Siemens Sinumerik 840C Diagnostics Manual page 222

1 Alarms
1.5.1 Alarm description
300769 Denominator bandwidth greater than double natural frequency
Scan
Cyclic after control power up
Effect
With MSD:
S
Pulse reset, motor coasts down
S
SIMODRIVE_READY and DRIVE_READY are reset.
S
Reset error
With FDD:
S
Controllers disabled, motor braked
S
SIMODRIVE_READY and DRIVE_READY are reset.
S
Reset error
Response via MD 1613.0 can be configured as from drive SW 2.
Explanation
The denominator bandwidth of a current or speed setpoint filter is greater than twice the natural frequency.
This error message is generated for the general band blocking only if:
Speed setpoint filterr 1:
MD 1516 > 0.0 or
MD 1520 100.0
Speed setpoint filter 2:
MD 1519 > 0.0 or
MD 1521 100.0
Current setpoint filter 1:
MD 1212 > 0.0
Current setpoint filter 2:
MD 1215 > 0.0
Current setpoint filter 3:
MD 1218 > 0.0
Current setpoint filter 4:
MD 1221 > 0.0
Remedy
The denominator bandwidth of a current or speed setpoint filter must be greater than double the natural frequency.
Speed setpoint filter 1:
MD 1515 x 2MD 15140.01MD 1520
Speed setpoint filter 2:
MD 1518 x 2MD 15170.01MD 1521
Current setpoint filter 1:
MD 1211 x 2MD 1210
Current setpoint filter 2:
MD 1214 x 2MD 1213
Current setpoint filter 3:
MD 1217 x 2MD 1216
Current setpoint filter 4:
MD 1220 x 2MD 1219
Note
Alarm in SW 5 and higher
300770 Filter factor cannot be represented
Scan
Cyclic after control power up
Effect
With MSD:
S
Pulse reset, motor coasts down
S
SIMODRIVE_READY and DRIVE_READY are reset.
S
Reset error
With FDD:
S
Controllers disabled, motor braked
S
SIMODRIVE_READY and DRIVE_READY are reset.
S
Reset error
Response via MD 1613.0 can be configured as from drive SW 2.
Explanation
The calculated filter coefficients for a band-stop filter cannot be represented in the internal format.
Remedy
Alter filter setting
Note
Alarm in SW 5 and higher
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
07/97
Reset key
Reset key