51
5.9 Optional 125VAC Signal 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 125V.
On RTK 725B systems where 125VAC is required as a signal supply voltage this needs to be
derived externally and connected to terminals OVC and +VC as typically shown above.
IMPORTANT:- Please ensure there are no external links between the logic supply and the
signal supply input terminals i.e. OV and OVC and +V and +VC before applying the high voltage
signal supply.
LED F2 is used to indicate that the signal supply, (+VC), fuse has blown.
Fuse F2, (5 X 20mm 1A), is provided on the power input card to protect the signal supply voltage
and the 125VAC is internally linked to all associated input card *C terminals to allow distribution
to the external field contacts.
As all *C terminals are internally linked the customer can connect each input contact to a
dedicated terminal as shown in the middle cell or a single feed can be used for multiple contacts
as shown in the right hand cell.
The common return for all remote pushbuttons is +V (+24VDC).
To set the signal supply voltage on each input to 125VAC 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)”.
WR
725B SMALL WINDOW VERSION TYPICAL REAR VIEW
OV OV +V+V OVC +VC
Rx
F1 F2
Tx
CHANNEL
21
5 - 8
3C
INPUTS
4
3
1C 2C
A
4C
AP
INPUTS
CHANNEL
1 2 1C4
1 - 4
P3
P1 P2
CR1 CR2 CR3 CR4
F2 - 1A
SUPPLY VOLTAGE
EXT PB
INTERNAL SIGNAL
SUPPLY COMMON
3
CELL 2 CELL 1 CELL 0
+V
125VAC SIGNAL
To Next Page
Loading...
