48
INM 725B Rev 21
5 .6 Optional 24VDC Powered Input Wiring
Each channel on the alarm card is provided with a 3 pin header and 2 way shorting bar which
allows the user to select the inputs to operate on 24V
On standard RTK 725B systems the jumper is set to 24VDC and the user is able to power the
inputs from 3rd party devices, (PLC, DCS etc).
In these applications the user needs to connect the OV of the 3rd party device to the common
OVC as shown above and the p24VDC input can be directly connected to the associated
input terminal
The common return for all remote pushbuttons is +V (+24VDC)
To set the signal supply voltage on each input to 24VDC a drop-down menu is provided in the
Configuration Software. Selection is made under the Input tab using the drop-down menu labelled
“Field Contact Voltage (V)”
WRP
725B SMALL WINDOW VERSION TYPICAL REAR VIEW
OV
OV
+V
+V
OVC
+VC
Rx
F1
F2
Tx
CHANNEL
2
1
5 - 8
3C
INPUTS
4
3
1C
2C
A
4C
A
INPUTS
CHANNEL
3
1
2
1C
4
1 - 4
4C
2C 3C
CC
CC
CC
CC
CR1
CR2
CR3
CR4
CELL 1
CELL 0
+24VDC POWERED INPUTS
+24VDC POWERED INPUTS
COMMON OV
REFERENCE
CELL 2
P1
P5
P3
P2
P4
P6
+V