MTS Systems FlexTest SE Service Information

Model 493.02 Controller Service
Calibrating an LVDT
Calibration
120
Note If the actuator response is sluggish and/or the signal value does not
match the command, you will need to adjust the tuning of this
control mode. Increase the proportional gain (P Gain on the
Calibration submenu or tab) to correct sluggish actuator
movement. Increase the reset integration value (I Gain) to help the
feedback match the command.
At this point, unless the conditioner is already in calibration, the
actuator’s physical retraction will not equal your commanded
value. You will adjust gain in the next step so that the actuator’s
physical retraction and your commanded retraction match.
Example: Suppose your actuator has a 100% retraction of -10 cm.
In this step you would apply a -8 cm command, and even though
the station signals would read -8 cm of feedback, the actuator may
retract only -4 cm. This shows the conditioner/sensor pair are out
of calibration.
3. Adjust gain to retract the actuator until it equals your retraction
command.
Path: Setup > Disp. > Calibration > Cal Type > Gain/
Linearization > Post-Amp Gain
Adjust Post-Amp Gain on the Calibration submenu or tab until
your dial indicator or other readout device shows that the
actuator’s physical retraction equals your retraction command.
4. Record dial indicator and conditioner feedback readings at
predetermined retraction command points.
Note After shutting down system hydraulics, you will enter these
recorded readings on the Linearization Data window.
Stand-Alone:
A. Use the Dial to adjust the Setpoint for a 0% command.
B. Record the dial indicator value for the 0% command.
C. Enter the corresponding conditioner feedback reading.
D. Use the Dial to adjust the Setpoint for a -2% retraction
command.
E. Record the dial indicator value and conditioner feedback at
the -2% row of your record sheet.

MTS Systems FlexTest SE Specifications

General

Brand	MTS Systems
Model	FlexTest SE
Category	Controller
Language	English