Merlin Gerin PB80 PLC Rack

The Merlin Gerin PB80 is a modular PLC rack system, comprising part numbers 60701 and 60716, designed for building flexible industrial control systems. This chassis provides the mechanical support and electrical backplane for hosting power supply units, CPU modules, and various I/O modules (digital, analog, and communication). It operates on 24 V AC or DC field power, offering versatility for different installation environments.

The rack features a rugged metal housing with multiple slots (typically 8 or 16, depending on the configuration), allowing users to populate modules as needed for their specific application. It includes a built‑in backplane with data and power buses, ensuring high‑speed communication between modules. The PB80 is designed for DIN‑rail or panel mounting, suitable for use in control cabinets in manufacturing, utilities, and building automation.

Technical Specifications

• Model: PB80 (60701 / 60716)

• Number of slots: 8 (or 16, depending on variant)

• Power bus: 24 V AC/DC (field power) and 5 V DC (logic backplane)

• Backplane bus: Parallel or serial (depending on CPU type)

• Mounting: DIN rail (35 mm) or panel with screws

• Dimensions: 260 x 150 x 120 mm (8‑slot version)

• Operating temperature: 0°C to +55°C

• Storage temperature: -25°C to +70°C

• Certifications: CE, UL, RoHS

Key Features

• Flexible configuration: Supports a wide range of Merlin Gerin and third‑party modules compatible with the PB series.

• Power distribution: The rack distributes power from the main supply to all modules, reducing external wiring.

• Slots for expansion: Additional racks can be connected via extension cables for larger systems.

• Identification labels: Each slot is clearly numbered for easy module placement and documentation.

• Robust construction: The metal chassis provides excellent mechanical stability and EMI shielding.

Typical Applications

• Modular PLC systems: Building custom control solutions for machinery and processes.

• Distributed control: Housing I/O modules in remote locations connected to a central CPU via fieldbus.

• Legacy system upgrades: Replacing older racks while reusing existing modules.

• Educational and training systems: Providing a hands‑on platform for learning PLC programming.

Installation and Module Population

Install the rack on a flat surface or DIN rail, ensuring adequate clearance for module insertion and removal. Insert modules by aligning them with the guides and pressing firmly until they click into place. Connect the power supply to the designated terminals (24 V AC/DC). If using multiple racks, connect the expansion cables between them. All modules are keyed to prevent incorrect insertion. After populating the rack, connect the field wiring to the module terminals. The rack provides a grounding terminal for safety.

Compliance

The PB80 rack complies with EN 61131‑2 and EMC standards, carrying CE and UL approvals. It is RoHS compliant and suitable for pollution degree 2.

Conclusion

The Merlin Gerin PB80 PLC rack offers a sturdy, modular foundation for building industrial control systems. Its flexible slot configuration, robust construction, and ease of installation make it a practical choice for system integrators and maintenance engineers.