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March 26, 2025The single channel DIN Rail RS422 / RS485 Isolating Repeater type D1061S is used to separate Intrinsically Safe RS422 / RS485 equipment located in Hazardous Area from a RS232 / RS422 / RS485 controller located in Safe Area.
Stock: 2 available
D1061S GMI Fieldbus Isolating Repeater Module
The D1061S GMI is a high-performance, galvanically isolated fieldbus repeater and serial interface module designed to bridge safe area communications (RS232, RS422, RS485) with intrinsically safe (I.S.) field devices installed in hazardous industrial locations. Converting and isolating data signals seamlessly, the D1061S GMI enables reliable serial data exchange across SCADA, PLC, and telemetry control systems operating in Zone 2, Class I, Division 2 environments.
Engineered with 1.5 kV galvanic isolation between I.S. field connections, safe area ports, and power supply lines, the D1061S GMI repeater protects sensitive control electronics against ground loops, high-voltage surges, and signal interference. Supporting high-speed transmissions up to 1.5 Mbit/s with configurable DIP-switch settings, this module ensures fast dynamic response for long-distance industrial serial networks.
Key Features of the D1061S GMI Isolating Repeater
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Multi-Protocol Serial Support: Interfaces RS232, RS422, and RS485 safe area protocols directly with intrinsically safe RS422/RS485 field equipment
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High Transmission Speeds: DIP-switch configurable baud rates from 1.2 Kbit/s up to 1.5 Mbit/s for optimized serial loop communication
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High-Grade Galvanic Isolation: 1.5 kV isolation between I.S. circuits, safe area terminals, and 24 Vdc supply rails prevents transient noise coupling
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DIP-Switch Configurable Termination: Integrated 250 Ohm terminating resistors easily enabled via onboard DIP switches for line impedance matching
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Flexible Safe Area Cabling: Plug-in disconnect screw terminals (up to 2.5 mm²) alongside a standard SUB-D 9-pole female connector
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DIN-Rail Mount Enclosure: Compact 22.5 mm wide IP20 housing designed for fast TH 35 DIN-rail installation in control cabinets
Technical Specifications
| Specification | Value / Detail |
| Brand / Manufacturer | G.M. International (GMI) |
| Model / Keyword | D1061S GMI |
| Supply Voltage | 24 Vdc nominal (20 to 30 Vdc operating range) |
| Power Consumption | 100 mA typical (at 24V / 1.5 Mbps); 2.8 W max (at 30V) |
| Power Dissipation | 2.0 W typical |
| Hazardous Interface (I.S.) | RS422 / RS485 Intrinsically Safe (EIA RS422-A / EIA RS485) |
| Safe Area Interface | RS232 / RS422 / RS485 (EIA RS232-C / RS422-A / RS485) |
| Max Transmission Speed | Up to 1.5 Mbit/s (RS422/RS485); Up to 115.2 Kbit/s (RS232) |
| Max Cable Distance | ≤ 1200 m (93.75 Kbps), ≤ 1000 m (187.5 Kbps), ≤ 200 m (1.5 Mbps) |
| Terminating Impedance | 250 Ohm (DIP-switch selectable) |
| Galvanic Isolation | 1.5 kV (I.S. to Safe Area / I.S. to Supply); 500 V (Safe Area to Supply) |
| Safety Entity Parameters | Uo = 3.7 V, Io = 225 mA, Po = 206 mW, Ui = 30 V, Ii = 282 mA |
| Maximum Safety Voltage (Um) | 250 Vrms |
| Installation Location | Safe Area / Zone 2, Group IIC T4 / Class I, Div 2, Groups A, B, C, D |
| Enclosure Rating | IP 20 |
| Mounting Type | EN/IEC 60715 TH 35 DIN-Rail |
| Dimensions (W × D × H) | 22.5 mm × 99 mm × 114.5 mm |
| Weight | Approx. 170 g |
| Operating Temperature | -20°C to +60°C |
Package Contents
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1 × D1061S GMI Fieldbus Isolating Repeater Module
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Plug-in Disconnect Terminal Block Set
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Technical Installation Datasheet & Wiring Guide

