Product Description:

The EEA-PAM-581-B-32 power amplifier belongs to the EEA-PAM Power Amplifiers series manufactured by Vickers. Designed as a plug-in printed-circuit card, it installs in a 19-inch sub-rack and interfaces between low-level control electronics and high-power proportional devices. By converting command voltages into controlled current and monitoring feedback signals, the module becomes a central element in closed-loop drive or positioning functions inside industrial automation equipment. Its circuitry integrates reference generation, ramp shaping, and fault indication on a single board.

This amplifier draws a nominal input of 24 V DC, and its internal circuitry dissipates up to 50 W, values that define the cabinet supply requirements and thermal load. The command channel expects a differential signal of ±10 V, 10 mA, allowing direct connection to common motion controllers without intermediate stages. To maintain signal integrity, the voltage input path presents 47 kΩ of impedance, while the separate current input is terminated at 100 Ω for transducers that source current. Positive and negative 10 V reference outputs, each limited to 5 mA, are provided so external potentiometers or summing cards can be powered directly from the board.

The module’s feedback section offers a dedicated LVDT excitation of +15 V and accepts main-stage return signals on pins b14, z22 and b16, with pilot-stage returns on z14, z22 and z16. Ramp commands interface through an input impedance of 10 kΩ, letting the user shape acceleration and deceleration profiles with external capacitors. Fault indication is handled by an open-collector alarm that can sink 50 mA to a controller input. Mechanical integration is through a DIN 41612 F48 edge connector, and the card occupies 100 mm of rack width, 128.4 mm in depth, and a height of 175.24 mm.