Epson EM07ZS1647F Specifications download pdf (Page 113)

4. Troubleshooting (DeviceNet)

4.1.3.3 Noise Intrusion

Verify how an error occurrence condition changes while taking the following

countermeasures.

♦ Ground of FG (DRAIN) wire

Normal Grounding: Ground the DeviceNet network at only one point.

Power Supply Tap

V+

CAN H

Shield (S)

CAN L

V-

V+

CAN H

Shield (S)

CAN L

V-

V+ V- S

V+ V- FG

Communications

power supply

24 V DC

Ground 100 Ω or less.

DeviceNet cable

Countermeasure 1: Disconnect the wire between V- and FG.

Disconnect the wire between V- and FG when you cannot ground the FG wire.

Power Supply Tap

V+

CAN H

Shield (S)

CAN L

V-

V+

CAN H

Shield (S)

CAN L

V-

V+ V- S

V+ V- FG

Communications

Power Supply

24 V DC

Ground 100

Ω or less.

DeviceNet cable

Disconnect here.

Fieldbus I/O Rev.6 101

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Epson EM07ZS1647F Specifications Page 113

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