EXCEL 10 W7761A INPUT/OUTPUT DEVICE
27
74-2699
1
E-B
1
2
3
4
5
6
7
8
W 7 761 A
RE M O T E I/O
DE V IC E
EAR
T
H
GR
O
U
N
D
9
10
1 1
1 2
14
1 5
3 1
30
2 9
2 8
27
26
2 5
24
23
22
2 1
20
GR
O
U
N
D
E-BUS
E-
BU
S
JA
C
K
22
V
D
C
O
U
T
19
18
1 7
1 6
GR
OU
N
D
13
GR
O
U
N
D
J3
GR
O
U
N
D
GR
OU
N
D
TRI AC EQUIV AL ENT CIRCUIT
AI
-3
O
H
M
OU
T
7
OU
T
6
OU
T
5
OU
T
4
OU
T
8
OU
T
1
OU
T
3
OU
T
2
AI
-5
V
/m
A
DI
-2
DI
-4
DI
-1
DI
-3
AI
-4
O
H
M
AI
-6
V/
m
A
AI
-2
OH
M
AI
-
1
O
H
M
NOT
US ED
CO
M
2
4
VAC
24
V
A
C
EARTH G ROUND WIRE LENGTH SHOULD BE HE LD TO A MINIMUM .
USE THE HEA VIE ST GAUG E WIR E A VAI LAB LE, UP TO 14 A WG (2.O MM
2
)
WITH A M INIM UM OF 1 8 A WG (1 .O M M
2
), F OR EAR TH GROUND WIRE .
TO ASSURE PROP ER EL ECTRICA L CONTACT, WIRES M US T BE TWIS TED
TOG ETHER BEFO RE INS ERTI ON INTO THE TERM INAL B LOCK.
1
2
+
-
2 4 VA C
2
+
S
C 7 6 0 0 C
+
S
C 7 4 0 0 A
Enthalpy
(4 to 20mA)
Humidity
(4 to 20mA)
Fig. 17. Typical Humidity and Enthalpy (4 to 20mA) sensor wiring diagram. (For note 2, refer to Fig. 15.)
