19
6. Protections and alarms
ALARM MESSAGE
LED NOTIFICATION
ALARM DESCRIPTION
POSSIBILE SOLUTIONS
UNDER VOLTAGE
Red STAND-BY led blinking
Supply voltage too low
Check possible causes of
undervoltage.
OVER VOLTAGE
Red STAND-BY led and
yellow ALARM led blinking
Supply voltage too high
Check possible causes of
overvoltage.
DRY RUN COSPHI
Yellow ALARM led 1 blink
Motor cosphi is lower than
the set dry running cosphi.
Check if the pump is
primed.
Check the set dry running
cosphi. Dry running cosphi
is approximately 60% of
the rated cosphi (at rated
frequency) listed on the
motor plate.
If pump’s cosphi is lower than
the set dry-running cosphi for
at least 2 seconds, the inverter
stops the pump. The inverter
tries to run the pump every 10,
20, 40, 80, 160 minutes and
then the pump is stopped.
WARNING: if dry running
protection occurs, the inverter
will try to start the pump
automatically. Be sure to cut
power supply before
performing any maintenance.
OVERCURRENT MOT.
Yellow ALARM led 2 blinks
Motor overload: motor
current is higher than the
rated motor current setting
parameter.
Make sure that the motor
current setting parameter is at
least 5% higher than rated.
Check other possible causes of
over current.
SENSOR FAULT
Yellow ALARM led 3 blinks
Sensor error
Check the transducer
Check the wiring of
transducer
OVER TEMP. INV.
Yellow ALARM led 4 blinks
Inverter over temperature
Make sure that ambient
temperature is less than 40
°C (104 °F).
Check if cooling fan is
working properly and if
mounting space is
adequate for proper
cooling.
Summary of Contents for SUND Series
Page 1: ...Installation and use manual SUND manSUND_eng_00...
Page 22: ...22 NOTES...
Page 23: ...23...