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        IC694ALG221A

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        GE IC694ALG221A is a PACSystems RX3i four-channel current analog input module for 4–20 mA or 0–20 mA field-signal acquisition.
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        Ships by Wednesday, October 28
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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 IC694ALG221A

        • Manufacturer:
          General Electric
        • Part Number:
          IC694ALG221A
        • Product Family:
          GE PACSystems RX3i
        • Product Type:
          GE IC694ALG221A PACSystems RX3i Current Analog Input Module
        • Stock:
          1
        • Input Channels:
          4 differential current inputs
        • Input Ranges:
          4–20 mA; 0–20 mA
        • Module Update Rate:
          2 ms
        • Resolution:
          12-bit
        • Input Resistance:
          250 ohms
        • Input Filter:
          325 Hz
        • Isolation:
          Optical, field inputs to backplane
        • Common-Mode Voltage:
          200 V
        • Power Requirement:
          Isolated 24 VDC
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • 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 Specifications Range Selection Backplane Power Product Applications

        Features:

        • Four current inputs: GE IC694ALG221A is based on the documented IC694ALG221 four-channel architecture.
        • Selectable ranges: supports 4–20 mA and 0–20 mA process-current signals.
        • RX3i integration: intended for PACSystems RX3i backplane operation.
        GE IC694ALG221A is the full installed model addressed here; Emerson’s official PACSystems catalog identifies the IC694ALG221 family as a four-channel current analog input module.

        The documented module architecture supports 4–20 mA and 0–20 mA input ranges with a 2 ms update rate, 12-bit resolution, and optical isolation between field inputs and the backplane.

        For GE IC694ALG221A installation, the backplane determines the 24 VDC power arrangement: a Universal Backplane requires an external isolated source, while an Expansion Backplane provides the isolated supply connection.

        Availability is subject to Apter Power's current inventory and sourcing confirmation.
        GE IC694ALG221A Manuals, Datasheets, Links 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.
        GE IC694ALG221A PACSystems RX3i Current Analog Input Module Specs

        General

        • ManufacturerGE / Emerson
        • ModelIC694ALG221A
        • ConditionNew Original ready stock
        • Product FamilyPACSystems RX3i
        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.

        Current-range selection

        • 4–20 mA: use the live-zero range where the project and transmitter are designed for it.
        • 0–20 mA: select this range only when the field loop and scaling require it.
        • Scaling record: keep the selected range with the controller project and loop documentation.
        • Fault review: an unexpected value should trigger range, polarity, power, and scaling checks.

        Backplane power arrangement

        • Universal Backplane: provide an external isolated 24 VDC source.
        • Expansion Backplane: use the documented isolated 24 VDC connection supplied by the backplane.
        • Isolation boundary: field inputs are optically isolated from the backplane.
        • Channel boundary: do not describe the four inputs as channel-to-channel isolated.

        Product applications

        • PACSystems RX3i: GE IC694ALG221A serves current-signal acquisition within the RX3i control platform.
        • Process loops: accepts documented 4–20 mA or 0–20 mA field signals.
        • Controller integration: converts four differential current inputs for backplane-based control processing.
        • Application boundary: loop power, range, scaling, and common-mode conditions must follow the installed project.
        Description
        GE IC694ALG221A is the full installed model addressed by this page; Emerson’s official PACSystems documentation identifies the IC694ALG221 family as a four-channel current analog input module for PACSystems RX3i systems.

        For process-current acquisition, GE IC694ALG221A supports 4–20 mA and 0–20 mA input ranges with a 2 ms module update rate and 12-bit resolution. The documented architecture provides optical isolation between field inputs and the backplane; it does not establish channel-to-channel isolation.

        Before installing GE IC694ALG221A, determine the backplane type and power arrangement. A Universal Backplane requires an external isolated 24 VDC source for the module, while an Expansion Backplane supplies the isolated 24 VDC connection.
        Revisions

        Revision Part #

        Also known as

        IC694ALG221A
        IC694ALG221-A, Series A, Rev A
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        IC694ALG221C
        IC694ALG221-C, Series C, Rev C
        Get Parts Quote
        IC694ALG221D
        IC694ALG221-D, Series D, Rev D
        Get Parts Quote
        Alternative Names
        IC694 ALG221A IC694ALG221-A GE FANUC IC694ALG221A Emerson IC694ALG221A IC694ALG221
        Technical notes
        GE IC694ALG221A requires the documented isolated 24 VDC arrangement: supply external isolated power in a Universal Backplane, while an Expansion Backplane provides it. Treat the four inputs as differential current channels with field-to-backplane optical isolation; do not assume channel-to-channel isolation during wiring or fault analysis.
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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
        Which field signals can GE IC694ALG221A accept?
        GE IC694ALG221A is documented for current inputs in the 4–20 mA and 0–20 mA ranges; the project configuration and loop wiring must use the intended range.
        When does GE IC694ALG221A need an external 24 VDC source?
        GE IC694ALG221A requires an external isolated 24 VDC source when installed in a Universal Backplane. An Expansion Backplane provides the isolated 24 VDC connection.
        Does GE IC694ALG221A isolate each input channel from the others?
        No channel-to-channel isolation is specified for GE IC694ALG221A. The official architecture describes optical isolation between the field-input section and the backplane.
        What should be checked if GE IC694ALG221A reports an unexpected current value?
        For GE IC694ALG221A, verify the selected 0–20 mA or 4–20 mA range, loop polarity, isolated 24 VDC supply, common-mode conditions, and scaling in the controller configuration.
        What installation records are useful before replacing GE IC694ALG221A?
        Record the GE IC694ALG221A label, backplane type, slot, terminal wiring, configured range, loop-power source, and controller project so the replacement can be reviewed without assuming the original setup.
        How should the A suffix on GE IC694ALG221A be handled during sourcing?
        Use the complete GE IC694ALG221A marking shown on the installed module. Official family documents for IC694ALG221 do not by themselves prove that a different suffix or unsuffixed unit is interchangeable.
        What update behavior should an engineer expect from GE IC694ALG221A?
        Official family documentation gives GE IC694ALG221A a 2 ms module update rate and 12-bit resolution; controller scan, scaling, filtering, and process-loop dynamics still affect the displayed response.

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