Carel plug-in PJ32C, User Manual

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Cod. +030221881 rel. 1.0 - 11/02/2000 28
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The indication LEDs can have 3 states:
•
RII when the function indicated or the actuator in question is not in operation;
•
RQwhen the function indicated or the actuator in question is in operation;
•
IODVKLQJ, when the operation is blocked by an alarm event, by a delay pending or by a specific status of the multifunction input.
There are however special machine conditions in which the status of the signal LEDs are not immediately recognisable. For
convenience we have shown as follows the states of the LEDs in these operating modes.
VSHFLDOVWDWHV FRPS/(' GHI/('
interval of defrost / normal
operation
↔
off
defrost request / stand-by
↔
flashing
defrost in progress
↔
on
dripping off off
post dripping
↔
Off
compressor request (stand-by)
flashing
↔
continuous cycle (stand-by)
flashing
↔
continuous cycle (running)
flashing in 2 cycles (*)
↔
7DE
The symbol
↔
indicates that the LED can be either on, off or flashing, according to the other parameters and environmental
conditions (temperature, set point, differential, etc.). The general description on the status of the LEDs, provided above, is thus
valid.
The alarm LED is on only during an alarm, and goes off automatically if the alarm is auto-reset or following a reset from the
keypad, if the alarm is no longer present. Also see Tab. 7.1.1.
(*) the continuous cycle signal is shown on the compressor LED by a special sequence: two flashes and a long period with the
LED ON.