top Device ID (01234) + Bottom Device ID (56789) = Device ID (0123456789)
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Page 42: Ip Configuration (Dhcp)
Zehnder EASY 5.0 16.5. IP configuration (DHCP) A DHCP (Dynamic Host Configuration Protocol) is a network protocol used on Internet Protocol (IP) networks for the dynamic distribution of network configuration parameters, such as IP addresses, DNS servers and other services. The controller can be configured to obtain its IP address in two ways: Either from a DHCP server (dynamic addressing) ■... -
Page 43: Machine Status
Zehnder EASY 5.0 16.6.1. Machine status Scaling Rea- Function Address Variable type Address Unit Entry factor Details ding Modbus Modbus Modbus BACnet Modbus Modbus: 0=Stop/1=start 2=reduced operation/ 3=normal operation/ 7=CO management/8=Free Cooling/9=post-ventilation 10=Fire/13=frost protection Current status of the Input MSV, BACnet: short unit... -
Page 44: Guidelines
Zehnder EASY 5.0 16.6.2. Setpoints Scaling Factory Type Rea- Address Variable Address Unit Entry factor setting Register Details ding Modbus Modbus BACnet Modbus Modbus Modbus Modbus: 0=Inactive/1=reduced operation/ 2=normal operation/ 4=AHU stop Setpoint of Holding MSV, short operating mode Register 30796 BACnet: 1=Inactive/2=reduced... - Page 45 Zehnder EASY 5.0 Scaling Factory Type Rea- Address Variable Address Unit Entry factor setting Register Details ding Modbus Modbus BACnet Modbus Modbus Modbus Air law Used only if temperature temperature Holding °C short AV, 30828 control setpoint external Register (supply or return) by air law temperature 4 Air law Used only if temperature...
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Page 46: Faults And Alarms
Zehnder EASY 5.0 Scaling Factory Type Rea- Address Variable Address Unit Entry factor setting Register Details ding Modbus Modbus BACnet Modbus Modbus Modbus Holding MSV, Only for DIVA and QUATTRO Setpoint 1 CO 1036 short Register 31036 versions Holding Only for DIVA and QUATTRO Setpoint 2 CO 1038 short... - Page 47 Zehnder EASY 5.0 Type Address Variable Address Reading Entry Register Details Modbus Modbus BACnet Modbus 0=no alarm / 1=alarm present Hot water coil frost Input bool BV, 20066 Only for machine equipped with a hot water heating protection fault Status coil 0=no alarm / 1=alarm present Rotary heat...
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Page 48: On-Board Web Server
Zehnder EASY 5.0 17. On-board web server The CLD-283 electronic controller has an on-board web server that now runs on HTML5, replacing JAVA which is no longer supported. It can be accessed via any recent Internet browser (download the add-ons if necessary or update the Internet browser used). -
Page 49: Selection Of Temperature Control Mode
Zehnder EASY 5.0 18.1. Selection of temperature control mode The controller has 4 different temperature control modes: Constant supply temperature ■ Variable supply air temperature depending on the outdoor temperature (supply air law) ■ Constant return temperature ■ Variable return air temperature depending on the outdoor temperature (return air law) ■... -
Page 50: Constant Supply Air Temperature
Zehnder EASY 5.0 If the ventilation unit needs to provide the heating/cooling of the building on its own (in the case of new buildings), the unit must be equipped with the corresponding coils or must control remote coils in the ducts. In this case, it is preferable to regulate the temperature on the air return (extraction), which reflects the indoor conditions of the building, in particular with an air law based on the outdoor temperature. -
Page 51: Supply Air Temperature In Relation To The Outdoor Temperature (Supply Air Law)
Zehnder EASY 5.0 18.3. Supply air temperature in relation to the outdoor temperature (supply air law) The supply air temperature control can be identified by the pictogram in the “operating mode” area of the home page. In addition to the constant supply air temperature control mode, this temperature control mode allows the effects of outdoor temperature conditions to be incorporated into the performance of the building. -
Page 52: Return Air Temperature In Relation To The Outdoor Temperature (Return Air Law)
Zehnder EASY 5.0 18.5. Return air temperature depending on the outdoor temperature (return air law) The temperature control using air law can be identified by the presence of the pictogram in the “operating mode” area of the home page. This temperature control mode has the same characteristics as the constant return temperature control mode, but it also allows the influence of outdoor temperature conditions on the behaviour of the building to be taken into account, thus further improving comfort while minimising energy consumption: the effects of cold walls in winter and solar radiation in summer are thus minimised. -
Page 53: General
Zehnder EASY 5.0 19.1. General For all machine versions, the speed of the fans is controlled via an analogue 0-10V control signal directly from the controller. The fans start at a control voltage of 1V (minimum speed) and stop at a voltage below 1V. The maximum speed is achieved when the control voltage = 10V. -
Page 54: Diva Controller
Zehnder EASY 5.0 19.3. DIVA controller The DIVA controller is a closed-loop control of the CO on the return air by influencing the fan speed. The speed of the supply and return air fans is adjusted individually and continuously according to an adjustable law from 3 CO /offset fan pairs in order to maintain a CO concentration measured on the return... -
Page 55: Lobby Controller
Zehnder EASY 5.0 ppm CO2 Fan offset (%) (adjustable) (adjustable) (corresponding fan % = 40% = ECO reduced operation) (corresponding fan % = 55%) Offset +Offset 1000 1000 (corresponding fan % = 70% = ECO reduced operation) The 3 CO and offset terminals can be changed by the user. -
Page 56: Mac2 Controller
Zehnder EASY 5.0 When the measured air pressure is lower than the setpoint, the controller increases the value (0-10V voltage) of the fan speed setpoint signal to increase the air volume and thus the resulting pressure, and vice versa. It should be noted that as the network has a variable air volume, the thermal power delivered by any heating and/or cooling coils is variable, whether they are integrated into the ventilation unit or not. -
Page 57: Quattro Controller
Zehnder EASY 5.0 19.6. QUATTRO controller The QUATTRO controller is a closed-loop air volume controller based on the CO concentration at the return. Constant volume flow LS The speed of the supply and return air fans is adjusted individually and continuously Constant volume according to an adjustable law in order to maintain a CO concentration measured on the... -
Page 58: Control Of The Electric Air Heater (Be)
Zehnder EASY 5.0 QUATTRO Fan offset (m ppm CO (different for each machine model) (adjustable) (adjustable value) (no offset = reduced volume flow in MAC2 version of the corresponding AHU model) Offset +Offset 1000 Value that depends on the AHU model to obtain the volume of normal operation in MAC2 version of the 1000 corresponding AHU model) See XV.11 Fan feedback and difference thresholds... -
Page 59: Overheating Protection Via Safety Thermostat Ths
Zehnder EASY 5.0 100% 100% Heating requirement calculated by the PID according to the difference between the setpoint temperature and the temperature measured at the supply or return depending on the temperature control mode used Status of the DO output for controlling the electric heating coil for different calculated PWM values time 20.2. -
Page 60: Control Of The Hot Water Heating Coil
Zehnder EASY 5.0 21. Control of the hot water heating coil (BC) 21.1. Modulation of thermal output The hot water heating coil is managed by the heating sequence and therefore has its own PID control loop which calculates a heating requirement from the supply (or return) temperature setpoint and the measured supply (or return) temperature. -
Page 61: Control Of The Hot Water Pump
Zehnder EASY 5.0 22. Control of the hot water pump Access path to the function (Access level: Expert) Step 1 → Step 2 → Step 3 → Step 4 Settings and configuration Actuator settings 2/2 Main menu Sensors Cooling From Actuators Bypass exchanger screen... -
Page 62: Frost Protection
Zehnder EASY 5.0 23.2. Frost protection The frost protection of the cold water coil must be ensured by a sufficient concentration of anti-freeze liquid (MEG or MPG) in accordance with the cold water generator and the temperature operating range of the cold water coil. If the use of a frost protection thermostat is considered, it must be external to the machine. - Page 63 Zehnder EASY 5.0 It operates in an on/off mode based on an algorithm that compares the actual value of the fresh air inlet temperature in the plate heat exchanger with the setpoint. The electric fresh air preheating coil therefore only comes into operation when the outside air temperature is below -5°C.
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Page 64: Control Of The Rotary Heat Exchanger
Zehnder EASY 5.0 26. Control of the rotary heat exchanger 26.1. General The rotary heat exchanger consists of a wheel (exchanger) driven by a stepper motor via a belt. Unlike the plate heat exchanger, the rotary heat exchanger does not have a bypass function, either to manage the recovery rate or to manage the anti-icing protection. -
Page 65: Control Of The Plate Heat Exchanger
Zehnder EASY 5.0 1: GND 2: 0-10V 3: A 4: B 5: GND 6: +12V 7: DI3 8: RL_NC DIG.RELAY OUT 9: RL_C 10: RL_NO 11: GND 12: DI2 13: GND 14: DI1 The feedback from the heat exchanger uses the normally open NO output DIG RELAY OUT (wired between (9) and (10)). When there is a fault, the contact remains open and closes if the wheel is working properly. -
Page 66: Modulation Of The Heat Recovery Rate
Zehnder EASY 5.0 27.2. Modulation of the heat recovery rate The bypass is managed by the heat recovery sequence and therefore has its own PID control loop which calculates an energy recovery requirement from the supply air temperature setpoint and the measured supply air temperature. This requirement is converted into a 0-10V control signal which is used as a setpoint for the bypass flap position. - Page 67 Zehnder EASY 5.0 Bypass temperature setpoint (exhaust) Return air Bypass Fresh air Exhaust temp. When the anti-icing function is activated, the modulating bypass control is managed by specific PID parameters that are different from the PID parameters that manage the recovery rate. This allows the dynamics of the actuator to be adapted for this more constrained operating phase (need for greater responsiveness) in order to maintain the exchanger's air temperature ≥+3°C.
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Page 68: Lobby Pressure Transducers
Zehnder EASY 5.0 28. LOBBY pressure transducers The LOBBY pressure transducer is a differential pressure transducer. It converts the pressure difference between the atmospheric pressure and the pressure in the associated air stream (supply or return) into an analogue signal that can be evaluated by the controller. Its output signal is 0-10V and directly proportional to the measured differential pressure. -
Page 69: Mac2 / Quattro Pressure Transducers
Zehnder EASY 5.0 29. MAC2 / QUATTRO pressure transducers The MAC2 pressure transducer is a differential pressure transducer. It converts the pressure difference measured at the terminals of the fan's Venturi system (suction fan chamber) into an analogue 0-10V signal that can be processed by the controller. The output signal is 0-10V and directly proportional to the measured differential pressure. -
Page 70: Eco / Diva Fan Operating Control Pressure Switches
Zehnder EASY 5.0 Reference point Details Setting jumpers Zero setting (sensor must be in its operating position, pressure taps disconnected and fans off) Electrical connection terminal block Pressure taps P1(+) et P2(-) Setting the jumper position: Max. differential pressure rating (300 Pa / 1600 Pa / 5000 Pa depending on version) The jumpers are in the OFF position (position 0) 30. -
Page 71: Pt1000 Temperature Sensor
Zehnder EASY 5.0 Reference point Details P1 (+) Positive pressure tap P2 (-) Negative pressure tap Removable lid Setting Common terminal NC contact terminal (not used) NO contact terminal Control method: First of all, check the connection of the pressure tap tubes (crystal tubes) and that there is no moisture or foreign bodies (insects, grease, etc.) inside them. -
Page 72: Co Sensor
Zehnder EASY 5.0 The resistance of the sensor is 1000 Ohms at 0°C. The resistance versus temperature characteristic of the sensor is shown below: T (°C) R (Ohms) Characteristic sensor temperature PT1000 Temperature(°C) The control of the sensor is done with an ohmmeter and a second reference temperature sensor and must integrate the whole measuring loop: sensor + wiring + plug, as close as possible to the corresponding controller input. -
Page 73: Help With Setting Pid Parameters
Zehnder EASY 5.0 CO2 sensor Output signal concentration measured The CO sensor may be sensitive to dust and deposits. The preventive maintenance of the filters on the return air will allow the correct functioning of the sensor to be maintained over time and limit the deviation of the measurement. The ambient air outside contains about 300 to 600ppm of CO depending on the location. - Page 74 Zehnder EASY 5.0 It is usually necessary to modify P and/or I when the setpoints configured (fan, temperature, etc.) deviate significantly from the factory setpoints, and/or when the installation (network volume/length, size/volume of the building, etc.) has an unconventional design, as well as if the machine is under/oversized with an operating point that is far from the nominal operating point.
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Page 75: Control Of The Output Voltage Of The Digital Outputs Do
Zehnder EASY 5.0 The output values of the P and I terms are totalled and converted to a global output value (e.g. fan speed signal). Corrections to be made Actual response of the system Fluctuations around the setpoint Setpoint ↑ time Exceedance Setpoint... -
Page 76: Presentation Of The "Pg 5.0" Touchscreen
Zehnder EASY 5.0 35. Presentation of the “PG 5.0” touchscreen 35.1. Technical specifications LCD TFT (Liquid Cristal Display – Thin-Film Transistor) Display technology Resistive Touchscreen technology Number of colours 4.3’’ Diagonal of the active area 480 pixels x 272 pixels Display resolution Adjustable brightness Adjustable standby mode... -
Page 77: Touchscreen Basic Settings
Zehnder EASY 5.0 35.3. PG 5.0 touchscreen basic settings The basic settings can be accessed by any user, no password is required. Thus, anyone can change: The display language ■ The screen brightness ■ The standby mode timer ■ 35.4. Access level Access to the various functions of the Zehnder Easy 5.0 controller is password-protected, which allows the level of access and operational security of the machine to be managed. -
Page 78: Home Page 2
Zehnder EASY 5.0 OPERATING MODE ACCESS LEVEL TEMPERATURE Guest Night Cooling Constant supply User Start Recycling Supply air law Expert Ventilation off Anti-icing protection Constant return Admin/factory Reduced speed Anti-fire protection Return air law Normal speed THERM. NEED Cooling VENTILATION Exchanger Heating LOBBY... -
Page 79: Home Page 3
Zehnder EASY 5.0 35.5.3. Home page 3 Home page 3 can be accessed by any user from home page 2 (button) and complements the information on home pages 1 and 2 by indicating the current modes and sequences and the presence of a possible external request from either the CTM or the external stop DI input. - Page 80 Zehnder EASY 5.0 Required access Symbol Access to… Details level Firmware version Control programme version General system information Guest Communication errors between display and controller Display status Maintenance counter setting Guest Alarm maintenance / periodic maintenance Alarm presence and acknowledgement Active alarms and alarm history menu Guest Recorded alarms...
- Page 81 Zehnder EASY 5.0 Notes Z-MASTER-V1122-CSY-INM-Zehnder Easy5.0...
- Page 82 Zehnder EASY 5.0 Notes Z-MASTER-V1122-CSY-INM-Zehnder Easy5.0...
- Page 83 Zehnder EASY 5.0 Notes Z-MASTER-V1122-CSY-INM-Zehnder Easy5.0...
- Page 84 Company 1st line of address Town Country email website...
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