Troubleshooting and fault elimination
8-2
821XKlimaBA0399
8.1.3
Maloperation of the drive
Maloperation
Possible causes
Motor does not
rotate
-
DC-bus voltage too low
(Red LED is blinking every 0.4 seconds; message LU is displayed)
-
Controller inhibited
(green LED is blinking, display of the operating module: OFF, STOP or
AS_LC)
-
Setpoint = 0
-
DC braking active
-
Quick-stop function active
-
JOG setpoint activated and JOG frequency = 0
-
Fault message is displayed (see chapter 8.3 )
-
Mechanical motor brake is not released
Motor does not
rotate smoothly
-
Defective motor cable
-
Maximum current C022 and C023 too low
-
Motor underexcited or overexcited (check parameter setting)
Current
consumption of
motor too high
-
Setting of C016 too high
-
Setting of C015 too low
-
C088 and C091 are not adapted to the motor data.
8.2 Fault analysis using the history buffer
The history buffer is used to trace faults. The fault messages are
stored in the history buffer in the order of their occurrence.
The memory locations can be retrieved via the codes.
Structure of the history buffer
Code
C0168
Entry
Note
C161
Memory location 1
Active fault
If the fault is no longer active or has been acknowledged:
-
The contents of the memory locations 1-3 will be
C162
Memory location 2
Last fault
-
The contents of the memory locations 1-3 will be
saved in a ”higher” location.
-
The contents of the memory location 4 will be
C163
Memory location 3
Last but one fault
-
The contents of the memory location 4 will be
eliminated from the history buffer and cannot be read
any longer.
C164
Memory location 4
Last but two fault
eliminated from the history buffer and cannot be read
any longer.
-
Memory location 1 will be deleted (= no active fault).
8.3 Fault indications
Display
Fault
Cause
Remedy
---
No fault
-
-
EEr
External fault (TRIP-Set) A digital input assigned to the
TRIP-Set function has been
activated
Check external encoder
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Summary of Contents for 8210 HVAC Series
Page 52: ...Commissioning 5 14 821XKlimaBA0399 Show Hide Bookmarks...
Page 62: ...Commissioning 5 24 821XKlimaBA0399 Show Hide Bookmarks...
Page 64: ...During operation 6 2 821XKlimaBA0399 Show Hide Bookmarks...
Page 78: ...Configuration 7 14 821XKlimaBA0399 Show Hide Bookmarks...
Page 84: ...Troubleshooting and fault elimination 8 6 821XKlimaBA0399 Show Hide Bookmarks...
Page 88: ...Accessories 9 4 821XKlimaBA0399 Show Hide Bookmarks...
Page 92: ...Index 10 4 821XKlimaBA0399 Show Hide Bookmarks...
Page 93: ...Index 821XKlimaBA0399 10 5 Show Hide Bookmarks...
Page 94: ...Index 10 6 821XKlimaBA0399 Show Hide Bookmarks...