Eberle MT42 Complete PLC Rack PLS514

The Eberle MT42 is a complete PLC rack system comprising a backplane chassis and power supply, model PLS514. It is designed for Eberle automation systems, which are used in building automation, HVAC, and industrial control. The rack provides slots for CPU modules, digital and analog I/O modules, and communication cards. The PLS514 includes an integrated power supply unit providing 24V DC to the backplane. The rack is DIN rail mountable and features a robust metal housing for industrial environments.

Technical Specifications

The PLS514 rack has 8 slots for Eberle MT42 series modules. Backplane bus is proprietary with 24V DC, 5V DC rails. Power supply input: 230V AC, 50/60 Hz, output: 24V DC 2.5A for modules and 5V DC 1A for logic. Dimensions: 280 mm × 160 mm × 120 mm. Weight: 3.2 kg. Operating temperature: 0-50°C. Storage: -20-70°C. Protection rating: IP20. The rack includes a fan for cooling (replaceable).

Key Features

• 8-slot rack for Eberle MT42 modules

• Integrated power supply (230V AC input, 24V DC output)

• Backplane with active bus termination

• DIN rail mountable

• Cooling fan and status LEDs

• Compatible with Eberle CPU and I/O modules

Compatible Modules

Eberle MT42 series modules include CPU-42, DI-42 (digital inputs), DO-42 (digital outputs), AI-42 (analog inputs), AO-42 (analog outputs), and communication modules (RS-232, RS-485, Ethernet). The PLS514 rack accepts any combination of these modules.

Applications

The MT42 rack is used in building automation (heating, ventilation, air conditioning), machine control, and process automation. The integrated power supply simplifies installation, reducing cabinet space.

Installation

Mount the rack on a 35 mm DIN rail. Connect mains power to the input terminals (L, N, PE). Insert modules into slots from left to right, starting with the CPU. Connect field wiring to the modules’ terminal blocks. The backplane automatically supplies power. The front panel LEDs indicate power and bus status.

Maintenance

Clean the fan filter periodically. If the power supply fails, the entire rack (or power supply module) must be replaced. No other user-serviceable parts.

Conclusion

The Eberle MT42 PLS514 PLC rack provides a complete chassis and power supply for building automation and industrial control applications. Its 8-slot capacity and robust design make it suitable for small to medium-sized systems.