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PRODUCT DESCRIPTION
3501E - TMR Digital Input Module
Triconex 3501E acquires thirty-two isolated, non-commoned 115 VAC/VDC digital inputs through a Triple Modular Redundant architecture. The documented operating range is 90-155 VAC/VDC at DC or 47-63 Hz.
Each input is independently conditioned and optically isolated before data is voted at the Main Processors. Model 3501E has a documented point-isolation minimum of 1500 VDC; preserve the exact model and termination arrangement during replacement.
Each input is independently conditioned and optically isolated before data is voted at the Main Processors. Model 3501E has a documented point-isolation minimum of 1500 VDC; preserve the exact model and termination arrangement during replacement.
BEFORE YOU BUY
Check the complete installed configuration
ACTUAL APPLICATIONS
Where isolated 115 VAC/VDC signals enter Tricon
The manufacturer documents isolated field-input acquisition, redundant processing and supported termination options. Validate the complete safety function before service.
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01 · FIELD STATUS
Acquire isolated discrete states
Read thirty-two separately isolated 115 VAC/VDC field states for the approved Tricon control application while preserving non-commoned wiring. -
02 · SAFETY LOGIC
Deliver voted input data
Use the triplicated input channels to condition each signal independently before the Main Processors vote the received data for the control program. -
03 · ONLINE MAINTENANCE
Support hot-spare exchange
Maintain availability through the documented hot-spare arrangement, approved external termination panel and mechanically keyed chassis slot.
Technical specifications for 3501E
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Product Model3501E
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Product ParametersTMR Digital Input Module
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ManufacturerInvensys
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Input architectureTriple Modular Redundant
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Input points32, non-commoned and isolated
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Nominal field voltage115 VAC/VDC
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Input operating range90-155 VAC/VDC
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Input frequencyDC or 47-63 Hz
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Maximum input voltage155 VAC/VDC
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Off-to-on switching levelLess than 86 VAC/VDC
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On-to-off switching levelGreater than 28 VAC/VDC
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Nominal turn-on current6-9 mA
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Typical hysteresis32 VAC/VDC
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Input transition delayOff to on <8 ms; on to off <15 ms
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Nominal input impedanceGreater than 8.5 kohm
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Field power per on point1.5 W nominal; 2.9 W at maximum voltage
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Diagnostic indicatorsOne input status per point; Pass, Fault and Active
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Point isolation minimum1500 VDC
View all additional
Alternative Names
3501E
Triconex 3501E
Tricon 115 VAC/VDC DI 3501E
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
SYSTEM CONFIGURATION
Match isolated inputs and field termination
Triconex 3501E acquires thirty-two isolated, non-commoned 115 VAC/VDC digital inputs through a Triple Modular Redundant architecture. The documented operating range is 90-155 VAC/VDC at DC or 47-63 Hz.
Each input is independently conditioned and optically isolated before data is voted at the Main Processors. Model 3501E has a documented point-isolation minimum of 1500 VDC; preserve the exact model and termination arrangement during replacement.
Confirm the 115 VAC/VDC signal range, independent point wiring and approved external termination panel before commissioning.
Features:
- 32 isolated non-commoned inputs
- Nominal 115 VAC/VDC field signals
- Triple Modular Redundant processing
The 3501E requires configuration and installation checks before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Preserve the exact 3501E identity and its 1500 VDC point-isolation rating. Verify the external termination panel and hot-spare state before removal.
Each input is independently conditioned and optically isolated before data is voted at the Main Processors. Model 3501E has a documented point-isolation minimum of 1500 VDC; preserve the exact model and termination arrangement during replacement.
Retain the validated safety logic and proof-test records. Recommission affected channels under the approved site procedure.
Features:
- 32 isolated non-commoned inputs
- Triple Modular Redundant processing
- Hot-spare module support
The 3501E requires replacement verification of field voltage, point isolation, termination-panel wiring and restored channel status before commissioning.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: The Manufacturer's Manual download is a manufacturer technical-data extract, not a complete operation manual. The installation guide contains only source-supported checks. Specifications of other configurations shown on source pages must not be applied to this exact order.Features:
- Sources: Invensys Tricon Technical Product Guide, 9791007-024 Rev 0, November 2012
- Use complete equipment instructions for installation and commissioning.
- Accessories are supplied only when listed in the quotation
Documentation for the 3501E is supplied here as a technical-data extract; confirm manual availability in the written quotation.
Also searched as
Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size49 × 45.3 × 6.8 cm
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Shipping weight2.80 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8537101190
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OriginUSA
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
Antistatic protection -
Tracking supplied
Established couriers -
Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 3501E
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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How many field inputs does 3501E provide?
The 2012 Tricon Technical Product Guide lists 3501E as a 32-point, non-commoned and isolated digital input module. -
What field voltage range should be checked for 3501E?
The documented input range is 90-155 VAC/VDC, with a maximum of 155 VAC/VDC. Confirm the actual field signal and supply tolerance. -
Which frequency sources can 3501E monitor?
The exact-model table supports DC or AC inputs from 47 to 63 Hz. -
What termination hardware must be reviewed before replacing 3501E?
Confirm the installed external termination panel and cable interface against the manufacturer field-termination table; a similar-looking module alone is not proof of interchangeability. -
Why must the point-isolation rating be matched for 3501E?
The guide specifies 1500 VDC minimum for this exact model. This value distinguishes the model variant and must not be replaced by the rating of the other 3501 version. -
What should receiving inspection verify on 3501E?
Check the exact model label, keyed chassis interface, connector condition and all thirty-two point positions before disturbing the installed module. -
How should a hot-spare replacement of 3501E be approached?
Confirm the spare is Active and follow the approved Tricon maintenance procedure, changing only one module at a time and proving affected input states afterward. -
What indicates normal module status after installing 3501E?
Verify the documented Pass and Active indications, confirm no Fault indication remains, and functionally test every affected field input before returning the loop to service.
READY TO VERIFY YOUR PART?
Get a 3501E quote with price, lead time and revision check.
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