Mitsubishi Electric FR-A820-00046 Instruction Manual page 411

Parameters
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 formu-
la.
Pr. 503 × 100
40000 h
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.
NOTES Masking of the data output and sampling of the output current are not performed during acceler-
ation/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, mini-
mum 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.
FR-A800
5 s (Maintenance timer value 100%/5 s)
×
Maintenance timer value
The speed is changed to deceleration from the
constant speed during start bit output
Invalid cycle (20 s)
(E) Environment setting parameters
Fig. 5-83:
Signal output time for the maintenance output
value
Time
Next cycle
End signal
Output as low pulse shape for
16.5 s
I001267E
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