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Intelligent Technologies (IT.) D77A I/O Module Products
8 For more information visit: www.EatonElectrical.com
MN05002001E
Input Specifications
AC Input Module Specifications
Table 13: AC Input Module Specifications
* A 50V transition range exists between 30V and 80V.
Figure 3: AC Input Module Diagrams
a) D77A-AI8, Eight-Point Module
b) D77A-AI16, Sixteen-Point Module
c) Internal Circuit
Catalog Number D77A-AI8 D77A-AI16
Nominal Input Voltage 120V AC, 50/60 Hz 120V AC, 50/60 Hz
Operating Voltage 80 – 140V AC, 50/60 Hz 80 – 140V AC, 50/60 Hz
Number of Inputs 8 16
Points per Common 2 2
OFF State Voltage 0 – 30V AC * 0 – 30V AC *
ON State Voltage 80V AC – 140V AC 80V AC – 140V AC
Nominal Input Current 15 mA 15 mA
Signal Delay 8.33 ms @ 60 Hz / 10 ms @ 50 Hz 8.33 ms @ 60 Hz / 10 ms @ 50 Hz
QCPort Current Draw 33 mA 46 mA
Isolation 1.5kV 1.5kV
Terminal Screw Torque 4.5 inch-pounds
(0.51 Newton-meters)
4.5 inch-pounds
(0.51 Newton-meters)
COM
IN
IN
Ø
1
CØ
2
3
C1
4
5
C2
6
7
C3
VAC
VAC
VAC
VAC
Ø
1
CØ
2
3
C1
4
5
C2
6
7
C3
VAC VAC
VAC VAC
VAC VAC
VAC
VAC
8
9
C4
10
11
C5
12
13
C6
14
15
C7
a
b
c
D77A-006