EEA-PAM-523-C-30 Vickers
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The Vickers EEA-PAM-523-C-30 is a power amplifier from the EEA-PAM-5**-C-32 Power Amplifiers series. It operates with a nominal supply voltage of 24 V DC and requires 40 W of power. The amplifier has a minimum ramp time of 0.050 seconds and a maximum ramp time of 5 seconds, with four ramp potentiometers.
Internal Product Review
The EEA-PAM-523-C-30 power amplifier from Vickers is well-suited for precision hydraulic control, operating on a supply voltage range of 20 to 40 V DC with a nominal requirement of 24 V DC. Featuring four ramp potentiometers and a maximum ramp time of 5 seconds, this unit enables fine-tuned motion profiles for demanding automation tasks. Overall, this amplifier stands out for its adjustable ramping capabilities and reliable voltage performance.
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Product Description:
The EEA-PAM-523-C-30 is a plug-in power amplifier card produced by Vickers for the EEA-PAM Power Amplifiers series. Applied in hydraulic motion control, this card conditions command signals and drives proportional valve coils inside automated machinery. By fitting into a Euro-card rack, it supplies regulated voltages, ramp shaping, and safety monitoring that are necessary for smooth actuator positioning within industrial automation cells.
The board is powered from a nominal back-plane feed of 24 V DC; operation continues down to a minimum of 20 V DC and ceases automatically when bus voltage falls to 18 V DC through the undervoltage shutdown function. Electronics tolerate surges up to 40 V DC and supply ripple up to 10 % peak-to-peak without parameter drift. Four independent ramp potentiometers let the user define separate up and down slopes for each polarity, and the internal generator spans response times from 0.050 s to a maximum of 5 s, enabling slow cylinder motion or fast clutch engagement as required. Command enable circuitry requires at least 9.8 V before the card releases the output stage, preventing unintended activation during low-logic states.
Downstream of the supply section, an on-board regulator delivers a +15 V reference that can furnish up to 50 mA for external sensors or command potentiometers, and its ripple remains below <50 mV pk-pk to maintain signal fidelity. A separate ±10 V stage feeds the valve driver with ripple limited to <20 mV pk-pk, reducing dither and minimizing heat in the coils. Overall card consumption does not exceed 40 W, allowing multiple amplifiers to share a compact cabinet power supply. These low-noise outputs, together with the fast ramp generator and protective thresholds described earlier, complete a module that integrates clean power, timing control, and load supervision for proportional hydraulic axes.
