Comprag 11100061, Manual

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4.2 Fault Messages
Faults are abnormal operating condition states. Alarms are fault states that indicate nor- mal
operating conditions have been exceeded but do not present an immediate hazard or
potentially damaging condition. Alarms are intended as a warning only and will not stop the
compressor or prevent the compressor from being started and run.
Start inhibits are fault states that prevent the compressor from initially being starting. Start
inhibit faults are conditions that may present a hazard or damaging situation if the compres-
sor was to be started. A start inhibit will self reset when the condition being monitored returns
to normal operational levels. Start inhibit conditions are only checked during the initial start
procedure and will not stop the compressor once started and in the ‘started’ state. Start in -
hibit conditions are not chec\ked during an automated motor start from Standby.
Run inhibits are fault states that prevent the compressor from starting and running the main
motor. Run inhibit faults are conditions that may present a hazard or damaging situation if
the main motor is run. A run inhibit will self reset when the condition being monitored returns
to normal operational levels and the compressor will then be allowed to exit the standby con-
dition and run without further manual intervention. Run inhibit conditions are checked prior
to a main motor start sequence and will not stop the compressor motor once started. Run
inhibit conditions do not prevent the compressor from entering the
‘started’ state condition.
Shutdown trip errors are fault states that present a hazardous or damaging condition, the
compressor is stopped immediately. The Shutdown trip error condition must be resolved, and
the fault reset, before the compressor can be re-started.
The different fault state conditions are indicated on the screen with specific codes; the last
character indicating the fault type: E = Shutdown Trip Error, A= Alarm, S = Start Inhibit, R =
Run Inhibit. Shutdown trip errors are divided into two different categories: immediate shut-
down errors and controlled stop errors. Immediate sh\utdown errors stop the compressor
instantly (Emergency Stop button activated for example). Controlled stop errors stop the com-
pressor in a controlled way using a normal Stop command; the motor will continue to run
for the set stop run-on-time. Immediate shutdown errors have an error code where the first
character is 0 (zero). Controlled stop faults have a
“1” as the first character. Alarm faults are
also divided into two different categories: alarms and service alarm messages. Alarms start
with
a “2”, service alarm messages with a “4”. Start Inhibit fault codes start with a “3”.
fault type
fault description number
input number
input location number
fault type
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