EEA-PAM-561-C-33 Vickers
Wake Industrial LLC is not an authorized distributor of this product.
MPN: 105EC00059A
The Vickers EEA-PAM-561-C-33 power amplifier is part of the EEA-PAM Power Amplifiers series. It features a power supply voltage of 24 V DC and an input power rating of 50 W. The amplifier offers reverse polarity protection and a control output supply of ±15 V with a maximum of 50 mA.
Internal Product Review
The EEA-PAM-561-C-33 from Vickers is a power amplifier designed for demanding hydraulic control, featuring a 24 V DC supply voltage and input power rating of 50 W. With a voltage input impedance of 47 kΩ and ramp time adjustable between 50 ms and 5 s, this unit allows for precise control signal management. Reverse polarity protection is included, making this amplifier a reliable choice for industrial automation applications.
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Product Description:
The EEA-PAM-561-C-33 is a plug-in power amplifier card produced by Vickers within the EEA-PAM Power Amplifiers series. Intended for proportional valve actuation in industrial automation, the board converts command signals from PLCs into controlled spool currents while monitoring supply conditions and safety interlocks. It mounts in a 19-inch Eurocard rack and interfaces with upstream controllers through standardized back-plane connectors, supplying conditioned power to the valve coil drivers and returning diagnostic signals to the host system.
Normal operation is based on a nominal supply of 24 V DC; the circuitry remains functional from a floor of 20 V DC up to a ceiling of 40 V DC. Voltage excursions outside this window are filtered by onboard regulators that also tolerate line ripple up to 10% pk-pk. When the incoming rail decays to 18 V DC, an internal comparator forces amplifier shutdown, preventing erratic valve positioning. Input power draw never exceeds 50 W, so thermal loading stays modest in densely populated racks. Reverse-polarity diodes protect the card if the cabinet harness is wired incorrectly. The analog integrators that shape the spool acceleration share the same supply, and user-selectable ramp generators span 50 ms to 5 s, allowing either rapid response or gentle motion, depending on process demands.
The command stage accepts current-mode references through a 100 Ω shunt or voltage-mode references through a 47 kΩ resistor network, letting designers select the best noise immunity for each installation. Downstream valve coils receive excitation from a regulated driver powered by the auxiliary rail of ±15 V, 50 mA, which the board also offers for external transducers. Motion is permitted only when the logic enable pin rises above 9.8 V, ensuring coordinated start-up with host controllers. Comprehensive input filtering and ground isolation maintain signal integrity so that proportional flow or pressure commands track linearly across the amplifier’s stroke range.
