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Hi there, Can you anyone help me on how to connect multiple D700 Mitsubishi Inverters to FX3U PLC? Please let me know what are the cables required to connect the setup. Thanks in Advance Pavan
Posted
You can do RS485 serial communications and connect multiple drives. But if you want to do digital I/O signals, follow the wiring indicated in the drive manual. Controlling more than one drive simply means repeating the wiring and using more PLC inputs and outputs.
Posted
Then you'll have to wire using digital outputs on the PLC, according to the manual (using only digital signals, and excluding power supply and reference point): STF -> Start forward STR -> Start reverse RH -> High speed RM -> Middle speed RL -> Low speed Alternatively you can use start/stop digital, and speed using analog signal: STF -> Sart forward STR -> Start reverse 2/4/5 -> 4-20mA / 0-10V and reference A third option is to use Modbus (RS485): RDA/RDB -> Inverter receive SDA/SDB -> Inverter send

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