EEA-PAM-523-A-30

EEA-PAM-523-A-30 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 from 20 VDC minimum to 40 VDC maximum. Maximum supply ripple is ±10% peak-to-peak, limiting acceptable voltage variation at the power input. An undervoltage shutdown threshold of 18 VDC switches off operation when the input voltage falls too low. Power consumption is 40 W.

The control supply operates at ±15 VDC and draws 50 mA to power the control circuitry. Its ripple must remain below 50 mV peak-to-peak to maintain a stable control supply. The enable input has a resistance of 22 kΩ, which determines the electrical load presented to the enable signal.

The reference output provides ±10 VDC at up to 5 mA for use as a command or reference signal. Reference-output ripple is below 20 mV peak-to-peak, reducing variation in this signal. Reference temperature drift is below 1 mV/ºC, indicating the maximum reference-voltage change with temperature. The solenoid-current monitor uses a scale of 1 V/A, so each ampere of measured solenoid current corresponds to a 1 V monitor signal. The monitor output impedance is 10 kΩ, which determines the load characteristics required for connected monitoring equipment.