GEA Grasso - Page 123

Grasso
Refri
g
eration Division
GRASSO SYSTEM CONTROL
01.2003/0 638660E_chapter6.doc Kap.6 - 11
Display message / Explanation Possible cause of the alarm Alarm clearance
The motor current is too high. Remove cause of high motor current in
the refrigeration plant.
065 Alarm (01)
Motor current
too high
‘Imot hi alarm’ limit is set too low. Change ‘Imot hi alarm’ limit to a
suitable value.
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.This alarm is activated if the motor
current exceeds the ’Imot hi alarm’
limit value.
The sensor is defective. Replace the sensor.
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
066 Alarm (01)
Wire failure
motor current
There is a short circuit in the sensor
wiring.
Check where the short circuit has
occured and rectify.
The sensor is defective. Replace the sensor.The GSC has detected a loose wire
or short circuit in the motor current
sensor.
The analogue input module
defective.
Replace the analogue input module.
The motor speed is too low. Remove cause of low motor speed in
the refrigeration plant.
067 Alarm (01)
Motor speed
too low
‘Nmot low alarm’ limit is set too
high.
Change ‘Nmot low alarm’ limit to a
suitable value.
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.This alarm is activated if the motor
speed falls below the ’Nmot low
alarm’ limit value.
The sensor is defective. Replace the sensor.
The motor speed is too high. Remove cause of high motor speed in
the refrigeration plant.
068 Alarm (01)
Motor speed
too high
‘Nmot hi alarm’ limit is set too low. Change ‘Nmot hi alarm’ limit to a
suitable value.
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.This alarm is activated if the motor
speed exceeds the ’Nmot hi alarm’
limit value.
The sensor is defective. Replace the sensor.
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
069 Alarm (01)
Wire failure
motor speed
There is a short circuit in the sensor
wiring.
Check where the short circuit has
occured and rectify.
The sensor is defective. Replace the sensor.The GSC has detected a loose wire
or short circuit in the motor speed
sensor.
The analogue input module
defective.
Replace the analogue input module.