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 3.3 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.
Do NOT use T/L3.
–S/L2
T/L3
U/T1
Drive output Connects to the motor.
53V/T2
W/T3
B1
Braking resistor Available for connecting a braking resistor or the braking resistor unit option. –
B2
1
DC link choke connection
These terminals are shorted at shipment. Remove the shorting bar between 1
and 2 when connecting a DC link choke to this terminal.
–
2
1
DC power supply input For connecting a DC power supply. –
(2 terminals)
Ground Grounding Terminal 53
u
Wire Gauges and Tightening Torques
Select the appropriate wires and crimp terminals from
Table 3.4 through Table 3.6.
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 427 for information on UL compliance.
n
Single-Phase 200 V Class
Table 3.4 Wire Gauge and Torque Specifications
Drive
Model
Terminal
Recomm.
Gauge
AWG, kcmil
Wire Range
AWG, kcmil
Screw
Size
Tightening
Torque
N•m (lb.in.)
BV0006
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
BV0010
R/L1, S/L2, T/L3 10 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
3.6 Main Circuit Wiring
50
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
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