MTS Series 793 - Manual (Page 53)

How To Warm Up Station Hydraulics
MTS Series 793 Tuning and Calibration Tuning Procedures 53
How To Warm Up Station Hydraulics
It is good practice to warm up station hydraulics before tuning (or testing) by
exercising the actuator without a specimen. Remove any specimen and run the
system in displacement control for at least 30 minutes using a 80% full-scale
length command at about 0.1 Hz.
1. Select the following settings in the function generator.
Standalone FlexTest SE Controllers: Select Tuning > Manual > FG
Automated Controllers: Click on Station Manager:
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.
Unexpected actuator movement can cause injury to personnel, damage to
equipment, or both.
Stay clear of the actuators when applying hydraulic pressure.
C ONTROL S ETTING
Control Channel
(Automated Controllers
only) The control channel associated with the
valve you are adjusting.
Control Mode Displacement
Adaptive
Compensator None
Target Setpoint 0
Amplitude 80% of the full-scale actuator displacement
Frequency 0.1 Hz
Wave Shape Sine
WARNING