Yaskawa RC5 Converter - Manual (Page 28)

3.3 Selecting Peripheral Devices
28 YASKAWA ELECTRIC TOEP C710656 01C YASKAWA - RC5 Instruction Manual
◆ Wiring Precautions
The external interconnection wiring must be performed with following procedures. After completing RC5 interconnections, be sure to check that the
connections are correct. Never use control circuit buzzer check.
■ Precautions on Control Circuit Wiring
• Separate control circuit wires from main circuit wires and other power cables to prevent erroneous operation caused by noise interference.
• Separate the wiring of control circuit terminals from other control terminals or main circuit wirings.
• Wiring distance should be less than 50 m.
• Insert the wire into the lower part of the terminal block and connect it tightly with a screwdriver. Wire sheath strip length must be 7 mm.
Figure 3.2
Figure 3.2 Control Circuit Terminal Wiring
• Use twisted shielded or twisted-pair shielded wire for the control circuit line and connect the shielded sheath to inverter terminal E. (See
Figure 3.3 )
Figure 3.3
Figure 3.3 Shielded Wire Termination
■ Ground Wiring
• Do not share the ground wire with other devices, such as welding machines or power tools. Separate the grounding cables from the wirings for
power tools.
• Always use a ground wire that complies with technical standards on electrical equipment and minimize the length of the ground wire.
Leakage current flows through the power regenerative unit. Therefore, if the distance between the ground electrode and the ground terminal is too
long, potential on the ground terminal of the power regenerative unit will become unstable.
• When using more than one power regenerative unit, be careful not to loop the ground wire.
Figure 3.4
Figure 3.4 Ground Wiring
0.6 mm max 3.5 mm max
Screwdriver Blade Width
7 mm
Never connect.
To power regenerative unit
shielded sheath terminal E
Shielded Sheath Armor
Insulate these parts
with insulating tape.
OK
OK
NO!