Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 201 / 608

Parameter Adjust the output torque (current) of the motor
FR-E700 SC EC/ENE 6 - 47
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 activat-
ed, the stall prevention operation signal (OL signal) turns on for longer than 100 ms. 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 to Pr. 192 "Output terminal
function selection" and assign functions to the output terminal.
Pr. 157 Setting Description
0 Output immediately.
0.1–25 s Output after the set time (s) has elapsed.
9999 Not output.
Tab. 6-3: Setting of parameter 157
Fig. 6-7:
Output of the OL signal
I001330E
NOTES
If the frequency has fallen to 1 Hz by stall prevention operation and remains for 3 s, a fault (E.OLT)
appears to trip the inverter output.
Changing the terminal assignment using Pr. 190 to Pr. 192 "Output terminal function selection"
may affect the other functions. Make setting after confirming the function of each terminal.
Overload state
Pr. 157
OL output signal