EEA-PAM-525-B-30 Vickers
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The Vickers EEA-PAM-525-B-30 is part of the EEA-PAM Power Amplifiers series and operates with a nominal supply voltage of 24 VDC and a power consumption of 40 watts. It features command current and voltage inputs of 0 to 20 mA at 100 ohms and 0 to 10 V at 47 kilo-ohms, respectively. The amplifier provides a ramp time range from 50 milliseconds to 5 seconds and has an under-voltage shutdown at 18 VDC.
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Product Description:
The EEA-PAM-525-B-30 is a plug-in power amplifier card produced by Vickers for the EEA-PAM Power Amplifiers series. When installed in a hydraulic valve control rack, the module converts low-level command signals into proportional coil current so that servo or proportional valves track set points accurately in industrial automation.
This card operates from a nominal supply of 24 VDC, drawing up to 40 W during full load to energize its internal regulators and output stages. It accepts a current reference of 0–20 mA across an internal 100 Ω shunt or a voltage reference of 0–10 V presented to a 47 kΩ input, letting a PLC choose either sourcing mode without recalibration. For downstream electronics, the board provides stabilized control rails of ±15 V, 50 mA; these auxiliary supplies can power feedback transducers or joystick pots located close to the valve. Adjustable integrator capacitors define a ramp time between 50 ms–5 s, smoothing command changes and preventing hydraulic shock when set points shift rapidly.
The enable line is isolated by a 22 kΩ resistor and responds to logic levels from 9.8–40 VDC, allowing the same signal that energizes a pump starter to bring the amplifier online. If the incoming bus drops to the under-voltage threshold of 18 VDC, output stages are disabled to protect the spool from partial actuation. Reference outputs of ±10 V ±1 %, 5 mA are available for sensor excitation, and their temperature drift is limited to less than 1 mV/°C so closed-loop accuracy remains stable over a wide cabinet temperature range.
Frequently Asked Questions about EEA-PAM-525-B-30:
Q: What is the command current input specification for the EEA-PAM-525-B-30 power amplifier?
A: This unit accepts a command current input range of 0 to 20 mA with a 100 Ω input resistance.
Q: What supply voltage is required to operate the EEA-PAM-525-B-30 amplifier?
A: The nominal supply voltage required for this model is 24 VDC.
Q: What is the power consumption of the EEA-PAM-525-B-30 power amplifier?
A: The EEA-PAM-525-B-30 power amplifier has a maximum power consumption of 40 W.
Q: What is the ramp time range available on the EEA-PAM-525-B-30?
A: The ramp time can be adjusted from 50 milliseconds to 5 seconds on this unit.
Q: At what voltage does the EEA-PAM-525-B-30 initiate under-voltage shutdown?
A: This model will perform an under-voltage shutdown if supply voltage drops below 18 VDC.
