8.4 List of Warnings and Alarms
An (X) marked in
indicates that the warning or alarm has occurred.
No.
Description
Warning
Alarm
Trip lock
Cause
2
Live zero error
X
X
–
Signal on terminal 53 or 54 is less than 50% of value set
in
parameter 6-10 Terminal 53 Low Voltage
,
parameter 6-20 Terminal 54 Low Voltage
and
parameter 6-22 Terminal 54 Low Current
.
3
No motor
X
–
–
No motor has been connected to the output of the
adjustable frequency drive.
4
Mains phase loss1)
X
X
X
Missing phase on supply side, or the voltage imbalance is
too high. Check the supply voltage.
7
DC overvoltage
1)
X
X
–
DC link voltage exceeds limit.
8
DC undervoltage
1)
X
X
–
DC link voltage drops below the voltage warning low
limit.
9
Inverter overloaded
X
X
–
More than 100% load for too long.
10
Motor ETR overtemperature
X
X
–
Motor is too hot due to more than 100% load for too
long.
11
Motor thermistor overtem-
perature
X
X
–
Thermistor or thermistor connection is disconnected, or
the motor is too hot.
12
Torque limit
X
X
–
Torque exceeds value set in either
parameter 4-16 Torque
Limit Motor Mode
or
parameter 4-17 Torque Limit Generator
Mode
.
13
Overcurrent
X
X
X
Inverter peak current limit is exceeded. If this alarm
occurs on power-up, check whether power cables are
mistakenly connected to the motor terminals.
14
Ground 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 the adjustable frequency drive.
25
Brake resistor short-circuited
–
X
X
Brake resistor is short circuited, thus the brake function is
disconnected.
26
Brake overload
X
X
–
The power transmitted to the brake resistor over the last
120 s exceeds the limit. Possible corrections: Decrease
brake energy via lower speed or longer ramp time.
27
Brake IGBT/Brake chopper short
circuited
–
X
X
Brake transistor is short-circuited, thus the brake function
is disconnected.
28
Brake check
–
X
Brake resistor is not connected/working.
30
U phase loss
–
X
X
Motor phase U is missing. Check the phase.
31
V phase loss
–
X
X
Motor phase V is missing. Check the phase.
32
W phase loss
–
X
X
Motor phase W is missing. Check the phase.
34
Fieldbus fault
X
X
–
PROFIBUS communication issues have occurred.
35
Option fault
–
X
–
Serial communication bus detects internal errors.
36
Mains failure
X
X
–
This warning/alarm is only active if the supply voltage to
the adjustable frequency drive is less than the value set
in
parameter 14-11 Mains Voltage at Mains Fault
, and
parameter 14-10 Mains Failure
is NOT set to
[0] No
Function
.
38
Internal fault
–
X
X
Contact the local Danfoss supplier.
40
Overload T27
X
–
–
Check the load connected to terminal 27 or remove short
circuit connection.
Maintenance, Diagnostics an...
VLT
®
Midi Drive FC 280
44
Danfoss A/S © 11/2015 All rights reserved.
MG07A122
8
8
