Advertisement
JD5003-00
Compensated (or firmware Version 6.52 or lower)
This is the default setting from the factory, and the only operation available on older units. If Jumper J30 is
set at the 2-3 position, the charger will operate using compensated voltages. The front panel meter will
display a dc voltage value modified for battery temperature. The displayed meter value will be different from
the actual charger dc output voltage, unless the battery is at the nominal temperature of 25°C (77°F).
The software alarm points (HVDC and LVDC) will move with temperature. If the float voltage is set at 131.0
and the HVDC alarm is set to 136.0, the HVDC alarm will not trip unless the output is 5 volts above the float
set-point. This means that if the actual charger dc output is at 135.0 due to temperature compensation, the
HVDC alarm will not trip until 140.0 actual output.
The hardware Low DC Voltage alarm is not affected by temperature compensation, and will always trip at
the same dc output voltage. This is the same as for the un-compensated setting.
If the remote TempCo probe circuit is shorted or opens while the charger is powered, an alarm code E 08 will
display on the front panel meter. If the probe circuit is open, and the charger is then shut down and re-
energized, there will be no error code upon start-up. Also, temperature compensation will not be active.
If AT Series Forced Load Sharing, see Operating Instructions (JA5054-00), is being used, both chargers
must have remote TempCo probes attached. The probe on the master (LS-P) charger will cause the output to
be adjusted for temperature, while the probe on the slave (LS-S) charger will compensate the display and
alarm set points. Both chargers must have jumper (J30) in the same position, or the displays and alarms will
not match.
Uncompensated (available only on firmware Version 6.53 or higher)
If Jumper J30 is set at the 1-2 position, the charger will operate using un-compensated voltages. The front
panel meter will display the actual charger dc output voltage. The displayed meter value will not be the same
as the user-specified dc voltage set-point, unless the battery is at the nominal temperature of 25°C (77°F).
The software alarm points (HVDC and LVDC) will not move with temperature. The alarm set-points will
need to be raised or lowered sufficiently to allow for dc output voltage variations, due to temperature
NOTICE
compensation.
HVDC alarm point of 144.0 when the temperature goes below 48°F on a lead-acid battery.
The hardware Low DC Voltage alarm is not affected by temperature compensation, and will always trip at
the same dc output voltage. This is the same as the compensated setting, or earlier firmware versions.
If the remote TempCo probe circuit is shorted or opens while the charger is powered, an alarm code E 08 will
display on the front panel meter. This code will replace the indicator for temperature compensation (Pb or
nicd). If the probe circuit is open, and the charger is then shut down and re-energized, there will be no error
code upon start-up. Also, temperature compensation will not be active.
If AT Series Forced Load Sharing, see Operating Instructions (JA5054-00), is being used, both chargers
must have remote TempCo probes attached. The probe on the master (LS-P) charger will cause the output to
be adjusted for temperature, while the probe on the slave (LS-S) charger will compensate the display and
alarm points. The temperature compensation indicator (Pb or nicd) will alternate with the load share
indicator (LS-S or LS-P). Both chargers must have jumper (J30) in the same position, or the displays and
alarms will not match.
TEMPCO 'NUTS & BOLTS'
The temperature probe consists of a glass bead thermistor (temperature-dependent resistor) mounted in an
epoxy puck, with double-faced tape for mounting on a dry surface. While the adhesive is compatible with
a wide range of materials, it is optimized for high surface energy materials (most metals, for example). The
probe should not be mounted on plastic surfaces, including most battery jars. It can be mounted on lead-
plated or nickel-plated cell connectors, a battery rack, or enclosure wall.
recommended as the best place for probe-mounting. In a battery room with little air movement, the inter-
cell connector will be closer to the actual battery internal temperature than the outside of a battery jar.
JD5003-00.Rev6.doc
AT10.1/AT30 Series Battery Charger
Using this feature, the default equalize setting of 139.0 will trip the default
Page 3 of 8
Application Note
Inter-cell connectors are
Rev. 6 - Last Printed 10/31/2014 10:31:00 PM
Advertisement
