Causes and corrective actions
Protective functions
6 - 34
Operation panel
indication
E.ECT
FR-LU-08
Encoder signal loss
Name
Signal loss detection
Description
The inverter trips when the encoder signal is shut off under orientation control, encoder
feedback control or vector control. This protective function is not available in the initial status.
Check point
앫
Check for the encoder signal loss.
앫
Check that the encoder specifications are correct.
앫
Check for a loose connector.
앫
Check that the switch setting of a vector control compatible option is correct.
앫
Check that the power is supplied to the encoder. Alternatively, check that the power is not
supplied to the encoder later than the inverter.
앫
Check that the voltage of the power supplied to the encoder is the same as the encoder
output voltage.
Corrective action
앫
Remedy the signal loss.
앫
Use an encoder that meets the specifications.
앫
Make connection securely.
앫
Make a switch setting of a vector control compatible option correctly. (Refer to page 2-73.)
앫
Supply the power to the encoder. Or supply the power to the encoder at the same time
when the power is supplied to the inverter.
If the power is supplied to the encoder after sent to the inverter, check that the encoder
signal is properly sent and set "0 (initial value)" in Pr. 376 "Encoder signal loss detection
enable/disable selection" to disable signal loss detection.
앫
Make the voltage of the power supplied to the encoder the same as the encoder output
voltage.
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Страница 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
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Страница 1110: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
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