Honeywell CC-TDOR01 51308376-175 Relay Output Module

The Honeywell CC-TDOR01 51308376-175, also cataloged as the CC-TDOR01 Relay Output Module, operates as a dedicated hardware component for discrete load switching and field-level isolation execution within Honeywell Experion PKS Series C DCS platforms. It drives solenoid valves, interposing relays, and high-current electrical loads by converting logic commands into electromechanical contact actuation across system backplane interfaces.

Hardware Specifications

Channel-to-Channel Isolation & Galvanic Protection

The Honeywell CC-TDOR01 incorporates channel-to-channel and channel-to-system galvanic isolation rated up to 1500 VAC RMS (+/-1500 VDC). This isolation barrier prevents high-voltage electrical surges and field line noise from coupling into the low-voltage backplane logic of the Experion PKS system. Each individual channel includes dedicated coil surge absorber networks (120 ohm in series with 0.033 uF) to suppress inductive voltage transients generated during relay contact opening, protecting both field wiring integrity and internal logic circuits.

Frequently Asked Questions

Q: What is the primary operational difference between the CC-TDOR01 and CC-TDOR11 module models?

A: The CC-TDOR01 is configured for non-redundant relay output topologies, whereas the CC-TDOR11 is designed for redundant relay output configurations on dual-IOTA hardware bases.

Q: How are Form A (normally open) and Form B (normally closed) contact states selected on the module?

A: Each of the 32 discrete relay channels features physical jumper settings on the module board, allowing independent channel configuration for either Form A or Form B contact operation.

Q: Is external surge suppression required when switching inductive AC or DC loads?

A: The module features integrated RC surge absorber networks (120 ohm + 0.033 uF) per channel across the relay coil; however, external flyback diodes or RC snubbers directly across heavy inductive field loads are recommended to extend electrical contact life.

Field Installation Guidelines

1. Verify that field power is disconnected from the target I/O Termination Assembly (IOTA) position prior to inserting or removing the relay module.
2. Configure the physical channel jumpers on the CC-TDOR01 circuit board for Form A or Form B operation prior to mechanical seating.
3. Align the card edge and multi-pin connectors with the card guides on the Series C IOTA slot, then press firmly until fully seated.
4. Fasten all mechanical retention hardware to secure the module against industrial vibration.
5. Terminate field output wiring at the IOTA screw terminals using proper crimp ferrules, adhering to maximum resistive and inductive load limits (3 A maximum at 250 VAC).