DOL 38-2 Frequency Converter
Technical User Guide
15
4.3 LED indication on the motor controller/frequency converter
The motor controller/frequency converter is equipped
with a two-color LED for indication of different operating
modes.
LED is located on the underside next to the cable
glands.
• Constantly green when mains voltage is connected.
• Constantly red in case of at least one critical alarm.
• Flashes red in case of at least one non-critical alarm.
4.4 Alarms
The motor controller/frequency converter including relay module provides alarm monitoring which monitors the
optimal and flawless operation and generates an alarm if operating or performance problems are observed.
Alarms are divided into "critical" alarms and "non-critical" alarms.
“Critical" alarms stop the motor controller/frequency converter/motor, LED emits red light and the alarm relay is
activated.
“Non-critical" alarms reduce the performance of the motor controller/frequency converter/motor, and the LED
flashes red.
The built-in alarm monitoring stops the motor controller/frequency converter/motor.
The alarm automatically resets, if the error ceases, and motor controller/frequency converter/motor starts.
Reset the alarm, if the maximum number of restarts (5 x/60 min) is exceeded.
Disconnect the mains voltage for more than 60 sec and the alarm will automatically be reset.
Alarm overview
Error
Alarm priority
Motor controller/frequency
converter/motor
Error
Alarm priority
Supply voltage too high
Critical
Stopped after 5 restart at-
tempts caused by the same
error within 60 minutes
Emits red
light
Enabled
Current consumption of the mo-
tor too high
Phase errors; one or more
phases interrupted (L1, L2, L3)
Obstructed impeller
Wrong direction of rotation
Phase error on the motor supply
(U, V, W)
Internal communication error
Supply voltage too low
Non-critical
Reduced performance
Flashes red
Not activated
Internal temperature of motor
controller too high.
(>95 °C)
Motor current has reached its
limit value
Error in internal EEPROM circuit
Ripple voltage too high
Summary of Contents for 110451
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