63
Wiring and Connections
Section 3-5
Inductive Loads
When connecting an inductive load to an input, connect a diode in parallel
with the load. The diode should satisfy the following requirements:
1,2,3...
1.
Peak reverse-breakdown voltage must be at least 3 times the load voltage.
2.
Average rectified current must be 1 A.
3-5-4
Output Wiring
Relay Output Wiring
Wire the outputs to the CPM2B’s CPU Board and Expansion I/O Boards as
shown in the following diagrams.
Don’t exceed the output capacity or the maximum common current. Refer to
2-1-3 I/O Specifications for details.
!WARNING
The PLC outputs may remain ON or OFF due to fusing or burning of the out-
put relays or destruction of the output transistors. External safety measures
must be provided to ensure safety in the system. Not providing proper safety
measures may result in serious accidents.
CPU Boards with 32 I/O Points and Relay Outputs (CPM2B-32C
@
DR-D)
CPU Boards with 40 I/O Points and Relay Outputs (CPM2B-40C2DR-D)
IN
COM
CPM2B
Diode
Output capacity
Max. common capacity
2 A (250 V AC or 24 V DC)
4 A/common
Output capacity
Max. common capacity
2 A (250 V AC or 24 V DC)
4 A/common
Terminal Block #1
(Left side)
Terminal Block #2
(Right side)
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
01000
01001
01002
01003
COM
01004
01005
01006
01007
COM
01100
01101
01102
01103
COM
01104
01105
01106
01107
COM
Terminal
Block #1
(Left side)
Terminal
Block #2
(Right side)
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