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OPERATING THE AT10.1
36
2.3.6. Enabling the High DC Voltage shutdown feature
The AT10.1 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 AT10.1 shuts down after 30 seconds to protect
the battery. The digital display reads E 03, and the summary alarm relay
contact transfers.
The AT10.1 is shipped 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.
The charger must be in normal operation (not
the Edit mode) to enable the high dc voltage
shutdown.
To enable the shutdown feature:
• Press and hold the UP key, then
• Press the CHRG MODE key.
The HIGH DC VOLTAGE indicator lights, and
the display flashes ON. You can toggle the
shutdown feature OFF and ON by pressing the
CHRG MODE key repeatedly.
Parallel Operation
If two (or more) AT10.1
chargers are connected in
parallel, both sense the
output voltage. If one
charger runs away, it will
supply all the output
current; the other has zero
output current. The high dc
voltage shutdown does not
operate in a charger with
zero output current, so that
only the defective charger
(of two or more in parallel)
shuts down. The other
charger continues to supply
the load normally.
If you don't press any key within 4 seconds, the last state indicated (ON or
OFF) is saved internally. Note that you don't use the EDIT/ENTER key for
this feature.
If the AT10.1 shuts down because of a high dc voltage, the meter display
shows error code E 03. Reset the charger by turning the ac breaker off,
then on again.