3.6 Main Circuit Wiring
This section describes the functions, specifications, and procedures required to safely and properly wire the main circuit
of the drive.
NOTICE: Do not solder the ends of wire connections to the drive. Soldered wiring connections can loosen over time. Improper wiring
practices could result in drive malfunction due to loose terminal connections.
u
Main Circuit Terminal Functions
Table 3.1 Main Circuit Terminal Functions
Terminal Type Function Reference
R/L1
Main circuit power
supply input
Connects line power to the drive.
Drives with single-phase 200 V input power use terminals R/L1 and S/L2 only.
T/L3 must not be used.
51S/L2
T/L3
U/T1
Drive output Connects to the motor. 60V/T2
W/T3
B1
Braking resistor Available for connecting a braking resistor or the braking resistor unit option. 71
B2
⊕1
DC reactor connection
These terminals are shorted at shipment. Remove the shorting bar between ⊕1
and ⊕2 when connecting a DC reactor to this terminal.
309
⊕2
⊕1
DC power supply input For connecting a DC power supply. –
⊖
(2 terminals)
Ground Grounding Terminal 60
u
Wire Gauges and Tightening Torque
Select the appropriate wires and crimp terminals from Table 3.2 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 30 °C and wiring distance shorter than 100 m.
2. Terminals ⊕1, ⊕2, ⊖, B1 and B2 are for connecting optional devices such as a braking resistor. Do not connect other non-specified
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) =
3 x wire resistance (Ω/km) x wire length (m) x current (A) x 10
-3
• Refer to instruction manual TOBP C720600 00 for braking unit or braking resistor unit wire gauges.
• Refer to UL Standards Compliance on page 441 for information on UL compliance.
n
Single-Phase 200 V Class
Table 3.2 Wire Gauge and Torque Specifications
Drive
Model
Terminal
For Japan and Asia
<1>
For United States
<2>
For Europe and China
<3>
Screw
Size
Tightening
Torque
N•m (lb.in.)
Recomm.
Gauge
mm
2
Wire Range
mm
2
Recomm.
Gauge
AWG, kcmil
Wire Range
AWG, kcmil
Recomm.
Gauge
mm
2
Wire Range
mm
2
BA0001
BA0002
BA0003
R/L1, S/L2,
T/L3
2 0.75 to 2 14 18 to 14 2.5 0.75 to 2.5
M3.5
0.8 to 1.0
(7.1 to 8.9)
U/T1, V/T2,
W/T3
2 0.75 to 2 14 18 to 14 2.5 0.75 to 2.5
⊖, ⊕1, ⊕2
2 0.75 to 2 – 18 to 14 – 0.75 to 2.5
B1, B2 2 0.75 to 2 – 18 to 14 – 0.75 to 2.5
2 0.75 to 2 14 18 to 14 2.5 0.75 to 2.5
3.6 Main Circuit Wiring
56
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
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