General information
2.6 Function list
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
59
2.6
Function list
Function
Description
Control mode
Pulse train input position control
(PTI) (Page 222)
Implements accurate positioning through two pulse train
input channels: 5 V differential or 24 V single end signal. In
addition, it supports the S-curve position smoothing function
PTI
Fast pulse train input position con-
trol (Fast PTI) (Page 235)
Optimized PTI control mode to achieve a better dynamic
response performance
Fast PTI
Internal position control (IPos)
(Page 236)
Implements accurate positioning through internal position
commands (up to eight groups) and allows to specify the
acceleration/speed for positioning
IPos
Speed control (S) (Page 256)
Flexibly controls motor speed and direction through external
analog speed commands (0 - ±10 VDC) or internal speed
commands (up to seven groups)
S
Torque control (T) (Page 261)
Flexibly controls motor output torque through external ana-
log torque commands (0 - ±10 VDC) or internal torque
commands. In addition, it supports speed limit function to
prevent overspeed when a motor has no loads
T
Compound controls (Page 209)
Supports flexible switches among position control mode,
speed control mode, and torque control mode
PTI/S, IPos/S, PTI/T,
IPos/T, S/T
Absolute position system
(Page 290)
Allows to implement motion control tasks immediately after
the servo system with an absolute encoder is powered on,
needless of carrying out referencing or zero position opera-
tion beforehand
PTI
Gain switching (Page 330)
Switches between gains during motor rotation or stop with
an external signal or internal parameters to reduce noise
and positioning time, or improve the operation stability of a
servo system
PTI, IPos, S, Fast PTI
PI/P switching (Page 334)
Switches from PI control to P control with an external signal
or internal parameters to suppress overshooting during
acceleration or deceleration (for speed control mode) or to
suppress undershooting during positioning and reduce the
settling time (for position control mode)
PTI, IPos, S, Fast PTI
Safe Torque Off (STO) (Page 309) Safely disconnects torque-generating motor power supply
to prevent an unintentional motor restart
PTI, IPos, S, T, Fast
PTI
Zero speed clamp (Page 259)
Stops motor and clamps the motor shaft when motor speed
setpoint is below a parameterized threshold level
S
Cyclic communication (Page 271)
Supports the communication between the SINAMICS V90
servo drive and PLC with the standard Modbus communica-
tion protocol
PTI, IPos, S, T, Fast
PTI
One-button auto tuning (Page 316) Estimates the machine characteristic and sets the closed
loop control parameters (position loop gain, speed loop
gain, speed integral compensation, filter if necessary, etc.)
without any user intervention
PTI, IPos, S, T, Fast
PTI
Real-time auto tuning (Page 321)
Estimates the machine characteristic and sets the closed
loop control parameters (position loop gain, speed loop
gain, speed integral compensation, filter if necessary, etc.)
continuously in real time without any user intervention
PTI, IPos, S, T, Fast
PTI
Resonance suppression (Page 326) Suppresses the mechanical resonance, such as workpiece
vibration and base shake
PTI, IPos, S, T, Fast
PTI
