Honeywell CC-TDOB01 32-Channel 24VDC DO IOTA

Description

Key Technical Specifications

Honeywell’s Series C specification explicitly pairs CC-PDOB01 with CC-TDOB01 for the non-redundant configuration and CC-TDOB11 for redundant operation. The same specification identifies the output as source-type, with 32 channels and a 0.5 A maximum per channel.

Product Introduction

The Honeywell CC-TDOB01 is a 9-inch non-redundant IOTA for the Series C CC-PDOB01 32-channel bussed 24 VDC digital output module. It provides the field termination and power interface for source-type discrete outputs used with devices such as solenoids, relays, and indicator circuits. The CC-PDOB01 architecture includes electronic short-circuit protection and supports internal or externally supplied field power.

Installation & Configuration Guide

Stage 1 — Pre-Installation

1. Confirm that the installed I/O module is CC-PDOB01.
2. Verify that the cabinet requires a 9-inch non-redundant digital-output IOTA.
3. Confirm that the application uses bussed 24 VDC source outputs.
4. Record all 32 output-channel assignments, field-device tags, terminal numbers, and power-source arrangements.
5. Determine whether the field power is supplied internally by the Honeywell system or through an approved external 24 VDC source.
6. Back up the relevant Experion PKS configuration.
7. Photograph the existing terminal arrangement and power connections before removal.
8. Check the replacement IOTA for damaged terminals, corrosion, contamination, or evidence of rework.
9. ⚠️ Safety: Place affected output loops in the approved maintenance state before disconnecting field wiring.
10. Apply appropriate ESD controls when handling the IOTA and CC-PDOB01.

Typical preparation time: 15–30 minutes for a documented cabinet.

Stage 2 — Removing Old Module

1. Isolate the applicable system and field power according to the site maintenance procedure.
2. Verify that external 24 VDC power is de-energized and correctly isolated.
3. Record the internal/external power selection and wiring before disconnecting conductors.
4. Label every field conductor by output channel.
5. Photograph TB1, TB2, TB3, and power connections where applicable.
6. Disconnect field wiring without disturbing neighboring I/O circuits.
7. Remove the CC- module according to the Series C installation procedure.
8. Release the IOTA mounting hardware.
9. Remove the CC-TDOB01 and place it in ESD-safe packaging.
10. Inspect the cabinet connector and field terminals before installing the replacement.

⚠️ Critical: Honeywell documentation warns that reversed external 24 VDC power can damage the I/O module. Verify polarity before energization.

Stage 3 — Installing New Module

1. Inspect the replacement CC-TDOB01 before installation.
2. Verify the exact CC-TDOB01 model marking.
3. Mount the 9-inch IOTA in the designated Series C cabinet position.
4. Secure the assembly according to the applicable Honeywell installation procedure.
5. Install the compatible output module.
6. Reconnect the field conductors channel by channel against the wiring record.
7. Verify common-return and bussed-output wiring.
8. Confirm the field power source and polarity.
9. Verify that the expected 15–30 VDC load range is appropriate for the connected field devices.
10. Recheck every output termination before restoring power.
11. Do not substitute CC-TDOD01 or CC-TDOR01 based only on physical fit; the output topology and electrical characteristics differ.
12. If a redundant architecture is required, verify the cabinet and IOTA configuration before selecting CC-TDOB11 instead.

Honeywell identifies CC- as the non-redundant 9-inch IOTA for CC- and CC-TDOB11 as its redundant 12-inch counterpart.

Typical replacement time: 30–60 minutes, depending on field-wiring density.

Stage 4 — Power-On & Testing

1. Perform a final inspection of all output and power connections.
2. Confirm external 24 VDC polarity before energizing the I/O.
3. Restore power using the approved startup sequence.
4. Verify that CC- initializes without I/O diagnostics.
5. Check the configured output channels in Experion PKS.
6. Test representative outputs individually using an approved maintenance procedure.
7. Verify the expected field voltage at the load terminals.
8. Confirm that connected solenoids, relays, or indicators respond correctly.
9. Check for output-circuit, field-wiring, or short-circuit diagnostic messages.
10. If a short-circuit protection event occurs, locate and clear the field fault before attempting to restore the channel.
11. Confirm that the affected output returns to the intended control mode.
12. Compare all tested output states with the pre-maintenance record.
13. Return the equipment to normal service only after operator and control-engineering approval.
14. Record the replacement model, revision, traceability information, test results, and removed-part disposition.

The Series C 24 VDC digital-output architecture detects excessive output current and removes power from the affected channel. Honeywell documentation also describes Soft Failure 23 and Soft Failure 180 for the applicable short-circuit condition.

⚠️ Field warning: Do not treat a short-circuit-protected output as permission to leave a field fault connected. The protection circuit removes power from the affected channel; the wiring fault still needs to be identified and corrected before normal operation is restored.

CC-TDOB01

CC-TDOB01

Frequently Asked Questions (FAQ)

Q1: What is the Honeywell CC-?
CC- is a 9-inch non-redundant I/O termination assembly for the Honeywell Series C CC- 32-channel bussed 24 VDC digital output module.

Q2: How many outputs does the CC- support?
The associated CC- provides 32 digital output channels. The outputs are source-type and use a bussed 24 VDC architecture.

Q3: What is the maximum output current?
Honeywell specifies 0.5 A maximum per channel. It also specifies group and module current limits that depend on the number of simultaneous short-circuit conditions.

Q4: Is CC- redundant?
No. CC- is the 9-inch non-redundant IOTA. CC-TDOB11 is the corresponding 12-inch redundant IOTA for CC-.

Q5: Does CC- provide short-circuit protection?
Yes. The CC-/CC- architecture uses electronic short-circuit protection. When an excessive-current condition is detected, the affected output is de-energized until the field fault is corrected.

Q6: Can external 24 VDC field power be used?
Yes. Honeywell documentation describes both internal and external field-power arrangements for the bussed 24 VDC digital output architecture. When external power is used, polarity must be verified carefully before energization.

Q7: Is CC- the same as CC-?
No. CC- is the electronic digital output module; CC- is the associated 9-inch non-redundant IOTA. Both are required as part of the applicable Series C hardware configuration.