u
Main Circuit Wire Gauges and Tightening Torques
Use the tables in this section to select the appropriate wires and crimp terminals.
Gauges listed in the tables are for use in the United States.
Note:
1.
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.
2.
Terminals
⊕
1,
⊕
2,
⊕
3,
⊖
, B1 and B2 are for connecting optional power devices. Use caution to connect only approved devices to the
correct terminal(s).
• 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) = 3 × wire resistance (Ω/km) × wire length (m) × current (A) × 10
-3
• Refer to instruction manual TOBPC72060000 or TOBPC72060001 for braking transistor option or braking resistor option
wire gauges.
• Use terminals
⊕
1 and
⊖
when connecting a regenerative converter or a regen unit.
NOTICE: Do not connect a braking resistor to terminals
⊕
1 or
⊖
. Failure to comply may cause damage to the drive circuitry.
• Use terminals B1 and
⊖
when installing a CDBR-type braking unit on drives with built-in braking transistors (models
2A0004 to 2A0138, 4A0002 to 4A0072, and 5A0003 to 5A0052).
NOTICE: Do not connect a braking resistor to terminals
⊕
1 or
⊖
. Failure to comply may cause damage to the drive circuitry.
•
Refer to UL Standards Compliance on page 550
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 2A0110 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
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.
n
Three-Phase 200 V Class
Table 3.3 Wire Gauge and Torque Specifications (Three-Phase 200 V Class)
Drive Model
Terminal
Recomm. Gauge
AWG, kcmil
Wire Range
AWG, kcmil
Screw
Size
Tightening Torque
N·m (lb.in.)
2A0004
2A0006
2A0008
2A0010
R/L1, S/L2, T/L3
14
14 to 10
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3
14
14 to 10
⊖
,
⊕
1,
⊕
2
–
14 to 10
B1, B2
–
14 to 10
10
14 to 10
2A0012
R/L1, S/L2, T/L3
12
14 to 10
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3
14
14 to 10
⊖
,
⊕
1,
⊕
2
–
14 to 10
B1, B2
–
14 to 10
10
14 to 10
2A0018
R/L1, S/L2, T/L3
10
12 to 10
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3
10
14 to 10
⊖
,
⊕
1,
⊕
2
–
14 to 10
B1, B2
–
14 to 10
10
14 to 10
2A0021
R/L1, S/L2, T/L3
10
12 to 10
M4
1.2 to 1.5
(10.6 to 13.3)
U/T1, V/T2, W/T3
10
12 to 10
⊖
,
⊕
1,
⊕
2
–
12 to 10
B1, B2
–
14 to 10
10
12 to 10
3.8 Main Circuit Wiring
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
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Electrical Installation
