Honeywell CC-TDOB11 51308373-175 DO 24V Buss IOTA

Overview

The Honeywell CC-TDOB11 (part number 51308373-175) is a 32-Channel 24V Digital Output IOTA (Input/Output Termination Assembly) for Honeywell Experion™ PKS Series C distributed control systems. It provides bussed digital output signals for driving field devices such as solenoids, relays, and indicators in redundant configurations.

Technical Specifications

• Manufacturer: Honeywell
• Model: CC-TDOB11
• Part Number: 51308373-175
• Type: 32-Channel 24V Digital Output IOTA (Redundant)
• Output Type: Source (for driving solenoids, relays, etc.)
• Output Channels: 32
• Load Voltage: 15–30 VDC (max)
• Output Current (per channel): 0.5 A absolute max
• Output Current (per 8 channels): 4 A (no short conditions)
• Output Current (per module): 6 A (no short conditions)
• Short Protection: Per-channel current limiting
• Galvanic Isolation: 1500 VAC RMS or ±1500 VDC
• On-State Voltage: 24 V typical (at 0.5 A load)
• Off-State Leak Current: 5.0 µA max
• Turn-On/Turn-Off Time: 10 ms max
• Redundancy Gap: 0 ms (bumpless failover)

Key Features

• 32-channel high-density digital output for maximum I/O capacity
• Redundant IOTA design with bumpless 0 ms failover
• Per-channel short-circuit protection with automatic current limiting
• Galvanic isolation protects against ground loops and transients
• On-board excitation power eliminates external marshalling

FAQ

Q: What is the maximum current per channel?
A> Each channel supports up to 0.5 A absolute maximum, with 4 A per 8-channel group.

Q: Does this IOTA include the electronics module?
A> No, the CC-TDOB11 is the termination assembly. The digital output electronics module (e.g., CC-PDOB01) mounts on this IOTA.

Q: Can I use this for 24VDC relay coils?
A> Yes, the 24 VDC sourcing output is ideal for driving standard industrial relay coils and solenoids.

Installation Guidelines

1. Mount the CC-TDOB11 IOTA on a DIN rail or panel.
2. Install the paired digital output electronics module onto the IOTA.
3. Connect 24 VDC field power to the IOTA power terminals.
4. Route field wiring through the cabinet gland and terminate per channel.
5. Verify output operation via Experion PKS diagnostics.

Selection Tips

• Order CC-TDOB11 for redundant 32-channel digital output termination in Experion PKS.
• Verify total load current (6 A max per module) does not exceed capacity.
• Always pair with the correct Series C digital output electronics module.