4
Figure 4 illustrates an AC output application and an AC input application.
Figure 2
Pin assignments for the 37-pin D connector
Figure 3
SRA-01 electrical-isolation diagram
SRA-01 board
At 37-pin D
connector
Through I/O
modules
Between
terminal-
block
terminals
Computer circuits
Module at K1
NON-HAZARDOUS — —
Isolation A
*— — Isolated I/O — —USER-supplied wiring
|
Isolation B
**
Computer circuits
Module at K2
|
NON-HAZARDOUS — —
Isolation A
— — Isolated I/O — —USER-supplied wiring
|
Isolation B
Computer circuits
Module at K3
|
NON-HAZARDOUS — —
Isolation A
— — Isolated I/O — —USER-supplied wiring
|
•
•
•
•
•
•
•
•
•
|
Isolation B
Computer circuits
Module at K8
|
NON-HAZARDOUS — —
Isolation A
— — Isolated I/O — —USER-supplied wiring
|
Isolation B
Computer circuits
Module at K9
|
NON-HAZARDOUS — —
Isolation A
— — Isolated I/O — —USER-supplied wiring
*
Isolation A, per EN61010-1:1995, = DOUBLE INSULATION, 300V, CAT II, pollution degree 2
**
Isolation B, per EN61010-1:1995,
≥
BASIC INSULATION, 300V, CAT II, pollution degree 2
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
Top View
DIG COM
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB PORT
+5V
PC0
PC1
PC2
PC3
PC PORT
IRQ_IN
NOTE: IRQ_IN is the only valid for connections
to PIO-12, PIO-24, KPCI-PIO24, and
KPCMCIA-PIO24.