MTS Systems FlexTest SE Service Information

Model 493.02 Controller Service
Calibrating an Extensometer
Calibration
176
Task 2 Turn on hydraulic pressure
This task activates the hydraulic pressure and ensures you have control
of your actuator.
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.
1. Ensure that the extensometer signal you are calibrating has strain
selected for its active control mode.
2. If the Hydraulic Interlock or Program Interlock indicator is lit,
determine the cause, correct it, and then click Reset.
If either interlock indicator lights again, you will need to
determine the cause of the interlock and correct it before
proceeding.
3. In the Power selection box, click the Low button, and then High
for the HPU. If an HPU is not listed, start the HPU at the pump.
Note The HPU can be configured for “first on”. If this is the case, start the
appropriate HSM.
4. If an HSM is present, click the HSM Low button, and then HSM
High for the appropriate HSM.
5. Apply a positive strain command, and observe the strain feedback
value on your meter.
If you have control of the actuator, proceed to Task 3 on page
177.
If you do not have control of the actuator (for example, the
actuator is hunting or moving in the wrong direction), disable
hydraulics, change the conditioner polarity, and then perform
Task 2 again.
For more detailed information on applying hydraulic pressure and
clearing interlocks, refer to FlexTest SE User’s manual.
WARNING

MTS Systems FlexTest SE Specifications

General

Brand	MTS Systems
Model	FlexTest SE
Category	Controller
Language	English