Intelligent Technologies (IT.) D77A I/O Module Products
MN05002001E For more information visit: www.EatonElectrical.com 21
Table 23: D77A-AI8RQ8 Combination Module Specifications

* A 60V transition range exists between 80V and 140V.

Figure 15: D77A-AI8RQ8 Combination Module Diagrams
a) D77A-AI8RQ8 Module
b) Internal DC Input Circuit
c) Internal Relay Output Circuit
Catalog Number
D77A-AI8RQ8
AC Input Relay Output
Nominal Voltage 120V AC, 50/60 Hz —
Operating Voltage 80-140V AC 0-140V AC
0-30V DC
Number of Points 8 8
Points per Common 2 2
Signal Delay 5 ms —
OFF State Voltage 0-80V AC* —
ON State Voltage 180V-140V AC —
Maximum Load Current (Resistive) 15 mA —
Signal Delay 8.33 ms @ 60 Hz
10 ms @ 50 Hz Relay ON Time 3 ms
Relay OFF Time 6 ms
Max. Current/Point (Resistive) — 3A
Max. Current/Module (Resistive) — 24A
Mechanical Life — 1,000,0 00 Operations
Electrical Life — 100,000 Operations
QCPort Current Draw 104 mA
Isolation 1.5kV
Terminal Screw Torque 4.5 inch-pounds (0.51 Newton-meters)
Ø
1
CØ
2
3
C1
4
5
C2
6
7
C3
AC
AC
AC
AC
D77A-030
abc
COM
IN
IN
OUT
OUT
C
CR
CR
VAC/DC
VAC/DC
VAC/DC
VAC/DC
Ø
1
C4
2
3
C5
4
5
C6
6
7
C7
CR
CR
CR
CR
CR
CR