Wiring Compobus/S Transmission Lines - Omron CPM2C-S100C Operation Manual

Wiring and Connections
3-4-7

Wiring CompoBus/S Transmission Lines

1,2,3...
The surge protector's components should have the following ratings:
Transistor Output
(Sinking)
OUT
CPM2C-S
COM
Transistor Output
(Sourcing)
OUT
CPM2C-S
COM
The diode should satisfy the following requirements:
Peak reverse-breakdown voltage must be at least 3 times the load voltage.
Average rectified current must be 1 A.
Inrush Current Considerations
When a CPM2C-S transistor output is used to switch a load with a high inrush
current such as an incandescent lamp, suppress the inrush current as shown
below.
Countermeasure 1
OUT
R
COM
Providing a dark current of
approx. one-third of the rated
value through an incandescent
lamp
Fuse Insertion
The CPM2C-S with transistor output may burn if the load is short-circuited,
therefore, insert a protective fuse in series to the load.
Use special flat cable or VCTF cable for the transmission lines that connect
the nodes in the CompoBus/S I/O Link. (Special flat cables, 2-core VCTF
cables, and 4-core VCTF cables cannot be used in the same system. Use
only one type of cable in the same system.)
Name Model number
Special Flat cable SCA1-4F10
VCTF cable ---
Use the following procedure to wire the CompoBus/S communications cables.
1. Strip off the length of wire insulation recommended for the crimp connec-
tors being used and tightly twist the bare wire strands together.
Diode
Diode
Countermeasure 2
R
OUT
COM
Providing a limiting resistor
Specifications
Special flat cable, 0.75 mm
VCTF cable according to JIS C3306,
2 × 2 cores or 0.75 mm
0.75 mm
Section 3-4
2 × 4 cores
2 × 4 cores
75