Mitsubishi Electric 800 Series Instruction Manual page 305

 Fault output signals (ALM, ALM2)
• The Fault (ALM, ALM2) signals are output when the inverter protective function is activated.
• The ALM2 signal stays ON during the reset period 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 the output terminal.
• The ALM signal is assigned to the A1B1C1 contacts in the initial status.
Inverter fault occurrence
(trip)
ON OFF
ALM
ON
ALM2
RES
Reset ON
NOTE
• For the inverter fault details, refer to
 Input MC shutoff signal (Y91)
• 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 the output terminal.
• The following table shows the faults that output the Y91 signal. (For the fault details, 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 (control circuit board) (E.PE)
Parameter storage device fault (main circuit board) (E.PE2)
Internal storage device fault (E.PE6)
24 VDC power fault (E.P24)
Operation panel power supply short circuit/RS-485 terminals
power supply short circuit (E.CTE)
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
details on the PLC function, refer to the PLC Function Programming Manual.)
Parameters referred to
Pr.13 Starting frequency
Pr.76 Fault code output selection
304
5. PARAMETERS
5.8 (M) Monitor display and monitor output signal
Time
OFF
ON OFF
Reset processing
(about 1 s)
page 570.
Fault record
page
201, page 202
page 314
page 570.)