Danfoss VLT FC 280 Operating Manual page 114

VLT® Midi Drive FC 280
Operating Guide
Bit Hex Dec
21 00200000 2097152
22 00400000 4194304
23 00800000 8388608
24 01000000 16777216
25 02000000 33554432
26 04000000 67108864
27 08000000 134217728
28 10000000 268435456
29 20000000 536870912
30 40000000 1073741824
31 80000000 2147483648
8.5 Troubleshooting
Table 60: Troubleshooting
Symptom Possible cause
Motor not running LCP stop
Missing start signal
(standby)
Motor coast signal
active (coasting)
Wrong reference
signal source
114 | Danfoss A/S © 2022.02
Alarm word Alarm
word 2
W phase Option
loss fault
Fieldbus Locked ro-
fault tor
24 V supply Position
low ctrl. fault
Mains fail- Reserved
ure
Reserved Current
limit
Brake resis- Reserved
tor
Brake IGBT Reserved
Option Reserved
change
Drive initial- Encoder
ized loss
Safe Torque Reserved
Off
Mech. brake Reserved
low
Test
Check if [Off] has been pressed.
Check parameter 5-10 Terminal 18 Digital In-
put of correct setting for terminal 18 (use
default setting).
Check parameter 5-12 Terminal 27 Digital In-
put for correct setting of terminal 27 (use
default setting).
Check the following:
Alarm Warning Warning
word 3 word word 2
Reserved Reserved Reserved
Reserved Fieldbus Memory
fault module
Reserved 24 V supply Reserved
low
Reserved Mains fail- Reserved
ure
Reserved Current lim- Reserved
it
Reserved Reserved Reserved
Reserved Reserved Reserved
Reserved Encoder Reserved
loss
Reserved Reserved Back EMF
too high
Reserved Safe Torque Reserved
Off
Reserved Reserved Reserved
Maintenance, Diagnostics, and
Troubleshooting
Extended Extended
status status
word word 2
Reserved Sleep
Reserved Sleep
boost
Reserved Running
Reserved Bypass
Reserved Reserved
Reserved External in-
terlock
Reserved Reserved
Reserved FlyStart ac-
tive
Reserved Heat sink
clean
warning
Reserved Reserved
Database Reserved
busy
Solution
Press [Auto On] or [Hand On] (de-
pending on operating mode) to
run the motor.
Apply a valid start signal to start
the motor.
Apply 24 V on terminal 27 or pro-
gram this terminal to [0] No opera-
tion.
Program correct settings. Set pre-
set reference active in parameter
group 3-1* References. Check for
AQ381425076031en-000101 / 130R1223