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 Table 3.1 Main Circuit Terminal Functions 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 less than 100 m. 2. Terminals +1, +2, –, B1 and B2 are for connecting optional devices such as a DC reactor or 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 TOBPC72060000 for braking unit or braking resistor unit wire gauges. • Refer to UL Standards Compliance on page 218 for information on UL compliance. Electrical Installation n Single-Phase 200 V Class Table 3.2 Wire Gauge and Torque Specifications 3 n Three-Phase 200 V Class Table 3.3 Wire Gauge and Torque Specifications SIEP C710606 33A OYMC AC Drive – J1000 User Manual 37 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). 34 S/L2 T/L3 U/T1 Drive output Connects to the motor. 38 V/T2 W/T3 B1 Braking resistor Available for connecting a braking resistor or the braking resistor unit option. 47 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. 153 +2 +1 DC power supply input For connecting a DC power supply. – – (2 terminals) Ground Grounding Terminal For 200 V class: 100 Ω or less For 400 V class:
10 Ω or less 38 Model JZA Terminal Screw Size Tightening Torque N•m (lb.in.) Applicable Gauge mm2 (AWG) Recommended Gauge mm2 (AWG) B0P1 B0P2 B0P4 R/L1, S/L2, U/T1, V/T2, W/T3, –, +1, +2, B1, B2, M3.5 0.8 to 1.0 (7.1 to 8.9) 0.75 to 2.5 (18 to 14) 2.5 (14) B0P7 R/L1, S/L2, U/T1, V/T2, W/T3, –, +1, +2, B1, B2, M4 1.2 to 1.5 (10.6 to 13.3) 2.5 to 6 (14 to 10) 2.5 (14) B1P5 R/L1, S/L2, U/T1, V/T2, W/T3, M4 1.2 to 1.5 (10.6 to 13.3) 2.5 to 6.0 (14 to 10) 4 (12) –, +1, +2, B1, B2 M4 1.2 to 1.5 (10.6 to 13.3) 2.5 to 6.0 (14 to 10) 6 (10) Model JZA Terminal Screw Size Tightening Torque N•m (lb.in.) Applicable Gauge mm2 (AWG) Recommended Gauge mm2 (AWG) 20P1 20P2 20P4 20P7 R/L1, S/L2, T/L3, U/T1, V/T2, W/T3, –, +1, +2, B1, B2, M3.5 0.8 to 1.0 (7.1 to 8.9) 0.75 to 2.5 (18 to 14) 2.5 (14)