SMS SenTRI2, Installation Instructions Manual, Page: 25 / 44

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
NETWORK 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 RTS 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.