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Troubleshooting and fault elimination
5
Troubleshooting and fault elimination
Status
e.g.
Present output frequency
Stop
(outputs U, V, W inhibited)
1
Inhibit
(outputs U, V, W inhibited)
Output frequency = 0 Hz
(outputs U, V, W inhibited)
DC-injection brake active
L
Current limit reached
Undervoltage on DC bus
d
Overvoltage on DC bus during
deceleration (warning)
No access to code
Remote keypad is active
Error
Data on EPM not valid
EPM error
Digital inputs not
uniquely assigned
d
Dynamic braking fault
External error
Internal fault
Communication error
Communication error
J
Remote keypad fault
Automatic start inhibited
(1) The drive can only be restarted if the error message has been reset; see c70
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Cause
Trouble free operation
LOW signal at terminal 28
Controller is set up for remote
keypad or serial control (see C01)
Setpoint = 0 Hz (C31 = 0)
Quick stop activated through digital
input or serial link
DC-injection brake activated
• via digital input
• automatically
Controllable overload
Mains voltage too low
Excessively short deceleration time
(C13, c03)
Can only be changed when the
1
controller is in
or
Attempt to use buttons on front of
controller
Cause
Data not valid for controller
Data error
OEM data not valid
EPM missing or defective
E1...E3 assigned with the same
digital signals
Either just "UP" or "DOWN" used
Dynamic braking resistors are
overheating
Digital input "TRIP set" is active
Serial timer has timed out
Serial communication failure
Remote keypad disconnected
c42 = 0
ENGLISH
Remedy
Set terminal 28 to HIGH
Start the controller via the remote
keypad or serial link
Setpoint selection
Deactivate Quick stop
Deactivate DC-injection brake
• digital input = LOW
• automatically after holding time
c06 has expired
Automatically (see C22)
Check mains voltage
Automatically if overvoltage
O
< 1 s,
, if overvoltage > 1 s
Set terminal 28 to LOW or inhibit
by serial link
Buttons on front of controller are
disabled when remote keypad is
active
Remedy
(1)
• Use EPM providing valid data
• Load Lenze setting
Power down and replace EPM
Each digital signal can only be
used once
Assign the missing digital signal to
a second terminal
Increase deceleration time
Remove external error
Please contact Lenze
Check serial link connections
Please contact Lenze
Check remote keypad connections
LOW-HIGH signal change at
terminal 28
19
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