Description

Emerson SS3101 Single‑Channel Safety Signal Isolator

Technical Specifications

• Product Model: SS3101
• Brand: Emerson
• Warranty: One Year
• Input Voltage: 16‑35 V DC loop‑powered
• Operating Temperature: ‑40 °C ~ +85 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Signal update <100 ms
• Protection Class: IP20 DIN‑rail mount signal isolator
• Accuracy Class: ±0.1 %FS safety‑signal‑conversion grade
• Output Frequency: Not applicable
• Rated Current: Loop‑powered, no separate power‑supply required
• Signal Interface: 1‑channel input: 4‑20 mA HART compatible; 1‑channel output:4‑20 mA
• Isolation: 1500 V AC input‑to‑output‑to‑power three‑way reinforced isolation
• Diagnostics: Continuous input‑output‑internal‑circuit monitoring
• Safe‑State Behaviour: Configurable upscale / downscale / hold last value under fault conditions
• Mounting: Standard DIN‑rail mounting
• Certifications: CE, ATEX, IECEx, FM, IEC‑61508 SIL‑2 certified
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.22 kg
• Dimensions: 12.5 × 114 × 115 mm
• 

Product Overview

SS3101 is loop‑powered single‑channel safety signal isolator for safety‑instrumented systems. It provides galvanic isolation between hazardous‑area field transmitters and safe‑area SIS / DCS control‑system inputs, supporting HART smart‑transmitter signal pass‑through. Under input‑open‑circuit, short‑circuit or internal‑hardware fault events, the unit forces output into user‑predefined safe‑state to avoid misleading safety‑system logic judgements. Continuous self‑diagnosis monitors circuit health in real‑time. DIN‑rail compact design saves cabinet installation space. Widely stocked as new‑old‑stock and refurbished spare‑parts for process‑plant safety‑loop upgrade and maintenance projects.

Application Notes

‑ Loop‑powered device; external auxiliary power supply is not needed. ‑ Set safe‑state parameter according to site safety‑logic requirement during commissioning. ‑ Install on standard DIN‑rail inside control cabinet; follow ATEX/IECEx installation rules for hazardous‑area applications. ‑ Typical deployment: refineries, chemical‑plants, pharmaceutical‑plants safety‑loop signal‑isolation spare‑part stocking.

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