List of Parameters
Parameters
1-173
© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU240B/E-2 Parameter Manual (LH11), 01/2011
Description: Sets the time to apply the motor holding brake.
After OFF1 or OFF3 and the controlling (closing) of the holding brake, the drive remains stationary under closed-
loop control for this time with a speed setpoint of zero. The pulses are suppressed when the time expires.
Dependency: Refer to: p1215, p1216
Notice: If the selected closing time is too short with respect to the actual closing time of the brake, then the load can sag.
If the closing time is selected to be too long with respect to the actual closing time of the brake, the control works
against the brake and therefore reduces its lifetime.
Description: Sets the speed threshold for the standstill identification.
Acts on the actual value and setpoint monitoring.
When braking with OFF1 or OFF3, when the threshold is undershot, standstill is identified.
Dependency: Refer to: p1227
Note: Standstill is identified in the following cases:
- the speed actual value falls below the speed threshold in p1226 and the time started after this in p1228 has
expired.
- the speed setpoint falls below the speed threshold in p1226 and the time started after this in p1227 has expired.
The actual value sensing is subject to measuring noise. For this reason, standstill cannot be detected if the speed
threshold is too low.
p1217 Motor holding brake closing time / Brake t_close
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: -
Units group: - Unit selection: -
Min Max Factory setting
0 [ms] 10000 [ms] 100 [ms]
p1226[0...n] Threshold for zero speed detection / n_standst n_thresh
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: DDS, p0180
Units group: 3_1 Unit selection: p0505
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 20.00 [rpm]
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