Yaskawa Sigma Mini - Manual (Page 84)

APPLICATIONS
2.4.1 Offset Adjustment
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2.4 Setting Stop Mode
This section describes how to stop the motor properly.
2.4.1 Offset Adjustment
Why does the motor not stop?
When 0 V is specified as reference voltage for Servopack for speed/torque control, the motor
may rotate at a very slow speed and fail to stop. This happens when reference voltage from
the host controller or external circuit has a slight reference offset (in mV units). If this offset is
adjusted to 0 V, the motor will stop.
When reference voltage from the host
controller or external circuit has an offset
Offset
Offset adjustment
Offset is corrected
by the Servopack. Reference
voltage
Reference
speed or
reference torque
Reference
voltage
Reference speed
or reference torque
Reference Offset Adjustment
The following two methods can be used to adjust the reference offset to 0 V.
Automatic adjustment of reference
offset
Reference offset is automatically adjusted to 0 V.
Manual adjustment of reference
offset
Reference offset can be intentionally set to a
specified value.
Note If a position control loop is formed in the host controller, do not use automatic adjustment.
Always use manual adjustment.
For detailed adjustment procedures, refer to the following sections of Chapter 3 Using the
Digital Operator.
Adjustment Method Section
Automatic adjustment of reference
offset
3.2.4 Reference Offset Automatic Adjustment Mode.
Manual adjustment of reference
offset
3.2.5 Reference Offset Manual Adjustment Mode.
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