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ALARM
DESCRIPTION
PRESSURE DIFFERENCE
ALARMS
If the compressor is running loaded, and the Main Pressure measurement is
above the Start Pressure parameter, pressure difference alarms are
checked. Otherwise the Pressure Difference Alarm conditions are not
checked.
Pressure difference alarms are listed below:
Sender-2 Pressure Difference Alarm:
If P12 (P1-P2) pressure difference
exceeds the
P1-P2 Pressure Difference Alarm
parameter,
Sender-2
Pressure Difference Alarm
occurs.
Sender-3 Pressure Difference Alarm:
If P13 (P1-P3) pressure difference
exceeds the
P1-P3 Pressure Difference Alarm
parameter, or P23 (P2-
P3) pressure difference exceeds the
P2-P3 Pressure Difference Alarm
parameter,
Sender-3 Pressure Difference Alarm
occurs.
EMERGENCY STOP
If any of the programmable input functions is configured as
“
Emergency
Stop
” and the configured conditions are met,
Emergency Stop
alarm
occurs.
MOTOR OVERLOAD
If any of the programmable input functions is configured as
“
Motor Overload
Alarm
” and the configured conditions are met,
Motor Overload
alarm
occurs.
MAIN CONTACTOR FAIL
TO CLOSE
If any of the programmable input functions is configured as
“Main Relay
Auxiliary Contact Input
”, and if the “closed” signal from the auxiliary contact
is not received within 5 seconds after the main motor contactor closes, this
alarm occurs.
MAIN CONTACTOR FAIL
TO OPEN
If any of the programmable input functions is configured as
“Main Relay
Auxiliary Contact Input
”, and if the “open” signal from the auxiliary contact
is not received within 5 seconds after the main motor contactor opens, this
alarm occurs.
FAN CONTACTOR FAIL
TO CLOSE
If any of the programmable input functions is configured as
“Fan Relay
Auxiliary Contact Input
”, and if the “closed” signal from the auxiliary contact
is not received within 5 seconds after the fan motor contactor closes, this
alarm occurs.
FAN CONTACTOR FAIL
TO OPEN
If any of the programmable input functions is configured as
“Fan Relay
Auxiliary Contact Input
”, and if the “open” signal from the auxiliary contact
is not received within 5 seconds after the fan motor contactor opens, this
alarm occurs.
The alarm name, sampling, and operation are configurable in
digital input alarms.
Only internal alarms are described in this section.
If the Sender Upper Limit parameter of the PT100 sender is set to
0,
the relevant sender’s temperature alarm is disabled.
If the configuration parameter of a temperature or pressure
sender is set to
“inactive”, the relevant alarm is disabled. For the
remaining alarms, if the relevant limit parameters are set to 0, the
alarms are disabled.
