Siemens SINAMICS S120 Function Manual page 97

● OFF2
– Immediate pulse suppression, the drive coasts to standstill.
– The motor brake (if parameterized) is closed immediately.
– Switching-on inhibited is activated.
● OFF3
– Switch to speed-controlled operation
– n_set = 0 is input immediately to brake the drive along the OFF3 deceleration ramp
– When standstill is detected, the motor brake (if parameterized) is closed.
– The pulses are suppressed when the motor brake application time (p1217) has elapsed.
– Switching-on inhibited is activated.
Function diagrams (see SINAMICS S120/S150 List Manual)
● 5060
● 5610
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p1300[0...n]
● r1406.8...12
● p1501[0...n]
● p1511[0...n]
● p1512[0...n]
● p1513[0...n]
● r1515
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
(p1135).
Standstill is detected when the actual speed value is less than the speed threshold
(p1226) or when the monitoring time (p1227) that started when speed setpoint ≤ speed
threshold (p1226) has expired.
Servo control - Torque setpoint, switchover control mode
Servo control – torque limiting/reduction, interpolator
Open-loop/closed-loop control operating mode
CO/BO: Control word, speed controller
BI: Change over between closed-loop speed/torque control
CI: Supplementary torque 1
CI: Supplementary torque 1 scaling
CI: Supplementary torque 2
Supplementary torque total
Servo control
5.5 Speed controller
95