List of Parameters
Parameters
1-157
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
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
Notice: For reasons relating to the compatibility to earlier software versions, a parameter value of 0 in indices 1 to 31 is
overwritten with the parameter value in index 0 when the Control Unit boots.
Note: Standstill is detected if the actual speed drops below the speed threshold in p1226 or if the monitoring time (p1227)
- started when speed setpoint <= speed threshold (p1226) - 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.
Description: Sets the monitoring time for the standstill identification.
When braking with OFF1 or OFF3, standstill is identified after this time has expired, after the setpoint speed has
fallen below p1226 (also refer to p1145).
Dependency: Refer to: p1226
Notice: For p1145 > 0.0 (RFG tracking) the setpoint is not equal to zero dependent on the selected value. This can there-
fore cause the monitoring time in p1227 to be exceeded. In this case, for a driven motor, the pulses are not sup-
pressed.
Note: Standstill (zero speed) is detected if, during the complete monitoring time (p1227), the speed setpoint falls below
the speed threshold (p1226).
For p1227 = 300.000 s, the following applies:
The monitoring is deactivated.
For p1227 = 0.000 s, the following applies:
With OFF1 or OFF3 and a ramp-down time = 0, the pulses are immediately suppressed and the motor "coasts"
down.
Description: Sets the delay time for pulse suppression.
After OFF1 or OFF3 and zero speed detection, the system waits for this time to expire and the pulses are then sup-
pressed.
Dependency: Refer to: p1226, p1227
Note: Standstill (zero speed) is detected if, during the complete delay time (p1228), the speed actual value falls below the
speed threshold (p1226).
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
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 20.00 [rpm]
p1227 Zero speed detection monitoring time / n_standst t_monit
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: -
Min Max Factory setting
0.000 [s] 300.000 [s] 300.000 [s]
p1228 Pulse suppression delay time / Pulse suppr t_del
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: -
Min Max Factory setting
0.000 [s] 10.000 [s] 0.010 [s]
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