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900C73R-0100-44

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Honeywell 900C73R-0100-44 is a ControlEdge HC900 two-port I/O scanner that connects one remote I/O rack to the redundant controller network.
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Technical specifications for 900C73R-0100-44

  • Manufacturer:
    Honeywell
  • Part Number:
    900C73R-0100-44
  • Product Family:
    Honeywell ControlEdge HC900
  • Product Type:
    HC900 Two-Port Redundant I/O Scanner
  • Stock:
    1
  • Controller Platform:
    ControlEdge HC900
  • Module Function:
    Remote-rack I/O scanning
  • Communication Ports:
    2
  • Redundancy Role:
    Redundant I/O network paths
  • Rack Assignment:
    1 scanner per remote I/O rack
  • Supported Remote Rack Sizes:
    4, 8, or 12 I/O slots
  • Redundant-Power Rack Sizes:
    8 or 12 I/O slots
  • Terminal Block Requirement:
    No separate terminal block for scanner
  • Configuration Scope:
    Complete remote I/O rack
  • Weight:
    0.705 lbs (0.32 kg)
  • Tariff Code:
    85389091
  • 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 Remote Rack Role Redundant Ports Rack Assembly Replacement Checks

Features:

  • One two-port scanner connects each remote I/O rack to the redundant HC900 controller network.
  • The scanner represents the complete rack rather than an individual analog or digital channel.
  • Remote I/O values travel to the controller while output commands and status return through the configured paths.
Honeywell 900C73R-0100-44 coordinates the communication boundary between one remote rack and the redundant controller.

Both ports of 900C73R-0100-44 must match the network topology, cabling, and rack assignment stored in the project.

The I/O cards beside 900C73R-0100-44 retain their own terminal blocks and field wiring.

The Honeywell 900C73R-0100-44 ControlEdge HC900 Two-Port Redundant I/O Scanner may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell 900C73R-0100-44 ControlEdge HC900 Two-Port Redundant I/O Scanner Manuals,Datasheets,Link 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.

One Scanner for Each I/O Rack

  • Rack assignment: Each remote I/O rack uses one scanner module.
  • Rack scope: The scanner exchanges data for every configured module installed in its rack.
  • Input direction: Analog and digital input values move from the rack toward the controller.
  • Output direction: Controller commands return through the scanner to the rack output modules.

Two Network Paths to the Controller

  • Port count: Two communication ports create the redundant rack-network connection.
  • Path identity: Both links belong to the same scanner and remote-rack assignment.
  • Failure isolation: A single-path fault is investigated without treating the rack I/O cards as the first cause.
  • Topology match: Cable routing and controller-side connection must follow the saved redundant topology.

Scanner, Power and I/O Relationship

  • Rack sizes: HC900 remote assemblies are selected with 4, 8, or 12 I/O slots.
  • Power arrangement: Selected standard or redundant power hardware supplies the rack backplane.
  • I/O modules: Analog and digital cards occupy rack slots and connect to their own terminal blocks.
  • Scanner terminal: The scanner itself does not require a separate field terminal block.

Identity and Configuration Retention

  • Article identity: The complete 900C73R-0100-44 code must match the required redundant scanner.
  • Rack mapping: The configured rack number and installed module order must remain unchanged.
  • Port wiring: Both network paths must return to their documented controller-side connections.
  • Commissioning: Controller diagnostics should confirm the rack and every configured I/O module after exchange.
Description
Honeywell 900C73R-0100-44 is a two-port I/O scanner for a ControlEdge HC900 remote I/O rack in a redundant controller assembly. One scanner is assigned to each remote rack so the controller can exchange process data with the installed I/O modules.

The two communication ports of 900C73R-0100-44 provide the redundant rack-network paths. Both paths must follow the controller topology and address plan, because the scanner represents its entire remote rack rather than one individual field channel.

Within the rack, 900C73R-0100-44 works alongside the selected power supply and the analog or digital I/O cards. Field signals enter through those I/O modules; the scanner transfers their values and status toward the controller and returns output commands to the rack.

A replacement 900C73R-0100-44 must retain the exact scanner identity, rack assignment, and redundant-path wiring used by the HC900 configuration. Terminal blocks belong to the I/O cards, while the CPU, scanner, and power-supply cards do not require separate terminal blocks.
Alternative Names
900C73R010044 900C73R 0100 44 900 C73R 0100 44 Honeywell 900C73R-0100-44 900C73R-0100-44 HC900 I/O Scanner 9OOC73R-0100-44 900C73R-O1OO-44 900C73R-0I00-44
Technical notes
One 900C73R-0100-44 scanner represents each remote rack, while its two ports maintain the configured redundant network paths to the controller.
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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.
Why can one port of 900C73R-0100-44 fail while the remote rack remains online?
The second network path of 900C73R-0100-44 can maintain rack communication, so inspect the failed cable, port, and controller-side connection separately.
What should be checked when 900C73R-0100-44 does not recognize its remote rack?
Verify the 900C73R-0100-44 rack assignment, module order, power supply, backplane seating, network paths, and the downloaded HC900 configuration.
Why must 900C73R-0100-44 be matched by its complete suffix?
The full 900C73R-0100-44 identity defines the required two-port redundant scanner; a similar HC900 code can represent a different controller or rack role.
Does 900C73R-0100-44 require a field terminal block?
No. Honeywell maps 900C73R-0100-44 as the rack scanner; terminal blocks are selected for the installed I/O cards instead.
What must be recorded before replacing 900C73R-0100-44?
Record the 900C73R-0100-44 rack number, two port connections, controller topology, power arrangement, slot order, and active diagnostics before removal.
Why can all channels in one rack fault together after changing 900C73R-0100-44?
Because 900C73R-0100-44 represents the complete remote rack, an address, backplane, power, or network mismatch can affect every installed channel.