Ground Wiring - Hitachi SV.LINK User Manual

3 MOUNTING AND WIRING

3.3 Ground Wiring

Perform ground wiring as described below.
• Ground wiring example for 10BASE-5
Ground wiring for 10BASE-T (Do not perform wiring to the FG terminal of the SV.LINK
module.)
For communication using the 10BASE-5, perform class D grounding for the FG
terminal of the SV.LINK module through the FG terminal of the mount base.
Use a ground wire with a wire diameter of 2 mm
While the power supply is ON, do not touch the 10BASE-5 connector. The
system may malfunction due to static electricity.
(*) Class D grounding is defined in the Technical Standard for Electrical Facilities of Japan.
This standard states that the grounding resistance must be 100 ohms or less for equipment
operating on 300 VAC or less, and 500 ohms or less for devices that shut down
automatically within 0.5 seconds when shorting occurs in low tension lines.
10BASE
-5
10BASE
-T
12 VDC
10BASE
-5
10BASE
-T
2mm
NOTICE
3-4
2
2mm or more
Class D grounding (*)
2
or more
Class D grounding
2
or more.