16
NO.
Description
Warning Alarm Trip
Lock
Error
Cause of Problem
2
Live zero error
X
X
Signal on terminal 53 or 60 is less than 50% of
value set in 6-10 Terminal 53 Low Voltage, 6-12
Terminal 53 Low Current and 6-22 Terminal 54
Low Current.
4
Mains phase loss
1)
X
X
X
Missing phase on supply side, or too high
voltage imbalance. Check supply voltage.
7
DC over voltage
1)
X
X
Intermediate circuit voltage exceeds limit.
8
DC under voltage
1)
X
X
Intermediate circuit voltage drops
below “voltage warning low” limit.
9
Inverter overloaded
X
X
More than 100% load for too long.
10
Motor ETR over temperature
X
X
Motor is too hot due to more than 100%
load for too long.
11
Motor thermistor over temperature
X
X
Thermistor or thermistor
connection is disconnected.
12
Torque limit
X
Torque exceeds value set in either par. 4-16 or 4-17.
13
Over current
X
X
X
Inverter peak current limit is exceeded.
14
Earth fault
X
X
X
Discharge from output phases to ground.
16
Short circuit
X
X
Short-circuit in motor or on motor terminals.
17
Control word timeout
X
X
No communication to frequency converter.
25
Brake resistor short-circuited
X
X
Brake resistor is short-circuited,
thus brake function is disconnected.
27
Brake chopper short-circuited
X
X
Brake transistor is short-circuited,
thus brake function is disconnected.
28
Brake check
X
Brake resistor is not connected/working.
29 Power board over temp
X
X
X
Heat-sink cut-out temperature has been reached.
30 Motor phase U missing
X
X
Motor phase U is missing. Check the phase.
TROUBLESHOOTING
Common causes for malfunctioning operation
1.
The external power supply of the control box is not within the range appropriate for the controller
2.
Ensure there is power to the controller box, turn speed dial to Minimum setting (SLOW), Turn the control dial to Run.
If this doesn’t work return the control dial to reset, then return dial to Stop, and finally to Run.
3.
If on start up you notice any unusual sounds coming from the fan or the controller immediately return the control dial to Stop
and contact the Mammoth Support team.
4.
Equipment damage due to the improper use is not covered by the warranty. Mammoth Fans will not be responsible for
personal injuries and equipment damages for failure to comply with the contents of this manual.
Explanation of the error codes on control unit:
