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APPLICATIONS OF Σ-SERIES PRODUCTS

3.4.1 Adjusting Offset

104

3.4 Setting Stop Mode

This section describes how to stop the motor properly.

3.4.1 Adjusting Offset 104.................................................

3.4.2 Using Dynamic Brake 105............................................

3.4.3 Using Zero-Clamp 106...............................................

3.4.4 Using Holding Brake 107.............................................

3.4.1 Adjusting Offset

1) “Why does not the motor 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 volt-

age 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

2) The following two methods can be used to adjust the reference offset to 0 V.

1) Automatic adjustment of

reference offset

Reference offset is automatically adjusted to 0 V.

2) 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.

YASKAWA SGDA series User Manual

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