Carel PJ32S - Page 9

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Cod. +030221881 rel. 1.0 - 11/02/2000 5
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The plug-in can be powered at: 230Vac or 115Vac using an internal transformer, or at 12Vac/Vdc without internal transformer.
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The LED signals are clearly visible, thanks to the back-lighting of the three buttons. The front panel frame can be customised both
in terms of colour and indications.
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The temperature and the parameter settings are displayed by WZR DQG D KDOI GLJLWV . For the temperature values, the field of
display is from -50 to + 127 degrees centigrade or Fahrenheit. For the parameters, the field of display can be from -99 to +199, or
from -127 to +127.
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The controls with one relay only can be fitted as standard with a buzzer for signalling alarms.
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Functions are:
• the activation of the compressor with programmable timers in the event of control probe fault.
• continuous cycle, which forces the activation of the compressor for the programmable time.
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The digital input, when present, can be used to enable/disable/end the defrost, and to manage serious alarms which require the
immediate (e.g. high pressure) or delayed (e.g. low pressure) shut-down of the unit.
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The economical versions ( (FR ) maintain the traditional fixed terminals, while the complete versions ( 7RS ) use removable
terminals. The latter significantly simplify the installation and maintenance of the machine.
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There are, according to the model, up to three relays for the control of FRPSUHVVRUV , GHIURVW , IDQ and DODUPV . When more than one
relay is fitted, the common of all the relays is connected and is available on just one terminal.
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The alarm relay output, when present, can be set using a parameter to be normally activated or normally deactivated.
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The keypad can be disabled to avoid tampering by unauthorised persons. For each parameter, furthermore, the level of possible
modification, with or without PASSWORD, can be set.
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The 7RS versions feature serial connection, with the following external options:
• parameter copy key: allows the parameters to be duplicated and configured;
• HACCP module, used to record temperatures and alarms;
• RS485 serial adapter module, for connection to a supervisor.
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In the models with two probes, the measurement of the second probe can be displayed instead of the first (control probe). This
function can be used to display the product storage temperature; the defrost mode, in this case, is only by time.
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The fastening method used for the economical models ( (FR ) uses a rear-panel fastening bracket, while all the other versions ( 7RS )
also feature the possibility of fastening IURPWKHIURQWSDQHO , using two screws.
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The plug-in series conforms to EU standards on electromagnetic compatibility:
• for appliances for domestic use EN55014-2 and EN55014-1;
• for residential, commercial and light industrial environments EN50082-1 and EN50081-1
• for industrial environments EN50082-2 and EN50082-1.
• Regarding safety, it conforms to standards EN60730-1 and EN60730-2-9. 
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 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.