Calibrating Encoders
Model 493.02 Controller Service
Calibration
165
Task 4 Turn on hydraulic pressure
This task sets up the Control Panel so you can turn on the hydraulic
pressure.
Do not place any part of your body in the path of a moving actuator.
A crush zone exists between the actuator and any equipment in the
path of its movement. Immediate and unexpected actuator response is
possible when you apply hydraulic pressure to your system.
Stay clear of the actuators when applying hydraulic pressure.
See “Turn on hydraulic pressure” on page 108 for a detailed
procedure.
Task 5 Set the zero position
The zero position can be set anywhere within the full-scale range of
the encoder.
Stand-Alone:
A. Using the front panel Dial, adjust the Setpoint to move the
actuator to the position you want to assign as zero.
B. Select any control mode that does not use the encoder.
Path: Status > Control Mode
Note If the actuator should move after making the change in control
modes, you will need to reposition the actuator, then change to a
more stable control mode.
C. With the actuator in the desired zero position, click <<Auto
Zero>> button on the Offset/Zero submenu.
Path: Setup > Disp. > Offset/Zero > <<Auto Zero>>