Chapter: Testing Specimens
3-16 M10-16245-EN
5. Check the box again to re-enable the limit.
A Crosshead Travel Limit Trips
When the crosshead contacts either the upper or lower limit stop, the test stops. If this
happens, use the jog buttons to move the crosshead off the limit stop. Press the button to
move the crosshead off the upper limit stop. Press the button to move the crosshead off
the lower limit stop. The
TEST IN PROGRESS indicator light illuminates when you move
the crosshead.
Second Level Limit Stops
The second level limit switch acts as a backup if the first level switch (the limit stops)
malfunctions. Activating a second-level limit switch disables the drive system so you cannot
move the crosshead. The second level limits are internal to the machine and cannot be
manually adjusted.
You press the Emergency Stop button
Refer to “Emergency Stop Button” on page 3-13.
The System Shuts down Unexpectedly
1. To verify that power has been disabled, ensure that the POWER indicator is not
illuminated.
2. Save your existing data.
3. Exit the software program.
4. Before you resume testing, determine why the system shut down and take the necessary
steps to avoid repeating the action. Check the following:
• Are all cables connected?
Hazard - Identify and resolve the condition that caused the operation of the
secondary overtravel limit before you use the testing system.
Operation of a secondary overtravel limit indicates a serious problem with your
testing system, not least that the primary overtravel limit may have failed. Identify
and resolve the condition that caused the secondary overtravel limit to trip before
you use the testing system again. Contact the Instron service department for
assistance.
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