Siemens 6SE7011-5EP60 Operating Instructions Manual page 133

Faults and Alarms
Number / Alarm Cause
A037 The brake checkback indicates the "Brake still
open" state.
Brake checkback
"Brake still open"
A041 The line voltage is too high or the drive line
voltage (P071) is incorrectly parameterized.
Vdmax controller inhibit The Vdmax controller is disabled despite
parameter access (P515), as otherwise the
motor would accelerate immediately in
operation to the maximum frequency.
A042 Motor is stalled or blocked.
Motor stall/lock The alarm cannot be influenced by P805
"PullOut/BlckTime", but by P794 "Deviation
Time"
A043 The permissible change value of the speed
encoder signal (P215) has been exceeded.
n-act jump
Additionally for synchronous motors
(P095=12):
The motor rotates with more than 2% of the
rated speed at the time of inverter release.
The inverter status "Ready for operation" is not
exited.
13-20
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Counter-measure
Check brake checkback (see FD 470)
Check
- the line voltage
- P071 Line Volts
Check
- whether the drive is locked
- whether the encoder cable is interruped
during speed control and whether the shield is
connected.
- Whether the drive has stalled
- For synchronous motors (P095=12):
excitation current injection
Check the tachometer cables for interruptions.
Check the earthing of the tachometer shield.
- The shield must be connected both on the
motor and on the converter side.
- The encoder cable must not be interrupted.
The encoder cable must not be laid with the
power cables.
- Only the recommended encoders should be
used.
- If there is a signal fault, use the DTI board if
necessary. If required, change P215.
- Additionally for synchronous motors
(P095=12):
Do not grant inverter release until the motor is
at standstill
6SE7087-6JP60
SIMOVERT MASTERDRIVES
Industry Automation
10.2001
Siemens AG
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