Honeywell CC-TDI220, High-Voltage Digital Input IOTA, Experion PKS Series C

Description

Honeywell CC-TDI220, High-Voltage Digital Input IOTA, Experion PKS Series C

Core Product Overview

CC-TDI220 is a non-redundant digital input termination IOTA base for Honeywell Experion PKS Series C. It is used together with the matching digital input processor card, providing field screw terminals for high-voltage discrete signals (220VAC/240VAC), signal galvanic isolation, backplane power distribution and I/O Link bus interface to the C300 controller. It only handles field wiring termination and signal isolation; the digital logic acquisition circuit resides on the paired DI processor module. It is widely used for high-voltage contact/switch status acquisition in petrochemical and power plant DCS cabinets.

Main Technical Specifications

• Part Number: CC-TDI220, OEM PN:51308394-275
• Manufacturer: Honeywell
• Device Type: Series C High-Voltage Digital Input IOTA Termination Base
• Compatible Processor: Series C 32-ch digital input processor card
• Channel Count: 32 DI channels
• Signal Rating: 180~264VAC (220/240VAC nominal)
• Isolation: Galvanic isolation, 1500VAC RMS isolation rating
• Power Supply: 24VDC from Series C backplane
• Bus Interface: I/O Link to C300 controller
• PCB Coating: Conformal coated (CC prefix)
• Operating Temperature: 0 ~ +60°C
• Humidity: 10%–90% non-condensing
• Form Factor: Series C rack single-slot IOTA base
• Status: EOL, original production discontinued; spare stock available as new surplus or professionally refurbished bench-tested units

CC-TDI220

Same-Series Model Recommendations (8 Models)

• CC-TDI220: 220VAC DI IOTA (subject model)
• CC-TDI110: 120VAC /125VDC Digital Input IOTA
• CC-PDIL01: Low-voltage 24VDC DI processor card
• CC-TUIO31: Universal I/O IOTA base
• CC-PCNT01: 1st Gen C300 Controller
• CC-TCNT01: C300 controller IOTA base
• CC-PCF901: CF9 FTE Control Firewall
• FC-QPP-0001: Safety Manager SIS CPU

Professional Quality Control & Testing SOP

All surplus and refurbished Honeywell CC-TDI220 modules follow this inspection workflow:

1. Visual Inspection: Inspect PCB, gold edge fingers, screw terminal blocks, traces and soldering; verify Honeywell part label and revision.
2. Backplane Power Bench Test: Install on Series C carrier rack, apply 24VDC, confirm stable power rails, no overcurrent or short circuit.
3. Continuity Test: Check all field terminals and backplane pins for correct continuity, no open or short circuits.
4. Isolation Test: Verify high-voltage isolation between field AC side, 24V backplane and I/O Link bus.
5. I/O Link Communication Test: Mate with DI processor card, verify I/O Link communication to C300 controller.
6. Signal Sampling Test: Feed 220VAC contact signals, confirm correct on/off status acquisition.
7. Thermal Soak Test: Operate at upper rated temperature to expose intermittent terminal or contact faults.
8. Final Cleaning & Packaging: Clean gold fingers and terminals, inspect screw terminals, ESD packaging with printed test certificate.

New / Refurbished Module Installation Guidelines

1. Pre-Installation Safety: Execute lockout-tagout; isolate rack 24V supply and all 220VAC field wiring to prevent electric shock and unexpected system action.
2. Rack Check: Confirm compatible Series C carrier rack, protective earth and cabinet cooling airflow.
3. Mechanical Mounting: Slide CC-TDI220 into the rack slot and lock the latch.
4. Field Wiring: Connect AC contact/switch signals to screw terminals; strictly separate high-voltage AC wiring from low-level analog instrument cables.
5. Processor Card Installation: Insert the matching digital I/O processor onto the CC- IOTA and lock.
6. Offline Functional Test: Power rack offline, apply AC signal to channels, verify DI status reading in Experion PKS.
7. Commissioning & Acceptance: Perform channel loop checks, verify wire-break and diagnostic functions, archive loop drawings and test records.

Application Scenarios & Product Features

Typical Application Scenarios

• Experion PKS Series C DCS high-voltage discrete signal cabinets
• Power plant, refinery and chemical plant 220VAC auxiliary switch / contact status monitoring
• Retrofit and spare replacement for legacy Series C high-voltage DI racks

Core Product Features

• Dedicated 32-channel high-voltage AC digital input termination IOTA for Series C
• Built-in galvanic isolation to protect DCS backplane from AC field side surge
• Screw terminal blocks for 220VAC field contact wiring
• I/O Link bus connection to C300 process controller
• Conformal coated PCB suitable for humid or mildly corrosive cabinet environments
• Supports hot swap of the paired DI processor card with proper loop bypass
• Cannot work standalone; must be paired with Series C digital input processor card

Frequently Asked Questions (FAQ)

A1: CC- is for 220/240VAC high voltage DI; CC-TDI110 is designed for 120VAC /125VDC signals. They are not interchangeable due to different isolation and voltage circuits.

A2: Hardware slot fits, but signal circuit and isolation rating differ. Not a valid match for 24VDC low-voltage field signals.

Q3: Is the IOTA base itself hot-swappable? A3: The IOTA base is not hot-swappable. The DI processor card plugged onto it supports hot swap after field power isolation and bypass.

Q4: Is this a safety SIS module? A4: No, it is standard DCS I/O termination base. Honeywell SIL3 SIS uses Safety Manager FC-QPP-0001 series.

Q5: What are common failure modes? A5: Screw terminal loose contact, gold finger oxidation, isolation breakdown caused by surge, PCB trace corrosion, high-voltage leakage.