APECS 500 Single Speed Electronic Engine Controller

The APECS 500 single speed controller is designed to meet the needs of the small
genset market where simplicity, ease of operation, and low cost are key features.

The APECS 500 controller combines the convenience of manual adjustments with the flexibility of a computer-based calibration tool. Electrical connections consist of six wires to battery, actuator and magnetic engine speed pickup. For most applications, APECS 500 can be connected and adjusted with simple hand tools.

APECS 500 controls and limits engine speed by adjusting the fuel control lever with a proportional actuator. The controller will maintain fixed engine RPM regardless of load provided that the engine's available power is not exceeded (i.e., isochronous operation).

The controller has a multi-turn potentiometer for speed adjustment and a single-turn potentiometer for gain adjustment. It has six Euro-style screw terminals for:

• Battery Positive and Negative (9-30 Vdc). Reverse voltage protected.
• Actuator Positive and Negative (6A continuous). Short circuit protected.
• Magnetic Pickup (MPU) Positive and Negative (2 VAC minimum at 1000 Hz)