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  • Lifecycle Status

    Discontinued / Obsolete by OEM
    Apter Power supplies Honeywell 10104/2/1 replacement modules for installed FSC systems, helping maintenance teams restore standard digital input capacity while planning longer-term platform migration.

10104/2/1

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Honeywell 10104/2/1 is a 16-channel digital input module that receives 24 VDC discrete signals for standard monitoring and control applications.
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Technical specifications for 10104/2/1

  • Manufacturer:
    Honeywell
  • Part Number:
    10104/2/1
  • Product Family:
    Honeywell FSC Series
  • Product Type:
    Digital Input Module
  • Stock:
    1
  • Approvals:
    CE, TÜV, UL
  • Supported Software Version:
    Version 3.00 or later
  • Space requirements:
    4 TE, 3 HE (4 HP, 3U)
  • 5 VDC Power Requirement:
    1 mA
  • Internal 24 VDC Power Requirement:
    35 mA
  • External 24 VDC Power Requirement:
    100 mA, including input currents
  • 5 VDC Ripple Limit:
    Less than 0.5 Vp-p from 0 to 360 Hz
  • Number of Input Channels:
    16
  • Nominal Input Voltage:
    24 VDC
  • Maximum Input Voltage:
    36 VDC
  • Input Current:
    7 mA at 24 VDC
  • Input HIGH Threshold:
    Greater than 15 VDC
  • Input LOW Threshold:
    Less than 9 VDC at less than 2 mA
  • Typical Input Delay:
    10 ms
  • Weight:
    0.12 kg
  • Estimated shipping dimensions:
    2 × 18.8 × 12.7 cm
  • Tariff Code:
    8538900000
  • 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 Installation Integration Applications System Integration

Features:

  • Sixteen 24 VDC channels for consolidated discrete input acquisition.
  • Defined HIGH and LOW thresholds with a typical 10 ms input delay.
  • Compact 4 HP, 3U format for compatible Honeywell FSC racks.
Honeywell 10104/2/1 consolidates sixteen 24 VDC digital input channels in one module. It can receive ordinary contact states and discrete operating indications in compatible FSC installations. Because the inputs are not internally tested, the module must not be assigned to fail-safe input functions.

Honeywell 10104/2/1 recognizes a HIGH state above 15 VDC and a LOW state below 9 VDC when input current is below 2 mA. Each input draws 7 mA at 24 VDC, the maximum permitted input voltage is 36 VDC, and the typical input delay is 10 ms.

Honeywell 10104/2/1 occupies 4 TE by 3 HE, equivalent to 4 HP by 3U. It requires FSC software version 3.00 or later and uses the specified A5 and C21 connector coding to support correct rack placement.

The 10104/2/1 Honeywell Digital Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell 10104/2/1 Digital Input Module 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.
Honeywell 10104/2/1 Digital Input Module Specs

General

  • Manufacturer Honeywell
  • Model 10104/2/1
  • Condition New Original ready stock
  • Product Family 10104/1/1,10101/2/1
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.
  • Install Honeywell 10104/2/1 only in an FSC rack position with the correct A5 and C21 connector coding.
  • Connect the sixteen field inputs through terminals IN 1 to IN 16 according to the official pin allocation.
  • Provide the specified internal and external 24 VDC supplies together with the 5 VDC system supply.
  • Use the Honeywell connection drawings for non-redundant, redundant, and FTA-based configurations.
  • Acquire ordinary switch, contact, and equipment-status signals in installed FSC systems.
  • Monitor non-safety operating states such as running, stopped, open, closed, ready, or alarm.
  • Restore standard digital input capacity when maintaining a compatible legacy FSC installation.
  • Exclude emergency shutdown or other fail-safe inputs that require internally tested diagnostic channels.
  • Use Honeywell 10104/2/1 with FSC software version 3.00 or later.
  • Verify that the rack connector uses large coding pins at A5 and C21 before insertion.
  • Maintain 5 VDC ripple below 0.5 Vp-p across the specified 0 to 360 Hz range.
  • Confirm whether the I/O arrangement is non-redundant or redundant before applying the relevant Honeywell wiring diagram.
Description
Honeywell 10104/2/1 is a 24 VDC digital input module for legacy Fail Safe Control installations. Honeywell 10104/2/1 provides sixteen channels for receiving standard discrete states from compatible field contacts and signaling devices. The inputs are not internally tested and therefore must not be used for fail-safe applications.

Honeywell 10104/2/1 recognizes an input HIGH above 15 VDC and an input LOW below 9 VDC when current is below 2 mA. Each channel draws 7 mA at the nominal 24 VDC input level, the maximum input voltage is 36 VDC, and the typical input delay is 10 ms.

Honeywell 10104/2/1 requires 1 mA from the 5 VDC supply, 35 mA from the internal 24 VDC supply, and 100 mA from the external 24 VDC supply, including input currents. Ripple on the 5 VDC supply must remain below 0.5 Vp-p from 0 to 360 Hz.

Honeywell 10104/2/1 occupies 4 TE by 3 HE, equivalent to 4 HP by 3U, and supports FSC software version 3.00 or later. Correct installation requires module connector holes and rack coding positions at A5 and C21, together with wiring appropriate to the selected FSC I/O configuration.
Alternative Names
10104/2/1 10104-2-1 10104 2 1 1010421 10104/2/1 12700 10104-2-1 12700
Technical notes
Honeywell 10104/2/1 has sixteen untested digital inputs and must not be used for fail-safe applications. Before replacement, isolate the affected circuits and follow the approved FSC maintenance, wiring, and redundancy procedures for the installed system.
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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 must Honeywell 10104/2/1 not be used for fail-safe applications?
Honeywell 10104/2/1 does not internally test its input channels. It therefore cannot provide the diagnostic coverage required for fail-safe signal acquisition, even when installed within an FSC system.
What should an engineer check before replacing Honeywell 10104/2/1?
Before replacing Honeywell 10104/2/1, verify the official type number 10104/2/1 12700, FSC software compatibility, A5/C21 connector coding, circuit isolation, field wiring, and the applicable Honeywell connection drawing.
Can Honeywell 10104/2/1 accept a signal higher than the nominal 24 VDC?
Honeywell 10104/2/1 has a maximum input rating of 36 VDC, but 36 VDC is a limit rather than a normal operating target. Connected field circuits should ordinarily use the specified 24 VDC signal level.
How should a purchaser assess a Honeywell 10104/2/1 replacement unit?
A purchaser should confirm the Honeywell 10104/2/1 identification, official type number 10104/2/1 12700, connector condition, revision markings, storage history, test documentation, warranty terms, and destination FSC rack compatibility.