Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 129

Function assignment of external terminal and control
(3) Fault output (ALM) signal
Drive unit fault occurrence
(Trip)
Rotation
speed
ALM
OFF
ON
RES ON OFF
Reset processing
Reset ON
REMARKS
 The ALM signal is assigned to the ABC contact in the initial setting. By setting "99 (positive logic) or 199 (negative logic) in
Pr. 190 or Pr. 192 (output terminal function selection), the ALM signal can be assigned to the other signal.
 Refer to page 254 for the drive unit fault description.
(4) Fault output 3 (power-off signal) (Y91) signal
 The Y91 signal is output at occurrence of a fault attributable to the failure of the drive unit circuit or a fault caused by a
wiring mistake.
 When using the Y91 signal, set "91 (positive logic)" or "191 (negative logic)" to Pr. 190, Pr. 192 (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 253 for the fault description.)
Operation Panel
Indication
E. BE
E.GF
E.LF
E.PE
E.CPU
E.IOH
REMARKS
 At occurrence of output side earth (ground) fault overcurrent (E.GF), overcurrent trip during acceleration(E.OC1) may be
displayed. At this time, the Y91 signal is output.
Parameters referred to
Pr. 281 Brake operation time at start, Pr. 283 Brake operation time at stop
Pr. 736 Electromagnetic brake interlock time
126
Time
(about 1s)
Name
Brake transistor alarm detection
Output side earth (ground) fault overcurrent at start
Output phase loss
Parameter storage device fault
CPU fault
Inrush current limit circuit fault
Refer to page 113.
 If the drive unit comes to trip, the ALM signal is output.
Refer to page 112.