Disabling The Ground Detection Alarm; Setting The Current Limit Value - HindlePower AT30 SERIES Operating And Service Instructions

Using Ground Detection in Charger Standby Mode
If you put the AT30 into standby mode by opening the dc circuit breaker
(CB2), the ground detection circuit will send an erroneous positive (+)
ground fault alarm. There are two (2) ways to work around this:
• Disable the ground detection circuit while the AT30 is in standby, as
described below.
• Put the AT30 into standby by opening the ac input circuit breaker (CB1),
and leaving the dc circuit breaker (CB2) closed.
Operating the AT30 with the ac breaker (CB1) closed, but the dc breaker
(CB2) open, is an abnormal condition. It is not recommended.

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:
• Shut down the AT30 and lock out all ac and dc voltage sources. This
includes alarm and remote sense wires if they were installed. Open the
front panel door and check with a voltmeter before proceeding.
• Locate jumper J5 at the top left of the Main Control PC Board (A1) as
shown on the previous page. Move the jumper to the DISABLE
position. The POS GND and NEG GND indicators and the summary
alarm relay (TB3) will not respond to a ground fault.
Restart the AT30, following the procedure in Section 2.1.

2.3.5. Setting the Current Limit value

The AT30 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 Mode
sequence. If the AT30 is not in the Edit Mode, press the
six (6) times, until the meter display flashes the value of the Current Limit
setting (in Amperes). Press and release the
decrease the value in the display by one count, or press and hold the
key to scroll the value in the display upward or downward. When
DOWN
the meters display the desired Current Limit value, release the
key. If you go past the number you want, press the
to reach the number you want to set.
• Press the
• The new Current Limit setting is saved internally.
• The front panel display will flash End to confirm.
If you do not press any front panel key for 25 seconds, Edit Mode ends
automatically, and any change you made to the last setting is not saved.
key.
EDIT/ENTER
OPERATING THE AT30
EDIT/ENTER
or key to increase or
UP DOWN
or
UP DOWN
key
or
UP
or
UP DOWN
key again
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