Speed Control (S); Configuring Speed Setpoint - Siemens SINAMICS V90 Operating Instructions Manual

Control functions

7.5 Speed control (S)

Selecting the target position and starting the positioning with the rising edge of the signal STEPF,
STEPB or STEPH
If the signal STEPF is enabled, the servo motor, at a rising edge of STEPF, traverses to next
fixed position setpoint. For example, if the servo motor currently locates at the fixed position
setpoint 3, the servo motor traverses to the fixed position setpoint 4 at a rising edge of
STEPF.
If the signal STEPB is enabled, the servo motor, at a rising edge of STEPB, traverses to
previous fixed position setpoint.
If the signal STEPH is enabled, the servo motor, at a rising edge of STEPH, traverses to the
fixed position setpoint 1.
Note
The servo drive can respond to the rising edge of the signal STEPF, STEPB or STEPH only
when the servo motor is at a standstill.
If the servo motor is at fixed position 8, a rising edge of STEPF is not responded.
If motor is at fixed position 1, a rising edge of STEPH is responded, but a rising edge of
STEPB is not responded.
During positioning, if the motor stops unexpectedly, the drive assumes that the target
position has been reached; for example, if the motor stops between POS2 and POS3
because of a fault after the signal STEPB (traversing to POS2) is given, the drive assumes
that POS2 has been reached.
7.5 Speed control (S)
7.5.1

Configuring speed setpoint

Eight sources in total are available for speed setpoint. You can select one of them with the
combination of digital input signals SPD1, SPD2 and SPD3:
Refer to "DIs (Page 90)" for more information about the digital signals SPD1, SPD2 and
SPD3.
198
Digital signal
SPD3 SPD2
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
SPD1
0 External analog speed setpoint (analog input 1)
1 Fixed speed setpoint 1 (p1001)
0 Fixed speed setpoint 2 (p1002)
1 Fixed speed setpoint 3 (p1003)
0 Fixed speed setpoint 4 (p1004)
1 Fixed speed setpoint 5 (p1005)
0 Fixed speed setpoint 6 (p1006)
1 Fixed speed setpoint 7 (p1007)
Operating Instructions, 09/2016, A5E36037884-002
Torque limit
SINAMICS V90, SIMOTICS S-1FL6