Iuua – DC Power Technologies Charger Interface Software Manual User Manual

Page 41

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IUUa

7.1.4.

This profile is an option for infrequent charging of AGM traction batteries.

Stage 1 Current

Percentage of the nominal charger
current (set in the configuration) that
is used for the bulk charge stage,
normally set to 100%.

Stage 1 Timeout

Maximum time the charger will stay in
bulk charge. If this time is exceeded
the charger stops with a major alarm
as it could indicate a faulty battery
with short circuit cells. Whilst the
setting is in minutes the timeout is
actually calculated based on amp hours
returned to the battery rather than just
time, allowing a faulty charger module
to reduce the charge current available
and lengthen the bulk charge time
accordingly.

Although a faulty power module should
always be replaced, in most situations
the charger will still complete a charge
cycle with one module failed.

Stage 2 Voltage

Setting for the constant voltage stage,
set in accordance with the battery
technology depending on when a
particular battery type starts to gas.

Stage 3 Current

Percentage of the nominal charger
current to which the charge current
needs to reduce to in order to
transition to second constant voltage
stage.

Stage 2 Timeout

Maximum time the charger will stay in
the first constant voltage stage of the
cycle.

Stage 3 Voltage

Setting for the second constant voltage
stage.

EQ/Refresh Current

The percentage of the nominal charger
current (set in the configuration) that
is used for the refresh, second constant
current stage, actual setting depends
on the battery type and application.

EQ/Refresh Duration

The duration of the Refresh charge, be
it only constant current or a
combination of constant current and
constant voltage.

EQ/Refresh Max Cell Voltage

The maximum charger output voltage
during the refresh charge. Can either
be a trip or a second constant voltage
stage depending on the setting of
EQ/Refresh Constant Voltage.

Stage 3 Timeout

Maximum time the charger will stay in
the second constant voltage stage.

Auto EQ/Refresh After

Time that the battery needs to remain
connected to the charger to initiate a
Refresh cycle. The actual setting
depends on the battery and the
application.

EQ/Refresh Lockout

Gives additional protection against a
Refresh charge starting without
adequate battery cool down time.

Temp Comp Factor

Factor used to adjust the chargers
voltage setting to allow for different
battery temperature in
mV/(°C/°F)/cell. In high rate
applications the setting of temperature
compensation is quite important and
may need to be adjusted to suit the
battery type and application.

Auto EQ/Refresh options

Some profile type selections allow the
following Auto Equalize options. Auto
Equalize must be enabled in the
Configuration tab.

Profile Auto Equalise Enable

When selected, the equalize options
are enabled, operating with the
EQ/Refresh Current, EQ/Refresh
Duration, EQ/Refresh Lockout and Auto
EQ/Refresh After parameters.