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OPERATING THE AT10.1
35
Disabling the Ground Detection Alarm
You can disable the ground detection alarm circuit, and isolate the circuit
from chassis ground. If your battery is normally grounded, or you want to
defeat the alarm for any other reason, follow these steps:
• De-energize and lock out all ac and dc voltage sources to the AT10.1.
Check with a voltmeter before proceeding. This includes remote sense
wires if they were installed.
• Open the AT10.1 front panel, and locate jumper J5 at the top left of the
Control Circuit Board (shown on the previous page). Move the jumper to
the DISABLE position. The POS GND and NEG GND indicators and
the summary alarm relay will not respond to a ground fault.
Restart the AT10.1, following the instructions in section 2.1.
2.3.5. Setting the current limit value
The AT10.1 automatically limits its dc output current in case of overload
or battery discharge. You can adjust the value of the current limit from
50% to 110% of rated current. The factory setting is 110%.
The current limit adjustment is the last step in the normal Edit sequence. If
the AT10.1 is not in the Edit mode, press the EDIT/ENTER key five times,
until the meter display flashes the value of current limit, in Amperes. Press
and release the UP or DOWN key to increase or decrease the value in the
display by one count, or press and hold the UP or DOWN key to scroll the
value in the display upward or downward. When the display shows the
current limit value that you want to set, release the UP or DOWN key. If you
go past the number you want, press the UP or DOWN key again to reach the
number you want to set.
• Press the EDIT/ENTER key. The new current limit setting is saved
internally.
Edit mode ends automatically if you don't press any front panel key within
25 seconds, and any change you made to the last setting is not saved.