EEA-PAM-581-A-33 Vickers
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The Vickers EEA-PAM-581-A-33 is a power amplifier card from the EEA-PAM Power Amplifiers series, measuring 175.24 mm in height, 122.4 mm in width, and 40.3 mm in depth. It operates with a nominal supply voltage of 24V DC and has a maximum control supply current of 50 mA. The card supports automatic overload detection reset and provides reference outputs of ±10 V with a maximum current of 5 mA.
Internal Product Review
The EEA-PAM-581-A-33 is a Vickers power amplifier featuring a nominal 24V DC supply and a 50 W power rating, making it well-suited for demanding industrial control systems. With voltage input impedance of 47 kΩ and automatic overload detection reset, this unit supports stable operation and system protection. The amplifier stands out for its reliable performance and essential safety features.
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Product Description:
The EEA-PAM-581-A-33 is a plug-in power amplifier card from the EEA-PAM Power Amplifiers series manufactured by Vickers. It is installed in hydraulic control racks to drive proportional valves and other motion elements in automated machinery. By converting low-level command signals into regulated coil current, the card lets a PLC or analog controller modulate pressure, flow, or position without adding discrete power stages.
The board occupies just 40.3 mm of depth, stands 175.24 mm high, and is 122.4 mm wide, enabling dense installation inside standard Euro-card cages. It is powered from a nominal 24V DC supply, and its internal converters support a total load of 50 W for valve actuation and signal conditioning. An automatic reset function clears the overload detector once line conditions return to normal, so external intervention is not required after a trip. The card provides dedicated ±10 V reference outputs for motion commands along with ±15 V auxiliary rails that feed external transducers. These fixed rails mean the host controller does not need separate analog supplies when interfacing with the module.
Interface characteristics are tuned for industrial signal standards. The control supply draws up to 50 mA, while the auxiliary rails present fixed potentials of -15 V and +15 V to peripheral electronics. A current input impedance of 100 Ω matches typical flow transducers; voltage inputs present 47 kΩ to minimize loading on command sources. The enable line, used to gate drive or initiate soft ramps, offers 22 kΩ, and the monitor output is buffered with 10 kΩ so multiple diagnostic instruments can be connected in parallel. Reference outputs deliver −10 V or +10 V at up to 5 mA, letting the card serve both bipolar and unipolar control schemes without recalibration.
