3.7 Main Circuit Wiring
58 YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
Note: Refer to the related instruction manuals for the applicable wire gauges when connecting peripheral devices to terminals -, +1, +3,
B1, and B2. Contact your Yaskawa representative or the nearest Yaskawa sales office directly for consultation if using a wire
gauge not listed in the manual.
u 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 result in
damage to the drive, phase-advancing capacitors, LC/RC noise filters or ground fault circuit interrupters.
NOTICE: Do not connect the AC power line to the output motor 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.
n 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 Table 3.5. If the motor wiring distance exceeds 100 m because of the
system configuration, reduce the ground currents. Refer to C6-02: Carrier Frequency Selection on page 152.
Table 3.5 Cable Length Between Drive and Motor
Note: 1. When setting carrier frequency in a drive running multiple motors, calculate the cable length as the total distance of wiring to all
motors that are connected.
2. The maximum cable length is 100 m when using OLV/PM (A1-02 = 5) or AOLV/PM (A1-02 = 6).
4A0208
R/L1, S/L2, T/L3 95 35 to 95
M10
18 to 23
(159 to 204)
U/T1, V/T2, W/T3 95 35 to 95
–, +1 – 35 to 150
+3 – 25 to 70
50 50 to 150
4A0250
R/L1, S/L2, T/L3 120 95 to 300
M10
18 to 23
(159 to 204)
U/T1, V/T2, W/T3 120 95 to 300
–, +1 – 70 to 300
+3 – 35 to 300
70 70 to 240
4A0296
R/L1, S/L2, T/L3 185 95 to 300
M12
32 to 40
(283 to 354)
U/T1, V/T2, W/T3 185 95 to 300
–, +1 – 70 to 300
+3 – 35 to 300 M10
18 to 23
(159 to 204)
95 95 to 240 M12
32 to 40
(283 to 354)
4A0362
R/L1, S/L2, T/L3 240 95 to 300
M12
32 to 40
(283 to 354)
U/T1, V/T2, W/T3 240 95 to 300
–, +1 – 95 to 300
+3 – 70 to 300 M10
18 to 23
(159 to 204)
120 120 to 240 M12
32 to 40
(283 to 354)
<1> When an EMC filter is installed, additional measures must be taken in order to comply with IEC61800-5-1. Refer to EMC Filter Installation
on page 477.
Cable Length 50 m or less 100 m or less Greater than 100 m
Carrier Frequency 15 kHz or less 5 kHz or less 2 kHz or less
Model
CIMR-T
Terminal
Recommended Gauge
mm
2
Applicable
Gauge
mm
2
Screw
Size
Tightening
Torque
Nxm (lb.in.)
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