Danfoss VLT Midi Drive FC 280 Instruction Manual

8.4 List of Warnings and Alarms
An (X) marked in Table 8.1 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
88

Danfoss VLT Midi Drive FC 280 Specifications

General

Brand	Danfoss
Model	VLT Midi Drive FC 280
Category	DC Drives
Language	English