Instron 5940 - Page 21

2-5
Control Panel
Product Support: www.instron.com
Figure 2-3 on page 2-4 illustrates the control panel. Table 2-1 on page 2-5 describes the
control panel’s functions.
Table 2-1. Control Panel Functions
Control Function
JOG UP Press the  JOG UP arrow button to move the crosshead in tension (away from the
base beam). Pressing the button increases the speed linearly, up to a maximum speed,
until you release the button.
JOG DOWN Press the  JOG DOWN arrow button to move the crosshead in compression
(toward the base beam). Pressing the button increases the speed linearly, up to a
maximum speed, until you release the button.
FINE JOG Turn this thumbwheel to slowly position the crosshead. This control lets you set an
accurate zero extension point, or set a precise grip position for loading specimens.
Note: on some control panels, this control is labeled
FINE POSITION.
ZERO
EXTENSION
Press this button to set the current position of the crosshead as the zero extension point
(or gauge length) position. After setting the zero extension point, the crosshead returns
to this position when:
• You press the RETURN button
• The crosshead encounters a pre-set limit or event that instructs the crosshead to
return to the zero extension point
Note’: on some control panels, this button is labeled
RESET GL (reset gauge length).
AT ZERO This indicator illuminates when the crosshead is at the zero extension point.
Note’: on some control panels, this indicator is labeled
AT GL (at gauge length).
POWER This indicator illuminates when the system power is in either STANDBY or FRAME
READY
mode. In STANDBY mode, the system supplies power to the load cell and
its conditioner board but not to the frame. In FRAME READY mode, the system
supplies power to all load frame and transducer components. This indicates that the test
system is ready for operation.
SPECIMEN
PROTECT
Press this button to toggle on or off the SPECIMEN PROTECT function. This
function protects the test specimen and load string components from overloads.
The
ON indicator flashes when SPECIMEN PROTECT is functioning.
START TEST After you set the test parameters, press this button to begin the test. When the
crosshead starts to move, the appropriate
TEST IN PROGRESS indicator
illuminates showing the direction of crosshead movement.
STOP TEST Press this button to stop crosshead motion during or at the end of a test. The TEST
STOPPED
indicator illuminates to show that the test has stopped, but that the
crosshead has not returned to the gauge length position.
RETURN Press this button to move the crosshead back to the gauge length position after a test.
The
RETURN IN PROGRESS indicator illuminates to show that the crosshead is
returning to the gauge length position.