Unitronics M91-R1 PCB Relay Board Unitronics M91 Micro-OPLC Controllers

Description:

The Unitronics M91-R1 PCB Relay Board is an internal relay output circuit board used in Unitronics M91 Micro-OPLC controllers to provide relay-based output switching for industrial automation and machine control systems. Commonly installed in manufacturing equipment, packaging machinery, process control panels, and OEM automation systems utilizing the Unitronics M91 platform. Maintenance technicians, OEMs, and system integrators use this relay board for replacement, repair, retrofit, and refurbishment of existing M91 controller assemblies.

Applications:

The Unitronics M91-R1 PCB Relay Board is designed for use within Unitronics M91 PLCs controlling conveyors, pumps, packaging machines, HVAC equipment, material handling systems, and factory automation processes where relay outputs are required to operate contactors, solenoids, indicator lights, alarms, and other field devices. 

Technical Specifications:

• Brand: Unitronics
• Part Number: M91-R1
• Product Type: PCB Relay Board
• Compatible Series: Unitronics M91 Micro-OPLC Controllers
• Board Function: Internal relay output circuit board
• Output Technology: Electromechanical relay switching
• Intended Installation: Internal replacement PCB for M91 controllers
• Supports relay-based control of industrial field devices
• Designed for OEM machine control and automation systems
• Compatible with Unitronics M91 controller architecture
• Used in repair, maintenance, and refurbishment applications
• Suitable for packaging, process control, and factory automation equipment
• Engineered for continuous-duty industrial operation
• Designed for replacement and retrofit of damaged relay board assemblies

Common Replacements:

• Unitronics M91-P2 Display Board
• Unitronics M91-2-R1 Micro-OPLC Controller
• Unitronics M91-2-R2C Micro-OPLC Controller