MILESTONE ELECTRONICS
RS485 / RS422 Repeater (1 In & 1 Out, Isolated)
The LD-15UR is a reliable RS485 and RS422 repeater that regenerates and boosts serial communication signals, extending network reach while maintaining stable and secure data transmission through electrically isolated channels.
- Extends RS485 and RS422 communication networks by regenerating signals
- Electrically isolated input and output channels for protection against voltage spikes and ground loops
- Improves signal strength across long cable distances or multi-device networks
- Compatible with industrial automation, monitoring, and control networks
- Panel-mounted or enclosure-integrated installation for stable, organised wiring
Repeater
Industrial
Max Resolution
1080p Full HD
Audio Input
Stereo Analogue
Output
Single HDMI
- In-house manufactured
- 24hr response
- 2,000+ clients served
Product Overview
How the LD-15UR extends serial networks
The LD-15UR RS485 / RS422 repeater is designed to regenerate and boost communication signals in serial data networks. By receiving the incoming signal, strengthening it, and transmitting it to the output channel, the device helps extend communication distances and maintain reliable connectivity between devices.
RS485 and RS422 communication protocols are widely used in industrial automation, monitoring systems, and control networks because they support long-distance communication and provide strong noise immunity. However, as network length increases or the number of connected devices grows, signal quality can degrade. The LD-15UR solves this problem by repeating and restoring the signal before forwarding it to the next segment of the network.
The LD-15UR includes electrical isolation between the input and output communication channels. Industrial environments often contain electrical noise generated by motors, switching equipment, and high-power machinery. This isolation helps prevent such noise from interfering with communication signals and protects devices from voltage spikes or ground loop conditions that could otherwise disrupt system performance.
By isolating the input and output networks, the repeater ensures that communication signals remain stable and secure across different segments of the serial communication system. The device supports both RS485 and RS422 protocols, making it compatible with a wide range of industrial equipment and communication systems.
Protocol
Channels
Isolation
Signal Function
Mounting
Suitable For
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Key Features
Built for reliable industrial serial communication
Signal regeneration, electrical isolation, and broad protocol compatibility designed for demanding industrial environments.
Signal Repeating and Regeneration
The LD-15UR receives incoming RS485 or RS422 signals, regenerates them to full strength, and transmits the refreshed signal through the output channel. This restores signal integrity that would otherwise degrade over long cable distances or across multi-device networks.
- Receives and regenerates serial communication signals
- Restores signal quality before forwarding to the next network segment
- Maintains reliable data transmission across extended distances
Network Extension
By regenerating the communication signal, the LD-15UR allows RS485 and RS422 networks to extend over longer cable distances without degradation. This enables reliable communication between devices that are separated by distances exceeding the standard limits of the protocol.
- Extends communication distance beyond standard protocol limits
- Enables reliable communication in large-scale network deployments
- Supports multi-device serial networks
Electrical Isolation
The repeater provides electrical isolation between the input and output communication channels. This isolation protects connected devices from electrical noise, voltage spikes, and ground loop conditions that are common in industrial installations and high-power machinery environments.
- Isolated input and output channels
- Guards against voltage spikes and ground loop conditions
- Prevents electrical noise from disrupting communication signals
Dual Protocol Compatibility
The LD-15UR supports both RS485 and RS422 communication protocols, making it compatible with a wide range of industrial equipment and communication systems. This dual-protocol capability reduces the need for separate devices across mixed-protocol installations.
- Supports RS485 and RS422 protocols
- Compatible with industrial controllers, sensors, and data acquisition systems
- Reduces hardware complexity in mixed-protocol environments
Input Channel Signal Processing
The input channel receives RS485 or RS422 signals originating from industrial controllers, computers, sensors, or data acquisition systems. The LD-15UR detects and processes the incoming signal to ensure accurate data capture before regeneration and retransmission.
- Accepts signals from industrial controllers, computers, and sensors
- Processes incoming signal for accurate data transmission
- Compatible with a wide range of serial communication equipment
Reliable Serial Communication
The LD-15UR is designed to maintain reliable communication between devices connected through RS485 or RS422 networks. By combining signal regeneration with electrical isolation, the repeater improves the overall stability of serial communication systems in demanding environments.
- Stable data transmission across industrial network segments
- Improved communication reliability over extended cable runs
- Suitable for continuous operation in industrial installations
Installation
Panel-mounted for secure industrial integration
The LD-15UR is designed for straightforward installation within industrial enclosures and control panel environments, ensuring stable operation and organised wiring.
01
Panel Mounting
The LD-15UR is panel-mounted within system enclosures for secure installation. This mounting method ensures that the repeater is fixed firmly in place, maintaining stable connectivity and reducing the risk of signal disruption caused by loose or unsecured wiring within the installation environment.
02
Enclosure Integration
The repeater can be integrated into system enclosures for organised wiring in industrial installations. Enclosure integration keeps the device protected from physical interference and environmental conditions, contributing to long-term reliable operation in automation and control system deployments.
Where the LD-15UR performs
Designed for industrial environments where stable, extended serial communication is essential for continuous system operation.
Industrial Automation and Control Systems
Extend RS485 or RS422 communication networks between PLCs, controllers, and field devices in factory automation environments where signal regeneration is required across long cable runs.
Serial Communication Network Extension
Expand the reach of existing RS485 or RS422 serial networks beyond standard distance limitations, enabling reliable communication between devices distributed across larger facilities or multi-segment installations.
Building Management and Facility Monitoring
Support serial communication networks used in building management systems for HVAC, lighting control, access control, and environmental monitoring across large facilities with distributed equipment.
Data Acquisition and Instrumentation Networks
Maintain signal integrity in data acquisition systems that connect sensors, transducers, and instrumentation equipment over extended RS485 or RS422 networks in laboratory and industrial measurement environments.
Remote Monitoring and Industrial Communication
Enable stable serial communication between remote monitoring stations and field equipment in oil, gas, water treatment, and utility industries where long-distance network segments are required.
Process Control and Manufacturing Systems
Integrate the LD-15UR into process control networks on manufacturing lines to extend serial communication between supervisory systems and distributed control devices while protecting against electrical interference from high-power equipment.
Full specification sheet
- Protocol and Communication
- Input Channel
- Output Channel
- Isolation
- Installation
FAQs about the LD-15UR
What is the main purpose of the LD-15UR?
The LD-15UR regenerates and strengthens RS485 and RS422 communication signals, allowing networks to extend over longer cable distances without signal degradation. It receives the incoming serial signal, restores it to full strength, and retransmits it through the output channel to the next segment of the network.
How does the LD-15UR protect connected equipment?
It provides electrical isolation between input and output channels, protecting devices from electrical noise, voltage spikes, and ground loop issues common in industrial environments. This isolation ensures that disturbances on one segment of the network do not affect communication on the other segment.
Can the LD-15UR support both RS485 and RS422 protocols?
Yes. The repeater supports RS485 and RS422 communication protocols, making it compatible with a wide range of industrial devices and network systems. This dual-protocol support makes the LD-15UR suitable for installations that use either or both protocols within the same facility.
How is the LD-15UR installed?
The repeater is panel-mounted or integrated into system enclosures for secure installation and organised wiring, ensuring reliable and stable operation. This mounting approach is well suited to industrial control panels and equipment racks commonly found in automation and monitoring installations.
Which applications are suitable for the LD-15UR?
The LD-15UR is ideal for industrial automation, serial network extension, building management systems, process monitoring, data acquisition, and remote industrial communication systems. It is particularly effective in environments where long cable distances or high levels of electrical interference are present.
What types of devices can connect to the LD-15UR input channel?
The input channel accepts RS485 or RS422 communication signals from a variety of sources including industrial controllers, computers, sensors, and data acquisition systems. Any device that communicates over RS485 or RS422 can serve as the signal source connected to the LD-15UR input.
Why is electrical isolation important in industrial serial communication networks?
Industrial environments typically contain significant electrical noise generated by motors, switching equipment, and high-power machinery. Without isolation, this noise can corrupt communication signals or cause ground loop conditions that disrupt system performance. Electrical isolation breaks the conductive path between network segments, keeping signals clean and protecting sensitive equipment from damage due to voltage differences between connected systems.
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