FREQROL-HC2

25

Precaution on selection and operation

SAFETY INSTRUCTIONS



To use the product safely and correctly, make sure to read "the Instruction Manual" before using the product.



This product has not been designed or manufactured for use with any equipment or system operated under life-threatening conditions.

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Please contact our sales office when you are considering using this product in special applications such as passenger mobile, medical, aerospace, nuclear, power or undersea relay equipment or system.



Although this product was manufactured under conditions of strict quality control, you are strongly advised to install safety devices to prevent serious accidents when it is used in facilities where breakdowns of the product or other failures are likely to cause a serious accident.



Do not use this product for a load other than dedicated inverters.

Installation Precautions Peripheral Device Selection

Precautions

Wiring distance



For the wiring distance between the high power factor converter (FR-HC2) and inverter, refer to the following table.

Across terminals P and P / terminals

N and N

Other control signal lines

50m or shorter

30m or shorter



The total wiring distance between the high power factor converter (FR-HC2) and standard accessories must be

30m or shorter. For 280K or higher, refer to the Instruction

Manual.)

Selection and installation of the moulded case circuit breaker

Install a moulded case circuit breaker (MCCB) on the power receiving side to protect the wiring at the converter's

input side. For the MCCB selection, refer to page 23. (Refer

to the materials related to the breaker.) For earth leakage circuit breakers, use the harmonic/surge compatible model provided by Mitsubishi.

Reactor installation at power supply side



The terminals R/L1, S/L2, and T/L3 of the high power factor converter are control terminals to detect power phases of the power supply. When wiring, the voltage phases of terminals R4/L14, S4/L24, and T4/L34 and the voltage phases of terminals R/L1, S/L2, and T/L3 must be matched. Failure to connect these terminals correctly will lead to an improper operation of the high power factor converter.



If the inverter is operated without connecting the terminals R/L1, S/L2, and T/L3 of the high power factor converter to the power supply, the high power factor converter will be damaged.

Operating Precautions



The Guideline treats the converter as a no-harmonicemitting device (K5 = 0), but the harmonic component is not completely 0.

Selection Precautions

Connectable inverter



Connect to the inverter that can accept DC inputs.



For the MELTRAC, FR-A500L, and FR-F500L series inverters, make sure the connecting inverter is compatible with the high power factor converter.

Connection with an incompatible inverter will damage the inverter and the converter.

Electromagnetic interference

Since the high power factor converter chops input voltage at high carrier frequency, it generates noises. If these noises cause peripheral devices to malfunction, countermeasures should be taken to suppress noises (EMI measures). The EMI measures differ depending on the noise transmission paths.



The FR-BIF radio noise filter is useful to suppress noises on AM radio broadcasting.



The FR-BSF01/FR-BLF line noise filters are useful for preventing malfunction of sensors, etc.



For the noise emitted from power cables, take a distance of 30cm (at least 10cm) from the power cables, and use shielded twisted pair cables for signal cables. Do not earth (ground) the shield. Connect the shield to one common terminal.

EMI measure example

FR-

BLF

Enclosure

Decrease carrier frequency

FR-

BLF

Install common mode filter

(FR-BLF, FR-BSF01) on the inverter output side

M Motor

Equipment power supply

Refer to the instruction manual for earthing (grounding) the high power factor converter and accessories.

Separate the inverter and power line by more than

30cm (at least 10cm) from sensor circuit.

Control power supply

FR-

BIF

Power supply for sensor

Use 4-core cable for motor power cable and use one cable as earth (ground) cable.

Use a shielded twisted pair cable

Sensor

Do not earth (ground) enclosure directly

Do not earth (ground) control cable

Do not earth (ground) shield but connect it to signal common cable.

Sine wave filter selection precautions



When using a sine wave filter with FR-HC2 (75K or higher), use MT-BSL-HC for the sine wave filter.