RFL 9780 RFL Electronics Inc.
April 8, 2003 17-45 (973) 334-3100
17.6 ALARM RELAY I/O MODULE
Figure 17-19. Alarm Relay I/O module, rear panel view
17.6.1 DESCRIPTION
The Alarm Relay I/O module (106465) provides four electro-mechanical relay outputs. Each output is
used to indicate a factory pre-defined alarm condition. The alarm outputs available depend upon the
type of system available (See Table 17-12 below). Each electro-mechanical output has N.O and N.C.
connections at the terminal block. All signals to and from the Alarm Relay I/O module interface
directly with various modules within the system.
User configuration is not required for this I/O module.
The Alarm Relay I/O is used in all standard TX/RX and RX only applications. It can also be used for
customer specific applications and can be mounted in an expansion chassis.
Table 17-12. Alarm Outputs
SYSTEM ALARM CIRCUIT #1 ALARM CIRCUIT #2 ALARM CIRCUIT #3 ALARM CIRCUIT #4
TX/RX POWER FAIL TX FAIL LOGIC FAIL LOW LEVEL
RX/RX POWER FAIL SPARE LOGIC FAIL LOW LEVEL
RX only POWER FAIL SPSRE LOGIC FAIL LOW LEVEL
LARM RELA
1 C
2 N
3 N
4 C
5 N
6 N
C
NO LOGIC FAIL
NC
C
NO LOW LEV
NC
C
POWER FAIL NO
NC
C
TX FAIL NO
NC
C 1
O 2
NC 3
C 4
O 5
NC 6