Mitsubishi Electric FR-A700 Instruction Manual page 338

Adjust the output torque of the motor (current)
Stall prevention operation signal output and output timing adjustment (Pr. 157)
When the output power exceeds the stall prevention operation level and stall prevention is acti-
vated, the stall prevention operation signal (OL signal) turns on for longer than 100ms. When the
output power 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 (over voltage stall)
is executed.
Pr. 157 Setting
0 (Initial setting)
Tab. 6-29: Setting of parameter 157
Overload state
OL output signal
NOTES The OL signal is assigned to the terminal OL in the initial setting. The OL signal can also be
assigned to the other terminal by setting "3" (source logic) or "103" (sink logic) to any of
Pr. 190 to Pr. 196 "Output terminal function selection".
If the frequency has fallen to 0.5Hz by stall prevention operation and remains for 3s, an
alarm (E.OLT) appears to shutoff the inverter output.
When terminal assignment is changed using Pr. 190 to Pr. 196 "Output terminal function
selection", the other functions may be affected. Please make setting after confirming the
function of each terminal.
6 - 158
Description
Output immediately.
0.1–25s Output after the set time (s) has elapsed.
9999 Not output.
Pr. 157
Fig. 6-49:
Output of the OL signal
Parameter
I001330E