Yaskawa J1000 Compact V/f Control Drive - Manual (Page 46)

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.
Do NOT use T/L3.
– S/L2
T/L3
U/T1
Drive output Connects to the motor. 49 V/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 49
u Wire Gauges and Tightening Torques
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.
3.6 Main Circuit Wiring
46 YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide