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Honeywell identifies CC-TPIX11 as the redundant twelve-inch input/output termination assembly for the Series C CC-PPIX01 Pulse Input Module. The IOTA provides the matching termination and mounting arrangement; the CC-PPIX01 electronic module performs pulse processing. Verify the complete 51306544-175 marking, connector layout, installed module and approved wiring before replacement.
Section 5.7 of Honeywell's December 2021 Experion Series-C I/O specification lists CC-PPIX01 as the Pulse Input electronic module and CC-TPIX11 as its twelve-inch redundant IOTA. The IOTA is the termination and module-mounting assembly, not a second pulse processor. The combined module/IOTA table gives up to eight single or four dual pulse inputs, mixed configuration and two outputs. It also describes a per-channel isolated or bussed jumper option and an excitation power connection for internal 24 V or external 5–30 VDC supply. These arrangements must be checked against the actual installed wiring and the approved control design.
The associated CC-PPIX01 electronics can calculate rate and accumulated total and can support fast cutoff and MeterSuite custody-transfer applications, but those are not stand-alone functions of CC-TPIX11. Similarly, published 100 kHz single-channel and 10 kHz dual-pulse ranges describe the paired input arrangement under specified conditions. When replacing the IOTA, preserve the physical field termination, signal isolation, excitation source, redundant layout, connector orientation and firmware-compatible CC-PPIX01 module. The reviewed OEM PDF does not map the website's extra 51306544-175 number, so confirm a readable unit label or manufacturer parts record instead of treating the suffix as independently verified.
Honeywell explicitly lists CC-TPIX11 as the twelve-inch redundant IOTA for CC-PPIX01 Pulse Input Module. This is a termination and mounting assembly, not the active module that performs frequency measurement, accumulation or cutoff decisions. Confirm both model codes and installed revisions on the physical equipment. The cited OEM specification does not itself map the website's extra 51306544-175 identifier, so verify that association using the item label or manufacturer record.
The CC-PPIX01 and CC-TPIX11 combination supports as many as eight single or four dual pulse inputs, with mixed single and dual configuration, plus two outputs. The source also lists selectable isolated or bussed connection per channel and excitation provisions. These details guide termination checks, but channel processing belongs to the electronic module and its configuration. Verify every jumper, sensor supply and field cable against the approved drawings before connecting a replacement IOTA.
A physically similar Series C termination board is not automatically interchangeable. Match CC-TPIX11, the specified CC-PPIX01 electronic module, redundant configuration, twelve-inch footprint, connectors, jumper settings and signal assignments. Record the existing wiring and baseline pulse measurements before approved work. After installation, check each configured pulse channel and cutoff output under a controlled test plan; do not claim that the IOTA alone provides metering or custody-transfer calculation.
Compare the complete CC-TPIX11 marking and site's 51306544-175 number with the actual manufacturer record. Verify the associated CC-PPIX01 electronics, twelve-inch redundant IOTA footprint, field connector orientation, jumper positions, isolated or bussed selection, excitation source and sensor wiring. The OEM table describes the combined Pulse Input arrangement; do not claim this termination assembly independently calculates frequency, accumulated value or fast cutoff. Validate module and firmware compatibility for the configured meter or dosing application.
Record the existing IOTA serial and revision markings, field termination, excitation supply, redundant partner, channel allocation, baseline rates and cutoff settings before work. Follow site isolation and Honeywell handling instructions. After authorized replacement, verify each configured single or dual pulse path, sensor power, noise and polarity, redundancy diagnostics and outputs with a controlled acceptance procedure. Custody-transfer or fast-cutoff claims require complete application validation; the IOTA alone does not establish those functions or calibration performance.