3.8 Main Circuit Wiring
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual 73
Figure 3.26
Figure 3.19 Installing insulation barriers
◆ Wire Gauges and Tightening Torque
Select the appropriate wires and crimp terminals from Table 3.3 through Table 3.4.
Note: 1. Wire gauge recommendations based on drive continuous current ratings using 75°C 600 Vac vinyl-sheathed wire assuming ambient
temperature within 40°C and wiring distance less than 100 m.
2. Terminals +1, +2, +3, and – are for connecting optional devices such as a DC reactor or braking unit. Do not connect other
nonspecific devices to these terminals.
• Consider the amount of voltage drop when selecting wire gauges. Increase the wire gauge when the voltage drop is
greater than 2% of motor rated voltage. Ensure the wire gauge is suitable for the terminal block. Use the following
formula to calculate the amount of voltage drop:
Line drop voltage (V) = × wire resistance (Ω/km) × wire length (m) × motor rated current (A) × 10
-3
• Refer to instruction manuals TOBPC72060000 and TOBPC72060001 for braking unit or braking resistor unit wire
gauges.
NOTICE: Do not connect a braking resistor to terminals +1 and -. Failure to comply may cause damage to the drive circuitry.
• Use terminal +1 and the negative terminal when connecting a regenerative converter, or a regen unit.
• Refer to UL Standards Compliance on page 446 for information on UL compliance.
Yaskawa recommends using closed-loop crimp terminals on all drive models. UL/cUL approval requires the use of
closed-loop crimp terminals when wiring the drive main circuit terminals on models CIMR-E2A0110 to 2A0415 and
4A0058 to 4A1200. Use only the tools recommended by the terminal manufacturer for crimping. Refer to Closed-Loop
Crimp Terminal Size on page 450 for closed-loop crimp terminal recommendations.
The wire gauges listed in the following tables are Yaskawa recommendations. Refer to local codes for proper wire gauge
selections.
■
Three-Phase 200 V Class
Table 3.3 Wire Gauge and Torque Specifications (Three-Phase 200 V Class)
Model
CIMR-E
Terminal
Recommended Gauge
mm
2
Applicable Gauge
mm
2
Screw Size
Tightening Torque
Nm (lb.in.)
2A0004
2A0006
2A0008
2A0010
R/L1, S/L2, T/L3 2.5 2.5 to 6
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3 2.5 2.5 to 6
–, +1, +2 – 2.5 to 6
2.5
<1> 2.5 to 6
2A0012
R/L1, S/L2, T/L3 2.5 2.5 to 6
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3 2.5 2.5 to 6
–, +1, +2 – 2.5 to 6
2.5
<1> 2.5 to 6
2A0018
R/L1, S/L2, T/L3 2.5 2.5 to 6
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3 2.5 2.5 to 6
–, +1, +2 – 2.5 to 6
2.5
<1> 2.5 to 6
3
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