3.8 Main Circuit WiringThis section describes the functions, specifications, and procedures required to safely and properly wire the main circuit inthe drive.NOTICE: Do not solder the ends of wire connections to the drive. Soldered wiring connections can loosen over time. Improper wiring practicescould result in drive malfunction due to loose terminal connections.NOTICE: Do not switch the drive input to start or stop the motor. Frequently switching the drive on and off shortens the life of the DC buscharge circuit and the DC bus capacitors, and can cause premature drive failures. For the full performance life, refrain from switching thedrive on and off more than once every 30 minutes.Refer to Factory Recommended Branch Circuit Protection for UL Compliance on page 255 for details on fuse selection.u Main Circuit Terminal FunctionsTable 3.1 Main Circuit Terminal FunctionsTerminal Type Function PageDrive Model 5A0003 to 5A0032 5A0041, 5A0052 5A0062 to 5A0242R/L1Main circuit power supply input Connects line power to the drive 71S/L2T/L3U/T1Drive output Connects to the motor 71V/T2W/T3B1 Braking resistor Not available Available for connecting a brakingresistor or a braking resistor unit option –B2⊕2 • DC link chokeconnection(⊕1, ⊕2)(remove the shortingbar between⊕1 and ⊕2)• DC power supplyinput(⊕1, ⊖)Not availableFor connecting:• the drive to a DC power supply• dynamic braking options• a DC link choke–⊕1DC power supply input(⊕1, ⊖)• DC power supplyinput (⊕1, ⊖)• Braking unitconnection (⊕3, ⊖)⊖⊕3 Not available10 Ω or less Grounding terminal 84Note: Use terminals B1 and ⊖ when installing a CDBR-type braking unit on drives with built-in braking transistors (Models 5A0003 to 5A0052).u Protecting Main Circuit Terminalsn Insulation Caps or SleevesUse insulation caps or sleeves when wiring the drive with crimp terminals. Take particular care to ensure that the wiring doesnot touch nearby terminals or the surrounding case.3.8 Main Circuit Wiring80 YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
