Mitsubishi Electric FR-F720P-0.75K to 110K Instruction Manual page 154

(3) Fault output signal (ALM, ALM2 signal)
Inverter fault occurrence
(trip)
Fault output signal(ALM)
Fault output 2 signal(ALM2)
Reset signal(RES)
REMARKS
Refer to page 310 for the inverter fault description.
(4) Input MC shutoff signal (Y91 signal)
⋅ The Y91 signal is output at occurrence of a fault attributable to the failure of the inverter circuit or a fault caused by
a wiring mistake.
⋅ When using the Y91 signal, set "91 (positive logic)" or "191 (negative logic)" in any of Pr. 190 to Pr. 196 (output
terminal function selection) to assign the function to the output terminal.
⋅ The following table indicates the faults that will output the Y91 signal. (Refer to page 310 for the fault description.)
Fault Definition
Inrush current limit circuit fault (E.IOH)
CPU fault (E.CPU)
CPU fault (E.6)
CPU fault (E.7)
Parameter storage device fault (E.PE)
Parameter storage device fault (E.PE2)
24VDC power output short circuit (E.P24)
Power supply short circuit for operation panel, power supply
short circuit for RS-485 (E.CTE)
Output side earth(ground) fault overcurrent (E.GF)
Output phase loss (E.LF)
Brake transistor alarm detection/internal circuit error (E.BE)
♦ Parameters referred to ♦
Pr. 13 Starting frequency Refer to page 113
Pr. 76 Fault code output selection
ON OFF
OFF
ON
ON OFF
Reset processing
(about 1s)
Reset ON
Refer to page 174
Function assignment of external
⋅ If the inverter comes to trip, the ALM and ALM2
signals are output.
⋅ The ALM2 signal remains ON during a reset
period after fault occurrence.
⋅ When using the ALM2 signal, set "94 (positive
Time
logic)" or "194 (negative logic)" to any of Pr. 190 to
Pr. 196 (output terminal function selection) to assign
the function to the output terminal.
⋅ The ALM signal is assigned to the A1B1C1
contact in the initial setting.
terminal and control
143
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