Isolator signal isolator-converter S25GI

galvanically-isolatedRS485

Overview
The S25GI Galvanic Isolator eliminates ground-loop failures and electrical faults in RS-485 networks by electrically separating communication and power paths while maintaining native Modbus RTU communication. It blocks surges, EMI, ESD, and voltage offsets without degrading signal quality, preventing a single grounding issue from disabling communication across an entire production line.

Key benefits

• Eliminates ground loops and electrical faults on RS-485/Modbus RTU networks.
• Maintains native Modbus RTU operation—no protocol changes required.
• Blocks surges, EMI, ESD, and voltage offsets while preserving signal integrity.
• Prevents single-point grounding/wiring failures from cascading across networks.

Integration and installation

• Connectorized inline IP67 design allows mounting directly on machines; connectors on both ends reduce need for field splicing.
• Integrates into existing RS-485/Modbus RTU architectures without PLC reprogramming or protocol changes.
• Compact inline industrial form factor fits panels and junction boxes and simplifies retrofits and distributed installations.
• Integrated 200 mA power pass-through supports multiple sensors, indicators, or I/O modules—reduces wiring complexity.

Typical applications

• Material handling systems spanning multiple power zones.
• Water treatment plants and distributed process networks.
• Production lines with high-power motor drives or other equipment that create differing ground potentials.
• High-availability, multi-segment Modbus RS-485 networks requiring fault tolerance and rapid network expansion.

Compatibility & system advantages

• Compatible with Banner's Snap Signal line and third-party RS-485 devices—supports mixed-power Modbus systems and multi-vendor deployments.
• Enables electrical segmentation so devices can be added or relocated without redesigning control logic or power distribution.
• Helps create fault-tolerant topologies that avoid disabling entire networks from a single grounding issue.

Caractéristiques / spécifications techniques

• Model: S25GI
• Function: Galvanic isolation for RS-485/Modbus RTU networks
• Communication: Native Modbus RTU over RS-485 (no protocol conversion)
• Protection: Blocks surges, EMI, ESD, and voltage offsets
• Power pass-through: Integrated 200 mA (suitable for multiple sensors/indicators/I/O modules)
• Enclosure / mounting: Connectorized inline industrial design, IP67-rated connectors for harsh environments
• Installation: Connectorized inline (no field splicing required); designed for retrofit and distributed system installations
• Compatibility: Banner Snap Signal devices and third-party RS-485 devices; supports mixed-power Modbus deployments
• Typical use cases: material handling, water treatment, production lines with high-power drives, multi-zone RS-485 networks
• Part number (from image alt): PN 818595