Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации, Страница: 185 / 512

Parameter Adjust the output torque (current) of the motor
FR-D700 SC EC 6 - 35
Stall prevention operation signal output and output timing adjustment (OL signal, Pr. 157)
When the output current exceeds the stall prevention operation level and stall prevention is ac-
tivated, the stall prevention operation signal (OL signal) turns on for longer than 100ms. When
the output current falls to or below the stall prevention operation level, the output signal turns off.
Use Pr. 157 "OL signal output timer" to set whether the OL signal is output immediately or after
a preset period of time.
This operation is also performed when the regeneration avoidance function or oL (overvoltage
stall) is executed.
For the OL signal, set "3" (positive logic) or "103" (negative logic) in Pr. 190, Pr. 192 or Pr. 197
and assign functions to the output terminal.
Pr. 157 Setting Description
0 Output immediately.
0.1–25s Output after the set time (s) has elapsed.
9999 Not output.
Tab. 6-2: Setting of parameter 157
Fig. 6-5:
Output of the OL signal
I001330E
NOTES
If the frequency has fallen to 1Hz by stall prevention operation and remains for 3s, a fault
(E.OLT) appears to trip the inverter output.
Changing the terminal assignment using Pr. 190, Pr. 192 or Pr. 197 may affect the other
functions. Make setting after confirming the function of each terminal.
Overload state
Pr. 157
OL output signal