Product Description:

The EEA-PAM-118-A-30 is a power amplifier card produced by Vickers for the EEA-PAM Power Amplifiers series. It conditions command signals from programmable controllers and delivers regulated coil current to proportional hydraulic valves, allowing precise closed-loop motion or pressure control in industrial automation. The board’s Eurocard outline permits quick insertion into standard 19-inch racks, so multiple axes can be managed within the same cabinet.

This model conforms to the Eurocard format, which simplifies service because the card can be removed from a rack instead of being hard-wired into place. Incoming reference channels accept both voltage and current signals, letting the same card interpret 0–10 V or 4–20 mA commands without external converters. Output energy is modulated by Pulse Width Modulation (PWM), so changing duty cycle alters average coil current while keeping switching losses low. The card receives its control power from a single 24 VDC supply, reducing wiring complexity compared with multi-rail arrangements. For enclosure layout, the unit is intended for cabinet-mounted installation, so cooling airflow and noise-immunity planning assume placement on a backplane inside a sealed panel. User-facing monitoring points built into the front edge connector provide convenient oscilloscope access for setup and diagnostics.

An internal protection circuit trips during excessive load demand and recovers through an automatic reset, eliminating manual fuse replacement after short-term faults. Acceleration and deceleration profiles are shaped by a switchable ramp generator that can be enabled when gradual valve movement is needed to prevent hydraulic shock. Physical depth is 7.000 in, and front width is 1.590 in, so multiple amplifiers can fit side by side while leaving airflow gaps. The height is 5.000 in, which matches standard rack slots and preserves access to the user monitoring points on the front edge.