HONEYWELL SMOD3611000-1-CE Universal Safety Module (Safety Manager SIS SIL3 QMR I/O Signal Isolation Marshalling Module)
Manufacturer Background: Honeywell Process Solutions; SMOD series universal safety signal isolation & marshalling module, matched for Safety Manager (SM) QMR SIL3 SIS, FGS fire & gas, ESD emergency shutdown cabinet; CE certified EU hazardous area version, legacy industrial spare for petrochemical, offshore Zone2, power plant safety cabinets
Part Number Breakdown:
- SMOD = Safety Module (Universal Safety Isolation Marshalling Unit)
- 3611 = Core hardware series code
- 000 = Standard base hardware configuration
- 1 = Single channel isolation variant
- CE = CE compliance marking for European ATEX Zone2 hazardous locations
Product Type: Passive/active hybrid galvanic isolation signal marshalling module; dedicated to separate field safety signals (4–20mA analog, 24VDC discrete DI/DO) between field junction boxes and Safety Manager SDIO I/O racks; suppress common-mode noise, isolate field surge, prevent cross-circuit interference in SIS/FGS cabinet marshalling panels
Matching Platform: Honeywell Safety Manager QMR SIL3 SIS system, SIH33 / SIH34 safety rack series, SDIO safety digital/analog I/O cards; FGS fire & gas detection cabinet, ESD emergency shutdown marshalling cabinet, Experion PKS integrated safety control system; compatible with ATEX II 3G Zone2 hazardous control rooms
Core Hardware Overview:
1. Signal Isolation Architecture: Single independent galvanic isolation channel per SMOD3611000-1-CE unit; full transformer isolation between field side and system side, 2500V isolation withstand voltage
2. Supported Signal Types: 4–20mA analog safety signals, 24VDC dry contact discrete safety inputs/outputs for flame detectors, gas transmitters, ESD valves, trip switches
3. Surge & EMC Protection: Built-in gas discharge tube + TVS surge suppression, ESD 8kV contact protection, meets IEC 61000-6-2 industrial EMC
4. Mechanical Form Factor: Standard DIN rail 35mm horizontal mount compact module, low-profile cabinet space-saving design
5. Wiring Terminals: Screw ring lug terminals, wire range 0.5–2.5mm², anti-vibration locking screw design for offshore high-vibration environments
6. Status Indication: Front panel green POWER LED, red FAULT isolation breakdown indicator
7. Power Supply: 24VDC ±10% safety cabinet auxiliary power, low power consumption ≤1.2W per unit
8. Environmental Grade: CE / ATEX II 3G Zone2 certified; standard operating temp 0℃~+60℃, conformal coated ISA G3 anti-corrosion optional for offshore salt fog cabinets
9. System Compatibility: Simplex / redundant SIH33/SIH34 safety rack marshalling layout, direct drop-in replacement for aging SMOD series isolation modules
1. Product Overview
SMOD3611000-1-CE is Honeywell universal single-channel safety signal isolation marshalling module designed exclusively for Safety Manager SIL3 safety instrument systems (SIS), fire & gas (FGS) detection cabinets and ESD emergency shutdown marshalling panels for European industrial sites with CE ATEX hazardous area requirements.
As a key signal isolation buffer between field safety instruments and Safety Manager SDIO I/O modules, it adopts full transformer galvanic isolation to completely separate field-side surge, ground loop interference and high-frequency noise generated by large motors, VFD drives and plasma equipment. It eliminates ground potential difference common-mode offset which would cause safety signal drift, false trip or inaccurate gas/flame detection readings, critical for SIL3 safety loop integrity.
The CE suffix denotes full EU compliance certification, including ATEX II 3G Zone2 hazardous area suitability, LVD low voltage directive and EMC electromagnetic compatibility standards, suitable for offshore oil & gas, European refinery and chemical plant Zone2 control cabinets. Each unit handles one independent safety signal circuit (either analog 4–20mA or discrete 24VDC DI/DO), multiple modules can be densely arranged on DIN rail marshalling panels for multi-point safety signal concentration.
Built-in continuous self-check circuit monitors isolation transformer integrity; any insulation breakdown or power loss triggers front panel FAULT LED alarm and transmits fault status to Safety Manager via auxiliary contact signal for MES/HMI fault logging. DIN rail mounting enables quick installation and hot swap without shutting down the entire safety marshalling cabinet, minimizing plant maintenance downtime. Honeywell still supplies original spare inventory; refurbished fully tested SMOD3611000-1-CE units are widely used for legacy SIH33/SIH34 safety cabinet renovation and signal isolation expansion projects.
