EEA-PAM-568-D-32
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The Vickers EEA-PAM-568-D-32 is part of the EEA-PAM-5**-D-32 Power Amplifiers series and functions as a servo amplifier card. It operates on a 24 VDC power supply, delivers up to 5A output current, and supports ±10 V command signals. With plug-in Eurocard mounting, it includes integrated short circuit protection.
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Product Description:
The Vickers amplifier EEA-PAM-568-D-32 is engineered for high-precision closed-loop control of proportional directional valves, specifically tailored for use with the KFDG5V-5/7 valve series. It has an integrated PID controller and possess power stages into a single module to reduce system complexity and enhance reliability in demanding electrohydraulic applications.
The EEA-PAM-568-D-32 power amplifier operates on a 24V DC supply and includes a +15V regulated output for powering LVDTs that are used in valve spool position feedback. It supports a variety of command input formats that includes ±10V voltage and 4–20 mA current signals. All analog inputs, such as the command, feed-forward and sensor inputs are fully buffered with defined input impedance of 47 kΩ for voltage inputs and 100 Ω impedance is for current, to ensure accurate signal processing. The PID loop is fully adjustable via front-panel potentiometers for P-gain 0.1–50 V/V, I-gain 0.5–100 V/s/V and D-gain 0–0.05 V/V/s to enable optimal tuning across a wide range of dynamic responses. The EEA power amplifier supports signal conditioning and internal ramp generation with separate ramp-up and ramp-down adjustments. Additional potentiometers allow fine-tuning of feed-forward gain of 20–100% and sensor signal offset of ±10%. Six dedicated monitor test points MP1–MP6 provides real-time voltage access in ±10V range for conditioned command, feedback, PID output and integrator states to facilitate commissioning and diagnostics.
The EEA-PAM-568-D-32 power amplifier features digital outputs of sensor failure and errors in feedback signal to support external system monitoring. Its functions allow independent verification of valve drive, loop behavior and polarity without external command sources. The EEA power amplifier operates within 0-50°C and it carries a weight of 0.88 lbs. with a dimensional measure of 175.24 mm length and 100 mm width.
Frequently Asked Questions about EEA-PAM-568-D-32:
Q: What role does the integrated PID controller play in the EEA-PAM-568-D-32?
A: The integrated PID controller provides fine-tuned control over valve performance, allowing users to adjust proportional, integral, and derivative gains to achieve optimal dynamic response for precise electrohydraulic systems.
Q: How does the 24V DC supply benefit the EEA-PAM-568-D-32 amplifier?
A: The 24V DC supply ensures compatibility with most industrial control systems while maintaining stable and efficient power delivery, supporting a variety of input signals for versatile application scenarios.
Q: Why are the input impedances of 47 kΩ for voltage and 100 Ω for current important in the EEA-PAM-568-D-32?
A: These input impedances ensure accurate signal processing, enabling high-precision control without signal distortion, which is crucial for maintaining system stability and performance in electrohydraulic applications.
Q: How does the EEA-PAM-568-D-32 support real-time diagnostics?
A: With six dedicated monitor test points (MP1–MP6), users can access real-time voltage readings, aiding in rapid commissioning, diagnostics, and system troubleshooting to ensure reliable performance.
Q: Why is a +15V regulated output provided for LVDTs in the EEA-PAM-568-D-32?
A: The +15V output powers Linear Variable Differential Transformers (LVDTs), enabling accurate valve spool position feedback for precise control and closed-loop monitoring in the electrohydraulic system.
