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PRODUCT DESCRIPTION
3502E - TMR Digital Input Module
Triconex 3502E acquires thirty-two nominal 48 VAC/VDC digital inputs commoned in groups of eight. Its self-test checks the ability to detect a normally energized circuit changing to the off state.
The recommended field range is 35-95 VAC/VDC, with DC or 47-63 Hz input frequency. Assess threshold margin, grouping and diagnostic coupling against the connected circuit instead of substituting the ratings of a 24 V input module.
The recommended field range is 35-95 VAC/VDC, with DC or 47-63 Hz input frequency. Assess threshold margin, grouping and diagnostic coupling against the connected circuit instead of substituting the ratings of a 24 V input module.
BEFORE YOU BUY
Check the complete installed configuration
ACTUAL APPLICATIONS
Where 3502E monitors 48 V discrete circuits
The original manual identifies AC/DC input limits and self-test behavior. Validate the field circuit and diagnostic interactions before service.
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01 · 48 V STATUS
Acquire the intended voltage class
Read field status within the recommended 35-95 VAC/VDC range. Check the voltage actually delivered at the input and preserve the four groups of commoned connections. -
02 · TRIP TRANSITIONS
Check a normally energized input
Use the documented self-test behavior when monitoring loss of an energized signal. Include the applicable input-transition delay in the complete engineered response. -
03 · SHARED SIGNALS
Assess diagnostic coupling
Review an adjacent de-energized point that shares a circuit with another receiver. The manufacturer warns that diagnostic glitch output can falsely energize a paralleled external input.
Technical specifications for 3502E
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Product Model3502E
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Spare Model7400090-85
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Product ParametersTMR Digital Input Module
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ManufacturerInvensys
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Input points32, commoned in groups of 8
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Nominal field voltage48 VAC/VDC
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Recommended input range35-95 VAC/VDC
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Maximum input voltage95 VAC/VDC
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Input frequencyDC or 47-63 Hz
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Off-to-on threshold27 VAC/VDC typical; 32 VAC/VDC worst-case
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On-to-off threshold14 VAC/VDC typical; 11 VAC/VDC worst-case
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Typical hysteresis7 VAC/VDC
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Nominal turn-on current6-9 mA
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Nominal input impedanceGreater than 2.9 kohm
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Input transition delayOff to on <8 ms; on to off <15 ms
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Optical isolation1000 VAC minimum; 1500 VDC minimum
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Logic powerLess than 10 W
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Field power per on point1.0 W nominal; 3.2 W at maximum field voltage
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Diagnostic glitch duration20 ms typical
View all additional
Alternative Names
3502E
Triconex 3502E
Tricon 3502E
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 the installed field I/O arrangement
Triconex 3502E acquires thirty-two nominal 48 VAC/VDC digital inputs commoned in groups of eight. Its self-test checks the ability to detect a normally energized circuit changing to the off state.
The recommended field range is 35-95 VAC/VDC, with DC or 47-63 Hz input frequency. Assess threshold margin, grouping and diagnostic coupling against the connected circuit instead of substituting the ratings of a 24 V input module.
Document field wiring and the approved application settings before exchange. Use the complete Tricon system installation procedure and verify affected circuits after replacement.
Features:
- 32 inputs in groups of eight
- Nominal 48 VAC/VDC circuits
- 35-95 VAC/VDC recommended range
The 3502E requires configuration and installation checks before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Preserve the exact 3502E identity and the installed field termination. A similar Tricon module number does not establish interchangeability.
The recommended field range is 35-95 VAC/VDC, with DC or 47-63 Hz input frequency. Assess threshold margin, grouping and diagnostic coupling against the connected circuit instead of substituting the ratings of a 24 V input module.
Retain the validated safety logic and proof-test records. Recommission affected channels under the approved site procedure.
Features:
- 32 inputs in groups of eight
- 35-95 VAC/VDC recommended range
- Continuous normally-on transition test
The 3502E requires replacement verification of field wiring, load or signal limits, termination and configured diagnostics 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 v9-v10 Planning and Installation Guide, 9720077-012, February 2009
- Use complete equipment instructions for installation and commissioning.
- Accessories are supplied only when listed in the quotation
Documentation for the 3502E is supplied here as a technical-data extract; confirm manual availability in the written quotation.
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 weight3.00 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 3502E
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Is the dark-red 3502E intended for the same nominal voltage as 3503E?
No. The front panel and exact specification identify 3502E as nominal 48 VAC/VDC, whereas 3503E is a different voltage model. -
What margin is available between the recommended minimum and worst-case turn-on threshold?
The table lists 35 VAC/VDC as the recommended minimum and 32 VAC/VDC as the worst-case off-to-on threshold. Assess wiring and supply losses against those separate values. -
What voltage can the diagnostic glitch present to an adjacent de-energized point?
The specification gives less than half of the energized-point input voltage, with output impedance below 4.22 kohm, for the typical 20 ms diagnostic glitch. -
Could another device interpret that diagnostic glitch as a genuine input?
Yes. The manufacturer specifically warns that the glitch output may falsely energize the paralleled input of another item of equipment. -
Does the on state require the same manual diagnostic exercise as the off state?
No. The table requires no minimum on-state toggle interval but specifies manual toggling every three months for the off state. -
How is leakage to chassis specified for an energized point?
The maximum is 0.5 mA per on point at 60 Hz. This is a chassis-leakage specification, not the nominal input turn-on current. -
Can field load be estimated from the logic-power figure alone?
No. Logic power is below 10 W, while field loading is separately listed as 1.0 W per on point nominal and 3.2 W at maximum field voltage. -
Which fault should be resolved before changing an I/O module?
If both a field fault and module fault are present, the manufacturer instructs resolving the field fault first. A faulty connected device may otherwise leave the problem after replacement.
READY TO VERIFY YOUR PART?
Get a 3502E quote with price, lead time and revision check.
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