GE Industrial Solutions Pulsar Plus Controller - Manual (Page 110)

Pulsar Plus Controller Family
Issue 7 December 2011 110
LEDs: *= On
Green Amber Red Condition
* Normal
* Minor Alarm
* Major Alarm
Flashing
External Contactor(s) Manually Opened with
either LVD1 or LVD2 DISC SW
Flashing Communication Loss with System Controller
Flash
(5 sec)
*
Manual Reconnect Command Accepting
The ES772A is referenced to VBus(-), therefore, all alarm inputs are either alarmed on an open or a closure
to VBus(-) as described in the following.
Module Features
The ES772A module has the following features:
• 16 Alarm inputs. These inputs may be used to monitor for distribution circuit breakers with micro-
switch closures for protector opening, GMT style fuses with or DIN style circuit breakers. Furthermore,
the two Auxiliary Major alarms may be used to monitor micro-switch closures from other devices such
as a fan or a door, etc.
The alarming states for the different inputs are as stated below:
° 10 inputs to alarm or an open to VBus(-) for DIN style circuit breakers (J5 pins 1-10)
° 2 inputs to alarm on closure to VBus(-) for Auxiliary Major alarming from external source (J5 pins
11 and 12)
° 2 inputs to alarm upon closure to VBus(-), for distribution protector open alarms (J1 pins 6 and 13)
° 2 inputs to alarm upon closure to VBus(-) for battery circuit breaker open alarms (J1 pins 7 and 14)
• (2) LVBD or LVLD Contactor Manual Disconnect Switches are provided. These switches allows users to
manually open up to two external contactors to disconnect a battery string from the V(-) bus and
allow the user to perform maintenance on the battery. The switches can also disconnect a load from
the V(-) bus if the contactor is configured for load disconnect. The contactors are treated as one type
of contactor. That is both contactors are either LVBD or LVLD type.
• Reverse Battery Protection. If wired as instructed in Fig. 9-2 or 9-3, the ES772A will prevent the
closure of contactors with batteries that are wired in reverse polarity. It will be active during initial
start-up and also during servicing if the integral battery disconnect switches are used to connect and
disconnect the battery strings from the V(-) bus. If the battery strings are wired in reverse polarity and
an attempt was made to close the contactor, the ES772A will disconnect all contactors and
appropriate alarms will be transmitted.
If an external disconnect switch is used to take battery strings off-line for servicing, care must be taken
to ensure battery connections are correct at the disconnect switch. This is because the contactors
remain closed when an external disconnect switch is used to disconnect the batteries from the bus. If
the batteries are reconnected in reverse polarity, closing the switch will result in the batteries being
connected to the bus in reverse polarity. If the external disconnect switch is connected as shown in Fig