Enabling The High Dc Voltage Shutdown Feature - HindlePower AT30 SERIES Operating And Service Instructions

OPERATING THE AT30

2.3.6. Enabling the High DC Voltage shutdown feature

The AT30 has a built-in high dc voltage shutdown feature. In case of any
maladjustment or internal failure that results in a continuous output
voltage that is too high, the AT30 shuts down after 30 seconds to protect
the battery. The front panel meter displays code E 03, and the summary
alarm relay contact (TB3) transfers.
The AT30 is normally shipped from the factory with the
High DC Voltage Shutdown feature disabled.
You can adjust the high dc voltage shutdown
(the setting is the same as the high dc voltage
alarm setting). Refer to Section 2.3.4.
To enable the shutdown feature:
• The AT30 must be in normal operation (not
the Edit Mode) to enable High DCV Shutdown.
• Press and hold the
• Press the
The HIGH DC VOLTAGE indicator lights, and
the display flashes ON. You can toggle the
shutdown feature OFF and ON by pressing the
key repeatedly.
CHRG MODE
If you do not press any key within four (4) seconds, the last state indicated
(ON or OFF) is saved internally. Note that you do not use the
key for this feature.
If the AT30 shuts down because of a high dc voltage, the meter displays
error code E 03. Reset the AT30 by turning the ac input circuit breaker
(CB1) off, then on again.
36
NOTICE
key, then...
UP
key.
CHRG MODE
Parallel Operation
If two (or more) AT30s are
connected in parallel, both
sense the output voltage. If
one AT30 runs away, it will
supply all the output
current. The other has zero
output current. The high dc
voltage shutdown does not
operate in an AT30 with
zero output current, so that
only the defective AT30 (of
two or more in parallel)
shuts down. The other
AT30 will continue
supply the load normally.
EDIT/ENTER
to