Main Circuit Terminal And Motor Wiring - YASKAWA GA700 Technical Manual

2.12 Main Circuit Wiring
Model Terminal
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/
L31
U/T1, V/T2, W/T3
4453
-, +1
+3
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/
L31
U/T1, V/T2, W/T3
4568
-, +1
+3
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/
L31
U/T1, V/T2, W/T3
4675
-, +1
+3
*1 Remove the insulator from the tips of wires to the length shown in "Wire Stripping Length."
*2 When using wire with a gauge over 30 mm
◆

Main Circuit Terminal and Motor Wiring

This section outlines the various steps, precautions, and checkpoints for wiring the main circuit terminals and
motor terminals.
NOTICE: When connecting the motor to the drive output terminals U/T1, V/T2, and W/T3, the phase order for the drive and
motor should match. Failure to comply with proper wiring practices may cause the motor to run in reverse if the phase order is
backward.
NOTICE: Do not connect phase-advancing capacitors or LC/RC noise filters to the output circuits. Failure to comply could
damage the drive, phase-advancing capacitors, LC/RC noise filters or RCM/RCD.
WARNING! Electrical Shock Hazard. Do not connect the AC power line to the output terminals of the drive. Failure to comply
could result in death or serious injury by fire as a result of drive damage from line voltage application to output terminals.
■
Cable Length Between Drive and Motor
Voltage drop along the motor cable may cause reduced motor torque when the wiring between the drive and the
motor is too long, especially at low frequency output. This can also be a problem when motors are connected in
parallel with a fairly long motor cable. Drive output current will increase as the leakage current from the cable
increases. An increase in leakage current may trigger an overcurrent situation and weaken the accuracy of the
current detection.
Adjust the drive carrier frequency according to the following table. If the motor wiring distance exceeds 100 m
because of the system configuration, implement strategies such as avoiding the use of metal conduits, or use
separate cables for each phase so that stray capacitance is reduced.
Cable Length Between Drive
and Motor
Carrier Frequency
64
Recommen
Wire Range
ded Gauge
2
mm
mm 2
2 , tighten to a tightening torque of 4.1 to 4.5 N∙m (36 to 40 lb∙in.).
Up to 50 m
15 kHz or less
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Wire Terminal Screw
Stripping
Length
*1
Size Shape
mm
Tentative
Tentative
Tentative
Up to 100 m
5 kHz or less
Tightening Torque
N∙m (lb∙in)
Greater than 100 m
2 kHz or less