Revision 1 – 04.12.2015 21/28
ALARMS
ALARMS WITH IMMEDIATE COMPRESSOR SHUT-OFF
Emergency stop button open (IN1)
One or more phase missed for over 300 m.s.
IN7 open (set as come door micro-switch)
Input relay fault drive open/closed (alarm managed with input enabled only
(C21=1/2))
Working pressure over set WP2
Air end temperature probe failure
Air end temperature over set WT1
Air end temperature lower than set WT5
Delta P (internal pressure – working pressure) over shut off set AP1 once the
timer C19.1 is over and air end temperature is over 45°C (alarm managed
when the aux pressure transducer is enabled into differential operation
(C19=2))
In case of power off and compressor set as manual restart
Safety pressure switch open (missing power to all digital inputs)
Parameter C12 = 3 (generic alarm)
Separator filter differential pressure switch open (IN6)
ALARMS WITH COMPRESSOR SHUT-OFF AFTER 30 SECONDS UNLOAD RUNNING
Working pressure transducer failure
Aux. Pressure transducer failure
Power supply to the controller lower than 9,5Vac and reset accepted when the
power goes over 10,6Vac.
It is not visualized in case it has been disabled in menu 4 Compressor SETUP
Timer CAF elapsed: this alarm is detected if the parameter Safety is set YES
Air end temperature over set WT2.
Reset once temperature is lower than WT2-5°C
Timer C—h elapsed: reset the related maintenance timer
In case compressor start/stop is operated via RS232 and the watchdog
function is enabled (see MODBUS protocol communication)
In case of inverter via RS485, shut off alarm detected (managed by inverter
connected via RS485 only (DR0>0))
No communication to inverter in case of connection via RS485 (managed by
inverter vua RS485 only (DR0>0))
NOTE:
Every time a shut-off alarm is detected, both relay set as alarm led DL1 are activated; the alarm message is stored into the
alarm list; once the cause of the alarm has been erased, push the button R to reset the message and start the compressor.
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