3805E TRICONEX Analog Output Module

Triconex 3805E 4-20mA TMR Analog Output Module

Triconex 3805E 4-20mA TMR Analog Output Module

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TRICONEX 3805E Analog Output Module The TRICONEX 3805E, also cataloged as the TRICONEX 3805E Analog Output Module, operates as a...

رمز المنتج: 3805E

Manufacturer: Triconex
Product No.: 3805E
Product Type: Analog Output Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 4000g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

TRICONEX 3805E Analog Output Module

The TRICONEX 3805E, also cataloged as the TRICONEX 3805E Analog Output Module, operates as a dedicated hardware component for driving field devices with safe, redundant analog signals within Tricon 3000 Series SIS racks. The module converts internal processor variables into standard physical current loops to manipulate proportional control valves and positioners. It executes high-integrity loop command actions across safety-critical instrumentation paths.

Hardware Specifications

Parameter	Specification
Model	3624
Brand	TRICONEX (Schneider Electric)
Origin	United States
Weight	4 kg net weight (10 kg bulk shipping weight allocation)
Dimensions	177.8 mm x 101.6 mm x 228.6 mm (Note: Shipping dimensions are cataloged separately under a 9 kg structural package volume envelope)
Operating Temp	0 deg C to +60 deg C (32 deg F to 140 deg F)
Power Consumption	~6 W typical backplane draw @ 5 VDC
Output Channels	8 analog output points
Architecture	Triple Modular Redundancy (TMR)
Current Range	4-20 mA output nominal (+6% overrange capability up to 21.2 mA)
Circuit Coupling	Non-isolated points, commoned return, DC coupled
Resolution	12 bits
Output Accuracy	Less than 0.25% of Full Scale Range (FSR)
Over-Range Protection	+42.5 VDC continuous voltage block protection
Leg Switching Latency	Less than 10 ms typical upon individual leg failure
Visual Identification	Pea Green color code front fascia

Triple Modular Redundancy & Fail-Safe State Execution

Configured to guarantee fault-tolerant process control, the module relies on a hardware-based Triple Modular Redundancy (TMR) architecture. The execution path continuously processes variables across three independent internal logic legs, using integrated voter circuitry to output a single analog control signal. If an internal leg component experiences an electrical failure, the diagnostic framework detects the deviation and switches processing paths in less than 10 ms. This high-speed transition maintains the loop current without inducing process disruptions or allowing the system to drop out of its safe operating state. The DC-coupled circuitry features continuous +42.5 VDC over-range protection to guard the internal voting components against sustained back-EMF spikes from inductive field devices.

Frequently Asked Questions

Q: How does the commoned return configuration affect channel routing and electrical loop separation?

A: The 8 analog output channels share a commoned return path and are DC coupled rather than channel-to-channel isolated. Engineers must verify that all connected field devices (such as I/P transducers or valve actuators) share a compatible reference potential to prevent ground loops from degrading the 0.25% FSR output accuracy.

Q: What happens to the analog loop signal during an online hot-swap procedure?

A: During a hot-swap replacement, the module architecture utilizes the redundant slots on the Tricon baseplate. The replacement card must establish synchronized TriBus backplane communication and pass all internal diagnostics before the active unit hands over current loop control, preventing output bumps or spurious process trips.

Field Installation Guidelines

Commoned Line Configuration: Connect field instruments using a strict star-grounding topology back to the commoned return termination point to minimize electrical potential differences across the non-isolated channels.
Signal Path Shielding: Enclose all 4-20 mA loop lines in twisted, shielded pair cables. Ground the cable shields exclusively at the instrument enclosure chassis ground to suppress electromagnetic interference on the 12-bit conversion pathways.
Chassis Attachment Controls: Align the module straight within the single-slot rack guide tracks. Insert the card firmly until the high-density backplane pins engage fully with the TriBus socket, then secure the integrated retention screws to complete the frame installation.
Thermal Environment Controls: Maintain cabinet ventilation parameters to ensure local ambient temperatures do not exceed the +60 deg C upper limit, preventing thermal drift from degrading output accuracy.

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