Mitsubishi Electric 800 Series Instruction Manual page 240

 Restricting reset method for an earth (ground) fault
• The reset method when the output is shut off due to the output side earth (ground) fault overcurrent (E.GF) can be
restricted. When E.GF occurs while Pr.249 = "2", E.GF can be reset only by turning OFF the control circuit power.
• This restriction prevents the inverter from being damaged due to repeated reset operations by the other methods such as
entering the RES signal.
• When E.GF occurs while Pr.249 = "2", the output short-circuit detection (ALM4) signal can be output.
• For the terminal used to output the ALM4 signal, set "23" (positive logic) or "123" (negative logic) in any of Pr.190 to Pr.196
(Output terminal function selection).
• If Pr.249 is set to "2" while the retry function is enabled (Pr.67 is not set to "0"), no retry is performed even when E.GF
occurs.
• If Pr.249 is set to "2" while the automatic bypass switching after inverter fault is enabled (Pr.138 is set to "1"), the operation
is not switched to the commercial power supply operation even when E.GF occurs.
NOTE
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
• If E.GF occurs during emergency drive operation when Pr.249 = "2", the output is shut off.
5. PARAMETERS
5.7 (H) Protective function parameter
3
4
5
5
5
6
7
8
9
10
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