Lucent Technologies Lineage
®
2000 ECS-12 Controller J85501D-2
Issue 3 August 1998
Product Description 2 - 13
The controller equipped with CP2 is capable of Rectifier
Sequence Control without an external sequence controller. The
TR signal input to the controller may also be used for other
on/off control of rectifiers by an external control device. (See
ECS Controller Options Product Manual, Select Code
167-790-109.)
Float and
Equalize Control
The Lineage
®
2000 SR-series rectifiers used with the ECS-12
controller are capable of battery equalize charging in addition to
normal float charging. The equalize feature may be used to
recharge flooded type, i.e., non-sealed, batteries in less time than
when the float voltage is used. Some battery manufacturers
recommend equalize charging after a discharge; others
recommend periodic equalizing of batteries.
The equalize feature may also be used as a “Temperature
Protection” mode in plants with sealed-type or valve-regulated
batteries and 210-series Battery Thermal Compensation
modules. In this mode, the rectifier equalize or temperature
protection voltage is set lower than the float voltage and is
initiated under control of the 210-series modules whenever a
high battery temperature is sensed, in an effort to combat a
thermal runaway event.
The ECS-12 controller has several methods of controlling the
equalize function in plants that are so equipped:
Hardware Disable: A movable jumper strap on the 113B
may be used to disable the equalize function and lock the
plant in float mode. This is especially important for plants
equipped with sealed-type or valve-regulated batteries
without temperature compensation and for plants powering
equipment sensitive to high voltages. Batteryless plants
also have no need for the equalize function. The controller
is always shipped with equalize disabled by this jumper to
prevent accidental misapplication of the equalize feature.
(See Section 4, “Hardware Setup” for details.)
Local Manual Control: A momentary toggle switch on
the controller front panel may be used to switch the
rectifiers in the plant from float mode to equalize mode
and back again. This control is disabled when equalize is
hardware disabled with the jumper described above.
