Intelligent Technologies (
IT.
) D77A I/O Module Products
MN05002001E
For more information visit: www.EatonElectrical.com
39
Analog Inputs
Analog signals are typically used to transmit or indicate linear data like temperature, pressure or flow, as illustrated in
Figure 37
. The
analog input devices to which analog inputs are wired are typically current loop or voltage range devices like 4-20 mA transmitters or
0-10V transmitters. Refer to
Analog Input Module Specifications on page 10
for module details.
Note:
Ground the shield on one end only. It is recommended to limit the cable impedance by keeping the cable length as short as
possible. Limiting the distance from ground to the shield is also recommended. The recommended cable is a Belden
TM
8761 or
equivalent.
Note:
When an input channel in not used, jumper from V to C eliminating noise from causing erroneous readings for that channel.
Figure 37: Analog Input Wiring
a) Input Module
b) Jumper
c) Shield (Ground One End Only)
d) Current Input Device
e) Voltage Input Device
f) Shield (Ground One End Only)
Wire Type
Wire
S
ize
Termin
a
l Torq
u
e
S
olid C
u
-90°C
#14 - # 22 AWG
4.5 in-l
bs
S
tr
a
nded C
u
-90°C
#16 - # 22 AWG
4.5 in-l
bs
1
2
3
4
5
6
7
8
I0
C0
V1
I1
C1
V2
I2
C2
V3
I3
C3
9
10
11
12
-
+
JIC-0012
V0
I
V
a
c
d
e
f
b
Summary of Contents for D77A
Page 2: ......
