plug-in
Cod. +030221881 rel. 1.5 - 26/10/10
9
1.2 Characteristics
Power supply
The plug-in can be powered at: 230Vac or 115Vac using an internal transformer, or at 12Vac/Vdc without internal transformer.
Aesthetics and ergonomics
The LED signals are clearly visible by the backlighting of the three buttons or 3 symbols on the display.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'. For the temperature values, the field of display is
from –50T127 degrees centigrade or Fahrenheit. For the parameters, the field of display can be from -99 to +199, or from -127 to +127.
The 3 status signals represent the activation of an actuator (normally a compressor), the defrost function or an alarm.
Alarm buzzer
The controls with one relay only can be fitted as standard with a buzzer for signalling alarms.
Duty setting and continuous cycle
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.
Multifunction input
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.
Connections
The economical versions (Eco) maintain the traditional fixed terminals, while the complete versions (Top) use removable
terminals. The latter significantly simplify the installation and maintenance of the machine.
Relay outputs
There are, according to the model, up to three relays for the control of compressors, defrost, fan and alarms. When more than
one relay is fitted, the common of all the relays is connected and is available on just one terminal.
Multifunction output
The alarm relay output, when present, can be set using a parameter to be normally activated or normally deactivated.
Keypad and parameter protection
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.
Serial connection
The Top 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.
Display of second probe
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.
Fastening
The fastening method used for the economical models (Eco) uses a rear-panel fastening bracket, while all the other versions (Top)
also feature the possibility of fastening from the front panel, using two screws.
Electromagnetic compatibility
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.
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.
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