Using the Digital Operator
7.2.3 Automatic Adjustment of the Speed and Torque Reference Offset
7 -24
5.
Press the MODE/SET Key to set to the servo OFF state (with motor power turned OFF).
Alternatively, press the DATA/SHIFT Key for a minimum of one second to set to the servo
OFF state.
6.
Press the DATA/SHIFT Key for a minimum of one second, and the display will revert to
Fn002 in the auxiliary function mode.
This ends operation under Panel Operator control.
The motor speed for operation under Digital Operator control can be changed with a user
constant:
User constant: Pn304, Unit: r/min. Standard setting: 500
The rotation direction of the Servomotor depends on the setting of user constant Pn000.0 “Rotation Direction.”
The above example shows a case where Pn000.0 is set to “0”.as a factory setting.
7.2.3 Automatic Adjustment of the Speed and Torque Reference Offset
When speed and torque control are used, the motor may rotate slowly even when 0 V isspecified
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 reference offset automatic adjustment mode automatically measures the offset and adjusts
the reference voltage. It adjusts both the speed and torque references.
The following diagram illustrates automatic adjustment of an offset in the reference voltage by
the Servopack.
Offset
Reference
voltage
Reference
voltage
Offset
automatically
adjusted in
Servopack
Automatic offset
adjustment
Speed or
torque
reference
Speed or
torque
reference
After completion of offset automatic adjustment, the amount of offset isstored in the Servopack.
The amount of offset can be checked in the speed reference offset manual adjustment mode. Re-
fer to
Section 7.2.4 Manual Adjustment of the Speed and Torque Reference Offset
for details.
The reference offset automatic adjustment mode cannot be used for setting the error pulses to
zero for a stopped Servopack when a position loop isformed with a host controller. In such cases,
use the reference offset manual adjustment mode. Refer to
Section 7.2.4 Manual Adjustment of
the Speed and Torque Reference Offset
for details.
7
INFO
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : [email protected]