Relay output expansion module, with Modbus RTU output, 4-channel, 4x1z 16A contact, 4 modules MAX-MR-RO-4

Relay Output Expansion Module – Expand the Capabilities of Your System

This 4-channel relay output expansion module MAX-MR-RO-4 from F&F Filipowski is an ideal solution for installers and users who need to increase the number of controlled circuits in automation systems. The module allows remote control of devices with a load of up to 16A per channel, and the Modbus RTU interface ensures easy integration with existing control systems.

Functionality and Application

The MAX-MR-RO-4 module is designed to expand building automation, industrial systems, and anywhere remote control of electrical loads is required. Thanks to four independent relay outputs, it can control lighting, heaters, valves, pumps, and other devices. Modbus RTU communication allows easy reading of output status and changing their configuration from the main control system.

• Versatility: Four independent channels allow control of different circuits.
• High load capacity: Relays with a load capacity of 16A allow control of most standard electrical devices.
• Easy integration: Modbus RTU interface ensures compatibility with a wide range of control systems.
• DIN rail mounting: Enables quick and easy mounting in control cabinets.
• Supply voltage 9…30 V DC: Provides flexibility in power supply selection.

Construction and Technical Parameters

The module has compact dimensions (70 mm x 90 mm x 65 mm) and is mounted on a standard DIN rail. The outputs are implemented using 1Z (NO – normally open) relay contacts, which means that the circuit is closed when the relay is activated. The module is powered by a DC voltage in the range of 9…30 V DC, which ensures compatibility with most available power sources. The module does not have built-in short-circuit protection for individual outputs, so it is recommended to use additional protection in the installation.

The module width is 70 mm, height 90 mm, and depth 65 mm. The DC supply voltage is in the range of 9…30 V, and the output current of a single channel is 16 A. Digital outputs are implemented using 1Z (normally open) relays, and the electrical connection is made via screw terminals. Communication with the module is via the Modbus RTU protocol.

The module is not intended for safety circuits and does not have redundant power supply. It also does not have configurable inputs or digital outputs. Its main task is to expand the control capabilities of an existing system by adding four independent relay outputs with a Modbus RTU interface. This simple solution allows for efficient energy management and process automation in various industrial and building applications.