Brief Product Description

Honeywell CC-TDOB01, part number 51308371-175, is simplex digital output IOTA terminal assembly for Honeywell Experion PKS Series C rack. It is field marshalling baseplate matched with CC-PDOB01 32-channel 24VDC bussed sourcing digital output IOM module. It provides terminal blocks for discrete output wiring to solenoid valves, relays and panel indicators. It adopts bus-powered sourcing output design, built-in group current limiting and short-circuit protection circuit, with open load detection function. It transmits logic output signals from IOM to field equipment via ribbon cable. Equipped with surge suppression and shield grounding terminals to reduce field interference. Fully tested surplus and refurbished Honeywell CC-TDOB01 (51308371-175) modules are available for legacy Experion PKS system maintenance, spare replacement and plant retrofit projects.

Core Product Functions

• Simplex 32-channel 24VDC bussed sourcing DO IOTA for Experion PKS Series C rack
• Field wiring terminal block for solenoid valves, control relays, indicator lamps
• Matched with CC-PDOB01 32-channel bussed sourcing digital output IOM module
• Bus group power supply design, built-in per-channel short-circuit protection and group current limit
• Open-load fault detection, onboard LED indicators for circuit and fault diagnosis
• Built-in surge suppression and shield grounding terminals for anti-interference
• Transmit discrete logic signals from IOM to field devices through dedicated ribbon cable
• 4 independent groups of 8 channels, convenient for field power partitioning
• Supports hot-swap replacement following LOTO safety procedures

Application Scenarios

• Legacy Honeywell Experion PKS C300 DCS discrete output wiring termination cabinet
• Thermal power plant boiler/turbine solenoid valve, alarm lamp and relay control termination
• Petrochemical, refinery plant sequence control, interlock actuation discrete signal wiring
• Oil & gas, pulp & paper plant field solenoid and relay output marshalling
• Metallurgy, water treatment equipment logic on/off control signal terminals
• Legacy Experion PKS simplex DO IOTA replacement, maintenance and plant retrofits

FAQ (Frequently Asked Questions)

• Q: DO channel no output or device not actuated after installing CC-TDOB01?
  A: Confirm IOTA matches CC-PDOB01 IOM, check 24VDC field bus power, load wiring, short-circuit and open-load alarm, shield grounding and ribbon cable connection.
• Q: Does Honeywell CC-TDOB01 support hot-swap replacement?
  A: Hot swap is supported. Risk assessment and LOTO lockout-tagout must be performed before replacement to avoid unexpected device action and plant disturbance.
• Q: What is the difference between CC-TDOB01 and CC-TDOB11?
  A: CC-TDOB01 is simplex DO IOTA; CC-TDOB11 is redundant DO IOTA for critical discrete control loops requiring IOM redundancy.
• Q: What IOM card matches this IOTA?
  A: Paired with CC-PDOB01 32-channel 24VDC bussed sourcing digital output IOM module.
• Q: Is Honeywell CC-TDOB01 (51308371-175) available for new DCS projects?
  A: This legacy Experion Series C IOTA terminal assembly is end-of-life for new installations. Only fully tested surplus and refurbished units are supplied for existing DCS system maintenance and retrofits.