Mitsubishi Electric FR-A800, Instruction Manual

Page: 851 / 1042

Parameters (G) Control parameters
FR-A800 5 - 671
5.16.8 Output stop function
The motor coasts to a stop (inverter output shutoff) when inverter output frequency falls to Pr. 522
setting or lower.
●
When both of the frequency setting signal and output frequency falls to the frequency set in
Pr. 522 or lower, the inverter stops the output and the motor coasts to a stop.
●
At a stop condition, the motor starts running when the frequency setting signal exceeds Pr. 522
+ 2 Hz. The motor is accelerated at the Pr. 13 "Starting frequency" (0.01 Hz under PM sensorless
vector control) at the start.
Pr. Name
Initial
value
Setting
range
Description
522
G105
Output stop frequency 9999
0 to 590 Hz
Set the frequency to start coasting to a stop
(output shutoff ).
9999 No function
I002843E
Fig. 5-333: Example for inverter output shutoff
NOTE When the output stop function is valid (Pr. 522
≠
"9999"), the DC injection brake (zero speed con-
trol, servo lock) becomes invalid and the motor coasts to stop when the output frequency drops to
the Pr. 522 setting or lower.
STF
RUN
* The output frequency before the slip compensation is compared with the Pr. 522 setting.
Example of when target frequency >Pr. 522 + 2 Hz, and start signal is ON/OFF
Output frequency *
Time
Inverter output shutoff
Pr. 522+2 Hz
Pr. 522
Pr. 13
Target frequency
(fixed)