EEA-PAM-511-B-30 Vickers
Wake Industrial LLC is not an authorized distributor of this product.
The EEA-PAM-511-B-30 is a power amplifier manufactured by Vickers as part of the EEA-PAM Power Amplifiers series. It has a nominal power rating of 40 W and operates with a supply voltage of 24 VDC. The amplifier features a voltage input full scale of ±10 V and a current input full scale of ±20 mA.
Internal Product Review
The Vickers EEA-PAM-511-B-30 is a power amplifier with 24 VDC supply voltage and 40 W nominal power. Signal handling is well suited for precise electrohydraulic control, with ±10 V voltage input full scale and 47 kΩ voltage input impedance. A ±1% reference accuracy adds confidence in tuning and supports stable amplifier performance.
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Product Description:
The EEA-PAM-511-B-30 is a plug-in power amplifier card produced by Vickers for the EEA-PAM Power Amplifiers series. Installed in a hydraulic control rack, the card converts low-level command signals from a PLC into proportional drive current for a proportional valve. By closing the loop between electronic motion commands and hydraulic actuation, the module provides precise pressure or flow modulation in industrial automation systems that require a fast, repeatable response from servo-grade valves.
All active electronics are energized from a system rail of 24 VDC, while an onboard converter supports the internal stages with a current draw of 50 mA. The card accepts a dual-range command through either a ±10 V analog voltage input at the front edge or a ±20 mA current loop. In voltage mode, the input has an impedance of 47 kΩ, so source devices remain unloaded, and the signal is shaped by a 10 kΩ ramp network. Current mode passes through a 100 Ω burden resistor that converts the loop signal into a measurable differential. A reference generator supplies ±10 VDC at 5 mA to external potentiometers, providing a stable baseline for manual trimming. The module can dissipate up to 40 W under continuous dynamic drive, matching the thermal limits of its Eurocard format.
The backplane connection uses a DIN 41612 F48 male header that mates with standard 19-inch racks. Before external circuitry applies commands, the internal command source current is limited to 10 mA, preventing source overload in potentiometer mode. Final null adjustment is performed through a 50 Ω drive-zero resistor that centers the valve spool without affecting gain. Reference stability remains within ±1% of nominal to minimize drift during long production runs. This stability allows the module to deliver predictable hydraulic response under changing temperature and load conditions.
