Control functions
7.6 Speed control (S)
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
259
7.6.3
Speed limit
Refer to "Speed limit (Page 229)" for details.
7.6.4
Torque limit
Refer to "Torque limit (Page 230)" for details.
7.6.5
Zero speed clamp
The function of zero speed clamp is used to stop motor and lock motor axis when motor
speed setpoint is below a parameterized threshold level (p29075).
This function is available only when the analog input 1 is used as the source of speed
setpoint. The digital input signal ZSCLAMP is used to activate this function. When both
motor speed setpoint and motor actual speed are below the parameterized threshold level
and signal ZSCLAMP is logic "1", the motor is locked. Drive exits from clamping state either
when the motor speed setpoint is above the threshold level or when the signal ZSCLAMP is
logic "0".
Parameter settings
Parameter
Range
Default
Unit
Description
p29075
0 to 200
200
rpm
Zero speed clamp threshold
p29060
6 to 210000
3000
%
Maximum analog speed setpoint correspond-
ing to 10 V
DI configuration
Signal type
Signal name
Pin assign-
ment
Setting
Description
DI
ZSCLAMP
To be as-
signed
1
When the motor speed setpoint is below
zero speed clamp threshold, the motor is
locked.
0
No action
