Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
11. Used Parameters
KSW-122
C.. Machine
Par. Description Fieldbus-
address
C22
Axis, OFF
r=3, w=3
Time load start: Only when C20=1. Time for the difficult startup with the torque defined under
C21.
Value range in s: 0.0 ... 5,0 ... 10.0
Fieldbus: 1LSB=0,1s; Type: I16; (raw value:32767 = 32.8 s); USS-Adr: 03 05 80 00 hex
2416h 0h
C30
Axis
r=2, w=3
J-load/J-motor: Ratio of the mass inertia of load to motor. In positioning applications C30 is used
to determine the torque feedforward. A theoretic torque reference value calculated from the mass to
be accelerated is applied to the torque reference value generated by the speed controller. The
standard deviations during the acceleration phases are significantly reduced by this. The torque
forward feed causes very "hard" movements and can create a vibration excitation in the mechanics.
For this reason, we recommend only entering C30 when actually needed and remaining accordingly
below the calculated value.
Value range: 0.0 ... 0,0 ... 512.0
Fieldbus: 1LSB=0,1; Type: I16; (raw value:32767 = 512.0); USS-Adr: 03 07 80 00 hex
241Eh 0h
C31
Axis
r=2, w=2
Proportional gain n-controller: Proportional gain of the speed controller. With C31=100%
and a speed deviation of 32 Rpm, the P-share of the speed controller supplies the standstill
moment M0 as reference value to the current or torque controller.
Value range in %: 0.0 ... 10,0 ... 800.0
Fieldbus: 1LSB=0,1%; Type: I16; (raw value:32767·LSB=800,0%); USS-Adr: 03 07 C0 00 hex
1 Only with control types with current control (B20 = 64:Servo or 2:VC).
241Fh 0h
C32
Axis
r=2, w=2
Integral time n-controller: Time constant of the I share in speed controller. A short integral
time causes a high integration speed and thus increases the "static rigidity" of the drive. With
dynamic processes, a short integral time can cause overswinging in the target position. In this case,
increase C32. The I-controller is deactivated with C32<1 msec.
At C31=100% and a speed deviation of 32 Rpm, the I share of the speed controller supplies the
nominal motor torque for the current or speed torque controller precisely after the integral time C32.
Value range in ms: 0.0 ... 50,0 ... 3276.7
Fieldbus: 1LSB=0,1ms; Type: I16; USS-Adr: 03 08 00 00 hex
1 Only with control types with current control (B20 = 64:Servo or 2:VC).
2420h 0h
C33
Axis
r=3, w=3
Low pass reference speed: Reference value smoothing. C33 should be increased in case of
reference value noise, vibrating mechanics or large external masses.
Value range in ms: 0.0 ... 0,0 ... 500.0
Fieldbus: 1LSB=0,1ms; Type: I32; raw value:1LSB=Fnct.no.12; USS-Adr: 03 08 40 00 hex
2421h 0h
C34
Axis
r=2, w=2
n-motor low pass: Smoothing time constant for the measured motor speed in msec. Any noise
during the measurement of the motor speed causes disagreeable noise and an additional thermal
motor load. C34 helps to reduce speed noise and thus improve the smoothness of running. C34
should be kept as low as possible since an increase of C34 reduces the achievable controller gain
C31 and thus the dynamics.
Value range in ms: 0.0 ... 0,8 ... 10.0
Fieldbus: 1LSB=0,1ms; Type: I16; raw value:1LSB=Fnct.no.6; USS-Adr: 03 08 80 00 hex
2422h 0h
C36
Axis
r=2, w=2
Reference torque low pass: Smoothing time constant for the torque reference value on the
output of the speed controller in msec. Is used to suppress vibration and resonance. The effect of
torque smoothing is dosed with C37.
Value range in ms: 0.0 ... 1,0 ... 40.0
Fieldbus: 1LSB=0,1ms; Type: I16; raw value:1LSB=Fnct.no.5; USS-Adr: 03 09 00 00 hex
1 Only with control types with current control (B20 = 64:Servo or 2:VC).
2424h 0h