User guide

OPERATING THE AT30

2.3. SETTING PARAMETERS IN THE AT30

2.3.1. Understanding Parameter Settings

You can change the settings of the AT30 while the charger is operating,

using the front panel controls. The changes you make take effect

immediately, and are saved internally. If the charger is taken out of

service, and then later returned to service, it restarts using the last values

you set. You can adjust the following parameters:

• Float voltage

• Equalize voltage

• Equalize timer (in hours)

• High dc voltage alarm setting

• Low dc voltage alarm setting

• Current limit value (in Amperes)

• High dc voltage shutdown feature (on or off)

Your choice of equalize method is also saved internally.

When you want to change any parameter, press the EDIT/ENTER key to put

the AT30 into Edit mode. The meter display flashes about once per

second, and the status indicators prompt you to adjust the respective

parameter. You adjust each parameter by pressing the UP or DOWN key

until the reading you want shows on the meter display. You can make the

display scroll up or down continuously by pressing and holding the UP or

DOWN key.

You cannot exceed certain upper and lower limits for the operating

parameters. To see what the limits are for your charger, refer to the AT30

Specifications in Appendix A on page 64.

When you first press the EDIT/ENTER key, the AT30 prompts you to adjust

the first parameter in the list above (float voltage). When you obtain the

value you want on the display, press the EDIT/ENTER key again. The AT30

saves the new setting internally, and then prompts you to adjust the

second parameter. You continue this way to adjust the first six parameters

in the list above. If you want to skip adjusting any parameter, just press

the EDIT/ENTER key again. The AT30 moves to the next parameter.

When you are finished adjusting the sixth parameter (current limit), press

the EDIT/ENTER key again. The AT30 saves all adjustments you made

internally, and reverts to normal operation. The new settings take effect

immediately.

Edit mode ends automatically if you do not press any front panel key

within 25 seconds, and any change you made to the last setting is not

saved.