Siemens SINAMICS V90 Operating Instructions Manual page 238

Parameters
11.2 Parameter list
Par. No. Name
p1216 * Motor holding brake
opening time
Description: Sets the time to open the motor holding brake.
After controlling the holding brake (opens), the speed/velocity setpoint remains at zero for this time. After this,
the speed/velocity setpoint is enabled.
Dependency: Refer to p1215, p1217
Note: For a motor with integrated brake, this time is pre-assigned the value saved in the motor.
For p1216 = 0 ms, the monitoring and the message A7931 "Brake does not open" are deactivated.
p1217 * Motor holding brake clos-
ing time
Description: Sets the time to apply the motor holding brake.
After OFF1 or OFF3 and the holding brake is controlled (the brake closes), then the drive remains closed-loop
controlled for this time stationary with a speed setpoint/velocity setpoint of zero. The pulses are suppressed
when the time expires.
Dependency: Refer to p1215, p1216
Note: For a motor with integrated brake, this time is pre-assigned the value saved in the motor.
For p1217 = 0 ms, the monitoring and the message A07932 "Brake does not close" are deactivated.
p1226 Threshold for zero speed
detection
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.
The following applies when the brake control is activated:
When the threshold is undershot, the brake control is started and the system waits for the brake closing time
in p1217. The pulses are then suppressed.
If the brake control is not activated, the following applies:
When the threshold is undershot, the pulses are suppressed and the drive coasts down.
Dependency: Refer to p1215, p1216, p1217, p1227
Notice: For reasons relating to the compatibility to earlier firmware versions, a parameter value of zero in
indices 1 to 31 is overwritten with the parameter value in index 0 when the drive boots.
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.
p1227 Zero speed detection
monitoring time
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.
After this, the brake control is started, the system waits for the closing time in p1217 and then the pulses are
suppressed.
Dependency: Refer to p1215, p1216, p1217, p1226
238
Min Max
0 10000
0 10000
0.00 210000.00
0.000 300.000
Factory Unit Data
Setting type
100 ms Float
100 ms Float
20.00 rpm Float
300.000 s Float
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2017, A5E37208830-003
Effective Can be
changed
IM T, U
IM T, U
IM T, U
IM T, U