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Summary of Contents for Carel plug-in
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Page 1: User Manual
User manual LEGGI E CONSERVA QUESTE ISTRUZIONI READ AND SAVE THESE INSTRUCTIONS... - Page 3 The client (builder, developer or installer of the final equipment) assumes every responsibility and risk relating to the configuration of the product in order to reach the expected results in relation to the specific final installation and/or equipment. CAREL in this case, through specific agreements, can intervene as consultant for the positive result of the final start-up machine/application, but in no case can it be held responsible for the positive working of the final equipment/apparatus.
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Page 5: Table Of Contents
CONTENTS INTRODUCTION ……………………………………………………………………………………………………………30 GENERAL CHARACTERISTICS...........................8 Models available....................................8 1.1.1 PJ32S........................................8 1.1.2 PJ32Y - PJ32X ....................................8 1.1.3 PJ32C .......................................8 Characteristics.......................................9 HARDWARE STRUCTURE ............................10 Meaning of the inputs and outputs..............................10 Instrument and accessory codes................................11 2.2.1 Codes for the instruments in individual packaging.........................11 2.2.2 NTC and PTC probes ..................................12 2.2.3 Accessories.....................................12... - Page 6 Installation......................................43 8.3.3 Setting the main operating parameters ............................43 8.3.4 Parameters - description .................................44 8.3.5 Parameters of the plug-in instrument..............................44 8.3.6 HACCP module parameters ................................44 8.3.7 Parameters corresponding to the recording of the HA and HF alarms ...................46 8.3.8 Operating mode and alarm signals ..............................46 8.3.9...
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Page 7: Introduction
A range of models is available, providing the best solution for all applications, at the most competitive price. The plug-in family builds on the experience and success of the previous product ranges, such as the IR32 and IR32E, with the aim of offering an increasingly simple and economical product, without relinquishing on the performance required by the refrigeration manufacturer. -
Page 8: General Characteristics
1. GENERAL CHARACTERISTICS 1.1 Models available The various models are differentiated according to the following functions and performance: operating mode and number of inputs and outputs for versions S, Y, X and C; complete versions (hereafter: Top) with serial connection, fastening from front panel, removable terminals;... -
Page 9: Characteristics
for industrial environments EN50082-2 and EN50082-1. Regarding safety, it conforms to standards EN60730-1 and EN60730-2-9. The CE mark confirms the quality and the safety of the plug-in series, guaranteed by the CAREL ISO 9001 certified design and production system. -
Page 10: Hardware Structure
6 and 7 are for the defrost temperature probe (defrost), when featured probes according to the code, connection is for standard CAREL NTC or PTC probes digital input terminals 6 and 7 are for the digital input from free contact, when featured the group of terminals numbered 1, 2, 3, 4 are for the connection of the relay outputs. -
Page 11: Instrument And Accessory Codes
2.2 Instrument and accessory codes The definition of the instrument codes is based on two categories: one for the simpler and more economical versions (Eco), and one for the versions complete with all functions (Top). The main differences between the two versions are that the following are present only in the Top versions: ... -
Page 12: Ntc And Ptc Probes
2.2.2 NTC and PTC probes All PTC and NTC probes conforming to the CAREL standard can be used, with resistance values of 985 at 25C, for PTC, and of 10 k for NTC. Below are some codes of the more common versions. -
Page 13: User Interface, Meaning Of Operating Indicators And Led Display
2.3 User interface, meaning of operating indicators and LED display Figs. 2.3.1 and 2.3.2 shows the front panel of the plug-in: display and buttons. The front panel of the instrument features a three-digit display (ref. 4 ) and three LEDs for backlighting the buttons (refs. -
Page 14: Installation
3.2.1 Power supply The plug-in instruments are connected to the power supply using terminals 8 and 9 in the Eco versions, or with the two-way removable block to be inserted in the terminals 8 and 9 for the Top versions. -
Page 15: Special Warnings
For the 12Vac versions, if the power supply available: is mains power, a safety transformer is required (CAREL code TRA12VDE01 or TRA12VDE00) to guarantee the double insulation between the power supply and the low voltage electronics inside. If required, the protective fuse placed in series with the primary (32 mAT, for code TRA12VDE00) is indispensable. - Page 16 Serial: serial connection to the supervisor system; TRF: 3VA transformer. * only on last module Fig. 3.4.2.1 WARNING: the diagrams show the serial connection including the RS485 serial interface adapter (see options) which is external to the instrument and must be powered separately. Versions with 115 and 230 Vac power supply are also available for the serial adapter.
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Page 17: Electrical Connections, Pj32
3.2.4 Electrical connections, PJ32 Fig. 3.2.5.1 Warnings: before connecting the power, check the correct value of the power supply as shown on the label of the instrument; all models use NTC probes, except for the PJ32S6E0*, which uses PTC probes;... -
Page 18: Setting The Main Operating Parameters
3.3 Setting the main operating parameters The plug-in series instruments are supplied ready to use. They are in fact programmed in the factory (default settings) to respond to the more common requirements. The programming is performed by assigning all the parameters the more frequently required value;... -
Page 19: Table Summarising The Parameters To Be Checked Before Installation
Based on the factory settings, the main functions are the following: PJ32S: configured as a thermostat, with operation in degrees centigrade, set point at 4ºC and differential of 2ºC. The DEFROST operation is enabled by time at 8 hour cycles lasting 30 minutes (compressor stop only). The high and low temperature alarms are disabled. -
Page 20: Parameters - Description
4. PARAMETERS - DESCRIPTION 4.1 The configuration parameters The parameters can be classified in two groups for setting: frequent parameters (indicated by type F in the following tables); configuration parameters (type C), whose selection is ‘password’ protected to prevent unwanted tampering. -
Page 21: R = Temperature Control Parameters
/4: display control or food storage probe For instruments with two probes (S, Y, C), this parameter selects whether to display the temperature of the control probe (ambient probe) or the second probe, which in this case is used only to display the temperature of the food. The use of the second probe for this purpose means that it can no longer be used to control defrosting;... -
Page 22: C = Compressor Management Parameters
ED For models Y, X, C. With r3=1, the alarm is enabled and indicates end defrost due to the maximum time being reached. Warning: for the model S with defrosting enabled (H1=1), the alarm is not present in that the operation is by time only with compressor off. - Page 23 C2: minimum compressor off time Sets the minimum time, in minutes, that the compressor stays off. The compressor is not re-started until the minimum time selected (c2) has passed since the last shut-down. This parameter is useful in ensuring pressure equalisation after the shut-down, in the case of systems with hermetic and scroll compressors.
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Page 24: D = Defrost Management Parameters
4.7 d = defrost management parameters defrost parameters type min type of defrost (0=heat. element, 1=hot gas, 2=heat elem. by time, 3=hot gas by time) flag interval between defrosts hours end defrost temperature set point +127 °C/°F dP maximum defrost duration... - Page 25 Activates a defrost cycle when the instrument is turned on. The request for defrost when the unit is turned on has priority over the activation of the compressor and the activation of the continuous cycle.
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Page 26: A = Alarm Management Parameters
Overrides the compressor protection times (c1: minimum time between 2 successive starts, c2: minimum off time and c3: minimum on time) at the start of the defrost. The possible values are: 0 = the protection times are respected;... - Page 27 AL: minimum temperature relative alarm Selects the low temperature relative alarm. The value of AL does not indicate the alarm temperature but rather the maximum difference allowed below the set point. For all models: low temperature relative alarm = (set point) - (value of AL) Note that changing the set point automatically changes the low temperature alarm, in that maximum difference allowed remains the same (=AL).
- Page 28 For all models, including S with H1=1: A4 = 2: enable defrost An external contact can be connected to the multifunction input to enable or inhibit the defrost function. When the contact is open, the defrost is inhibited, while it is enabled when the contact is closed. If the contact is closed and there is no request from the controller, obviously the defrost is not performed.
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Page 29: F = Evaporator Fan Management Parameters
A7: external alarm detection delay (multifunction input) Sets the delay (in minutes) for detecting the external alarm when A4=1. Def.: A7=0. Available on all models. 4.9 F = evaporator fan management parameters alarm parameters type min fans subject to the fan controller (0=no, 1=yes) flag fan shut-down temperature (effective temperature °C - °F) - Page 30 Fd: post dripping off (active both when F0=0 and F0=1) The fans, after the defrost, can be stopped for a further period (in minutes) defined by the value of Fd. This is useful to allow the evaporator to return to operating temperature after the defrost, thus avoiding forcing 'hot' air into the refrigerator. In the case of management by fan controller, the time Fd does not need to be selected, in that the controller makes the fans start again when the evaporator reaches operating temperature.
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Page 31: H = Other Settings
Using the programming key, the minus sign - can be cancelled. Def.: H5 = __ (value depending on the model). Available on all models. Always visible at level F. Warning: the values from 0 to 31 are used by CAREL to identify the basic models. t: parameter for expansion modules Displays and modifies the parameters present on the optional RS485 serial modules and HACCP module. -
Page 32: Operating States
5. OPERATING STATES The indication LEDs can have 3 states: off, when the function indicated or the actuator in question is not in operation; on, when the function indicated or the actuator in question is in operation;... -
Page 33: Parameters - Modification
6. PARAMETERS - MODIFICATION The instruments in the PJ32 series are managed by a microprocessor which allows the operation of the control to be adjusted to effective needs. For this purpose, there are special operating parameters. These parameters have been grouped into two families: ... -
Page 34: Modifying The Parameters
6.3 Modifying the parameters After having displayed the first parameter, either type C or type F, proceed as follows: 1. press to reach the parameter which needs to be modified; 2. press to display the associated value; 3. increase or decrease the value using the buttons, until the required value is displayed;... - Page 35 (0= heating element,1= hot gas, flag 2= water or element by time, 3= hot gas by time) interval between two defrosts hours end defrost temperature +127 °C/°F maximum defrost duration or effective duration when d0=2 or 3...
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Page 36: Alarms, Troubleshooting
7. ALARMS, TROUBLESHOOTING 7.1 Anomalous or special operating conditions The instruments in the PJ32 series are able to automatically detect the main malfunctions with the consequent activation of the following actions: the malfunction is signalled on the display with the corresponding alarm code. In particular, the instrument displays the alarm code and the temperature read by the probe, alternating. -
Page 37: Data Error
EE shown during operation or when the unit is turned on error in reading the parameters from the memory. See Data error. Ed flashing The last defrost ended after exceeding the maximum duration rather than reaching the end defrost set temperature: ... -
Page 38: Troubleshooting
7.4 Troubleshooting The following table shows other anomalous operating situations which may arise in the various models. The more frequent causes are indicated and a number of checks are suggested. problem checks CAUSE the compressor does not start... -
Page 39: Available Accessories
8. AVAILABLE ACCESSORIES 8.1 Key for copying the parameters Duplicates the configuration of an instrument (set values of all the parameters and visibility flags), allowing them to be transferred to other instruments, as long as these have the same hardware configuration (same code). -
Page 40: Serial Adapter For Rs485 Network
8.2 Serial adapter for RS485 network 8.2.1 General characteristics The optional RS485 serial module allows the plug-in instruments to be connected to the CAREL supervisory network, providing complete control and monitoring of the operation of the plug-in instruments connected. The system features the possibility of connecting up to 200 units, with a maximum total connection length of 1000 m. Connection to the supervisor requires the standard accessories (PC485KIT00), and a termination resistor of 120... -
Page 41: Installation
Def.: 0; values can range from 0 to 127, the value 0 is reserved (can not be used). (*)Enabling of operation with a local address is performed in the CAREL factory and must be requested at the moment of ordering. - Page 42 Up and Down buttons. The procedure is the following: access the parameters of the expansion module. Select parameter t using the standard operation for the plug-in instrument: 1. press the button for 5 seconds to access the first level parameters;...
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Page 43: Additional Haccp Module
0 disables the detection of alarms HA and HF (as above); if set to a value > 0 means the delay time is equal to Ad + tr (Ad is the alarm delay time parameter of the connected plug-in instrument). -
Page 44: Parameters - Description
8.3.4 Parameters - description The HACCP module uses some parameters from the plug-in instrument and its own parameter for the alarm recognition algorithm, and produces a set of variables for recording the HA and HF events if these occur. It also features parameters for setting the clock and entering up to eight defrost events at programmed times. - Page 45 HA alarm delay This parameter is saved in the HACCP module and is different from the alarm detection delay (parameter Ad) of the plug-in instrument. The HA alarm detection delay is the sum of the two tr + Ad.
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Page 46: Parameters Corresponding To The Recording Of The Ha And Hf Alarms
HA alarm: arises when the control temperature is above the maximum set (SET+AH) for longer than the set delay (Ad + tr). The parameter Ad sets the alarm delay of the plug-in instrument, on exceeding this time an alarm signal (high temperature) is activated, generated by the instrument itself;... -
Page 47: Cancelling The Alarms
1. Alarm signals: the detection of one of the two alarm events, HA or HF, is signalled using the LED display of the plug-in instrument, and by activating any alarm devices available on the instrument: alarm LED, buzzer if featured, alarm relay if featured. -
Page 48: Technical Specifications
3 PTC (C) type of control probe CAREL NTC (10 K at 25C) PTC (985 at 25ºC) type of defrost probe CAREL NTC (10 K at 25C) PTC (985 at 25 ºC) ... -
Page 49: Table Summarising The Characteristics Of The Relays Used
11.95 12.09 12.23 4.08 4.16 4.24 Tab. 9.2.2 For the PJ32 controllers featuring PTC probe input, refer to the table of temperature/resistance values for the CAREL PTC temperature probe. NOMINAL VALUE: 990 at 25 ºC temperature (ºC) () () () -
Page 50: Dimensions
10. DIMENSIONS Fig. 10.1 dimensions (mm) fixed screw terminals removable terminals Tab. 10.1 CAREL reserves the right to modify or change its products without prior notice. Cod. +030221881 rel. 1.5 - 26/10/10... - Page 52 Agency: CAREL INDUTRIES HQs Via dell’Industria, 11 - 35020 Brugine - Padova (Italy) Tel. (+39) 049.9716611 Fax (+39) 049.9716600 http://www.carel.com - e-mail: carel@carel.com...
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