YASKAWA CR700, Техническое руководство, Страница: 90 / 886

2.12 Main Circuit Wiring
90 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Model Terminal
Recomm. Gauge
mm
2
Applicable Gauge
(IP20 Applicable
Gauge
*1
)
mm
2
Wire Stripping
Length
*2
mm
Terminal Screw
Tightening
Torque
N ∙ m (lbf ∙ in)
Size Shape
4453
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
125 × 4P
60 - 125 × 4P
(125 × 4P)
- M12 Hex self-locking nut
35
(310)
U/T1, V/T2, W/T3 100 × 4P
60 - 150 × 4P
(125 - 150 × 4P)
- M12 Hex self-locking nut
35
(310)
-, +1 100 × 4P
80 - 150 × 4P
(150 × 4P)
- M12 Hex self-locking nut
35
(310)
+3 80 × 4P
30 - 125 × 4P
(100 - 125 × 4P)
- M12 Hex self-locking nut
35
(310)
60
60 - 150
(-)
- M12 Hex bolt (slotted)
32 - 40
(283 - 354)
4605
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
125 × 4P
60 - 125 × 4P
(125 × 4P)
- M12 Hex self-locking nut
35
(310)
U/T1, V/T2, W/T3 100 × 4P
60 - 150 × 4P
(125 - 150 × 4P)
- M12 Hex self-locking nut
35
(310)
-, +1 125 × 4P
80 - 150 × 4P
(150 × 4P)
- M12 Hex self-locking nut
35
(310)
+3 100 × 4P
30 - 125 × 4P
(100 - 125 × 4P)
- M12 Hex self-locking nut
35
(310)
60
60 - 150
(-)
- M12 Hex bolt (slotted)
32 - 40
(283 - 354)
*1 For IP20 protection, use wires that are in the range of applicable gauges.
*2 Remove insulation from the ends of wires to expose the length of wire shown.
*3 For wire gauges more than 30 mm
2
, tighten to a tightening torque of 4.1 N∙m to 4.5 N∙m (36 lbf∙in to 40 lbf∙in).
*4 Terminals - and +1 have two screws. The Recommended Gauge is the wire gauge for one terminal.
*5 A junction terminal is necessary to connect a braking resistor unit (LKEB-series) to terminals B1 and B2.
◆
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: Make sure that you align the phase order for the drive and motor when you connect the motor to drive output
terminals U/T1, V/T2, and W/T3. If the phase order is incorrect, it can cause the motor to run in reverse. If the motor accidentally
runs in reverse, it can cause serious injury or death.
NOTICE: Use the drive ground wire to ground the drive only. Do not try to use the drive ground wire for other devices, for
example welding machines or large-current electrical equipment.
WARNING! Electrical Shock Hazard. Do not connect main power supply wiring to drive motor terminals U/T1, V/T2, and W/T3.
Connect main power supply wiring to main circuit input terminals R/L1, S/L2, and T/L3. Incorrect wiring can cause serious injury
or death from fire.
■
Cable Length Between Drive and Motor
When the wiring between the drive and the motor is too long, voltage drop along the motor cable can decrease
motor torque, usually at low frequency output. If you connect motors in parallel with long motor cable, this is also
a problem. Drive output current increases when the leakage current from the cable increases. An increase in
leakage current can cause overcurrent and decrease the precision of the current detection.
Use the values in
Table 2.12 to adjust the drive carrier frequency. For systems that have 100 m or longer motor
wiring, if you use metal conduits or isolated cables for each phase, it will increase stray capacitance.
Table 2.12 Carrier Frequency against Cable Length Between Drive and Motor
Wiring Distance Between the Drive
and Motor
50 m Maximum 100 m Maximum More than 100 m
Carrier Frequency 15 kHz or less 5 kHz or less 2 kHz or less
Note:
To set the carrier frequency in a drive that is operating more than one motor, calculate the cable length as the total distance of wiring to
all connected motors.
■
Ground Wiring
Follow the precautions to wire the ground for one drive or a series of drives.