Name: Triconex 3564 24 VDC Single Digital Input Module
Brand: TRICONEX
SKU: 2918751
Price: 1 USD
Availability: InStock

Product Description

The Triconex 3564 is a 24 VDC single digital input module for Tricon v9-v11 systems. Its 64 commoned input points accept discrete states from field contacts and sensors, then deliver those states to the controller so the control program can evaluate plant conditions.

For every connected point, the Triconex 3564 conditions the field voltage through threshold detection and optical isolation before three independent intelligent I/O controller channels read the result. Each channel has its own input multiplexer, microprocessor, memory, and bus transceiver, so the conditioned state travels separately over the A, B, and C legs of the triplicated I/O bus.

Unlike a TMR digital input module, the Triconex 3564 uses a single field input circuit feeding those three processing channels. The module is intended for safety-critical service where lower hardware cost is prioritized over the maximum availability of a TMR input, and a hot-spare module can be fitted when the control program is prepared for a possible brief Off report during changeover.

Technical Specifications

Technical Item	3564
Brand	Triconex
Product Type	24 VDC single digital input module
System	Tricon v9-v11 Systems
Input Points	64
Point Organization	Commoned
Recommended Input Range	15 to 30 VDC
Maximum Input Voltage	36 VDC
Off-to-On Switching	12 VDC typical; 15 VDC worst case
On-to-Off Switching	8 VDC typical; 6 VDC worst case
Typical Hysteresis	4 VDC
Nominal Turn-On Current	2 to 3 mA
Nominal Input Impedance	Greater than 3.0 kΩ
Input Delay	Less than 2 ms, Off-to-On and On-to-Off
Point Isolation	Optically isolated, 1,500 VDC minimum
Logic Power	Less than 10 W
Nominal Field Power Load	0.2 W per On point; 0.5 W at maximum field voltage
Status Indicators	One On/Off indicator per point; Pass, Fault, Active, and Power indicators

Three-Channel Signal Processing

A field contact connected to the 3564 does not feed the controller bus directly. The module first establishes a clean, isolated input state and then gives the same conditioned point to three separately controlled processing paths.

Field conditioning

The IN and RTN path passes through threshold detection and an opto-isolator. The return is common to all 64 points, while each point keeps its own input-state path.

Independent A, B, and C processing

Three input multiplexers feed three microprocessors. Each controller channel maintains its own processing and memory path instead of sharing one processor result.

Triplicated bus transfer

Separate bus transceivers place the three processed results onto the A, B, and C legs of the triplicated I/O bus for transfer into the Tricon system.

Self-Test, Status, and Fault Response

The 3564 supervises the input circuit with optically isolated test relays and completes its diagnostic sequence every 500 ms. The resulting status is separated into point-level indications and module-level operating indications.

Stuck-state detection

Test ON and Test OFF relays exercise the point circuitry so a contact path that remains forced On or Off can be detected without using the normal field state as the only check.

Fail-safe point reporting

When the diagnostic logic identifies a point fault, the affected input is reported Off. A hot-spare changeover can also produce a brief Off report, so the control program must handle that transition where a momentary state change matters.

Point and module status

Individual indicators show the On/Off state of points 1 through 64. Pass, Fault, Active, and Power indicators provide a separate view of the module's operating condition.

Frequently Asked Questions

Can Triconex 3564 be used as a direct replacement for a TMR digital input module?

No. Triconex 3564 has a single field input circuit feeding three processing channels, while a TMR input module uses redundant input circuitry to provide a different availability profile. Confirm the module type, termination hardware, slot plan, and control-program response before treating any TMR model as an interchangeable part.

Why can Triconex 3564 report an input Off after a detected point fault or hot-spare changeover?

Triconex 3564 uses an Off result as its fail-safe response when point diagnostics identify a fault. A hot-spare switch-over can also create a brief Off report, so logic that reacts to short state changes should be reviewed before the spare is placed in service.

What should be checked when a Triconex 3564 point indicator stays Off although the field contact is closed?

Measure the field voltage across the assigned IN and RTN path and confirm that the common return is intact before moving the wiring. If the field level reaches the expected input range, compare the point indicator with the module Pass, Fault, Active, and Power indicators to separate a point-wiring issue from a module condition.

How should rapidly changing contacts be evaluated before they are connected to Triconex 3564?

The input diagnostic limit allows the field state to toggle no faster than once every 100 ms. If the field source changes more quickly, verify that both the process logic and the diagnostic behavior remain suitable instead of assuming that every transition will be supervised in the same way.

How can technicians distinguish a field-point issue from a module-wide issue on Triconex 3564?

Use the numbered point indicator to check the state of the specific input and use the Pass, Fault, Active, and Power indicators for the overall module. A single dark point LED with normal module indicators directs the check toward the field circuit, while a module status change calls for a broader slot and system check.

What wiring information should be recorded before moving field circuits to Triconex 3564?

Record every point number, its field source, the shared RTN connection, and the actual input voltage before disconnecting conductors. Also retain the slot and termination-hardware identification so the 64 commoned inputs are not reassigned by position alone during the move.

Quality & Warranty

MOORE AUTOMATION

https://www.mvme.cn/

Moore Automation checks product condition, identification labels, and supplied accessories before packing. Inspection findings remain connected to the order record so the dispatched item can be traced to the same confirmed requirement.

One-year warranty coverage is linked to the corresponding order record. Packing is reviewed before carrier handoff to protect the product and keep its identification visible through shipment.

Incoming inspectionCondition and supplied items are checked.

Label traceabilityProduct markings remain visible in the record.

Packing reviewProtection is checked before dispatch.

One-year warrantyCoverage stays linked to the order.

Product Name	Triconex 3564 24 VDC Single Digital Input Module
Item NO.	2918751
Weight	0.1 kg = 0.2205 lb = 3.5274 oz
Category	TRICONEX
Brand	TRICONEX
Creation Time	2026-10-12

Triconex 3564 24 VDC Single Digital Input Module Item NO.: 2918751

Triconex 3564 24 VDC Single Digital Input Module