Danfoss VLT Midi Drive FC 280 Operating Instructions Manual page 46

Maintenance, Diagnostics, a...
No. Description
53 AMA big motor
54 AMA small motor
55 AMA parameter range
56 AMA interrupt
57 AMA timeout
58 AMA internal
59 Current limit
61 Encoder loss
63 Mechanical brake low
65 Control card temp
67 Option change
68 Safe Stop
8 8
69 Power card temp
80 Drive initialised to default value
87 Auto DC braking
88 Option detection
95 Broken belt
120 Position control fault
188 STO internal fault
nw
Not while running
run
Err. A wrong password was entered
Table 8.1 Warnings and Alarms Code List
1) Mains distortions may cause these faults. Installing a Danfoss line filter may rectify this problem.
For diagnosis, read out the alarm words, warning words, and extended status words.
44
®
VLT Midi Drive FC 280
Warning Alarm Trip lock
– X –
– X –
– X –
– X –
– X –
– X –
X X –
X X –
– X –
X X X
– X –
X X –
X X X
X
X – –
– X X
X X –
– X –
– X –
– – –
– – –
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Cause
The power size of the motor is too large for the AMA to
operate.
The power size of the motor is too small for the AMA to
operate.
The parameter values of the motor are outside of the
acceptable range. AMA does not run.
The AMA is interrupted.
–
Contact Danfoss.
Frequency converter overload.
–
Actual motor current has not exceeded release brake-
current within start delay-time window.
The cut-out temperature of the control card has
exceeded the upper limit.
A new option is detected or a mounted option is
removed.
STO is activated. If STO is in manual restart mode
(default), to resume normal operation, apply 24 V DC to
terminals 37 and 38, and initiate a reset signal (via
fieldbus, digital I/O, or [Reset]/[Off Reset] key). If STO is in
automatic restart mode, applying 24 V DC to terminals 37
and 38 automatically resumes the frequency converter to
normal operation.
The cut-out temperature of the power card has exceeded
the upper limit.
All parameter settings are initialized to default settings.
Occurs in IT mains when the frequency converter coasts,
and the DC voltage is higher than 830 V for 400 V units,
and 425 V for 200 V units. The motor consumes energy
on the DC link. This function can be enabled/disabled in
parameter 0-07 Auto DC Braking.
The option is removed successfully.
–
–
24 V DC supply is connected to only 1 of the 2 STO
terminals (37 and 38), or a failure in STO channels is
detected. Ensure that both terminals are connected to
24 V DC supply, and that the discrepancy between the
signals at the 2 terminals is less than 12 ms. If the fault
still occurs, contact the local Danfoss supplier.
Parameter can only be changed when the motor is
stopped.
Occurs when using a wrong password for changing a
password-protected parameter.
MG07A102