plug-in electronic digital thermostat for heating or cooling applications Installation manual
We wish to save you time and money! We can assure you that the thorough reading of this manual will guarantee correct installation and safe use of the product described. IMPORTANT WARNINGS BEFORE INSTALLING OR OPERATING ON THE APPLIANCE, CAREFULLY READ THE INSTRUCTIONS IN THIS MANUAL.
CONTENTS INTRODUCTION ............................................................................................................................................................. 7 1. 1.1 1.2 2. 2.1 2.2 2.3 3. 3.1 3.2 4. 4.1 4.2 4.3 4.4 4.5 5. 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 6. 6.1 6.2 6.3 6.4 7. 7.1 8. 8.1 8.2 9. General characteristics...........................................................................................................................................
plug-in INTRODUCTION The new plug-in family for heating or cooling is made up of a new series of microprocessor electronic controllers with LED display, designed for the management of one or more control steps, from -50 °C to 150 °C. A range of models is available, providing the best solution for all applications, at the most competitive price.
plug-in 1. General characteristics 1.
plug-in 1.2 Characteristics Power supply The plug-in can be powered in accordance with the models at: 230 Vac or 115 Vac (using an internal transformer), or at 12 Vac/Vdc. Aesthetics and ergonomics The LED signals are clearly visible, thanks to the backlighting of the three buttons. The front panel frame can be customised both in terms of colour and indications. LED display The temperature and the parameter settings are displayed by 'two and a half digits'.
plug-in 2. Hardware architecture The PJ32V/W/Z series instruments are temperature controllers that can be used for the control of refrigeration, air-conditioning and heating units. 3 OUT 1 5 OUT 2 Alim. 230 Vac Power Supply 230 Vac ALARM 4 1-2-3-4 5-6-7 8-9 1 230/12 An application diagram is shown in the figure; this also indicates the possible accessories and expansions, as well as the connections for the inputs and outputs: 1. instrument; 2. plug-in frame; 3. temperature probes; 4.
plug-in 2.2.
plug-in 2.3 User interface, meaning of operating indicators and LED display Fig. 2.3.1 shows the front panel of the controller, on which there are three keys backlighted by as many LEDs (ref. cde ) and the two and a half digits display and sign (ref. f).
plug-in 3. Installation The installation operations for the plug-in controls can be grouped as follows: 1. mechanical installation; 2. electrical connections: probes, power supply and actuators; 3. setting of the operating parameters (see chapter "Parameters − Modification"). 3.1 Mechanical installation 1. Insert the instrument in the previously created hole as per the drilling template, 71x29 mm; 2.
plug-in 3.2.2 Special warnings For the direct connection of the instruments and the layout and checking of the wiring, the following warnings must be carefully read and the diagrams adhered to; errors in connection can cause danger to the safety of the user and damage the instruments and connected components. Also remember that the units must be fitted with all the electromechanical safety devices required to ensure correct operation and the complete safety of the user and of the controlled unit.
plug-in 3.2.
plug-in 4. 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: • frequent parameters (hereafter indicated as type F); • configuration parameters (type C), whose selection is protected by a code, called the password, to prevent unwanted tampering.
plug-in 4.2 Accessing the parameters To access the type F parameters: 1. 2. button for more than 5 seconds (see (*) on previous page); press the the display shows the code of the first modifiable parameter (PS); 3. use the and/or buttons to scroll all the type F parameters. To access the type C parameters: 1. access the type F parameters, select parameter PS (password) using the 2. the display shows 00; button; 3. press the 4. 5.
plug-in 5. PARAMETERS – DESCRIPTION 5.1 Parameters - summary table /2 /4 /5 /6 /C probe parameters measurement stability select probe displayed (0 = S1, 1 = S2) display in °C/°F (0=°C, 1=°F) probe S2 reading room probe calibration x10 (tenths of a degree) type min. C 1 F 0 C 0 F F -127 Max. 15 1 1 +127 unit of m. def 6 0 0 °C/°F °C/°F 0.0 P1 P2 regulator parameters regulator 1 differential (0=0.5 °C) regulator 2 differential (0=0.5 °C) type min. F 0 F 0 max. +19 +19 unit of m.
plug-in 5.2 Classification of the parameters The parameters, as well as being divided by type, are also grouped in logical categories identified by the fist letters of the parameters themselves. Following is a list of the existing categories, with the meaning and identifying letters.
plug-in 5.5 P1 P2 P = temperature differential parameters controller parameters regulator 1 differential (0=0.5°C) regulator 2 differential (0=0.5°C) type F F min. 0 0 max. +19 +19 uom °C/°F °C/°F def 3 3 Table. 5.5.1 P1: regulator 1 differential Sets the value of the temperature differential (hysteresis) used in the control associated with set point 1. It is set in °C or °F.
plug-in r3: minimum set point allowed Determines the minimum value which can be set for the set point. This parameter prevents the user from setting the set point lower than the value indicated by r3. Def.: -50 r4: maximum set point allowed Determines the maximum value which can be set for the set point. This parameter prevents the user from setting the set point higher than the value indicated by r4. Def.
plug-in c1: minimum on time for the regulation outputs Sets the minimum activation time for the regulation outputs. During normal operation, the load is not stopped unless it has been on for at least the minimum time set using c1. This parameter is useful for example for minimising wear on the actuator. Def.: c1=0 (no minimum on time is set). Available on all models. ON comando Signal OFF t ON uscita output OFF t C1 Tempo minimo di ON / Min. ON time-interval Fig. 5.7.
plug-in 5.8 A0 AL AH At Ad A = alarm management parameters alarm parameters alarm differential (0= 0.5 °C) low temperature alarm threshold high temperature alarm threshold temperature alarm delay external alarm detection delay type C F F C C min. 0 -50 AL 0 0 max. unit of m. def +19 °C/°F 2 AH °C/°F -50 +150 °C/°F 150 199 min 0 15 min 0 Table. 5.8.1 A0: alarm differential This represents the differential used to activate the high and low temperature alarms (AL and AH, see figure below).
plug-in 5.9 dI d = digital input parameters parameters digital input digital input operating mode type min. max. C 0 3 uom def 0 Table. 5.9.
plug-in 5.10 H0 H1 H2 H3 H4 H5 T H = other settings other parameters reserved alarm signal output mode (0= off when alarm active) out2 output mode (0= alarm, 1= regulation) disable keypad (0= disabled) disable buzzer (1= disabled) identification code reserved type min. C 0 C 0 C 0 C 0 C 0 F -99 F -127 max. 199 1 1 1 1 99 127 uom def 1 0 0 1 0 10 Table. 5.10.1 H0: reserved parameter The parameter H0 is reserved. Never modify the value. Def.: H0= 1. Available on all models.
plug-in 6. Alarms and troubleshooting 6.1 Abnormal or special operation 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.
plug-in HI flashing high temperature alarm. A probe has measured that the temperature is higher than the value set for parameter AH for a time higher than what indicated by the parameter At. • check parameters AH, A0 and At. The alarm is reset automatically when the temperature returns within the set limits (see parameter AH). The regulation outputs are not influenced by this alarm. EE displayed during operation or at power on error reading the parameters from the data memory.
plug-in 6.4 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.
plug-in 7. Accessories supplied 7.1 Parameter copy key Used to copy the configuration of an instrument (values set for all the parameters). The "key" features a power button, a two-colour signal LED (red/green) and a connector for connection to the serial interface on the instrument, as shown in the figure below. It is supplied by a 12Vdc alkaline battery, Philips VR32, Duracell MN21 or equivalent. 1. When using the key, the instrument must not be powered, as the power is supplied by the key itself.
plug-in 8.
plug-in 8.1 Characteristics of the relays used max. current 16A resistive electrical specifications of the relays used in the various models maximum peak current maximum switchable resistive current maximum switchable output (250 Vac) maximum inductive load at 250 Vac maximum switchable voltage definition as per VDE0435 definition as per VDE0461 UL definition (*) (UL approval of the instrument) definition of the instrument as per EN60730-1 max. current 8A resistive max.
plug-in 9. Dimensions Fig. 9.1 dimensions (mm) A B C D fixed screw terminals 81 36 68 65 CAREL reserves the right to modify or change its products without prior notice. Cod. +030220291 – rel. 1.3 dated 28/03/06 32 removable terminals 81 36 78 65 Table. 9.
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CAREL S.p.A. 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 Rel. 1.
