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FAQ
Output specification between FM and SD
The output across terminals FM and SD is input to the analog card, but the input values are not stable at the output of 0 Hz to 20 Hz. Also, the voltage value against the frequency seems to be not proportional.
Can I input the value directly?
Can I input the value directly?
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Answer
The output signal across FM and SD is pulse output.
The output frequency and number of pulses of the output signal across FM and SD are proportional. However, the output frequency and voltage across FM and SD are not proportional.
Thus, the output signal across FM and SD cannot be input to the analog card.
Install the pulse/voltage conversion circuit in front of the analog card.
The pulse across FM and SD can be adjusted with the following parameters.
Pr.55 (output frequency reference) → When the pulse number output frequency against the output frequency reaches the setting value of Pr.55, 1440 pulses/s are output from the terminals across FM and SD.
Pr.900 (FM terminal calibration) → Adjust the pulse width of the FM signal.
Adjust it according to the converter during operation.
The output frequency and number of pulses of the output signal across FM and SD are proportional. However, the output frequency and voltage across FM and SD are not proportional.
Thus, the output signal across FM and SD cannot be input to the analog card.
Install the pulse/voltage conversion circuit in front of the analog card.
The pulse across FM and SD can be adjusted with the following parameters.
Pr.55 (output frequency reference) → When the pulse number output frequency against the output frequency reaches the setting value of Pr.55, 1440 pulses/s are output from the terminals across FM and SD.
Pr.900 (FM terminal calibration) → Adjust the pulse width of the FM signal.
Adjust it according to the converter during operation.
- Product Name
- Inverter, magnet motor drive
- Product Category
- Inverter
- Series
- FR-E500