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          Active / Available from OEM
          Apter Power supports 3504E quotation, termination review, and documentation checks.

        3504E

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        1001 reviews ｜ Need a Specific Revision?
        Triconex 3504E is a 64-point commoned TMR digital input module configurable for 24 or 48 VDC service with per-point indication and online diagnostics.
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        Ships by Wednesday, September 30
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 3504E

        • Manufacturer:
          Invensys
        • Part Number:
          3504E
        • Product Family:
          Triconex
        • Product Type:
          High-Density TMR Digital Input Module
        • Stock:
          1
        • Model:
          3504E
        • Architecture:
          High-density TMR digital input
        • Input points:
          64 commoned, DC-coupled
        • Selectable nominal voltage:
          24 VDC or 48 VDC
        • 24 VDC input range:
          20 to 36 VDC
        • 48 VDC input range:
          40 to 72 VDC
        • Input over-range:
          115 VAC continuous; 150 VDC continuous
        • 24 V Off-to-On:
          15 V typical; 18 V worst-case
        • 24 V On-to-Off:
          8 V typical; 6 V worst-case
        • 48 V Off-to-On:
          27 V typical; 32 V worst-case
        • 48 V On-to-Off:
          14 V typical; 11 V worst-case
        • Input delay:
          Less than 10 ms in either direction
        • Point indicators:
          One per point
        • Module indicators:
          PASS, FAULT, ACTIVE
        • Nominal input impedance:
          Greater than 30 kΩ
        • Logic power:
          Less than 10 W
        • Maximum toggle rate:
          Once every 100 ms
        • Minimum toggle rate:
          Not required
        • Diagnostic glitch:
          1 ms every 2 to 3 seconds
        • Diagnostic output:
          0 or 5 VDC typical
        • Diagnostic output impedance:
          100 kΩ typical
        • Color code:
          Dark red
        • Tariff Code:
          8537101190
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Applications Performance Diagnostics Configuration

        Features:

        • Provides sixty-four commoned, DC-coupled digital inputs in one high-density TMR module.
        • Supports either 24 VDC or 48 VDC input ranges selected through TriStation 1131.
        • Performs periodic input diagnostics with one state indication for every field point.
        The current ordering configuration is 3504E, the sixty-four-point high-density Tricon TMR digital-input module.

        It concentrates DC field-status acquisition while retaining triplicated processing, processor voting and point-by-point indication.

        Before commissioning, set the intended voltage range, match the external termination panel, verify ballast resistance and test the configured diagnostic behavior.

        Availability is subject to Apter Power inventory and sourcing confirmation.
        Verified resources for Triconex 3504E: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Concentrates high-count 24 VDC contact and status inputs in space-limited Tricon cabinets.
        • Accepts 48 VDC field signaling where the higher switching thresholds and termination design are required.
        • Supplies TMR-voted discrete states for protective logic, sequence interlocks and plant shutdown monitoring.
        • Sixty-four input points provide high channel density while total logic-power demand remains below 10 watts.
        • Off-to-On and On-to-Off response times are each specified below 10 milliseconds for the selected operating range.
        • Nominal input impedance exceeds 30 kilohms, resulting in negligible field-power loading across the documented DC range.
        • The module continuously checks whether the Tricon controller can detect input transitions to the opposite state.
        • A brief diagnostic stimulus is applied periodically so the input path can be tested without replacing the reported process state.
        • Per-point state LEDs and PASS, FAULT and ACTIVE indications separate field changes from channel or module diagnostic events.
        • TriStation 1131 selects the 24 VDC or 48 VDC operating range, so the software setting must match the field supply.
        • The 24 V arrangement uses its designated commoned termination hardware, while the 48 V arrangement requires the corresponding higher-voltage panel.
        • Mechanical keying, cable interface and hot-spare position must be configured for the 64-point commoned DC-coupled module.
        Description
        Triconex 3504E is a 64-point high-density TMR digital input module whose 24 VDC or 48 VDC operating range is selected in TriStation 1131. Its commoned, DC-coupled architecture concentrates a large number of field indications in one rack position, while three independent channels scan the data for processor voting. The design supports applications where input density is important but the commoned wiring arrangement is acceptable.

        The module repeatedly verifies that the controller can recognize transitions to the opposite state, improving diagnostic coverage for densely wired field signals. Brief diagnostic stimulation is applied without replacing the process value reported to the application, and the front indicators separate individual point state from overall module health. Low input loading and short response times help the module monitor many DC contacts without imposing a large additional demand on the field supply.

        Voltage selection, switching thresholds and external termination hardware must be treated as one engineered configuration. Confirm whether the project uses the 24 V or 48 V range, the corresponding commoned termination panel, the approved cable and the reserved hot-spare position before replacement. A software selection that does not match field voltage can invalidate switching behavior even when the module is mechanically correct, so the TriStation setting should be checked against drawings and measured source conditions.
        Alternative Names
        3504E Triconex 3504E Invensys Triconex 3504E 3504 E 3504-E Triconex Model 3504E Triconex 3504E 64-Point Digital Input Module
        Technical notes
        3504E range selection is configured in TriStation 1131, and the correct external termination panel ballast resistance is part of the input circuit.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        How is the 24 or 48 V range chosen for 3504E?
        The installed range is selected in TriStation 1131 and must correspond to the field supply and termination circuit.
        Why does the 3504E external termination panel affect input impedance?
        The panel carries a ballast resistor that lowers the effective input impedance to align with other Tricon digital-input arrangements.
        Which project benefits most from the 3504E point density?
        It suits Tricon applications requiring many DC states in limited rack space without abandoning TMR processing.
        How is a 3504E procurement request qualified?
        Apter Power checks the exact model, revision, ETP, voltage setup, condition and required delivery against available supply.
        Can 3504E replace a 32-point module by matching voltage alone?
        No. Channel count, commoning, ETP, cabling, TriStation setup and diagnostic behavior all require an engineered change.
        What documentation package should be sent for 3504E?
        Include the TriStation voltage setting, chassis position, ETP and cable references, field supply, revision and point-assignment drawing.

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