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PRODUCT DESCRIPTION
Two serial interfaces for remote multiplexed digital I/O
ICS Triplex T3491 is a Regent multiplexed I/O interface that connects remote MIU equipment through two isolated RS-422 ports. It exchanges digital input and output data, supporting matrix or mimic displays and remote non-safety I/O rather than direct analogue measurement.
The isolated serial ports operate independently or as a duplex pair with two-out-of-two data testing. Multi-drop links serve remote MIU equipment, while front-panel indicators show transmit, receive and fault states. The interface is non-interfering rather than a safety-rated I/O path.
The isolated serial ports operate independently or as a duplex pair with two-out-of-two data testing. Multi-drop links serve remote MIU equipment, while front-panel indicators show transmit, receive and fault states. The interface is non-interfering rather than a safety-rated I/O path.
BEFORE YOU BUY
Confirm the complete installed configuration
ACTUAL APPLICATIONS
Where T3491 Fits in Industrial Production Facilities
Use spans process industries and utility facilities, subject to the installed hardware, connections and approved configuration.
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01 · CHEMICAL PROCESSING
Chemical Production Facilities and Process Operator Display Areas
Chemical production facilities with operator panels and status displays.Process operator areas with equipment annunciators and mimic displays. -
02 · OIL & GAS
Hydrocarbon Processing Sites and Petroleum Terminal Operating Areas
Hydrocarbon processing sites with plant annunciators and operator panels.Petroleum terminal operating areas with status displays and indicators. -
03 · WATER & WASTEWATER
Water Utility Facilities and Wastewater Plant Operator Areas
Water utility facilities with pumping indicators and operator panels.Wastewater plant operator areas with equipment annunciators and displays.
Technical specifications for T3491
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Product ModelT3491
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Product ParametersRegent multiplexed I/O interface module
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ManufacturerICS Triplex
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Serial interfaces2 isolated RS-422 ports
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Communication protocolSubset of the ICS2000 I/O communications protocol
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Operating modesTwo independent links or dual 2oo2 voted links
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Baud rates9600 or 19200 baud
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Documented cable reachApproximately 1220 m at 19200 baud; 2440 m at 9600 baud
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Remote I/O capacityUp to 12 MIU processors, 8 input units and 4 output units; point-definition restrictions apply
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Listed MIU equipmentMIU3201 processor, MIU3202 64-point input and MIU3204 64-point output
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MIU processor addressesUnique IDs 2-15, matching the hardware links
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Safetybus load1.0 load unit
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Isolation1000 V minimum: port-to-port and port-to-logic
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Heat dissipation4.5 W
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Slot keysUpper connector 4; lower connector 2
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Operating temperature0 to +60 degrees C
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Storage temperature-40 to +85 degrees C
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Relative humidity0-95%, noncondensing
View all additional
Alternative Names
T3491 Regent multiplexed I/O interface module
ICS Triplex T3491 remote MIU communications interface
T3491 Regent matrix display I/O interface
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
REGENT EQUIPMENT
Match T3491 to the documented Regent configuration
T3491 links Regent logic to the manufacturer-listed remote MIU processor and digital input/output units. Verify the configured topology, addresses, cable polarity and permitted point definitions; it is not a direct analogue I/O card.
Match the original RS-422 diagram, signal references and upper 4/lower 2 mechanical keys. Verify the listed MIU units, remote power provisions and the installed cable length and baud rate.
Check single or dual protocol, baud rate, unique MIU IDs and the hardware links against WINTERPRET definitions.
Features:
- Two isolated RS-422 communication ports
- Remote multiplexed digital I/O interface
- Independent or dual voted communication modes
The ICS Triplex T3491 regent multiplexed i/o interface module requires the appropriate mounting, connections and configuration to be verified before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Record the complete T3491 identity and compare its hardware revision with the installed item. Match the exact T3491 identity, upper 4/lower 2 keys, serial cables and remote MIU configuration. Preserve the documented non-safety I/O boundary and review remote latching outputs independently of chassis fault-mode selection.
Match the original RS-422 diagram, signal references and upper 4/lower 2 mechanical keys. Check single or dual protocol, baud rate, unique MIU IDs and the hardware links against WINTERPRET definitions.
Use the controlled manufacturer procedure and the approved maintenance plan. Module electronics faults and remote communication port faults have different indications. Check configuration and serial wiring before inferring a failed module.
Features:
- Complete order identity retained
- Companion equipment and configuration checked
- No unconditional substitution claim
The ICS Triplex T3491 regent multiplexed i/o interface module requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Amikon-authored summaries and manufacturer-hosted manuals are listed here. Check the complete product identity and document scope before use. Accessories and additional documents are included only when expressly listed in the quotation.
Features:
- Verify document identity before procurement or installation
- Match the complete order to the manufacturer document scope
- Accessories are supplied only when listed in the quotation
Documentation for the ICS Triplex T3491 regent multiplexed i/o interface module must be checked for document applicability before installation or commissioning.
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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 sizePacked dimensions unconfirmed
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Shipping weightGross weight unconfirmed
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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 reference8538900000
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OriginMexico
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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 T3491
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Is T3491 a direct analogue input or output module?
No. The manufacturer describes two RS-422 links to remote multiplexed digital MIU equipment. Direct 4-20 mA, voltage, RTD and analogue conversion specifications are not established for this product. -
Which remote equipment is listed?
MIU3201 processor units, MIU3202 64-point digital input units and MIU3204 64-point digital output units. Check the actual units and their matching manufacturer instructions. -
Does duplex mode establish safety-critical I/O capability?
No. The manual explicitly says dual 2oo2 communication voting is insufficient for Risk Class 5 safety-critical I/O. This product is described as non-interfering equipment for non-safety-critical points. -
Will the chassis shutdown jumper switch off remote MIU outputs?
No. The manufacturer states that remote MIU output circuits latch their last state during a system-level failure. The ordinary chassis shutdown setting does not turn these outputs off. -
Are all advertised remote points usable without restriction?
No. The first point on the first I/O unit must remain undefined. Also define output units before input units when they share an MIU processor; nominal capacity is not unrestricted usable point count. -
How are remote processor addresses selected?
Each MIU processor uses a unique ID from 2 to 15 that must agree with its hardware links. Match the single or dual protocol and baud rate in the configuration. -
What serial distances are documented?
Approximately 1220 m at 19200 baud or 2440 m at 9600 baud. These are manufacturer figures for the documented connection arrangement, not unconditional guarantees for arbitrary cable installations.
READY TO VERIFY YOUR PART?
Get a T3491 quote with price, lead time and revision check.
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