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8C-PAINA1
8C-PAINA1
8C-PAINA1

Honeywell 8C-PAINA1 16-Channel Analog Input Module

  • Model: 8C-PAINA1
  • Part Number: 51454470-175
  • Brand: Honeywell
  • Series: Honeywell Series 8 / Experion PKS
  • Core Function: Acquires 16 analog process current signals
  • Product Type: Single-ended analog input module
  • Key Specs: 16 channels | 4-20 mA | 16-bit A/D resolution
  • Configuration: Coated module
  • Condition: Verify stock condition before ordering

Honeywell identifies 8C-PAINA1 as a 16-channel single-ended analog input module without HART in its current Series 8 documentation.

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Description

Key Technical Specifications

Parameter Value
Module 8C-PAINA1
Order / Assembly Number 51454470-175
Module Type Analog Input, Single-Ended
Number of Channels 16
Input Type Current, 2-wire or self-powered transmitters
Input Range 4-20 mA through 250 Ω
A/D Resolution 16 bits
Module Supply Rating 24 VDC
Module Current Rating 105 mA
Input Scan Rate 50 ms
Operating Temperature 0 to 60 °C
Storage Temperature -40 to 85 °C
Maximum Input Voltage ±30 V
Hardware Accuracy ±0.075% FS at 23.5 ± 2 °C; ±0.15% FS from 0 to 60 °C
Galvanic Isolation 1,000 VAC RMS or ±1,000 VDC
Normal-Mode Rejection 19 dB at 60 Hz
Removal/Insertion Under-power removal and insertion supported
IOTA Compatibility 8C-TAIXA1 non-redundant; 8C-TAIXB1 redundant
HART Not supported

The electrical specifications above are taken primarily from Honeywell’s Series 8 documentation and a technical reproduction of the Honeywell specification.

Important specification note: Some third-party listings incorrectly describe 8C-PAINA1 as HART-capable. Honeywell’s 2024 Series 8 function matrix separates 8C-PAINA1 from 8C-PAIHA1: both provide 4-20 mA analog input, while HART is listed only for 8C-PAIHA1.

 

Product Introduction

The Honeywell 8C-PAINA1 is a coated, 16-channel single-ended analog input module for the Honeywell Series 8 I/O architecture. It accepts 4-20 mA signals from two-wire or self-powered transmitters and converts them through a 16-bit A/D converter for process control applications.

The module uses the 8C-TAIXA1 non-redundant or 8C-TAIXB1 redundant IOTA. It provides 50 ms input scanning, galvanic isolation, self-diagnostics, and under-power module removal/insertion capability according to the Series 8 specification.

8C-PAINA1

8C-PAINA1

8C-PAINA1

8C-PAINA1

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — About 5–10 Minutes

⚠️ Safety First: Although the Series 8 specification supports under-power module removal/insertion, follow your site’s approved maintenance procedure. Do not assume that hot removal is permitted for every plant configuration.

Tools Required:

  • ESD wrist strap
  • Multimeter
  • Appropriate screwdriver
  • Wire labels
  • Smartphone or camera
  • Approved maintenance documentation

Before removing the existing module:

  1. Record the existing 8C-PAINA1 model and assembly number.
  2. Photograph the installed module and IOTA.
  3. Record channel wiring and transmitter assignments.
  4. Record controller/I/O configuration from the engineering workstation.
  5. Confirm that the replacement is the same coated Series 8 module.
  6. Confirm whether the installation uses 8C-TAIXA1 or redundant 8C-TAIXB1 IOTA.

Stage 2: Removing the Existing Module — About 5 Minutes

  1. Place the process in the site’s approved maintenance state.
  2. Confirm the affected loops and alarms with operations.
  3. If the site’s procedure requires de-energization, isolate the appropriate power.
  4. Apply ESD protection.
  5. Release the I/O module according to the Series 8 installation procedure.
  6. Remove the module without applying lateral force to the connector.
  7. Inspect the IOTA and connector for contamination, bent contacts, or mechanical damage.

⚠️ Keep the removed module until commissioning is complete. Its labeling and physical configuration provide useful reference information.

Stage 3: Installing the New Module — About 5 Minutes

  1. Verify 8C-PAINA1 against the removed module.
  2. Confirm the correct IOTA configuration.
  3. Check that the module connector is clean and undamaged.
  4. Align the module with the IOTA.
  5. Seat the module firmly according to the Honeywell installation procedure.
  6. Confirm mechanical engagement.
  7. Verify that the module is correctly recognized by the Series 8 system.

The Series 8 specification identifies 8C-TAIXA1 as the 6-inch non-redundant IOTA and 8C-TAIXB1 as the 12-inch redundant IOTA for 8C-.

Stage 4: Power-On & Testing — About 10 Minutes

  1. Verify the module installation before returning the loop to service.
  2. Check module status indications.
  3. From the engineering workstation, verify that the expected I/O module is recognized.
  4. Confirm the configured channel count and signal assignments.
  5. Check representative 4-20 mA process values.
  6. Compare displayed values against the field transmitter or calibrated source.
  7. Verify alarms, ranges, scaling, and control-loop status.
  8. Return field loops to normal service one group at a time.
  9. Monitor the affected loops after restoration.

⚠️ Do not confuse 8C- with 8C-PAIHA1. If the application requires HART communication, the model selection must be checked before installation. Honeywell’s function matrix explicitly differentiates the two modules.

 

Frequently Asked Questions (FAQ)

Can the Honeywell 8C- be hot-swapped?

Honeywell’s Series 8 specification states that module removal and insertion under power is supported. However, plant maintenance procedures may impose additional restrictions. Follow the approved site procedure rather than treating the specification as permission to disturb a live process without authorization.

Does 8C- support HART?

No. Honeywell’s current Series 8 function matrix identifies as a 4-20 mA analog input without HART. The HART-capable single-ended equivalent is 8C-PAIHA1.

How many analog inputs does 8C- provide?

It provides 16 single-ended analog input channels. The specified input is current from two-wire or self-powered transmitters.

What IOTA should be used with 8C-?

The specified IOTAs are 8C-TAIXA1 for non-redundant installations and 8C-TAIXB1 for redundant installations. The latter is a 12-inch redundant IOTA.

What is the input signal range?

The documented input range is 4-20 mA through a 250 Ω input resistance. The module uses a 16-bit A/D converter and has a specified input scan rate of 50 ms.

Is 8C- the same as 8C-PAIHA1?

No. They are different Series 8 analog input modules. is the non-HART version, while 8C-PAIHA1 provides HART functionality. This distinction matters when replacing an existing module because selecting the wrong variant can remove a required field-communication function.

Is 8C- obsolete?

The Honeywell Series 8 specification currently lists as an active I/O module, including it in the 2024 Series 8 function matrix. Therefore, it should not be described simply as obsolete based on its age. Actual availability, manufacturing status, and replacement options should be verified against the current Honeywell supply channel before procurement.

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