FREQROL S500 PDF

Do not connect terminals SD and PC each other or to the earth. For sink logic, terminal SD acts as the common terminal of contact input. For source logic, terminal PC acts as the common terminal of contact input. Refer to page 25 for the way to switch between them. Low indicates that the open collector outputting transistor is on conducts.

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Do not connect terminals SD and PC each other or to the earth. For sink logic, terminal SD acts as the common terminal of contact input. For source logic, terminal PC acts as the common terminal of contact input. Refer to page 25 for the way to switch between them. Low indicates that the open collector outputting transistor is on conducts.

High indicates that the transistor is off does not conduct. Compatible with only the type having RS communication function. Refer to page The following selection example assumes the wiring length of 20m Use the carrier frequency of 1kHz when the wiring length of the FR-S The wiring length should be 30m Refer to page 1.

Never perform such wiring. Wire off-cuts can cause an alarm, failure or malfunction. Always keep the inverter clean. When drilling a control box etc.

If the wiring distance is long between the inverter and motor, a main circuit cable voltage drop will cause the motor torque to decrease especially at the output of a low frequency. Therefore, note the maximum overall wiring length. This will cause the inverter to trip or the capacitor and surge suppressor to be damaged. If any of the above devices are connected, remove them. For some time after power-off, there is a dangerous voltage in the capacitor.

Appropriate peripheral devices must be selected according to the capacity. Refer to the following list and prepare appropriate peripheral devices: 1 FR-S Since their values depend on the static capacitances, carrier frequency, etc.

These leakage currents may operate earth leakage circuit breakers and earth leakage relays unnecessarily. Counter measures If the carrier frequency setting is high, decrease the carrier frequency Pr. Note that motor noise increases. Factory setting By using earth leakage circuit breakers designed for harmonic and surge suppression e.

Counter measures Use the electronic overcurrent protection of the inverter. Decrease the carrier frequency. To ensure that the motor is protected against line-to-line leakage currents, it is recommended to use a temperature sensor to directly detect motor temperature. Installation and selection of no-fuse breaker On the power receiving side, install a no-fuse breaker NFB to protect the primary wiring of the inverter. Which NFB to choose depends on the power supply side power factor which changes with the power supply voltage, output frequency and load of the inverter.

Especially as the completely electromagnetic type NFB changes in operational characteristic with harmonic currents, you need to choose the one of a little larger capacity. Check the data of the corresponding breaker. For the earth leakage circuit breaker, use our product designed for harmonic and surge suppression Progressive Super Series. Refer to page 13 for the recommended models. In the connection neutral point grounded system, the sensitivity current becomes worse for ground faults in the inverter secondary side.

Hence, the protective grounding of the load equipment should be 10 or less. When the breaker is installed in the secondary side of the inverter, it may be unnecessarily operated by harmonics if the effective value is less than the rating. In this case, do not install the breaker since the eddy current and hysteresis loss increase and the temperature rises.

The control power supply for inverter is always running and consumes a little power. When stopping the inverter for a long time, switching inverter power off saves power slightly. Use the cables which are equal in size to those of the main circuit. Refer to page 11 1. Though the inverter is designed to be insusceptible to noise, it handles low-level signals, so it requires the following general counter measures to be taken. Use twisted shield cables for the detector connecting and control signal cables and connect the sheathes of the shield cables to terminal SD.

Ground the inverter, motor, etc. To prevent this, take appropriate measures, e.

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FREQROL S500 PDF

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