P/N 3101773-
EN • REV 04 • ISS 05AUG13
7 / 8
Figure 13: Power-limited and nonpower-limited wiring
(1) Nonpower-limited wiring area
(2) Power-limited wiring area
(3) Battery area
LED indicators
The SFS1-CPU main board provides several LEDs that
indicate activity on a communication path. See Figure
14
for
the LED locations on the main board and Table 2 for LED
descriptions.
Figure 14: SFS1-CPU LEDs
Table 2: SFS1-CPU LED descriptions
LED
Descriptions
DS1
Option card RX activity
DS2
Option card TX activity
DS7
Loop 1 Class A activity
DS8
Loop 2 Class A activity
DS9
Network data RX Class B activity
DS10
Network data TX Class B activity
DS11
Network data RX Class A activity
DS12
Network data TX Class A activity
DS13
Loop 1 Class B activity
DS14
Loop 2 Class B activity
DS15
Remote annunciator data right TX activity
DS16
Remote annunciator data right RX activity
DS17
Remote annunciator data left TX activity
DS18
Remote annunciator data left RX activity
DS19
Ethernet link activity
DS20
Ethernet collision activity
Specifications
Voltage
24 VDC
Current
Standby
Alarm
115 mA
115 mA
Common relays
Quantity
Type
Rating
3 (alarm, supervisory, trouble)
Form C
30 VDC at 1
.0 A, 1.0 PF
AUX power output
Type
Voltage
Current
Regulated and power
-limited
24 VDC
nom., continuous or resettable
1.0 A each circuit, 1.0 A total
RS
-232 circuit
Baud rate
Length
Resistance
Capacitance
1200 to 9600
20 ft. (6 m) max.
13 Ω max.
0.7 µF max.
Remote annunciator circuit
Wire type
Length
Resistance
Capacitance
Compatible devices
Twisted-pair, 6 twists/ft. min.
4,000 ft. (1,219 m) max.
90 Ω max.
0.3 µF max.
RLCD
-
C, RLCD, RLED
-
C, GCI
RS
-
485 network
communication
See the
3X-NET8 RS-485 Network Option
Card Installation Sheet
(P/N 3101768-ML)
or
3X-NET RS-485 Network Option Card
Installation Sheet
(P/N 3101771-ML)
Fiber optic network
communication
See the
3X-FIB8 Fiber Network Option
Module Installation Sheet
(P/N 3101769
-ML) or
3X-FIB Fiber
Network Option Module Installation Sheet
(P/N 3101971
-ML)
Ethernet communication
See the
3X-ETH1 Ethernet Adapter Card
Installation Sheet
(P/N 3101775
-ML)