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3 Electrical Installation
• Never short or ground the output terminals.
• Do not use phase correction capacitors.
• If using a contactor between the drive and motor, it should never be operated when the
drive is outputting a voltage. Operating while there is voltage output can cause large peak
currents, thus tripping the over current detection or damage the drive.
Ground Connection
Take the following precautions when grounding the drive.
• The drive must always be connected to ground in accordance to the general technical
standards and local regulations.
As the leakage current produced by the drive exceeds 3.5 mA, according to IEC/EN
61800-5-1, at least one of the conditions below must be satisfied:
–The cross-section of the protective earthing conductor must be at least 10 mm
or 16 mm
(Al).
2
–The power supply must be disconnected automatically in case of discontinuity of
the protective earthing conductor.
• Keep ground wires as short as possible.
• 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
terminal. 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
R/L1, S/L2, T/L3
EN 18
Type
Connects line power to the drive.
Main circuit power
Drives with single-phase 200 V input power use terminals R/L1 and
supply input
S/L2 only (T/L3 is not used).
YASKAWA ELECTRIC TOEP C710606 15E - AC Drive V1000 - Quick Start Guide
Function
(Cu)
2
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