• The RUN signal (positive logic) is initially assigned to the terminal RUN.
Fault (ALM) signal and Fault output 2 (ALM2) signal
• The fault signal (ALM or ALM2 signal) is output when an inverter protective function is activated.
• The ALM2 signal stays ON during the resetting the inverter after the Fault occurs.
• To use the ALM2 signal, set "94 (positive logic) or 194 (negative logic)" in any of Pr.190 to Pr.196 (Output terminal
function selection) to assign the function to an output terminal.
• The ALM signal is initially assigned to the relay terminals A1, B1, and C1.
Inverter fault occurrence
• For the details of the inverter faults, refer to
Input power shutoff like magnetic contactor (Y91 signal)
• The Fault output 3 (Y91) signal is output when a fault originating in the inverter circuit or a connection fault occurs.
• To use 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 an output terminal.
• The following is the list of faults that output the Y91 signal. (For the details of faults, refer to
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)
24 VDC power fault (E.P24)
Operation panel power supply short circuit/RS-485 terminals power supply short circuit
Output side earth (ground) fault overcurrent (E.GF)
Output phase loss (E.LF)
Internal circuit fault (E.BE)
Internal circuit fault (E.13/E.PBT)
Changing the special relay function for the PLC function
• For the PLC function, the function of special relays (SM1225 to SM1234) can be changed by setting Pr.313 to Pr.322. (For
the details of the PLC function, refer to the PLC Function Programming Manual.)
Parameters referred to
Pr.76 Fault code output
Output frequency detection
If the inverter output frequency which reaches a specific value is detected, the relative signal is output.
5.8 (M) Item and output signal for monitoring