EA-AC Automationdirect

EA-AC Automationdirect Programmable controller

Brand：Automationdirect Model number：EA-AC

Country of origin: United States Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

The EA-AC module provides a direct-attach power solution that mounts directly onto the back of compatible C-more touch panels using dedicated mounting flanges and terminal connectors. It bridges the gap between line voltage sources and sensitive touch panel electronics, supplying clean DC voltage directly to the panel's internal power bus. Built with integrated fault-handling features, the module protects data logging operations on CompactFlash or SD cards during unexpected momentary power outages. Its compact enclosure is passively cooled and engineered to fit seamlessly within the footprint of the HMI unit.

Product Parameters

Input Voltage Rating: 100 to 240 VAC universal input.
Input Frequency: 50 to 60 Hz.
Maximum Input Power: 68 VA or less.
Output Voltage: Regulated 24 VDC nominal (21.6 to 26.4 VDC range).
Output Current: 1.5 Amps maximum continuous output.
Permissible Power Failure: Withstands momentary dropouts up to 40 ms.
Thermal Protection: Integrated thermal shutdown at 140°C with auto-recovery.
Noise Immunity: 1000 VAC peak-to-peak with proper terminal grounding.
Dielectric Strength: 1000 VAC for one minute.
Supported Wire Gauge: Accepts 24 AWG to 14 AWG wiring.
Cooling Method: Natural convection air circulation.
Agency Approvals: UL Recognized (File E157382), CE compliant, RoHS compliant.
Dimensions: 3.00 inches Height x 3.66 inches Width x 1.42 inches Depth.

Product Advantages

A major advantage of the EA-AC power adapter is its space-saving form factor, which allows direct panel mounting without taking up additional DIN rail space inside the electrical enclosure.

It simplifies installation significantly by reducing control cabinet wiring, requiring only standard AC line connection directly at the HMI backplate.

The adapter features robust built-in protection mechanisms, including short-circuit protection, over-temperature auto-recovery, and electrical noise filtering to maintain continuous operation in severe industrial environments.

Additionally, the universal AC input range allows global deployment across different utility voltage standards without requiring external transformers or voltage selection switches.

Important Considerations and Precautions

Always ensure the primary AC power source is completely isolated before wiring or attaching the module to the touch panel to prevent electric shock or equipment damage.

Adequate clearance must be provided around the convection cooling vents of the power adapter to ensure proper heat dissipation and prevent thermal cutout.

Terminal mounting screws and flange screws must be torqued to specified limits (71 to 85 oz-in for connectors, 57 to 71 oz-in for mounting flanges) to guarantee secure electrical contact and physical attachment.

A proper ground wire connection to the AC terminal block is required to achieve full noise immunity and dielectric protection performance.

An external 3A fast-acting fuse should be installed on the AC input line for proper system protection.

Product Applications

The EA-AC power adapter is primarily used in automation systems where 24 VDC power is not available inside the control enclosure.

Standalone Machinery Enclosures: Powering C-more HMI panels on isolated machines that only receive standard single-phase AC line utility power.
Retrofit Control Panels: Upgrading older operator stations to modern touch panels without needing to install an additional 24 VDC DIN-rail power supply.
Remote Monitoring Stations: Providing direct AC-to-DC power conversion for operator interfaces in field enclosures, water treatment facilities, or HVAC equipment stations.
OEM Industrial Equipment: Simplifying internal cabinet layouts for machine builders by integrating power conversion directly onto the back of the panel display.

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