2-15
• Use a ground board as shown in the diagram and ground (FG) each Unit to one point on the ground
board.
• Do not bundle the ground together with the power supply, motor drive, or Resolver signal wires or run
the ground through the same duct as these wires.
• If using metal conduit or running wires through metal duct, ground the metal to one point.
Note To make the 3F88L-160/162 Cam Positioner conform to EC Directives, be sure to install the Unit
within a control panel.
D External Wiring
• Use a different cable for the Cam Positioner I/O and the control wire. Do not run these wires through
the same cable.
• It is recommended that the Cam Positioner cables and other control and power cables are wired as
shown below.
• Parallel cable racks must be a minimum of 300 mm apart.
• If multiple terminals are to be housed in one duct, shield the terminals with a grounded conductive
plate.
Low-current
cable
Conductive
plate (steel)
Control cable
300 mm min.
Power cable
300 mm min.
Ground to 100 Ω or less
Ground to 100 Ω or less
Conductive
plate (steel)
200 mm min.
1. Resolver cable
2. Cam Positioner input cable
3. Cam Positioner power supply cable
General control cable
4. Power cable
1
2
3
4
12 3 4
Note The 3F88L-160/162 conforms to the Common Emission Standard (EN50081-2) in relation to
EMI. However, the radiated emission (10-m regulations) may vary depending on the configura-
tion of the control panel, connected devices, wiring, and other conditions. The customer must,
therefore, confirm that devices and the overall machine conform to EC Directives.
H Points to Consider when Wiring to Peripheral Devices
• Install a surge absorber and noise filter on the AC power supply input wiring.
• Pay attention to the following points when using relays, electromagnetic valves, and other noise-gen-
erating devices.
S Separate noise-generating devices, parts and the wiring as much as possible.
S Use a separate power supply system.
Design Chapter 2
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