User Manual

List of parameters
Parameters
1-175
© Siemens AG 2009 - 2013 All Rights Reserved
SINAMICS G120 CU240B/E-2 Control Units List Manual (LH11), 01/2013
Description: Sets the time to open the motor holding brake.
After the holding brake has been controlled (opened), the speed setpoint remains at zero for this time. After this, the
speed setpoint is enabled.
Dependency: Refer to: p1215, p1217
Note: For a motor with DRIVE-CLiQ and integrated brake, for p0300 = 10000, this time is pre-assigned the value saved in
the motor.
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.
Note: For a motor with DRIVE-CLiQ and integrated brake, for p0300 = 10000, this time is pre-assigned the value saved in
the motor.
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
Caution: For closed-loop speed and torque control without encoder, the following applies:
If p1226 is set to values under approx. 1 % of the rated motor speed, then the model switchover limits of the vector
control must be increased in order to guarantee reliable shutdown (see p1755, p1750 bit 7).
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.
p1216 Motor holding brake opening time / Brake t_open
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: 2701
Min Max Factory setting
0 [ms] 10000 [ms] 100 [ms]
p1217 Motor holding brake closing time / Brake t_close
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: 2701
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: - Dyn. index: DDS, p0180
Units group: 3_1 Unit selection: p0505 Func. diagram: 2701
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 20.00 [rpm]