Lenze EVF8212-EV020 User Manual

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 JOGfrequency = 0
- Fault message is displayed (see chapter 8.3 )
- Mechanical motor brake is not released
Motor does not
rotate smoothly
- Defective motor cable
- Maximumcurrent 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If the fault is no longer active or has been acknowledged:
-
T
h
e
c
o
n
t
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n
t
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o
f
t
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m
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c
a
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1
-
3
w
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b
e
C162 Memory location 2 Last fault
-
T
h
e
c
o
n
t
e
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o
f
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y
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o
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a
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s
1
-
3
w
i
l
l
b
e
savedina”higher” location.
-
T
h
e
c
o
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t
s
o
f
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y
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4
w
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b
e
C163 Memory location 3 Last but one fault
-
T
h
e
c
o
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o
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4
w
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l
b
e
eliminated fromthe history buffer and cannot be read
a
n
y
l
o
n
g
e
r
.
C164 Memory location 4 Last but two fault
e
l
i
m
i
n
a
t
e
d
f
r
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t
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s
t
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y
b
u
f
f
e
r
a
n
d
c
a
n
n
o
t
b
e
r
e
a
d
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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Lenze EVF8212-EV020 Specifications

General

Brand	Lenze
Model	EVF8212-EV020
Category	DC Drives
Language	English