Emerson E2 Installation And Operation Manual page 57

1.Connect the I/O or MODBUS Network to one or both of the E2
RS485 I/O or MODBUS Network ports. (A maximum of 31 devices
can be wired to each I/O or MODBUS Network port.)
2. For each I/O or MODBUS Network port, set RS485 termination
jumpers UP if at either end of a daisy chain. Otherwise, set jumpers
DOWN.
3. Connect the E2 to the Echelon Network. If possible, connect shield
wires to a separate earth ground outside of the E2 enclosure.
4. Set the Echelon Network jumper UP (Terminated) if the E2 is
at either end of an Echelon daisy-chain. Otherwise, set the jumper
DOWN (Not Terminated).
5. Connect earth ground to one of the two ground terminals
provided. Use 12 AWG (preferred) or 14 AWG wire and keep as
short as possible (less than 12 inches preferred).
6. Connect 24VAC to the power terminals.
7. Flip the power switch to the ON position. When 24VAC has been
applied to the board, the green LED will illuminate.
RS485 I/O or MODBUS Net
NOT TERMINATED
4
6
Battery Testing and Replacement
3
LON
TERMINATED
LON
Echelon
JP7
TERMINATED
JP7
NOT TERMINATED
AC1
24VAC
AC2
7
6
I/O or MODBUS Network
+
Echelon
Level IV, 22 AWG, Shielded
Max Daisy Chain Length:
Feet: 4592
SHIELD
P/N 135-2300 Non-Plenum
(1 Pair, 1000 Feet)
P/N 135-2301 Plenum
(1 Pair, 1000 Feet)
12 or 14 AWG
_
0V
TO OTHER
RS485
DEVICES
OBSERVE WIRE
COLOR POLARITY
Earth
Ground
Meters: 1400
Earth
Ground
Connector
AC1
24VAC
AC2
•
E2 Hardware Setup
-
4 7