Panasonic M2X Series Instruction Manual

Panasonic M2X Series Instruction Manual Manual pdf 10 page image

- 10 -CAUTIONInstructions for safe and correct operation1. The capacity of the power source must be in the range 1.5 times the inverter capacity to 500kVA. If the power source has 500 kVA or higher capacity and the length of the cablebetween it and the inverter is 100 m or less, or if the power source has a phase advancingcapacitor selector, excessive peak current will flow into the power source input circuit andmay damage the converter. If this is the case, install power factor improvement AC reactorat the input of each inverter.2. Do not connect the phase advancing capacitor to the inverter output. Otherwise, thecapacitor may be damaged.3. Do not install an electromagnetic contactor between the inverter and motor. Run/stop themotor from inverter operation panel using the RUN switch or control input terminal. Do notoperate the electromagnetic contactor installed on the power source more often thanactually required.In particular, never attempt to start or stop the motor with this electromagnetic contactor.4. Operating the motor through the inverter increases leakage current that may trip the leakagebreaker. If this is the case, use leakage breaker of high frequency proof type (designed foruse with inverter) on both the system causing the problem and system affected.5. The total cable length of the inverter and motor must be shorter than 30 m. To use a cablelonger than 30 m, provide a reactor between the inverter and the motor, or reduce theinverter’s carrier frequency.Inverter ↔ motor cable length Up to 30 m Up to 50 m Up to 100 m[ Carrier frequency] 0 to 7(14.9 kHz or less)0 to 5(10.1 kHz or less)0 to 2(3.9 kHz or less)6. To use the electronic thermal trip function incorporated in the inverter, observe the followinginstructions.• Check the rated current of your 3-phase induction motor to define the electric thermalvalue.• Use one motor for each inverter.7. To control several motors with an inverter (parallel operation), select the inverter’s capacityso that the total of the motors’ rated currents does not exceed the inverter’s rated current.Note that, if you select the inverter’s capacity based on the total of the motors’ capacity, theinverter’s rated current may be exceeded depending on the motor type.