Technical data

Drive functions
7.1 Servo control
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
165
Overview of important parameters (see SINAMICS S110 List Manual)
● p0325[0...n] Motor pole position identification current 1st phase
● p0329[0...n] Motor pole position identification current
● p0404.15 Commutation with zero mark
● p0431 Angular commutation offset
● p1980[0...n] Pole position identification procedure
● p1981[0...n] Pole position identification maximum movement
● p1982[0...n] Pole position identification selection
● p1983 Pole position identification test
● r1984 Pole position identification angular difference
● r1985 Pole position identification saturation curve
● r1987 Pole position identification trigger curve
● p1990 Pole position identification commutation angle offset commissioning
● r1992 Pole position identification diagnostics
● p1993 Pole position identification current, motion based
● p1994 Pole position identification rise time motion based
● p1995 Pole position identification motion based P gain
● p1996 Pole position identification motion based integral action time
● p1997 Pole position identification motion based smoothing time
7.1.14 Vdc control
Description
Vdc control can be activated if overvoltage or undervoltage is present in the supply voltage.
This prevents a fault from occurring due to the supply voltage and ensures that the drive is
always ready to use.
This function is activated by means of the configuration parameter (p1240). It can be
activated if an overvoltage or undervoltage is present. The torque limit of the motor at which
the Vdc controller is active can be affected if discrepancies in the supply voltage are
significant enough. The motor may no longer be able to maintain its setpoint speed or the
acceleration/braking phases could be prolonged.
The Vdc controller is an automatic P controller that influences the torque limits. It only
intervenes when the supply voltage approaches the "upper threshold" (p1244) or "lower
threshold" (p1248) and the corresponding controller is activated via the configuration
parameter (p1240).