Nastec SUND 50, Installation And Use Manual

Page: 20 / 24

20
IGBT TRIP ALARM Yellow ALARM led 5 blinks
The current drawn by the
load exceeds the capacity of
of the inverter or power
module (IGBT) is failed.

Decrease the ramp-up time

Check the voltage drop
along the supply cable to
the motor.

Check motor insulation
NO COMMUNICATION Yellow ALARM led 6 blinks
Communication between
master and slave(s) has
been interrupted.

Check the wiring
connections
MAX. VALUE ALARM Yellow ALARM led 7 blinks
Measured value has
reached the maximum
value accepted by the
system.

Check possible causes of
reaching max value

Check the max alarm value
setting
MIN. VALUE ALARM Yellow ALARM led 8 blinks
Measured value has
reached the lowest value
accepted by the system.

Check possible causes
reaching min value (i.e.
broken pipe, open pressure
relief valve, etc.)

Check the min alarm value
setting.
ADDRESS ERROR Yellow ALARM led 9 blinks
Two units with master
address in the group

Check units address
ALARM CPU Yellow ALARM led 10 blinks Error on CPU

Contact technical service
ACTIVE DIGITAL INPUT
Yellow ALARM led fast
blinking
Digital input activated

Check digital input
connections.