Honeywell TC-PRR021 – Redundant Power Regulator Module for Experion/Series C Chassis

The Honeywell TC-PRR021 is the redundant power regulator you put in a Series C/Experion chassis when uptime really matters. It takes a 24 VDC bulk feed and delivers tightly regulated backplane power for C300 controllers and Series C I/O. One thing I appreciate is how it pairs with a second TC-PRR021 for 1+1 redundancy—if one module is removed or fails, the other seamlessly carries the load. In many cases this single change is what turns a good cabinet into a plant-ready, 24/7 node.

Our Order Process and Guarantees

• Warranty: 365 days
• Lead time: typically 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full balance before delivery
• Shipping: fedex, UPS, DHL

Key Features

• 1+1 Redundancy – Designed to operate as a redundant pair; automatic load sharing and switchover keep the chassis powered if one module is removed or faults.
• 24 VDC Input – Accepts a standard 24 VDC industrial supply and regulates the required backplane voltages for Series C/Experion nodes.
• Backplane Distribution – Feeds regulated power to the chassis for C300 controllers and Series C I/O; no field I/O wiring to the module itself.
• Hot‑swappable – In most cases you can replace a single module without shutting down the node when the partner module is healthy.
• Front LEDs – Clear status indication for power good, fault, and redundancy state; makes quick checks during maintenance a lot easier.
• Cabinet Friendly – Compact, chassis-mounted design that typically fits existing Experion/Series C layouts with standard 24 VDC distribution.

Technical Specifications

Note: actual load capacity depends on the specific chassis population (controller + I/O mix). From my experience, sizing the 24 VDC bulk supply with 20–30% headroom works best.

Related or Supporting Products

• Honeywell TC-PRS021 – Single (non‑redundant) power regulator for similar Series C/Experion chassis; lower cost where redundancy isn’t required.
• 24 VDC Bulk Power Supplies – Industrial 24 VDC sources sized to your node load; typically DIN‑rail units with ≥20% margin for redundancy.
• Series C I/O Modules – Works with Series C cards (e.g., analog input/output and digital I/O) and C300 controllers powered via the same backplane.

A maintenance lead at a food & bev plant told us they swapped a single regulator for a TC-PRR021 pair during a planned stop—since then, nuisance shutdowns from power dips basically disappeared. You might notice the same improvement if your cabinets ride through brownouts or generator transfers.

Installation & Maintenance

• Cabinet environment – Keep ambient 0–60 °C with adequate ventilation. Avoid mounting near heat sources; leave space for airflow around the module face.
• Wiring – Feed each regulator with separately fused 24 VDC feeds and a solid protective earth. Use properly sized conductors; tighten terminations to spec.
• Redundancy practice – For 1+1, power each TC-PRR021 from independent 24 V supplies or independent feeders of the same supply to reduce common‑mode risk.
• Hot‑swap – Typically allowed when the partner module is healthy; verify LED status before removal. Always follow site LOTO procedures.
• Routine care – Quarterly dust removal with dry air and a visual check of LEDs and terminals. No user calibration required. Firmware updates are not applicable for this regulator in most cases.
• Commissioning tip – Measure backplane voltages under full load and log them; it makes future troubleshooting faster.

Quality & Certifications

• CE and UL/cUL compliance for industrial control equipment (typical for Honeywell Series C hardware)
• RoHS compliant
• Manufacturer-grade build for 24/7 process environments

Warranty is 365 days from delivery. If you need a quick replacement strategy, we can ship from stock in about a week, and we’ll align shipment via fedex, UPS, or DHL based on your lane and urgency.