Siemens Sinumerik 840C Diagnostics Manual page 201

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07/97
300508 Zero mark error motor
Scan
Cyclic after control power up
Effect
for MSD:
S
Pulse suppression, motor runs down
S
SIMODRIVE_READY and DRIVE_READY are cancelled.
S
Power On error
for FDD:
S
Controllers are disabled, motor is braked
S
SIMODRIVE_READY and DRIVE_READY are cancelled
As from drive SW 2, response can be configured via MD 1612.8
Explanation
The counted number of encoder marks is incorrect on passing through the zero marker.
S
Defective encoder
S
EMC problems
S
Defective IPU submodule
Remedy
Eliminate cause; replace motor/611D hardware if necessary.
Note
Applies as from SW 3
300509 Converter limit frequency exceeded
Scan
Cyclic after control power up
Effect
for MSD:
S
Pulse suppression, motor runs down
S
SIMODRIVE_READY and DRIVE_READY are cancelled.
S
Power On error
for FDD:
S
Controllers are disabled, motor is braked
S
SIMODRIVE_READY and DRIVE_READY are cancelled
S
Power On error
Explanation
As from drive SW 2, response can be configured via MD 1612.9
Motor frequency has exceeded the limit frequency f
Possible causes:
Number of encoder marks in MD 1005 does not correspond to actual number of encoder marks.
Speed limitation MD 1147 or number of motor pole pairs MD 1112 in FDD or motor nominal frequency MD 1134
and motor nominal speed MD 1400 for MSD are equal to zero or not correct.
Limit frequency f
FDD
f = 1.12 * minimum(1.2*MD 1400, MD 1147) * MD1112/60
g
MSD
f = 1.12 * minimum(MD 1146, MD 1147) * number of pole pairs / 60
g
number of pole pairs = nominal motor frequency (MD 1134) * 60 / nominal motor speed (MD 1400)
Remedy
Check MD 1005 against actual number of encoder marks.
If necessary, check MD 1147 (speed limitation), MD 1400 (nominal motor speed) and additionally for
MSD: MD 1134 (nominal motor frequency)
FDD: MD 1112 (number of motor poles).
Note
Applies as from SW 4
300510 Fault in center frequency measurement
Scan
Cyclic after control power up
S
Effect
Pulse suppression, motor runs down
S
SIMODRIVE_READY and DRIVE_READY are cancelled.
S
Power On error
Explanation
Speed too high at center frequency measurement
Remedy
Reduce speed
Note
Applies as from SW 4
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
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1 Alarms
1.5.1 Alarm description
POWER ON
POWER ON
POWER ON
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