Yaskawa SGDB - Manual (Page 117)

3.4 Setting Stop Mode
105
3.4 Setting Stop Mode
This section describes how to stop the motor properly.
3.4.1 Adjusting Offset
J “Why Does not the Motor Stop?”
When 0 V is specified as reference voltage for speed/torque control (analog reference),
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
J Adjusting the Reference Offset
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
in 1. Always use manual adjustment in 2.
3