Mitsubishi Electric 800 Series Instruction Manual page 190

 Pr.503 Maintenance timer 1 output
• After LOW output of the output current value is performed, HIGH output of the maintenance timer value is performed. The
maintenance timer value output time is calculated with the following formula.
Pr.503 × 100
40000h
The output time range is 2 to 9 s. When Pr.503 is less than 16000 h, the output time is 2 s, and when it is more than 72000 h,
the output time is 9 s.
(s)
9
2
16000
72000 (h)
Maintenance timer value
NOTE
• Masking of the data output and sampling of the output current are not performed during acceleration/deceleration.
• If constant speed changes to acceleration or deceleration during start pulse output, it is judged as invalid data, and HIGH
output in 3.5 s intervals is performed for the start pulse and LOW output in 16.5 s intervals is performed for the end signal.
After the start pulse output is completed, minimum 1-cycle signal output is performed even if acceleration/deceleration is
performed.
Output frequency
Previous cycle
Y93
signal
Start pulse
Output as high pulse shape for 3.5 s
• If the output current value (inverter output current monitor) is 0 A at the completion of the 1-cycle signal output, no signal
is output until the next constant-speed state.
• Under the following conditions, the Y93 signal is output with Low output in 20 s intervals (no data output).
When acceleration or deceleration is operating at the completion of the 1-cycle signal output
When automatic restart after instantaneous power failure (Pr.57 Restart coasting time  "9999") is set, and the 1-cycle signal output is
completed during the restart operation
When automatic restart after instantaneous power failure (Pr.57  "9999") is set, and the restart operation was being performed at the
completion of data output masking
• Pr.686 Maintenance timer 2 and Pr.688 Maintenance timer 3 cannot be output.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.57 Restart coasting time
Pr.190 to Pr.196 (Output terminal function selection)
Pr.503 Maintenance timer 1, Pr.686 Maintenance timer 2, Pr.688 Maintenance timer 3
× 5 s (Maintenance timer value 100%/5 s)
The speed is changed to deceleration from
the constant speed during start pulse output
Invalid cycle (20 s)
page 448
page 297
Time
Next cycle
End signal
Output as low pulse shape for 16.5 s
5.4 (E) Environment setting parameters
page 186
5. PARAMETERS
3
4
5
5
5
6
7
8
9
10
189