Owner manual

Model ESM301 / ESM301L Version 2 Test Stand User’s Guide

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 direction of the other limit. 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:

1. Canceling the cycle sequence:

Press RESET to stop and reset the cycle sequence. The cycle counter will revert to the

number of cycles originally programmed.

2. Resuming the cycle sequence:

Press UP or DOWN to resume.

Once the sequence has been completed, the screen will revert to the number of cycles programmed

originally. To begin another cycle test, press UP or DOWN.

Travel indication and limit switch operation is the same as in Basic Mode.

5.5 Preload Mode

In this mode, the crosshead moves at an approach speed of 10 in/min (250 mm/min) until the

programmed preload value has been reached. If moving in the up direction, a tension preload is required.

If moving in the down direction, a compression preload is required. When the preload is reached, the

sequence of events programmed in the Preload setting occurs (see Section 4.7.1). If the ZERO,GO

setting is selected, the crosshead speed will revert to the set speed after travel indicator is zeroed.

Note 1: Before the start of a preload sequence, the crosshead must be positioned at either the upper or

C Y C L E S 0 0 0 2 4

me n u m i n ma x S E T

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