About the 8C13U
The 8C13U is a controller in the ImPak Plus series made by Reliance Electric. To adjust the maximum speed for the controller, initially set the MAX SPD potentiometer on the regulator Board fully counter clockwise. This should prevent the motor from over-speeding with the Operator’s Speed Potentiometer set at one hundred percent. Gradually increase the Operator’s Speed Potentiometer to one hundred percent. Observe that the motor and drive machine does not exceed their maximum safe speed. Using a suitable screwdriver, adjust the MAX SPD. Potentiometer clockwise until one hundred percent motor speed is obtained. When performing this adjustment use extreme care to keep the drive motor from exceeding its rated maximum speed as it is listed on the nameplate of the controller. Care should also be given to the maximum safe speed of the driven equipment so at no time is it driven beyond its maximum allowed safe speed. Failure to heed this could result in bodily injury. For the drive acceleration time, the reference acceleration circuit ramps the speed reference input. It is adjustable by the ACC. Potentiometer over a 0.5 to a 30.0-second range. With the Drive in the “STOP” mode, set the Operator’s Speed Potentiometer to one hundred percent. Start the drive and adjust the ACC. Potentiometer to the desired acceleration time to maximum speed for the machine and the process. Keep in mind that at very short acceleration times, the Drive cannot accelerate any faster than the available acceleration torque will allow. The minimum acceleration time that can be achieved is with the Drive is in current limit. When accelerating large inertial loads, the torque required to accelerate the machine may be significantly greater than the running torque load.
