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Mitsubishi Electric FR-E520 Instruction Manual Page 202

Transistorized inverter.
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Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
E. P24
24VDC power output short circuit
When the 24VDC power output from the PC terminal is
shorted, this function shuts off the power output. At this time,
all external contact inputs switch off. The inverter cannot be
reset by entering the RES signal. To reset it, use the operation
panel or switch power off, then on again. (for 400V class only)
Check for a short circuit in the PC terminal output.
Remedy the earth (ground) fault portion.
E. LF
Output phase failure protection
This function stops the inverter output if one of the three
phases (U, V, W) on the inverter's output side (load side)
results in open phase.
• Check the wiring (Check the motor for a fault.)
• Check that the capacity of the used motor is not smaller than
the inverter capacity.
• Wire the cables properly.
• Check the setting of Pr. 251 "output phase failure protection
selection".
192
PROTECTIVE FUNCTIONS
FR-PU04 Pr.24 alarm
FR-PU04 E. LF

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