GE Industrial Solutions Pulsar Plus Controller - Manual (Page 113)

Pulsar Plus Controller Family
Issue 7 December 2011 113
The DIST_ALM(1, 2) EXT BAT SW(1, 2), and the EXT AUX MAJ(1, 2) alarm inputs are to be connected as
shown in Figure 22. All of these inputs alarm on a closure to VBus(-). The DIST_ALM(1, 2) alarm inputs are to
be used for monitoring US Style CBs and GMT style fuses. The EXT BAT SW(1, 2), alarm inputs are to be used
for monitoring battery disconnect switches or circuit breakers with a micro switch that closes on manual
opening of switch. The EXT AUX MAJ(1, 2) alarms may be connected to external devices with a micro switch
that closes on an alarmed state. Examples of this might be a Door Open alarm, or a Fan Fail alarm.
Since these devices all alarm on a contact closure, the protectors of the same type may have the indicating
NC terminal connected together and the C terminals connected together and connected as shown above.
This is not the case for DIN style circuit breakers, which must be individually monitored via different alarm
inputs as shown in Figure 25.
Figure 23: Alarm Connections with Reverse Polarity Protection
Figure 23 shows the connection required if Reverse Polarity Protection is to be used with the integral battery
disconnect switches LVD1_DISC or LVD2_DISC. Note that the sense lead BATT1 or BATT2 must be connected
as shown in order for the reverse polarity protection feature to work. If two strings are being used, connect
one string to STATUS1, LVD1, LVD1_COILRTN, STATUS1_RTN, BATCB1, and BATT1_SENSE connections and
the other to the "-2" connections. When more than two strings are being used, divide the strings among the
two inputs.
WARNING
When two battery strings are connected to the same battery terminal, care must be taken to ensure the
polarity of the two strings is correct to each other. Improper connection will result in one string being
shorted to the other string and the system can not protect against this.
With the above connections, the following alarms will be issued for the conditions noted.
Contactor
Fail Alarm
Contactor Open
Alarm
Open String
Alarm
Controller
LED ES772 LED
Open Integral ES772A
Disconnect Switch
X RED
Blinking
AMBER
Battery reconnected in
reverse polarity
X X RED RED
System started w/
reverse battery polarity
X X RED RED