Danfoss VLT Midi Drive FC 280 Programming Manual page 126

Troubleshooting
No.
50 AMA calibration failed
51 AMA check U
52 AMA low I
53 AMA big motor
54 AMA small motor
55 AMA parameter range
56 AMA interrupt
57 AMA timeout
58 AMA internal
59 Current limit
6 6
60 External interlock
61 Encoder loss
63 Mechanical brake low
65 Control card temp
67 Option change
68 Safe Torque Off
69 Power card temp
80 Drive initialized to default value
87 Auto DC braking
88 Option detection
95 Broken belt
99 Locked rotor
120 Position control fault
126 Motor rotating
127 Back EMF too high
188
STO internal fault
nw
Not while running
run
Err. A wrong password was entered
Table 6.2 Warnings and Alarms Code List
1) Mains distortions may cause these faults. Installing a Danfoss line filter may rectify this problem.
124
VLT
Description Warning
–
and I –
nom nom
–
nom
–
–
–
–
–
–
X
–
X
–
X
–
2) X
X
–
X
–
X
–
–
–
X
2) –
–
–
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®
Midi Drive FC 280
Alarm Trip lock
X – A calibration error has occurred.
X – Wrong setting for motor voltage and/or motor current.
X – Motor current is too low. Check the settings.
The power size of the motor is too large for the AMA to
X –
operate.
The power size of the motor is too small for the AMA to
X –
operate.
The parameter values of the motor are outside of the
X –
acceptable range. AMA does not run.
X – The AMA is interrupted.
X – –
X – Contact Danfoss.
X – Frequency converter overload.
X – External interlock has been activated.
X – –
The actual motor current has not exceeded the release
X –
brake current within the start delay time window.
The cutout temperature of the control card has exceeded
X X
the upper limit.
A new option is detected or a mounted option is
X –
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
X – 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 cutout temperature of the power card has exceeded
X X
the upper limit.
X – 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.
X X The option is removed successfully.
X – –
X – Rotor is blocked.
X – –
X – PM motor is rotating when execute AMA.
– – The back EMF of PM motor is too high before starting.
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 powered by
X –
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.
Parameters can only be changed when the motor is
– –
stopped.
Occurs when using a wrong password for changing a
– –
password-protected parameter.
Cause
MG07C302