Model ESM301 / ESM301L Test Stand User’s Guide
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5.4 Auto Return Mode
In this mode the crosshead moves to whichever limit it encounters first and stops. Then, the crosshead
returns at maximum speed to the other limit, whichever occurs first, and stops. The speed at which the
crosshead travels is dictated by the SPEED setting or UP SPEED and DN SPEED settings (if the
independent up and down speeds option is installed). Press UP or DOWN to initiate an Auto Return
sequence.
The crosshead can be stopped at any time during an Auto Return sequence by pressing STOP. To
resume the test, press UP or DOWN.
Note: If the crosshead has stopped at a soft limit, the limit condition may be overridden by pressing and
holding UP or DOWN for two seconds.
5.5 Cycling Mode
This mode cycles the crosshead between limits, whichever occurs first. One cycle consists of the
following steps:
1. Crosshead moves to a limit at the specified speed.
2. Crosshead stops for the specified amount of dwell time.
3. Crosshead reverses direction, returns to the other limit at the specified speed, and stops for
the specified amount of dwell time.
A cycling sequence can be initiated from any position and can start in either direction. If the crosshead is
at a limit, however, cycling can only be started in the opposite direction. To initiate a cycle sequence,
press UP or DOWN. During a cycle sequence, a counter will be displayed, indicating the number of cycles
remaining, as shown below:
As in Basic Mode, the min, max, and set soft keys are active during crosshead movement.
When the cycling sequence and the crosshead has stopped at a soft limit, the limit condition may be
overridden by pressing and holding UP or DOWN.
5.5.1 Dwell time
Dwell time is the amount of time, in seconds, for which the crosshead stops at a limit during a cycle
sequence. When the crosshead has reached a limit, a counter will be displayed, shown as follows:
If the DWELL U and/or DWELL L settings are set to 0, the crosshead will immediately reverse direction
upon reaching the corresponding limit, and no counter will be displayed.
The cycle sequence may be interrupted before it has been completed by pressing STOP. A soft key
labeled RESET will appear as follows:
At this point, there are two options:
C Y C L E S 0 0 0 2 4
me n u m i n ma x S E T
D
E L L : 0 0 0 1 . 5
me n u m i n ma x S E T
C Y C L E S : 0 0 0 2 4
R E S E T
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