EEA-PAM-561-A-30
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The EEA-PAM-561-A-30 is a servo amplifier card with a power supply voltage of 24 VDC and maximum current consumption of 1.2 A. Manufactured by Vickers and part of the EEA-PAM-5**-A-30 Power Amplifiers series, it operates within a temperature range of 0°C to +50°C. This plug-in Eurocard weighs approximately 0.3 kg and includes LED status monitoring.
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Product Description:
The EEA-PAM-561-A-30 Power Amplifier is a product of Vickers, which is powered with a nominal 50-watt, 24V DC power supply to provide reliable energy input for industrial purposes. This amplifier provides a maximum solenoid current of 1.8 A to ensure adequate current for effective actuation of solenoids.
The input current (MP1) of this EEA-PAM-561-A-30 Power Amplifier is 1.4 A to provide stable control in idle or zero input conditions. This power amplifier features factory-programmed deadband compensation of 10% of maximum spool stroke, which actually reduces control lag and improves responsiveness. The factory-programmed gain of this amplifier is 10% per volt, which determines the default signal amplification for general operation. To accommodate various control requirements, the gain per direction adjustment of this amplifier is programmable between 2.5% and 10% of gain per volt. The ramp time of this amplifier can be adjusted from a minimum of 50 milliseconds to a maximum of 5 seconds to allow users to customize response speeds for differing load dynamics. This amplifier has a shut-down mechanism at voltages below 18V DC to keep the system safe from unsafe power operation.
The command inputs of this power amplifier are ±10V (available at terminals b6, b8, and b10), and Input 1, which features an impedance of 47 kΩ, while Input 2 offers a greater impedance of 100 kΩ for interfacing flexibility with signal sources. A reverse-polarity protection is provided to safely protect this amplifier against power connection errors. The EEA-PAM-561-A-30 power amplifier operates within an ambient temperature of 0 to 50 °C (32 to 122 °F), and it is suitable for a wide range of industrial applications. With its weight of just 330g (0.15 lb), the EEA-PAM-561-A-30 power amplifier is compact enough to fit into panels or systems easily.
Frequently Asked Questions about EEA-PAM-561-A-30:
Q: How does the adjustable gain benefit system tuning?
A: Adjustable gain allows precise control of actuator response based on system dynamics. It helps in optimizing valve performance under varying load conditions.
Q: Why is ramp time adjustment important in hydraulic systems?
A: Ramp time adjustment reduces mechanical shock by controlling acceleration and deceleration rates. This extends the lifespan of system components.
Q: How does the deadband compensation improve valve control in EEA-PAM-561-A-30?
A: It minimizes the non-responsive zone in spool movement. This results in smoother valve transitions and increased control precision.
Q: What is the role of high input impedance in command inputs?
A: High impedance reduces the load on the signal source. It ensures signal accuracy and prevents voltage drops.
Q: Why is amplifier shut-down set below 18V DC in EEA-PAM-561-A-30?
A: It prevents unstable operation during low voltage conditions. This ensures system safety and avoids erratic valve behavior.
