Mitsubishi Electric 800 Series Instruction Manual page 379

(M) Monitor display and monitor output signal
Fault output signals (ALM, ALM2)
Inverter fault occurrence
(trip)
ON OFF
ALM
ON
ALM2
ON OFF
RES
Reset processing
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
Fault record
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 (E.CTE)
Output side earth (ground) fault overcurrent (E.GF)
Output phase loss (E.LF)
Brake transistor alarm detection (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.13 Starting frequency page
Pr.76 Fault code output selection
378
PARAMETERS
Time
OFF
(about 1s)
page 629.
283, page 284
page 388
• 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.
page 629.)