The Overload error will occur when the 1050 board has detected a very high amperage draw to the motor. This happens due to the motor meeting some kind of resistance. An Overload cannot be fixed by adjusting the force settings. Motor overloads are different than a motor "Dynamic" or "Static" Hard Shutdown errors.
Overload errors can appear due to the following factors:
1) Physical obstructions
a) Check the operator's weight specifications in the manual. Is the gate to heavy?
b) Check if there is anything impeding the travel of the gate
d) Check if the gate slamming to a stop
c) Is there a large wind force acting on the gate
2) Mechanical obstructions
a) Listen for strain on the motor
b) Check gate hinges/ rollers
c) Check for track damage
For 7000 series slide gates (Except 7251 and 7351):
The drive sprocket should be changed on slide gate operators when going from an 835/836 control board to a 1050 control board. It is especially important with installations with heavy gates ( Part: 40BS13).
For all gates (Except the 3500 series):
Changing the "Slowdown" value may help to reduce the current if the overload error occurs while the gate is starting to slowdown at the very end of it's travel. This setting can be found under the "Speed" button menu, and it is the #4 on the list. This setting can be reduced, but it is not advised to set it lower than 45%.
For all gates:
Lowering the "Acceleration" values will help to reduce current being pulled by the motor. There are two acceleration settings under the "Speed" button (#5 and #6). This could help alleviate an overload if it occurs when the operator has just started moving or reversing direction.