Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
11. Used Parameters
KSW-114
B.. Motor
Par. Description Fieldbus-
address
B28
Axis, OFF
r=2, w=2
Encoder gearfactor: When the encoder for motor control for setting B20=2 (control type =
vector control) is not mounted directly on the motor shaft, the gear ratio between motor shaft and
the encoder must be specified here.
It must apply:
• B28 = Number of motor revolutions/number of encoder revolutions.
• An SSI or an incremental encoder must be used.
B28 can also assume negative values. Values whose amount is less than 1/10 may not be set.
When B28 is not equal to 1.000, E09 indicates the encoder position and not the rotor position.
Value range: -32.000 ... 1,000 ... 31.999
Fieldbus: 1LSB=0,001; Type: I16; (raw value:10 Bit=1); USS-Adr: 02 07 00 00 hex
1 Only with asynchronous machines (B20 less than 64:Servo-control).
221Ch 0h
B29
Axis
r=3, w=4
Tolerate overcurrent: With applications which run close to the overcurrent threshold of the
inverter, normal control procedures can cause undesired overcurrent malfunctions. For these
cases, the parameter B29 makes it possible to tolerate a crossing of the overcurrent threshold for
an adjustable number of current controller cycles.
The parameter should not be changed until after the max. current value has been checked with an
external current measuring instrument.
CAUTION
With B20 = 0:V/f-control and B20=1:sensorless vector control, B29 must be 0!
Value range in current-ctrl cycles: 0 ... 0 ... 20
Fieldbus: 1LSB=1current-ctrl cycles; Type: I8; USS-Adr: 02 07 40 00 hex
221Dh 0h
B30
Axis
r=3, w=3
Additional motor-operation: Only possible with B20=0 (V/f control). For multi-motor
operation. Permits the connection of an additional motor on the enabled inverter. This briefly
reduces motor voltage to prevent an overcurrent switch-off.
0: inactive;
1: active;
Fieldbus: 1LSB=1; Type: B; USS-Adr: 02 07 80 00 hex
1 Only with V/f control (B20=0).
221Eh 0h
B31
Axis, OFF
r=3, w=3
Oscillation damping: Large motors can have a tendency to sympathetic vibration during no
load. Increasing parameter B31 damps these vibrations with B20=2:SLVC. Values from 60 ... 100%
are suitable for problematic drives.
Value range in %: 0 ... 30 ... 100
Fieldbus: 1LSB=1%; Type: I16; (raw value:256·LSB=100%); USS-Adr: 02 07 C0 00 hex
221Fh 0h
B32
Axis, OFF
r=3, w=3
SLVC-dynamics: The reaction speed of the SLVC to changes in load can be influenced by B32.
The highest dynamics are B32=100%.
Value range in %: 0 ... 70 ... 100
Fieldbus: 1LSB=1%; Type: I16; (raw value:256·LSB=100%); USS-Adr: 02 08 00 00 hex
2220h 0h
B35
Axis
r=3, w=3
Offset raw-motorencoder: The parameter B35 is added to the encoder raw value or
accumulated encoder raw value. The results are indicated in E154 raw motor-encoder and E153
accumulated raw-motor-encoder.
The scaling of B35 depends on the motor encoder being used:
- EnDat
®
, SSI: MSB = 2048 encoder revolutions
- Resolver: 65,536 LSB = 1 encoder revolution (i.e., MSB = 32,768 encoder revolutions)
- Incremental encoder: 4 LSB = 1 increment
MSB = Most Significant Bit
LSB = Least Significant Bit
Fieldbus: 1LSB=1; Type: U32; USS-Adr: 02 08 C0 00 hex
2223h 0h