Appendix 1 / Motor Drive Calibration
Note:
The PWM motor drive module is not easily accessible, however user adjustment is typically
not necessary and is not recommended.
PWM Motor Drive
The PWM motor drive converts the system command voltage into a drive voltage for the actuator
motor. The motor drive consists of a separate power supply and PWM servo amplifier. This servo
amplifier is run in voltage mode for highest response and accuracy. All adjustments are sealed
when the system is shipped and should not require adjustment. If adjustment is required, this is
easily accomplished using the following procedure:
Note:
A digital voltmeter (DVM) with at least 2½ digit accuracy will be required during the
following procedure.
Adjustment Procedure:
1) Verify that the servo module is configured for voltage mode with the DIP switch set as
follows:
Switch
Setting
1 ON
2 OFF
3 OFF
4 OFF
2) Put the system into Manual mode and drive the actuator to ensure that it is not at a limit.
3) Connect the DVM leads to terminals 13 and 14 (motor output).
4) Verify that the DVM reads b1.00 and -1.00 volts. Adjust R4 (test--offset) on the
servo amplifier module if required.
5) Put the system into Automatic mode and verify that the system responds quickly to
position errors without oscillation.
6) If a whistling noise is heard from the servo amplifier module, adjust R3 (reference input
gain) CCW until it stops.
7) The other potentiometers are adjusted at the factory and do not require further
adjustment in the field.
Do not
attempt to adjust these potentiometers.
P2
P1
4
3
2
1
DIP SW.
R4
R3
R2
R1
1 2 3 4 5
1
PWM Servo Amplifier
MICRO
4000
®
NET
Web Guide Control System
15
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Содержание MICRO 4000 NET
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