3 Electrical Installation
EN 16 YASKAWA Europe TOEP C710606 15C YASKAWA AC Drive - V1000 Quick Start Guide
• Always make sure the ground impedance is conformed to the requirements of local safety
and installation regulations.
• Never share the ground wire with other devices such as welding machines, etc.
• Do not loop the ground wire when using more than one drive.
Control Circuit Wiring Precautions
Consider the following precautions for wiring the control circuits.
• Separate control circuit wiring from main circuit wiring and other high-power lines.
• Separate wiring for control circuit terminals MA, MB, MC (contact output) from wiring
to other control circuit terminals.
• For external control power supply use a UL Listed Class 2 power supply.
• Use twisted-pair or shielded twisted-pair cables for control circuits to prevent operating
faults.
• Ground the cable shields with the maximum contact area of the shield and ground.
• Cable shields should be grounded on both cable ends.
• If flexible wires with ferrules are connected they might fit tightly into the terminals. To
disconnect them, grasp the wire end with a pair of pliers, release the terminal using a
straight-edge screw driver, turn the wire for about 45°, and pull it gently out of the termi-
nal. For details, refer to the Technical Manual. Use this procedure for removing the wire
link between HC, H1 and H2 when the Safe Disable function is utilized.
Main Circuit Terminals
Terminal Type Function
R/L1, S/L2, T/L3
Main circuit power
supply input
Connects line power to the drive.
Drives with single-phase 200 V input power have no T/L3 terminal.
U/T1, V/T2, W/T3 Drive output Connects to the motor.
B1, B2 Braking resistor For connecting a braking resistor or the braking resistor unit option.
+1, +2
DC reactor connec-
tion
Linked at shipment. Remove the link to install a DC choke.
+1, –
DC power supply
input
For connecting a DC power supply.
(2 terminals)
Ground Terminal
For 200 V class: Ground with 100 Ω or less
For 400 V class: Ground with 10 Ω or less
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