GE Industrial Solutions CPS6000 - Manual (Page 152)

CPS6000 –48V Indoor/Outdoor Power Shelf
Issue 21 January 2008
152
following a battery on discharge event. The fully depleted battery strings are to be
replaced with fully charged strings. Once the strings have been replaced, depressing the
Manual LVD Cont switches on the front of the ES772A module will result in the LVD
contactors closing and the LED blinking in green color. Continue to depress the
switches until the LED stops flashing and displays a continuous green color. This
indicates acceptance of command and continued closure of contactors. Note that
releasing the switches prior to the LED displaying a continuous green color will result
in the contactor opening and removing power to the load.
• External battery shunt input, (J1, pins 4 and 11). The battery shunt must be in the
VBatt(-) leg to maintain proper reference with the ES772A module. These inputs are
for the system controller to read battery current. The polarity of the connections should
be positive during battery discharge.
• Control and monitor two contactors. These connections are to control and monitor two
contactors, either of which could be a load or battery disconnect device.
• Monitor plant voltage for backup LVD function (in case of failure of controller during
battery discharge)
Module Connector Definitions
The ES772A module has five connectors that the user interfaces to, two are RJ-45 connectors
that are used for serial communication to ES773A VT-Probes, the ES771A Remote Voltage
Monitoring Module, and to the QS840A controller. The remaining connectors are used for
monitoring circuit breakers, contactors and shunts.
Mating part for J1 (14 pin) is Amp, part number 1-794617-4.
Mating part for J3 (4 pin) is Amp, part number 794617-4.
Mating part for J5 (12 pin) is Amp, part number 1-794617-2.
All use Amp 30 Au contacts for 20-24 AWG wires, 794606-3 (strip form), and 796410-3
(loose pieces).