Siemens simovert masterdrives Betriebsanleitung Seite 274

Faults and Alarms
Number / Alarm Cause
A036 The brake checkback indicates the "Brake still
closed" state.
Brake checkback
"Brake still closed"
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.
A044 Only for synchronous motors (P095=12) in
operation:
I too low The difference smoothed with P159 between
excitation current setpoint and actual value
(r160 - r156) deviates from zero by more than
25 % of the rated magnetizing current.
13-20
Counter-measure
Check brake checkback (see FD 470)
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
Only for synchronous motors P095=12)
Check:
- whether the current limitation of the excitation
current control is too small,
- whether the dynamic performance of the
excitation current injection is too low,
- whether the excitation current injection
function is operating,
- whether the wiring of excitation current
actual-value P155 is correct,
- whether the wiring of excitation current
setpoint r160 is correct,
- whether there is a wire break between
MASTERDRIVES and the excitation device,
- whether the voltage limitation is too low for
dynamic excitation current control,
- whether the analog output for r160 takes
place without isolating amplifiers (despite
cable length > 4 m)
6SE7087-6KP60
Operating Instructions SIMOVERT MASTERDRIVES
02.2005
Siemens AG