EEA-PAM-535-A-32

EEA-PAM-535-A-32 is a Vickers power amplifier in the EEA-PAM Power Amplifiers series. It operates from a nominal 24 VDC supply, with a permitted supply range of 20 VDC minimum to 40 VDC maximum. The amplifier shuts down when the supply falls below 18 VDC, helping prevent operation at insufficient voltage. Power consumption is 50 W, while the maximum control supply current is 50 mA.

The control supply provides a ±15 V output for connected control circuitry. A ±10 V reference output supports external command and adjustment circuits, with a maximum reference output current of 5 mA. The voltage command input has an impedance of 47 kΩ, the current command input has an impedance of 100 Ω, and the enable input has an impedance of 22 kΩ; these values determine the electrical loading presented to their respective signal sources.

The amplifier drives its solenoid through pulse-width modulation (PWM), which regulates solenoid current by varying the switching duty cycle. Its output is short-circuit protected to limit damage caused by an output fault. Overload detection resets automatically after the overload condition clears. Reverse-polarity protection helps protect the amplifier if the DC supply connections are reversed.