Emerson 851-1000, Инструкция по установке и эксплуатации

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Location and Wiring Installation • 5
4. Connect the PMAC II panel 8DO board to the
existing RMCC or BEC COM A or COM D
network, as shown in
Figure 2-5 , using a
Belden #8761 (two-conductor, shielded,
22AWG) or equivalent communication ca-
ble.
2.1.1. PMAC II Field Wiring
1. Provide 120VAC (15 amps circuit) to the
PMAC terminal block through a store circuit
breaker. Wire 120VAC Hot , 120 VAC Neu-
tral , and Ground as indicated by the Step 1
arrows of Figure 2-5 for the 16 Channel, Fig-
ure 2-6 for the 20 Channel, and Figure 2-7
for the 28 Channel.
2. A normally closed alarm contact is provided
on the terminal strip as indicated by the Step
2 arrows of Figure 2-5 for the 16 Channel,
Figure 2-6 for the 20 Channel, and Figure 2-
7 for the 28 Channel.
3. Step 3 of Figure 2-5 for the 16 Channel, Fig-
ure 2-6 for the 20 Channel, and Figure 2-7
for the 28 Channel indicates the terminal
block positions to wire the
Emerson
485 I/O
Network. Polarity must be respected while
mak-ing these connections.
2.1.1.1. Single Channel Expansion Ports
The 20 Channel PMAC has two expansion ports (Fig-
ure 2-6) , and the 28 Channel PMAC has six single expan-
sion ports (Figure 2-7) . These expansion ports can be used
to attach single channel PMACs if desired ( P/N 851-1010 ).
NOTE: When running power to the case heat-
ers, include the neutral lead in the same con-
duit as the hot lead to prevent conduit
overheating.
Figure 2-5 - Wiring Detail for 16 Channel
Figure 2-6 - Wiring Detail for 20 Channel
120 HO
T
12
0
NE
UTR
AL
R
S 48
5+
OV
RS
48
5-
GR
OUND
AL
AR
M
ALA
R
M
TO
E
A
RT
H
GR
O
UN
D
Step 1 Step 3
Step 2
H
u
m
id
ity
+
1
2V
G
ro
u
n
d
H
i T
em
p
A
la
rm
N
C
1
20
V
A
C
N
eu
tra
l
1
20
V
A
C
H
o
t
C
O
M
4
8
5
b
la
c
k -
C
O
M
4
8
5
w
h
ite
+
H
i T
e
m
p
A
la
rm
N
C
C
O
M
4
85
sh
ie
ld
E
xp
B
1
2V
D
C
+
E
xp
B
1
2V
D
C
-
E
xp
A
1
2V
D
C
-
E
xp
A
1
2V
D
C
+
St 1
St 2 S
Expansion Ports x 2
Figure 2-7 - Wiring Detail for 28 Channel
S
C
-P
M
A
C
#
5
+
S
C
-P
M
A
C
#
5
-
S
C
-P
M
A
C
#
4
-
S
C
-P
M
A
C
#
4
+
S
C
-P
M
A
C
#
3
+
S
C
-P
M
A
C
#
3
-
S
C
-P
M
A
C
#
2
+
A
la
rm
A
la
rm
G
ro
u
n
d
1
20
V
A
C
N
e
u
tra
l
C
O
M
4
8
5
s
h
ie
ld
C
O
M
4
85
w
h
ite
+
S
C
-P
M
A
C
#
1
+
C
O
M
4
8
5
b
la
c
k
-
S
C
-P
M
A
C
#
2
-
S
C
-P
M
A
C
#
1
-
S
C
-P
M
A
C
#
6
+
S
C
-P
M
A
C
#
6
-
F
U
S
E
12
0V
A
C
H
O
T
Step 1
Step 3 Step 2
Expansion Ports x 6