,QVWDOOLQJ WKH &KDUJHU
Configuring the Charger
12
ADT-CHG-120 Instruction 05/01/98 PN 50938:A
&RQILJXULQJWKH&KDUJHU
You can configure the charger to do the following:
•
Set the charger input power (see Figure 3 on page 5).
•
Delay AC loss reporting (for Central Station applications); and
•
Disable charger ground fault detection.
Figure 11 shows how to configure the charger for delaying the loss of AC reporting and for
disabling ground fault detection:
Figure 11 Configuring the Charger
'HOD\ ORVV RI $& 5HSRUWLQJ If using a Digital Alarm Communicator (DACT), you must
delay the reporting of an AC loss condition to a central station. This delays activation of the
trouble bus and Form-C trouble contacts when AC fails. You can configure the charger for
an 8-hour or a 16-hour delay as follows:
•
8-hour delay – Cut and remove jumper JP8 on the charger (Figure 11).
•
16-hour delay – Cut jumper JP8; then, cut and remove resistor R100 (Figure 11).
'LVDEOH *URXQG )DXOW 'HWHFWLRQ To disable local (charger) earth fault detection, cut and
remove resistor R104 (Figure 11). Figure 12 contains a simplified block diagram that
shows ground fault detection disabled on a charger connected to multiple power supplies:
Figure 12 Disabling Ground Fault Detection
'HOD\ ORVV RI $& KUV
FXW DQG UHPRYH 5 LQ
DGGLWLRQ WR FXWWLQJ -3
'LVDEOH JURXQG IDXOW GHWHFWLRQ
FXW DQG UHPRYH 5
'HOD\ ORVV RI $& KUV FXW
-3
2Q WKH FKDUJHU
GLVDEOH JURXQG IDXOW
GHWHFWLRQ FXW 5
&KDUJHU
036
2Q 036 DQG
GLVDEOH JURXQG IDXOW
GHWHFWLRQ FXW -3
036
036
2Q 036
HQDEOH JURXQG IDXOW
GHWHFWLRQ GR QRW FXW
-3
