8C-PDILA1 51454471-175
8C-PDILA1 51454471-175
8C-PDILA1 51454471-175
8C-PDILA1 51454471-175
8C-PDILA1 51454471-175
8C-PDILA1 51454471-175
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8C-PDILA1 51454471-175

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Honeywell 8C-PDILA1 51454471-175 is a coated 32-channel Series 8 module for acquiring 24 VDC discrete field signals with diagnostics and optional redundancy.
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Technical specifications for 8C-PDILA1 51454471-175

  • Manufacturer:
    Honeywell
  • Part Number:
    8C-PDILA1 51454471-175
  • Product Family:
    Honeywell Experion PKS ( C200, C300 )
  • Product Type:
    Digital Input Module
  • Stock:
    1
  • Input Channels:
    32
  • Voltage Rating:
    24 VDC
  • DI Power Voltage Range:
    18-30 VDC
  • Module Current Rating:
    95 mA
  • ON Sense Voltage/Current:
    13 VDC minimum or 3 mA minimum
  • OFF Sense Voltage/Current:
    5 VDC maximum or 1.2 mA maximum
  • Input Impedance:
    4.2 kΩ
  • System-to-Field Isolation:
    1000 VAC RMS or ±1500 VDC with external field power
  • Field Resistance for Guaranteed ON:
    300 Ω maximum at 15 VDC
  • Field Resistance for Guaranteed OFF:
    30 kΩ minimum at 30 VDC
  • Isolation Technique:
    Optical in IOM
  • Input Filter and Isolation Delay:
    5 ms ±20%
  • IOTA Modules:
    8C-TDILA1 non-redundant, coated, 9 in; 8C-TDILB1 redundant, coated, 12 in
  • Field Power Selection:
    Internal or external
  • Removal and Insertion Under Power:
    Supported
  • Estimated shipping dimensions:
    6x15.2x14.3cm
  • Tariff Code:
    8517795000
  • 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 Compatibility Monitoring & Control Diagnostics & Protection Installation

Features:

  • Direct or reverse indication for each discrete input
  • Internal excitation or an external 18-30 VDC field supply
  • 5 ms +/-20% input filtering and isolation delay
A field contact connected to 8C-PDILA1 51454471-175 is evaluated against defined ON and OFF thresholds before its state reaches the Series 8 control strategy. The module recognizes ON at 13 VDC or 3 mA minimum and OFF at 5 VDC or 1.2 mA maximum.

Direct and reverse indication let the reported logic state follow the required contact convention. The 4.2 kohm input path also separates field sensing from module logic through optical isolation.

Excitation can be supplied internally or from an external 18-30 VDC source. Selecting external power provides system-to-field galvanic isolation and changes how the input commons are wired.
The Honeywell 8C-PDILA1 51454471-175 Digital Input Module is listed as Active / Available from OEM. Apter Power can assist with product inquiries and access to available Honeywell documentation.
Honeywell 8C-PDILA1 51454471-175 Digital Input 24VDC, Coated 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.

Termination and redundancy:

  • Single path: 8C-TDILA1 is the coated 9-inch non-redundant IOTA for 8C-PDILA1 51454471-175.
  • Redundant path: 8C-TDILB1 is the coated 12-inch IOTA for redundant operation.
  • Channel count: Both arrangements terminate the module's 32 standard digital inputs.
  • Maintenance: Removal and insertion of the input module under power is supported.

Discrete-state thresholds:

  • ON state: 8C-PDILA1 51454471-175 recognizes 13 VDC or 3 mA minimum.
  • OFF state: The channel recognizes 5 VDC or 1.2 mA maximum as OFF.
  • Input impedance: Each sensing channel presents 4.2 kΩ.
  • Filter delay: Input filtering and isolation add 5 ms ±20% absolute delay.

Input-path checks:

  • Data integrity: 8C-PDILA1 51454471-175 includes internal diagnostics for discrete input acquisition.
  • ON resistance: Guaranteed ON requires field resistance no greater than 300 Ω at 15 VDC.
  • OFF resistance: Guaranteed OFF requires at least 30 kΩ field resistance at 30 VDC.
  • Optical barrier: The IOM uses optical isolation between field sensing and the module logic path.

Excitation arrangements:

  • Internal source: Onboard excitation lets 8C-PDILA1 51454471-175 operate without separate marshalling power.
  • External source: User-supplied field power is accepted from 18 to 30 VDC.
  • Isolation condition: System-to-field galvanic isolation is available when external field power is used.
  • Signal direction: Direct or reverse indication adapts the logic state to the field-contact convention.
Description
Within the Series 8 digital-input family, 8C-PDILA1 51454471-175 is the standard 32-channel input IOM; the adjacent 8C-PDISA1 and 8C-PDIPA1 codes cover sequence-of-events and pulse-accumulation functions instead. This distinction matters when replacing a module that must retain the original input behavior.

The coated 8C-TDILA1 nine-inch IOTA provides a non-redundant field termination path. A redundant installation uses the coated 8C-TDILB1 twelve-inch IOTA, so the installed base and cabinet space must match the required arrangement.

Guaranteed state recognition also depends on field-circuit resistance: an ON circuit is supported up to 300 ohms at 15 VDC, while an OFF circuit requires at least 30 kohms at 30 VDC. Internal diagnostics monitor the acquisition path, and removal or insertion of the IOM while powered is supported.
Alternative Names
8C-PDILA1 8C PDILA1 51454471 175 8CPDILA1 51454471175 Honeywell 8C-PDILA1 51454471-175 HON 8C-PDILA1 51454471-175 Honeywell 8C PDILA1 51454471 175 Honeywell Series 8 8C-PDILA1 Series 8 Digital Input 8C-PDILA1
Technical notes
Honeywell 8C-PDILA1 51454471-175 is a coated 32-channel 24 VDC discrete-input module with optical isolation and optional redundant termination.
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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.
Which IOTA assemblies pair with 8C-PDILA1 51454471-175?
8C-PDILA1 51454471-175 uses the coated 8C-TDILA1 9-inch non-redundant IOTA or 8C-TDILB1 12-inch redundant IOTA.
Can 8C-PDILA1 51454471-175 use external field power?
8C-PDILA1 51454471-175 can use an external 18 to 30 VDC field source, enabling system-to-field galvanic isolation.
Which levels are recognized as ON and OFF by 8C-PDILA1 51454471-175?
8C-PDILA1 51454471-175 senses ON at 13 VDC or 3 mA minimum and OFF at 5 VDC or 1.2 mA maximum.
Why would reverse indication be selected for 8C-PDILA1 51454471-175?
Reverse indication lets 8C-PDILA1 51454471-175 represent a normally closed field contact with the required logical state.
What isolation applies to 8C-PDILA1 51454471-175?
With external field power, 8C-PDILA1 51454471-175 provides 1000 VAC RMS or ±1500 VDC system-to-field isolation through its optical input path.
Can 8C-PDILA1 51454471-175 be removed while the rack is powered?
Honeywell specifies removal and insertion under power as supported for 8C-PDILA1 51454471-175 when the correct site maintenance procedure is followed.
What should be checked when 8C-PDILA1 51454471-175 does not detect a contact?
For 8C-PDILA1 51454471-175, check the field voltage, contact resistance, common wiring, direct or reverse setting, IOTA seating, and channel diagnostics.

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