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Emerson MRLDS Especificaciones Pagina 14

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8 • MRLDS I&O Manual 026-1307 Rev 4 28-JUN-2011
5MRLDS Gateway
Version (809-101x)
5.1 Network Layout
5.2 MRLDS Setup
5.2.1 MRLDS Wiring
5.2.2 MRLDS Network Addressing
Modbus network settings are set on jumpers J5, J4,
and J3. Refer to Table 5-1 (also included on the inside
label of the MRLDS) for network addressing with corre-
sponding jumper settings.
If more than one MRLDS is on the network, each unit
must have a unique address and be numbered according to
the inside label (Table 5-1) specifications.
Figure 5-1
- Network Layout Example
Figure 5-2 - Modbus MRLDS Wiring
E2
Gateway
MRLDS
MRLDS
MRLDS
MRLDS
I/O Net
+
-
+
-
-
-
-
-
+
+
+
+
MODBUS
(Up to 12 MRLDS
units on the network
per Gateway)
R
S
4
8
5
(
+
)
R
S
4
8
5
(
-
)
A
C
N
2
4
V
A
C
MRLDS - INSIDE LOWER
PORTION OF BASE
E
A
R
T
H
G
N
D
Shield
drain/ground
wire
MODBUS
NETWORK
To Gateway
Board
A transformer must
be shared
between MRLDS
and the Gateway
board. A
must
be used.
If a transformer is
shared between
MRLDS units,
the “ACN” of
each MRLDS
must be wired
to the same
phase of the
transformer.
never
separate
transformer
MODBUS
BELDEN
8761
14 AWG less
than 6 inches
Figure 5-3 - MRLDS Jumpers (Inside Lower Portion of Cover)
J6
J5J4 J3
J2 J1
refrigerant
type
jumpers
network
address
jumpers
term
jumper
J6
J1
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