Technical data

February 2007
42
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PLC, I/O & Communications Products
IT. Connect
Remote I/O Modules (D77A Series)
DC Input Modules — D77A-DI8, D77A-DI16
Table 50. Specifications
Table 51. Operating Voltage Range — DC Input Modules
Figure 48. Wiring Diagram — DC Input Modules, D77A-DI8 &
D77A-DI16
Figure 49. Circuit Diagram — DC Input Modules, D77A-DI8 &
D77A-DI16
DC Output Modules — D77A-DQ8, D77A-DQ16
Table 52. Specifications
Table 53. Operating Voltage Range — DC Output
Figure 50. Wiring Diagram — DC Output Modules, D77A-DQ8 &
D77A-DQ16
Figure 51. Circuit Diagram — DC Output Modules, D77A-DQ8 &
D77A-DQ16
Description Specification
Nominal Input Voltage
Operating Voltage
24V DC
18 – 30V DC
Number of Inputs 8 (D77A-DI8)
16 (D77A-DI16)
Points per Common 2
Signal Delay 5 mS (Programmable to 250 mS)
OFF-State Voltage < 6V DC
ON-State Voltage > 18V DC
Nominal Input Current 5 mA
Isolation 1500V
Module Current Draw 35 mA (D77A-DI8)
49 mA (D77A-DI16)
Terminal Screw Torque 7 – 9 in-lb
OFF State Transition Region ON State
0 6V DC 6V DC 18V DC 18V DC 30V DC
8
9
C4
10
11
C5
12
13
C6
14
15
C7
0
1
C0
2
3
C1
4
5
C2
6
7
C3
V DC
V DC
V DC
V DC
V DC
V DC
V DC
V DC
In
In
Com
Description Specification
Nominal Input Voltage 24V DC
Type MQSFET sink
Operating Voltage 18 – 30V DC
Number of Outputs 8 (D77A-DQ8)
16 (D77A-DQ16)
Points per Common 4
Signal Delay 1 mS
Maximum Current/Point .75A
Current per Module 6A (D77D-DQ8)
12A (D77D-DQ16)
Surge Current (10 ms) 4A
OFF-State Leakage 1 mA
Module Current Draw 85 mA (D77A-DQ8)
126 mA (D77A-DQ16)
Terminal Screw Torque 7 – 9 in-lb
Transition Region ON State
0 18V DC 18V DC 30V DC
8CR
9
10
11
–
––
+
–
+
V DC
12
13
14
15
++
0
1
2
3
4
5
6
7
CR
CR
CR
COM
CR
V DC
CR
CR
CR
COM
CR
V DC
CR
CR
CR
COM
CR
V DC
CR
CR
CR
COM
Out
Out
+24
C