127
Function assignment of external
terminal and control
(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 330 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)
RS-485 terminal power supply short circuit (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 97
Pr. 76 Fault code output selection Refer to page 156
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