Product Description:

The EEA-PAM-535-D-33 is a plug-in power amplifier card produced by Vickers within the EEA-PAM Power Amplifiers series. Installed in hydraulic drive racks, it modulates current to proportional solenoid valves so that flow or pressure can be set by an external control signal during automated machine cycles.

The board runs from a nominal supply of 24 VDC and its power stage is rated for 50 W. At a zero-volt command it draws 1.7 A, while coil demand can rise to a maximum solenoid current of 3.2 A for full-stroke operation. Voltage command inputs meet a load of 47 kΩ, and an alternative current command path terminates into 100 Ω; these values prevent loading of PLC or motion controller outputs. Physical dimensions are governed by the 128.4 mm card height, and the module’s 0.4 kg mass eases insertion and removal. A DIN 41612 F48 male edge connector provides the interface to the backplane and routes all power, feedback, and command lines.

The card generates an auxiliary rail of +15 V for external sensors, plus precision references of +10 V (5 mA) and −10 V (5 mA) for potentiometer or joystick inputs. High-impedance signal sources are protected by a sensor input that is buffered at 1 MΩ. Additional analog paths include a 6 kΩ feed-forward input that allows open-loop biasing, a 10 kΩ ramp generator input that shapes acceleration profiles, and a 10 kΩ monitor point that lets technicians probe coil current without disturbing the control loop. Together, these impedance assignments coordinate fast response with stable regulation across the full 24 V supply and 3.2 A output envelope.