Omron 8U0108-E1-01, Руководство пользователя

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XtraDrive User Manual Chapter 7: Using the Panel Operator
7-20
7.2.3. Automatic Adjustment of Speed and Torque Reference
Offset
When speed and torque control are used, the motor may rotate slowly
even when 0V is specified as the analog reference voltage. This occurs
when the host controller or external circuit has a small offset (measured
in mV) in the reference voltage.
The Automatic Reference Offset Adjustment mode automatically
measures the offset and adjusts the reference voltage. It adjusts both the
speed and torque references.
The following diagram illustrates the automatic adjustment of an offset
in the reference voltage by the servo amplifier.
Offset
Reference
voltage
Reference
voltage
Reference speed
or torque
Offset corrected
by XtraDrive
Reference speed
or torque
Offset adjustment
After completion of the automatic offset adjustment, the new offset
value is stored in the servo amplifier.
The offset value can be checked in the Speed Reference Offset Manual
Adjustment mode. Refer to
7.2.4 Manual Adjustment of the Speed and
Torque Reference Offset for details.
The Automatic Reference Offset Adjustment mode cannot be used to
set error pulses to zero for a stopped servo amplifier when a position
loop is formed with a host controller. In such cases, use the Manual
Reference Offset Adjustment mode. Refer to
7.2.4 Manual Adjustment
of the Speed and Torque Reference Offset for details .
The zero-clamp speed control function is available to force the motor to
stop while the zero speed reference is given. Refer to
5.4.3 Using the
Zero Clamp Function.
IMPORTANT
•
Automatic adjustment of the speed/torque reference offset must be performed in the servo OFF
state.