Efficient Networks Siemens Sinamics S120 - Manual (Page 131)

Vector control
4.7 Torque control
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
131
● OFF2
– Immediate pulse suppression, the drive coasts to standstill.
– The motor brake (if parameterized) is closed immediately.
– Power-on disable is activated.
● OFF3
– Switch to speed-controlled operation
– n_set = 0 is input immediately to brake the drive along the OFF3 deceleration ramp
(p1135).
– When zero speed is detected, the motor brake (if parameterized) is closed.
– The pulses are suppressed when the motor brake application time (p1217) has
elapsed. 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.
– Power-on disable is activated.
Function diagrams (see SINAMICS S List Manual)
● 6060 Torque setpoint
Overview of key parameters (see SINAMICS S List Manual)
● p0341 motor moment of inertia
● p0342 Ratio between the total moment of inertia and that of the motor
● p1300 Open-loop/closed-loop control operating mode
● p1499 Accelerating for torque control, scaling
● p1501 BI: Change over between closed-loop speed/torque control
● p1503 CI: Torque setpoint
● p1511 CI: Supplementary torque 1
● p1512 CI: Supplementary torque 1 scaling
● p1513 CI: Supplementary torque 2
● p1514 Supplementary torque 2 scaling
● r1515 Supplementary torque total