Page 142
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Figure 12
-
4 shows the connections required if Reverse Polarity Protection is to be used with an external
disconnect switch. Note that the sense lead BATT1_SENSE or BATT2_SENSE 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_COIL, 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
QS840A 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
Figure 12
-
4: Reverse Polarity Protected Alarm Connections with an External Battery Disconnect Switch
BATT 1_SENCE (J1 Pin 5) or
BATT 2 SENCE (J3 Pin 1)
LVD 1_COIL (J1 Pin 12 ) or LVD
2_COIL 2 RNT (J3 Pin 4)
STATUS 1 (J1 PIN 10 ) or
STATUS 2 (J3 Pin 3)
STATUS 1 RTN (J1 Pin 9) or
STATUS 2 RTN (J3 Pin 2)
EXT BAT SW 1 (J1 Pin 7) or
EXT BAT SW 2(J1 Pin 14
VBUS (+)
LVBD
Contactor
VBUS (+)
Load
Summary of Contents for CPS6000
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