Mircom flexnet Installation And Operation Manual page 47

Wire the ALCN-792M Quad Loop Adder module as shown in Figure 28 below.
Figure 28: ALCN-792M Quad Loop Adder Module
DIP SWITCHES ARE FOR THIS
BOARD'S ADDRESS. SW1-1
IS THE LEAST SIGNIFICANT
DIGIT (BINARY). ACTIVE
POSITION IS ON.
Green flashing
RS-485 heartbeat
LED
RS-485
OUT
RS-485
CABLE IN
POWER CABLE
(OUT)
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 34. Although these drawings show only Loop 1;Loop 2 is wired
in the same way as Loop 1 is.
Notes for ALCN-792M:
• 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.
ADDRESS
LOOP 1
DIP SWITCH
+
SW1
B
1 8
Loop 1Active LED
Loop 2 Active LED
JW2
P4
jumper is here to enable
watchdog timer.
P5
JW1
pins are momentarily
shorted to reset
hardware.
P2
FleX-Net
LOOP 2
- + - S S + - +
B
COM (-)
A
A
- normally shorted, a
- normally open,
P1
TM
Installation and Operation Manual
-
GND FAULT
POWER CABLE
(IN)
43