Overview
Manuals
Sink Output Loads
Field Power Selection
Output Failure Modes
Features:
- Nonredundant, nominal 9-inch termination assembly listed with the CC-PDOD51 Series C output IOM.
- The matched output assembly provides 32 sink/open-drain channels with a maximum load of 100 mA per channel and a shared return.
- IOTA wiring selects internal or external field power; output modes, electronic overcurrent protection and FAILOPT behavior belong to the associated IOM.
CC-TDOD51 is the nonredundant IOTA specified for Honeywell's CC-PDOD51 sink-type digital output hardware. Its job is to provide the termination and connection arrangement between the electronic module and the field circuits. The complete assembly supports 32 outputs, with a maximum channel load of 0.1 A, and is intended for compatible low-current equipment interfaces, solenoid valves and interposing relays. All outputs share a return and a selected field-power source, which must be considered when assigning circuits and reviewing the installation.
The field supply may come from the Series C system or an externally connected 24 V source, as determined by the IOTA wiring arrangement. Honeywell's 1000 VAC RMS system-to-field isolation rating is qualified by the use of user-supplied field power; it must not be presented as independent isolation between every output. The associated IOM provides configurable latched, pulsed or pulse-width-modulated operation and a channel failure response. Before replacement, record the power-selection wiring and output configuration, confirm the actual load currents, and test the affected equipment commands under the approved site procedure.
The CC-TDOD51 Honeywell Nonredundant 24 VDC Sink-Output IOTA may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell CC-TDOD51 documentation and reference links.
Important Notice: This two-page excerpt retains the original Honeywell cover and page 38, which names CC-TDOD51 and gives the matched CC-PDOD51 output specification. Use the complete applicable installation manual for terminal assignments and servicing. The zero-gap switchover entry applies only to redundant configurations.
The matched assembly uses sink/open-drain outputs rather than sourcing outputs or isolated relay contacts. Each channel is limited to 0.1 A, with a published maximum load voltage of 30 VDC. Check the receiving interface and load current, including its operating characteristics, before connection. The nominal 24 VDC description does not mean that an arbitrary 24 V solenoid or contactor can be driven directly.
All outputs use a common return and the same selected source. The IOTA wiring option determines whether the circuits are referenced to the internal Series C supply or to an external field supply. Honeywell specifies 1000 VAC RMS system-to-field isolation when user-supplied field power is used. Preserve the approved supply and return arrangement; do not describe the channels as mutually isolated.
The associated Series C IOM supports a per-channel FAILOPT selection: retain the last commanded value or shed to a user-configured safe value. Latched, pulsed and pulse-width-modulated modes are also channel settings. These functions require the matched electronic module and control configuration; they are not processing features inside the bare IOTA and do not by themselves establish a safety-rated function.
