Description

The TDO340 is a dependable 4-channel SPST relay output module that utilises the Modbus RTU protocol. It features independent contacts and allows you to configure relay safety statuses both at startup and in the event of communication loss, enhancing system security. The module includes a watchdog function to monitor for communication failures and ensure a quick response, maintaining operational safety. With its non-volatile memory, the TDO340 retains relay states, restoring them automatically after power cycles.

This module is an ideal relay output extension for Modbus RTU master devices, supporting up to 63 nodes via its RS485 interface. It also includes an LED indicator for communication status, a wide 5vDC supply voltage range, and reinforced isolation for relay contacts for added safety. Installation is straightforward thanks to a built-in 120-ohm termination resistor and DIN rail mounting, and firmware updates can be easily performed via the interface, simplifying maintenance.

Features

• RS485 interface supporting up to 63 nodes
• Non-volatile memory to retain relay status
• LED indicator for communication status
• Wide supply voltage range, starting form 5vDC
• Watchdog functionality for communication loss
• Reinforced isolation for relay contacts
• Non-volatile memory for settings storage
• Built-in 120ohms termination resistor
• Easy DIN rail mounting
• Firmware update via the interface

Applications

• Control and monitor machinery, conveyors, and other equipment in manufacturing environments
• Manage lighting, HVAC, and security systems in commercial buildings
• Integrate with power distribution systems to control circuit breakers and monitor energy usage
• Operate pumps, motors, and valves in remote or hard-to-reach locations
• Interface with power grid components for load management and distribution automation
• Control irrigation systems, greenhouse climate control, and livestock management
• Manage traffic signals, street lighting, and other roadside equipment
• Automate the operation of pumps, valves, and filtration systems in treatment facilities

Specifications