25
SenTRI4 fire system
Terminals for external circuits
The Terminal card holds all the terminals for the connection of external circuits. The
exceptions are:
terminals for CARDS in slots P7 and P8, these are located on the Backplane
terminals for mains supply, these are located on PSU
terminals for batteries, these are also optionally located on the PSU.
CARD 4
LOOP 4
L1 0V L2 0V
CARD 3
LOOP 3
L1 0V L2 0V
CARD 2
LOOP 2
L1 0V L2 0V
CARD 1
LOOP 1
L1 0V L2 0V
RS485
A 5V B 0V
RS232
Tx CTS Rx RTS
(WITH IO CARD IN SLOT P2 OF BACKPLANE)
P4
MA1+ MA1- MA2+ MA2-
Master alarm
P5
Clean C
NC C NO
P6
Auxiliary Relay 1
NC C NO NC C NO
P7
Auxiliary Relay 2
NC C NO NC C NO
P8
RS232 0V
0V 0V 0V 0V
P12
Terminal card
P2
P3
0V1 +VE1 -VE1 0V2
N/C N/C +VE2 -VE2
(WITH NETWORK CARD IN SLOT P2 OF BACKPLANE)
PB1
PB2
Backplane
NETWOR K CARD IN SLOT P8
0V1 +VE1 -VE1 0V2 N/C +VE2 -VE2 N/C
IO CARD IN SLOT P8
A 5V B 0V CTS Rx R TS TX
IO (RS232) CARD IN SLOT P7
N/C 0V CTS RX RTS TX
Quick release terminals
P2
L
N
PSU board (located behind the cardboard cover)
These RS232 0V terminals
are for use with the RS232
wiring associated with IOC
fitted in Card slots 1 to 4.
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