YASKAWA U1000 Series User Manual

3.8 Main Circuit Wiring
Electrical Installation
3
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual 91
Attach the protective covers after wiring the main circuit terminals, p1, and n1 terminals on models 20104 to
20248, 40096 to 40590, and the p1, n1, p2, n2, r1, 1, and t1 terminals on models 40720 to 40930.
Figure 3.31 shows an example of a main circuit protective cover for model 20104.
Figure 3.32
Figure 3.31 Protective Cover (20104)
◆ Main Circuit Wire Gauges and Tightening Torque
Select the appropriate wires and crimp terminals from Table 3.5 through Table 3.8.
Note: Wire gauge recommendations based on drive continuous current ratings (ND) using 75°C 600 Vac vinyl-sheathed wire assuming
ambient temperature within 40°C and wiring distance less than 100 m.
• 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 UL Standards Compliance on page 594 for information on UL compliance.
The wire gauges listed in the following tables are Yaskawa recommendations. Refer to local codes for proper wire gauge
selections.
Main circuit terminal
Terminals p1, n1
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YASKAWA U1000 Series Specifications

General

Brand	YASKAWA
Model	U1000 Series
Category	Control Unit
Language	English