Honeywell CC-PAOH01 4-20 mA Series C I/O Module

Key Technical Specifications

These values are from Honeywell’s Experion Series-C I/O Specification EP03-490-520, Version 1.5.

Product Introduction

The Honeywell CC-PAOH01 is a 16-channel high-level analog output module for Experion PKS Series-C systems. It provides 4-20 mA outputs for actuators, control devices, and recording or indicating equipment, while also supporting HART communication. Honeywell specifies optional redundancy, output readback, open-wire detection, and configurable per-channel fail behavior.

For replacement work, the IOTA is an important part of the hardware combination. CC-PAOH01 is documented with CC-TAOX01, CC-TAOX11, CC-GAOX11, and CC-GAOX21 configurations. Verify the installed IOTA before ordering a replacement module.

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — 5-10 minutes

⚠️ Safety First: Place the affected process in an approved safe state. Follow site lockout/tagout procedures and isolate the applicable I/O power before removing the module.

Tools Required

• ESD wrist strap
• Appropriate screwdriver
• Digital multimeter
• Wire labels
• Smartphone or camera
• Current Experion PKS configuration documentation

Data Backup

1. Record the complete CC-PAOH01 model and hardware revision.
2. Photograph the installed module and IOTA.
3. Photograph all field wiring.
4. Record channel-to-tag assignments.
5. Identify which output channels use HART.
6. Document the configured FAILOPT behavior for critical channels.
7. Confirm whether the installation uses redundant I/O.

Stage 2: Removing the Old Module — 5 minutes

1. Confirm the process is in a safe maintenance state.
2. Isolate the appropriate I/O power.
3. Identify the CC-PAOH01 and associated IOTA.
4. Label field wiring before disconnecting it.
5. Disconnect the field wiring carefully.
6. Release the module’s retaining mechanism.
7. Remove the module without stressing the IOTA or backplane connections.
8. Inspect connectors and the IOTA for damage or contamination.

⚠️ Do not select an IOTA by physical appearance alone. Honeywell lists specific IOTA combinations for CC-PAOH01, including both redundant and non-redundant configurations.

Stage 3: Installing the New Module — 5-10 minutes

1. Verify the replacement model is CC-.
2. Confirm the installed IOTA matches an approved CC- combination.
3. Verify whether the system is redundant.
4. Inspect connectors before installation.
5. Use ESD protection while handling the module.
6. Seat the CC- correctly.
7. Reconnect field wiring according to the approved Honeywell wiring documentation.
8. Verify output polarity and channel assignments.
9. Confirm the field load does not exceed the applicable output-load specification.

Self-Checklist

• CC- verified
• IOTA verified
• Redundancy arrangement verified
• 4-20 mA wiring checked
• HART channels identified
• Field loads checked
• FAILOPT settings documented
• Connectors fully seated

Stage 4: Power-On & Testing — 10-15 minutes

1. Perform a final wiring inspection.
2. Energize the I/O assembly according to the approved startup procedure.
3. Check module status indications.
4. Verify that Experion PKS recognizes the IOM.
5. Confirm the expected AO-HART configuration.
6. Command a low-risk output value.
7. Measure the actual loop current with an appropriate meter.
8. Verify the output scaling at representative points.
9. Check HART communication where applicable.
10. Verify output readback.
11. Check for open-wire or output-discrepancy diagnostics.
12. Confirm the configured FAILOPT behavior.
13. Return the loop to automatic control only after the output has been verified.

Honeywell documents FAILOPT as configurable per channel: the channel can be configured to hold its last value or shed to a defined safe value. If the IOM electronics fail, the output goes to zero, the specified safe state.

CC-PAOH01

CC-PAOH01

Frequently Asked Questions (FAQ)

Is CC- a HART analog output module?

Yes. CC- is Honeywell’s 16-channel High-Level Analog Output with HART for Series-C I/O. Its IOM block is identified as AO-HART.

How many analog outputs does CC- provide?

It provides 16 analog output channels, with a specified 4-20 mA output range.

What is the maximum load resistance?

Honeywell specifies a maximum resistive load of 800 Ω under the stated 24 V supply condition, with the supply specified as 22-28 VDC. Actual loop performance should still be checked against the complete field-loop design.

Which IOTA should be used with CC-?

Honeywell lists CC-TAOX01 and CC-GAOX21 for non-redundant configurations, and CC-TAOX11 and CC-GAOX11 for redundant configurations. Verify the exact installed hardware before ordering.

Can CC- be replaced by CC-PAOX01?

Do not treat the two models as functionally identical. Honeywell identifies CC- as the HART-capable AO module, while CC-PAOX01 is the non-HART analog output variant. If HART instruments are part of the application, the distinction is operationally important.

What happens if an output channel fails?

The Series-C AO module provides configurable FAILOPT behavior. A channel can be configured to hold the last value or shed to a safe value. Honeywell also documents output readback, discrepancy alarming, and open-wire detection.

Is CC- suitable for a legacy Experion PKS replacement?

Yes, it is documented as a Series-C I/O module for Experion PKS applications. For an actual plant replacement, verify the existing IOTA, redundancy architecture, Experion configuration, firmware/hardware revision, field-load resistance, HART requirements, and FAILOPT settings before installation.