Omron CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1 Connecting the Shield Line, Terminal Block Connections

Wiring Section 3-3

3.Do not connect the shield cable of the communications cable to a ground that is also being used for power-system devices, such as inverters.

4.Ground the shield line of the communications cable at one end of the net- work. Do not ground the shield at both ends.

5.Do not run wiring outdoors. If outdoor wiring is necessary, take protective measures against lightning, such as underground wiring or wiring inside pipes.

6.The minimum length of the communications cable between nodes is 1 m. Prepare the communications cables at a length of 1 m or more.

7.Use the multidrop method for connecting nodes. Normal communications will not be possible with T branches.

8.Turn ON the terminating resistance switch at the nodes at both ends of the network to connect terminating resistance. Turn OFF the terminating resis- tance switch at all other nodes.

9.A label has been placed over the upper surface of the Controller Link Unit to prevent scraps of wire from entering the Unit. Conduct wiring and instal- lation with this label in place. If wire scraps get into the Unit, it will malfunc- tion (C200HW-CLK21, CS1W-CLK21-V1, CJ1W-CLK21-V1, and CQM1H- CLK21 only).

10.Remove the label after wiring to avoid overheating. Overheating will cause the Unit to malfunction (C200HW-CLK21, CS1W-CLK21-V1, CJ1W- CLK21-V1, and CQM1H-CLK21 only).

Connecting the Shield Line

Connect both ends of the shield line to the terminal blocks and earth the ter- minal block at the one end of the network.

BD H g

BD L #

SHLD

Terminal Block Connections

Not Unit a Relay Terminal Block

		CVM1-CLK21			CS1W-CLK21-V1
C200HW-CLK21					CJ1W-CLK21-V1
					(End node)
(End node)	Terminating				Terminating	↓
			↓	TER SW			TER SW
	resistance		ON		resistance	ON
	(OFF)				(ON)

BD H BD H BD H

BD L		BD L	BD L
SHLD	TER	SHLD	SHLD
	SW

Terminating

↓

resistance ON (ON)

Ground

Note Use the recommended crimp terminals when connecting the cable’s signal lines or shield line to the terminal blocks. Short circuits can damage the Units.

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