Siemens SINAMICS V90 - Configuring Ramp Function (V90 PN Only)

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SINAMICS V-ASSISTANT Online Help
Operating Manual, 04/2017, A5E36618042-003
69
Source of torque setpoint
Two sources are available for torque setpoint:
● External setpoint: analog input 2
● Fixed setpoint: p29043
You can select these two sources with the digital input signal TSET:
Signal
Level
Source of torque setpoint
TSET
0 (default)
Analog torque setpoint (analog input 2)
1 Fixed torque setpoint (p29043)
4.3.4
Configuring ramp function (V90 PN only)
Ramp-function generator
The ramp-function generator is used to limit acceleration in the event of abrupt setpoint
changes and thus helps prevent load surges during drive operation.
The ramp-up time p1120 and ramp-down time p1121 can be used to set acceleration and
deceleration ramps separately. This allows a smoothed transition in the event of setpoint
changes.
To activate this function, select "②" from the drop-down list in the above window or set bit 0
of p29108 on the BOP first. Make sure you have properly connected the SINAMICS V90 PN
drive with the motor and the encoder works normally; otherwise, the ramp function generator
is disabled due to faults (for example, F31117 and F52983, etc.) despite that it is displayed
active in the above window. To activate the internal configuration of the ramp function
generator, you have to re-connect the motor and restart the drive. Then, you can continue
with either type of the ramp function generator.