Main Circuit Wiring; Main Circuit Wiring; Main Circuit Terminal Functions; Wire Gauges And Tightening Torque - YASKAWA V1000 Technical Manual

3.6 Main Circuit Wiring

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

Terminal
R/L1
Main circuit power
S/L2
supply input
T/L3
U/T1
V/T2 Drive output
W/T3
B1
Braking resistor
B2
⊕1
DC reactor connection
⊕2
⊕1
DC power supply input
⊖
Ground
(2 terminals)
u

Wire Gauges and Tightening Torque

Select the appropriate wires and crimp terminals from
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
• Refer to instruction manual TOBP C720600 00 for braking unit or braking resistor unit wire gauges.
• Refer to UL Standards Compliance on page 441
n Single-Phase 200 V Class
Drive
Terminal
Model
R/L1, S/L2,
T/L3
U/T1, V/T2,
BA0001
W/T3
BA0002
⊖, ⊕1, ⊕2
BA0003
B1, B2
56
Table 3.1 Main Circuit Terminal Functions
Type
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.
Connects to the motor.
Available for connecting a braking resistor or the braking resistor unit option.
These terminals are shorted at shipment. Remove the shorting bar between ⊕1
and ⊕2 when connecting a DC reactor to this terminal.
For connecting a DC power supply.
Grounding Terminal
Table 3.2 Wire Gauge and Torque Specifications
<1>
For Japan and Asia
Recomm.
Wire Range
Gauge
2
mm
2
mm
2 0.75 to 2
2 0.75 to 2
2 0.75 to 2
2 0.75 to 2
2 0.75 to 2
Function
Table 3.2 through Table
for information on UL compliance.
<2>
For United States
Recomm.
Wire Range
Gauge
AWG, kcmil
AWG, kcmil
14 18 to 14
14 18 to 14
– 18 to 14
– 18 to 14
14 18 to 14
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
3.4.
-3
<3>
For Europe and China
Recomm.
Wire Range
Gauge
2
mm
2
mm
2.5 0.75 to 2.5
2.5 0.75 to 2.5
– 0.75 to 2.5
– 0.75 to 2.5
2.5 0.75 to 2.5
Reference
51
60
71
309
–
60
Tightening
Screw
Torque
Size
N•m (lb.in.)
0.8 to 1.0
M3.5
(7.1 to 8.9)