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          Active / Available from OEM
          Apter Power supports 3515 quotation, termination review, and documentation checks.

        3515

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        1001 reviews ｜ Need a Specific Revision?
        Triconex 3515 is a 32-channel TMR pulse-totalizer input module with independent 31-bit counters, 0–1 kHz inputs and hot-spare counter re-education.
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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.
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        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 3515

        • Manufacturer:
          Invensys
        • Part Number:
          3515
        • Product Family:
          Triconex
        • Product Type:
          TMR Pulse Totalizer Input Module
        • Stock:
          1
        • Model:
          3515
        • Architecture:
          TMR pulse totalizer
        • Counters:
          32 independent, non-commoned
        • Counter width:
          31 bits
        • Frequency range:
          0 Hz to 1 kHz
        • Minimum pulse width:
          300 microseconds
        • Active accuracy:
          ±2 counts
        • Maximum count:
          2,147,483,647
        • Worst-case overflow:
          596 hours at 1 kHz
        • Overflow indication:
          Counter changes to a negative integer
        • Counter reset:
          Individual reset per counter
        • Absolute maximum input:
          42.5 VDC
        • Count edge:
          Rising edge, Off to On
        • Off-to-On threshold:
          15 V typical; 18 V worst-case
        • On-to-Off threshold:
          8 V typical; 6 V worst-case
        • Typical hysteresis:
          4 VDC
        • Turn-on current:
          6 to 9 mA
        • Count input delay:
          Less than 15 ms
        • Point isolation:
          1,500 VDC minimum
        • Indicators:
          Point state plus PASS, FAULT, ACTIVE
        • Logic power:
          Less than 10 W
        • Field load:
          0.5 W per On point; 1.5 W at maximum voltage
        • Color code:
          Purple
        • 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 Monitoring Diagnostics Counter Integrity

        Features:

        • Implements thirty-two independent 31-bit pulse counters in a TMR input architecture.
        • Accepts input frequencies from 0 Hz to 1 kHz with a 300-microsecond minimum pulse width.
        • Transfers active counter values to a hot-spare module during online replacement.
        The current ordering configuration is 3515, the Tricon thirty-two-channel TMR Pulse Totalizer Input Module.

        It measures accumulated flow, events or per-unit sensor pulses and supplies voted count values for application processing.

        Before commissioning, verify pulse amplitude and width, source wiring, counter-reset logic, overflow detection and the required hot-spare behavior.

        Availability is subject to Apter Power inventory and sourcing confirmation.
        Verified resources for Triconex 3515: 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.
        • Accumulates flow-meter pulses for batch, throughput and material-balance functions in a Tricon application.
        • Counts discrete events from per-unit sensors where each channel must retain an independent total.
        • Supports protected online maintenance by transferring learned counter values to a configured hot spare.
        • The control program can read each voted total and reset one selected counter without clearing the remaining accumulated quantities.
        • A single application command may clear all thirty-two counters at an approved batch, transfer or startup boundary.
        • Overflow appears as a negative integer, allowing logic to distinguish counter wraparound from an ordinary positive process total.
        • Channel-to-channel count comparison checks agreement between the three isolated input-processing paths during operation.
        • PASS, FAULT and ACTIVE indications report module health, while each point has its own On or Off state indicator.
        • Failure of a channel diagnostic activates the module fault indication and the associated chassis alarm without redefining the field count.
        • Active-module accuracy is specified within two counts throughout the supported zero-to-one-kilohertz input range.
        • The 2,147,483,647 maximum count produces a worst-case overflow interval of 596 hours when pulses arrive continuously at 1 kHz.
        • A hot spare learns the active totals, with replacement error limited according to pulse frequency during the re-education interval.
        Description
        Triconex 3515 is a 32-point TMR pulse-totalizer input module with an independent 31-bit counter for every connected active-flow or per-unit sensor. Each rising-edge event contributes to an accumulated quantity that is processed by three isolated channels, voted and delivered to the Main Processors for control-program use. The module is intended for totalized event or quantity measurement rather than continuous speed calculation.

        Channel-to-channel comparison diagnostics monitor agreement among the three counting paths while the application reads the voted totals. Logic can clear one selected counter without disturbing the remaining process quantities, or reset all counters together at an approved batch, transfer or startup boundary. Overflow is represented by a negative integer, allowing the control program to distinguish counter wraparound from an ordinary positive accumulated value.

        The input range extends through 1 kHz and requires pulses at least 300 microseconds wide, so sensor waveform quality and switching levels must be verified before commissioning. Replacement planning should also consider the maximum count, overflow interval and the small count error possible while a hot spare learns the active totals. The spare should be allowed to complete re-education before maintenance personnel rely on its counters for a critical inventory or batch decision.
        Alternative Names
        3515 Triconex 3515 Invensys Triconex 3515 3515 Pulse Totalizer Triconex Model 3515 Triconex 3515 PTI Module Triconex 3515 32-Channel Pulse Totalizer Input Module
        Technical notes
        3515 counter overflow changes the value to a negative integer; application logic must detect this state and manage individual resets intentionally.
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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
        What happens when a 3515 counter reaches its 31-bit limit?
        The value rolls into a negative integer after 2,147,483,647, so application logic should alarm or reset before unintended overflow.
        How does a hot spare preserve 3515 totals?
        The spare re-educates its counter values from the active module, with the documented temporary count error depending on pulse frequency.
        Which measurement duties suit 3515 better than a standard DI?
        Use it where accumulated pulse quantity must be retained, such as flow totalization, event counting or per-unit production sensing.
        What affects a 3515 availability quotation?
        Exact model, revision, condition, verification requirement, quantity and shutdown delivery date are confirmed before supply.
        Can a frequency-input module replace 3515 without logic changes?
        Not automatically; counter width, voting, reset commands, overflow behavior, thresholds and hot-spare learning must all match.
        Which pulse details should be supplied with a 3515 request?
        State sensor type, voltage levels, pulse width, maximum frequency, channel count, reset strategy, ETP and hot-spare arrangement.

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