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Table of Contents
Related Manuals for Carel IR32M
Summary of Contents for Carel IR32M
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Page 1: Table Of Contents
CONTENTS General features Models available Main features of the Infrared Series Front panel and buttons LED display - Indicators Keypad Installation Standard configuration Cautions Selection of the main working parameters - Other important parameters List of the working parameters to be checked before starting the unit How to modify the working parameters Gaining access - How to modify the parameters How to exit the procedure - How to exit the procedure without memorizing the modified data... -
Page 2: General Features
These new instruments are microprocessor based and come complete with a LED display. Carel offers a wide range of models to ensure that the exact instrument is available for your application at the most competitive price. In brief, here is a list of the main models available:... -
Page 3: Main Features Of The Infrared Series
Main features of the Infrared series Power supply All the instruments of the Infrared series − except IR32P − come complete with WIDE RANGE power supply, allowing you to power your units with either direct or alternating current, from 12 to 24Volt. The 'S' model is also available with a UNIVERSAL or a HIGH range power supply that allow to extend the power supply range: from 24 to 240V or from 110 to 240V respectively. - Page 4 NTC sensor The Infrared instruments have been designed to be connected to Carel NTC sensors since they give greater precision than different sensor models. However, special versions capable of receiving the most common types of PTC sensors are available upon request.
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Page 5: Front Panel And Buttons
• serial card for connection to a supervisory and/or telemaintenance system such as Carel MasterPlant for the control and regulation of refrigeration units. Note: you are requested to indicate the optional functions you need when placing the order. Only the serial card can be fitted after the controller has been installed. -
Page 6: Keypad
Keypad The buttons on the front panel of the instrument allow you to perform the following functions: • - goes to the next parameter; - increases the value of the parameter; if pressed simultaneously to the button no. 10 (*): - activates/deactivates the continuous cycle;... -
Page 7: Installation
IR32M: specifically programmed for the detection of two different temperature values. Connect a switch to the digital input to switch from the first to the second sensor. IR32M can be connected to either NTC or PTC sensors, as specified when placing the order. -
Page 8: Cautions
If it should be necessary to connect to a transformer which has a secondary earth, an insulating transformer must be interposed. If necessary, Carel has available an insulating transformer with the following characteristics: 24Vac to 24Vac, 20VA, reference no. 0907651AXX. -
Page 9: Selection Of The Main Working Parameters - Other Important Parameters
Selection of the main working parameters Setting the main working parameters - Ambient set-point The factory set-point is 0ºC. Should you need a different value, more suitable to your specific application requirements, observe the following instructions: • press for 1 second: the set-point value will appear on the display; •... -
Page 10: List Of The Working Parameters To Be Checked Before Starting The Unit
Models IR32S, IRDRS, IRDRSE and IR32Y Configuration of the 'type' of instrument The INFRARED series comprises two models - IR32S and IR32Y - with different operating modes. Both models feature the H1 parameter (see below) allowing you to select one of the two operating modes. IR32S, IRDRS and IRDRSE can operate either as a simple thermostat (H1=0, default value) or as a thermostat and defrost controller for static units operaring at normal temperatures (the defrost cycle starts when the compressor stops, H1=1). -
Page 11: How To Modify The Working Parameters
('C'), protected by a code or password to prevent unauthorised access to the data. All parameters can be modified via keypad (except IR32M, with no keys) as well as via remote control unit or serial line. In order to modify the parameters via front panel keypad, observe the following instructions:... -
Page 12: Reset Procedure
This is the reason why Carel have implemented the RESET function in all the controllers of the INFRARED series, thus providing safer and more reliable instruments, always capable of restoring their normal functions without any problem. -
Page 13: Remote Control Unit
Until now programming multi-function instruments dedicated to refrigeration was a very complex procedure. This is why Carel have enhanced the IR32 series with the remote control unit, used not only to program the controller from a remote position but also to allow the End-User to set the main working parameters easily and fast. -
Page 14: Buttons Used To Modify The Main Parameters (Directly Accessible Buttons)
Buttons used to modify the main parameters (directly accessible buttons) The most frequently used parameters are indicated on the remote control unit. They are grouped in three light-grey zones: • temperature parameters; • defrost parameters; • continuous cycle parameters. For the correct use of the buttons see 'How to use the remote control unit' below. -
Page 15: Access With Code
°C evap. displays the temperature value measured by the defrost end sensor (if present) or the value measured by the second sensor (IR32M model). Important: this function is always active. Consequently the temperature measured by the second sensor will be always displayed without having to press the 'START' button or select the access code (see point 5 below). -
Page 16: Further Information
In the following paragraphs all the parameters will be described, indicating in which versions they are available and what values can be assigned to them. (Remember that on version IR32M the parameters are modifiable only through the remote controller and the serial input). -
Page 17: Parameters For The Management Of The Temperature Sensors
Short descriptive note about sensors with thermistors types NTC and PTC: Equipment of the IR32 series is designed to work with NTC Carel temperature sensors, or sensors using thermistors with a negative characteristic (NTC stands for Negative Temperature Coefficient). This type of thermistor modifies an electrical parameter (its own resistance) in inverse proportion to any change in temperature;... - Page 18 In equipment with two sensors (IR32M, IR32Y, IR32C, IDRDC and IR32P), this parameter allows a choice as to whether temperature is regulated by reference to one sensor alone (P1 on the IR32M) or by reference to a weighted average of the two sensors. This parameter is useful in special applications. For example, it is possible to place the ambient sensor in the suction and the defrost sensor in series.
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Page 19: R = Parameters For The Temperature Regulation
r = parameters for the temperature regulation REGULATION PARAMETERS Type Min. Max. U.m. Def. Regulation delta (differential) +19.9 °C/°F Set minimum allowed °C/°F Set maximum allowed +199 °C/°F Direct/reverse operation (Dir r3=0, rev r3=1;IR32S only) flag Note: for the set times to become operative, the instrument must be switched off and on again. rd: Regulation delta Sets the value of the differential, or hysteresis, used in regulating the temperature. -
Page 20: C = Parameters For The Compressor Management
c = parameters for the compressor management COMPRESSOR PARAMETERS Type Min. Max. U.m. Def. Delay in compressor insertion after switching on equipment mins Minimum time between two successive insertions of mins compressor Minimum compressor down time mins Minimum compressor operating time mins Duty setting (compressor safety: 0=OFF, 1=ON) mins... - Page 21 c3: Minimum compressor operating time: this sets the shortest period for which the compressor may operate. The compressor will not be switched off if it has not been active for a time equivalent to the minimum selected. Default: C3=0 (No minimum operating period has been set).
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Page 22: D = Parameters For The Defrost Management
d = Parameters for the defrost management DEFROSTING PARAMETERS Type Unit Type of defrosting (0=resistance, 1= hot gas) flag Interval between defrosts End of defrost temp setpoint +199 °C/°F Max duration of defrost Defrost at power ON (0=no, 1=yes) flag Defrost delay from power ON or start of Multifunction Interrupt display during defrost flag... - Page 23 d4: Defrosting at power ON It activates a defrost as the power supply is switched on. A request to defrost on start-up has priority over insertion of the compressor and over activation of a continuous cycle. Possible values are: 0 = no, defrosting on start-up of equipment; 1 = yes, defrost is effected on start-up.
- Page 24 On the other hand, the parameter dC=1 can be very useful when it is wished to use the IR32Y version for controlling air dehumidifiers. The defrosting cycle then becomes the condensate discharge cycle, which needs to be initiated at short intervals (minutes) and for very brief periods (seconds). Contact your Carel agent for further information.
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Page 25: A = Parameters For The Alarm Control
+199 °C/°F Temperature alarm delay Multifunction input configuration IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C, IRDRC, IR32M (should be kept at zero) Duty setting in case of external alarm (0=OFF, 1=ON) External alarm delay (A4=2 multi-function input) Note: for the set times to become operative, the instrument must be switched off and on again. - Page 26 A4=0: INPUT NOT ACTIVE: MULTIFUNCTION digital input is not used. This is the value set in the factory for all versions except model IR32M. A4=1 IMMEDIATE EXTERNAL ALARM: it is possible to connect to the digital input an external alarm which will request immediate intervention (for example a high pressure or compressor temperature alarm).
- Page 27 Version IR32S with H1=0 (thermostat function): A4=3: DIRECT/REVERSE OPERATION The digital input is used to choose the DIRECT function (for refrigeration) or the REVERSE function (for heating - see also parameter r3). When the contact is open the equipment works in DIRECT mode, when the contact is closed, in REVERSE.
- Page 28 A4=5: DOOR SWITCH By setting A4 = 5 it is possible to control the switch at the store-room door. When the switch is opened the compressor is switched off. If the IR32C or IR32P versions with S90OEM4PWR are being used, the control automatically also cuts off the evaporator fan (often positioned above the door), and, if the parameter H1=0 referring to the room light automatically goes on via output AUX.
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Page 29: F = Parameters For Controlling Evaporator Fans
F = parameters for controlling evaporator fans FAN PARAMETERS Type Min Unit Fan control LED by fan controller (0=no, 1=yes) flag Fan cut-out temperature (relative to ambient temperature) °C/°F STOP fans when compressor idle (0=no, 1=yes) flag Stop fans during defrost (0=no, 1=yes) flag Stop after dripping Note: for the set times to become operative, the instrument must be switched off and on again. -
Page 30: Summary Diagram Of The Evaporator Fan Operation
F3: Stop fans during defrosting (parameter operative only when F0=0) Allows a choice to be made as to whether the fans should operate during defrosting. Inactive if the fans are managed by the fan controller. F3=0 (no): fans working during defrosting; F3=1 (yes): fans do not work during defrosting. - Page 31 H = other settings OTHER SETTINGS Type Unit Serial address Particular configurations: IR32S, IRDRSE/S0 and IR32Y flag IR32C, IRDRC and IR32P Possibility of changing parameter set from keypad (0=no, 1=yes) flag Remote commander readiness code Note: for the set times to become operative, the instrument must be switched off and on again. H0: Serial address It allows equipment to be provided with an address to which it will respond when connected to a control or remote assistance system.
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Page 32: Notes For The New Release
°C/°F These functions are now available on the IR32M model which – in addition to the insertion of the Ad delay– allows – on the version with the infrared receiver – the modification of the high and low temperature alarms by IR remote controller. - Page 33 F0=2, the fans are ON if evaporator temperature<(Setpoint + F1- A0); the fans are OFF if evaporator temperature>(Setpoint + F1) Management of the new algorithm ‘switch door’. For all the models excepted IR32M When the door is open: the light is open (only IR32C and IRDRC models with an AUX output programmed to control the management of light);...
- Page 34 ‘Smart’ remote On/Off. For all the models The digital input can be programmed also as remote On/Off. When the controller is OFF: the temperature is displayed; the compressor anti-cycling protection (min. time between 2 switch on) is active; the AUX output remains operative; the measure displayed is visualized alternatively with two horizontal lines.
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Page 35: Wiring Diagrams
WIRING DIAGRAMS Wiring diagram for multiple units: MAIN IR32 IR32 IR32 IR32 MAIN = mains power supply TRF = transformer INS TRF = insulating transformer =earth SER = multiple connection to the control system. IR32 panel mounting connections: Cod. +030220151 - Rel. 2.1 - 04/09/98... - Page 36 Cod. +030220151 - Rel. 2.1 - 04/09/98...
- Page 37 Cod. +030220151 - Rel. 2.1 - 04/09/98...
- Page 38 Cod. +030220151 - Rel. 2.1 - 04/09/98...
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Page 39: Operating States Of The Equipment
IRDRC and IR32P again operating only) are shutdown temperature in order to help drainage of water after defrosting. (*) The thermometer version IR32M is obviously excepted. The sequence progresses from left to right. Cod. +030220151 - Rel. 2.1 - 04/09/98... -
Page 40: Alarms And Troubleshooting
ALARMS AND TROUBLESHOOTING Defective or incorrect operation Equipment in the Infrared range are able to signal most incorrect operation automatically. When any malfunction occurs the microprocessor initiates the following actions: • the malfunction is signalled on the display with an appropriate alarm signal. More specifically, the display shows alternatively the alarm code and the temperature read by the sensor. - Page 41 Note: The following pages list some other incorrect operating situations, model by model. The most likely causes and corrective action are indicated. The CAREL organisation remains at your service with suggestions and information. What to do if the remote commander does not work: •...
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Page 42: What To Do If The Ir32S, Irdrse/S0 Fails To Work
What to do if the IR32S, IRDRSE/S0 fails to work PROBLEMS CAUSE CHECK compressor will not start : if H1=0 parameter r3 • power on wrong mode: heating instead of if A4=3, check state of digital input • compressor LED off cooling or vice versa compressor will not start : compressor delay operating... - Page 43 PROBLEMS CAUSE CHECK • compressor will not start : compressor delay in operation if parameters c0, c1, c2 and dd • power on A4=3 • • compressor LED flashing post-defrost dripping in progress temperature is outside set limits but alarm delay operating check Ad no alarm signalled and buzzer, if fitted, does not sound...
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Page 44: What To Do If The Ir32P Or Ir32C, Irdrc Fails To Work
What to do if the IR32P or IR32C, IRDRC fails to work PROBLEMS CAUSE CHECK • compressor will not start : compressor delay in operating parameters c0, c1, c2 and dd • • power on post-defrost dripping in • compressor LED flashing progress temperature is outside set limits but no alarm delay operating... -
Page 45: Technical Characteristics
Type of sensor used for control: • • • • • • • • NTC Carel (10 KΩ a 25°C): standard ON • • • • • PTC 985 Ohms a 25 º C, upon request: Type of sensor used for defrosting: •... - Page 46 Models IR32M IR32S IRDRS0 IRDRSE IR32Y IR32P IR32C IRDRC Programming • • • • • • Keypad • • • • • Remote commander (optional) Mechanical characteristics Dimensions: • • 33 x 75 x 72: • • • 33 x 75 x 64: •...
- Page 47 SUMMARY OF ALL THE PARAMETERS SENSOR PARAMETERS Type Unit Type of sensor (0=NTC,1=PTC) Calibration °C/°F Measurement stability Sensor reading speed Virtual sensor °C /°F (0=°C, 1=°F) flag Decimal point (0=yes, 1=no) flag CONTROL PARAMETERS Type Unit Control differential 19.9 °C/°F Minimum set allowed °C/°F Maximum set allowed...
- Page 48 °C/°F High temperature alarm (deviation from set point) °C/°F Temperature alarm delay Multi-function input configuration IR32S, Y and C, IR32M Multi-function input configuration: IRDRS, SE, IRDRC For Rail Din mounting: must be kept 0 Duty setting for external alarm(0=OFF, 100=ON)
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Page 49: Temperature/Resistance Ratios For Ntc Thermistors
Rmax is the maximum value. For the sake of simplicity, the values relative to only a limited number of temperatures are given. Intermediate values can be adequately determined by interpolation. Temperature/Resistance ratios for the Carel NTC temperature sensor Temperature Rmin... - Page 50 NOTES FOR CONTROLS WITH SERIAL NUMBERS BELOW 5,000 If the unit has a serial number lower than 5000 (see serial number on the label placed on the back of the unit), the factory settings of two parameters will differ from other units: ALARM PARAMETERS Type Unit...
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Page 51: Ir32 Dimensions
IR32 DIMENSIONS IR32 IR32M, IR32S, IR32Y IR32P IR32C IRDR and S90RDPW2 S90OEM4PWR Cod. +030220151 - Rel. 2.1 - 04/09/98... -
Page 52: Code Numbers For Ordering Controls And Accessories
-50÷100°C PTC, bulb 6x180, 6m IP67 PTC060WA00 -50÷100°C PANEL MOUNTING THERMOMETER Thermometer IR32M: 2½ digits, NTC, 12-24Vac/dc IR32M0L000 Panel mounting thermostats with defrost timer IR32S: 2½digits, 12-24Vac/dc IR32S0L000 IR32S: 2½digits, 12-24Vac/dc, for remote control, with buzzer IR32S0LBR0 IR32S: 2½digits, 24-240Vac/dc IR32S0U000 IR32S: 2½digits, 24-240Vac/dc, for remote control, with buzzer... - Page 53 DIN RAIL MOUNTING THERMOSTATS Din Rail mounting thermostats with defrost timer IRDRSE: 2½digits, 230Vac,no buzzer, no option for serial interface, 2 digital IRDRSE0000 inputs, for remote control IRDRS0: 2½digits, 24-240Vac, buzzer, optional serial interface, 2 digital inputs, IRDRS00000 for remote control Din Rail mounting thermostats and defrost controls for ventilated unit at low temperature IRDRC0: 2½digits, 12-24Vac/dc, buzzer, optional serial interface, 2 digital inputs, IRDRC00000...
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Page 54: Ir96: Microprocessor-Based Freezer Controller
IR96: MICROPROCESSOR BASED FREEZER CONTROLLER FOR MEDIUM OR LOW TEMPERATURE RANGE FORCED AIR UNITS Ir96 is a microprocessor based controller designed for the management of freezer with gravity or forced-air evaporators. It has 5 relay outputs available to control all the main actuators: compressor (directly up to 1Hp single-phase), evaporator fans and defrosting. - Page 55 New algo for door-switch management When the door is open • the light switches ON • the compressor & the evaporator fan switch OFF • the temperature alarms are disabled After a selectable time has elapsed, the control returns to its normal functioning. The new algo overrides any problems due to a switch- door malfunctioning.
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Page 56: Technical Features - - Connections
Inputs refrigerating room sensor, defrosting sensor, multi-function inputs Type of sensor: NTC CAREL 10KΩ a 25ºC (for codes see Carel price-list) Relay outputs (all) Disconnection of type 1B according to ECC EN 60730-1 Compressor SPST relay, max.switching capacity: 20A/250V Defrosting SPDT relay, max.switching capacity: 8A/250V... -
Page 57: Ir96: Keys Functioning
IR96: BUTTONS FUNCTIONING LIGHTS BUTTON: • activates/deactivates the unit lights (or any other aux. output connected to the 4th relay) • increases the value of data on display during selection of set-point and parameters MANUAL DEFROST BUTTON: • decreases the value of data on display during selection of set-point and parameters •... - Page 58 During normal functioning the display shows the value read by the ambient sensor. In case of alarm the temperature values will flash alternately to the alarm code. When the controller is deactivated (OFF status) the 'OFF' led flashes while the display shows the temperature read by the sensor. SET-POINT: press for one second the button to visualise the set-point value;...
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Page 59: Ir96: Parameters
IR96: PARAMETERS The parameters have been organised on two levels: FIRST LEVEL: frequent parameters. They are indicated with F in the table and the password is not necessary to gain access to them. To modify them operate as follows: press the button for more than 5 seconds (in case of alarm, first silence the buzzer);... -
Page 60: List Of Parameters
LIST OF PARAMETERS Parameter Kind Min U.M. PASSWORD +199 SENSOR PARAMETERS Type of sensor (must be 0)[Accessible only after RESET] Ambient sensor calibration °C/°F Measurement stability Sensor reading speed Sensors average (see installation manual) °C /°F (0=°C, 1=°F) flag Enabling of decimal point (0=yes, 1=no) flag CONTROL PARAMETERS Control differential (hysteresis) - Page 61 ALARM PARAMETERS Alarm and fan differential °C/°F Low temperature alarm (indicates the max. allowed deviation from +199 °C/°F the set- point). If = 0 disables the low temperature alarm High temperature alarm (indicates the max. allowed deviation from +199 °C/°F the set-point).
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Page 62: Description Of Particular Parameters And Performances
DESCRIPTION OF PARTICULAR PARAMETERS AND PERFORMANCES Memorisation of Minimum/Maximum Temperature: IR96 allows to record the minimum and the maximum temperature read by the 'ambient' sensor during an interval which can reach up to 199 hours (more than 8 days). To activate this function, operate as follow: select parameter 'r5'=1. -
Page 63: Ir96: Alarms
This is not an alarm signal, but it indicates that the instrument is carrying out a defrost. Appears only if parameter d6=0. DIMENSIONS Carel reserves the right to alter the features of its products without prior notice. Cod. +030220151 - Rel. 2.1 - 04/09/98...