Mircom FleX-Net FX-2003-12NDS Installation And Operation Manual page 44

Mounting holes, terminals for wiring, cable connections and jumper locations on the ALCN-792MISO Quad Loop
Adder module are shown in Figure 26 below.
Figure 26: ALCN-792MI SO Quad Loop Adder Module
Green flashing
RS-485 heartbeat
LED
RS-485
JW1 - leave open
JW2 - leave closed
Green flashing
heartbeat LED for on
board processor
POWER CABLE
Wiring The Addressable Loops
There are two addressable loops present on this board that are wired in the same manner as shown in
the wiring diagrams beginning with Figure 32. Although these drawings show only Loop 1; Loop 2 is
wired in the same way as Loop 1 is.
Notes for ALCN-792MI SO:
• All circuits are power limited and must use type FPL, FPLR, or FPLP power limited cable.
• Loop wiring: maximum loop resistance is 40 ohms total. These lines power-limited and fully supervised.
42
LOOP 1
+ -
B
RS-485
OUT
P3
Loop 1
Active LED
IN
P4
JW6
JTag
Port
DIP SWITCHES ARE FOR THIS
1
ADDRESS
BOARD'S ADDRESS. SW1-1
DIP SWITCH
IS THE LEAST SIGNIFICANT
8
DIGIT (BINARY). ACTIVE
SW1
POSITION IS ON.
(OUT)
P2 P1
SHIELD
NOT USED
LOOP 2
S S + - + -
+ - ALARM OUT
B
COM (-)
A
A
Loop 2
Active LED
JW3
Daughter Board
Connector
P6
POWER CABLE
(IN)
USB PORT
(Factory use only)
JW4
Four shaded
mounting holes are
for Daughter board
ALCN-792D
Top 2 holes and
bottom 2 holes are
used for the ALCN-
792MISO Quad Loop
Adder module
mounting