Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 240

3) Setting of Pr. 557 Current average value monitor signal output reference current
Set the reference (100%) for outputting the signal of the current average value. Obtain the time to output the signal from
the following calculation.
Output current average value
Pr. 557 setting
Note that the output time range is 0.5 to 9s and the output time is either of the
following values when the output current average value is the corresponding
percentage of the Pr. 557 setting.
Less than 10% ... 0.5s, more than 180% ... 9s
Example) when Pr. 557 = 10A and the average value of output current is 15A
As 15A/10A x 5s = 7.5, the current average value monitor signal is
output as low pulse shape for 7.5s.
4) Setting of Pr. 503 Maintenance timer
After the output current average value is output as low pulse shape, the
maintenance timer value is output as high pulse shape. The output time of the
maintenance timer value is obtained from the following calculation.
Pr. 503  100
40000h
Note that the output time range is 2 to 9s, and it is 2s when the Pr. 503 setting is
less than 16000h and 9s when exceeds 72000h.
REMARKS
 Mask of data output and sampling of output current are not performed during acceleration/deceleration.
 When the speed is changed to acceleration/deceleration from constant speed during start pulse output, the data is judged as
invalid. The start pulse is output as high pulse shape for 3.5s, and the end signal is output as low pulse shape for 16.5s.
The signal is output for at least 1 cycle even when acceleration/deceleration state continues after the start pulse output is
completed.
Y93 signal
2) Start pulse
Output as high pulse shape for 3.5s
 If the drive unit output is in OFF-state after one cycle of the signal output, the Y93 signal is not output until the next constant
speed operation.
 If the motor is being accelerated/decelerated after one cycle of the signal output, the Y93 signal maintains a low output (no data
output) for 20 seconds.
NOTE
 Changing the terminal assignment using Pr. 190 and Pr. 192 (output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr. 190, Pr. 192 (output terminal function selection)
Pr. 503 Maintenance timer
 5s (Output current average value 100%/5s)
 5s (Maintenance timer value 100%/5s)
Rotation speed
Previous cycle
Refer to page 123.
Refer to page 235.
The speed is changed to deceleration
from the constant speed during start pulse output
Invalid cycle (20s)
5) End pulse
Output as low pulse shape for 16.5s
Useful functions
(s)
9
0.5
10 180 (%)
Output current average value
(s)
9
2
16000 (h)
72000
Maintenance timer value
Time
Next cycle
237
4