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Honeywell CC-TDOD51 I/O Termination Assembly

Configured for field termination of 24 VDC digital output signals in Honeywell Series C I/O system, the Honeywell CC-TDOD51 (CC-PDOD51 I/O Termination Assembly) provides direct physical/electrical execution for routing 32-channel open-drain output interfaces between Series C I/O modules and field wiring terminals.

Suffix Breakdown & Model Matrix

No official public suffix decomposition or functional variant matrix is defined for CC-TDOD51 / CC-PDOD51. The model is treated as a fixed-order termination assembly tied to Series C digital output architecture.

Hardware Specifications

Parameter	Specification
Model	CC-TDOD51 / CC-PDOD51
Brand	Honeywell
Origin	USA
Power Consumption	Field-powered via I/O module backplane / external field supply (system dependent)
Output Channels	32
Output Type	SINK (Open Drain)
Load Voltage	30 VDC max
Load Current	0.1 A per channel max
Isolation	1000 VAC RMS system-to-field galvanic isolation
Turn-On/Off Time	10 ms max
Leakage Current	100 µA max (off-state)

Honeywell Series C Field I/O Termination Characteristics

The CC-TDOD51 assembly interfaces with Honeywell Series C digital output modules through a fixed I/O termination structure supporting channel-level field wiring distribution. The design implements system-to-field galvanic isolation rated at 1000 VAC RMS, separating backplane logic from external 24 VDC field circuits.

Channel architecture is configured for open-drain sink operation, requiring external field power distribution. Off-state behavior maintains nominal 24 VDC potential with leakage current limitation defined at microampere level. Output switching is non-redundant with direct channel mapping to module logic states without intermediate buffering.

Signal routing is optimized for high-density termination of discrete control signals such as solenoid actuation, relay driving, and discrete load switching within Series C I/O racks.

Frequently Asked Questions (FAQ)

Q: Does CC-TDOD51 support hot-swap during active channel operation?
A: Hot-swap behavior is dependent on the Series C chassis and controller configuration. Field termination removal may cause transient loss of all 32 channels due to shared termination bus architecture.

Q: What is the backplane impact on load switching?
A: The termination assembly itself does not process load current. Switching current is handled entirely at the field side; backplane signals remain low-level logic without load participation.

Q: Can CC-TDOD51 be used in redundant I/O configurations?
A: This model is defined as non-redundant termination hardware. Redundancy, if implemented, is handled at module or controller level, not at termination assembly level.

Field Installation Guidelines

Field wiring shall be routed to terminal points with maintained separation between field power and signal conductors. Shield termination should follow single-point grounding practice at cabinet earth reference to minimize ground loop formation.

Ensure all 24 VDC field supplies are externally fused according to per-channel current limits. Channel wiring should avoid parallel routing with high-noise AC conductors or inverter output lines.

Termination seating into the Series C backplane interface must be fully engaged to maintain isolation barrier integrity and channel continuity.

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