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Function assignment of external
terminal and control
(3) Fault output signal (ALM, ALM2 signal)
(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 334 for the fault description.)
⋅ 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
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.
REMARKS
Refer to page 334 for the inverter 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 104
Pr. 76 Fault code output selection Refer to page 161
ON
OFF
ON
ON
OFF
Reset ON
Output frequency
Fault output signal(ALM)
Fault output 2 signal(ALM2)
Reset signal(RES)
OFF
Inverter fault occurrence
(trip)
Reset processing
(about 1s)
Time