Fault
num‐
ber
Alarm/
warning
bit num‐
ber
Fault text
Warn‐
ing
Alarm
Trip
lock
Cause of problem
80
29
Drive initialised
–
X
–
All parameter settings are initialized to default settings.
87
47
Auto DC Brak-
ing
X
–
–
The drive is auto DC braking.
95
40
Broken Belt
X
X
–
Torque is below the torque level set for no load, indicat-
ing a broken belt. See
parameter group 22-6* Broken Belt
Detection
.
99
Locked rotor
–
X
–
The rotor is locked or the load is too high.
126
–
Motor Rotating
–
X
–
High back EMF voltage. Stop the rotor of the PM motor.
200
–
Fire Mode
X
–
–
Fire mode has been activated.
202
–
Fire Mode Lim-
its Exceeded
X
–
–
Fire mode has suppressed 1 or more warranty voiding
alarms.
250
–
New spare part
–
X
X
The power or switch mode power supply has been ex-
changed. Contact the local Danfoss supplier.
251
–
New Typecode
–
X
X
The drive has a new type code. Contact the local Danfoss
supplier.
Troubleshooting
Operating Guide | VLT® Compressor Drive CDS 803
AQ321748767627en-000101 / 130R0570
42 | Danfoss A/S © 2019.12