Indoor Panel-To-Panel Wiring; D.2.1 Panel-To-Panel Cable Connections - YASKAWA MP920 User Manual

Appendix D Wiring Communications

D.2.1 Panel-to-Panel Cable Connections

D.2

Indoor Panel-to-Panel Wiring

D.2.1 Panel-to-Panel Cable Connections
75Ω
215IF Panel-to-Panel Cable Connections
The following figure shows a 215IF panel-to-panel cable connection example.
SRD SRD Es
+ - + -
Shielded ground trunk cable: 8 mm
Fig. D.9 215IF Panel-to-Panel Cable Connection Example
• Connecting Signal Lines
Use panel-to-panel cables to connect the incoming and outgoing SRD+ and SRD- signal
terminals on each control panel as shown in the above figure.
• Connecting Terminating Resistances
Mount 75Ω terminating resistances at both ends of the transmission line.
• Connecting Shielded Ground Trunk Cables
Connect the Es terminals of each control panel using daisy chain connections.
Use a shielded ground trunk cable of 8 mm
Using a ground wire of 8 mm
independent ground pole with a ground resistance of 100Ω or less.
SRD Es SRD
+ - + -
2
8 mm
Panel-to-panel cable
2
2
or greater.
2
or greater, ground the shielded ground trunk cable to an
D-14
SRD Es E SRD
+ - + -
75Ω
2
8 mm
Independent ground pole:
100Ω or less