YOKOGAWA SR1B-045N-1KC Ruggedized DCS Power Supply Module

Product Overview

YOKOGAWA SR1B-045N-1KC Ruggedized DCS Power Supply Module: Industrial Resilience for Harsh Environments

The YOKOGAWA SR1B-045N-1KC is a high-reliability DC power supply module engineered for the STARDOM FCN-RTU distributed control system platform. Designed to sustain continuous, uninterrupted power delivery in the most demanding industrial environments — including high-temperature process plants, high-humidity coastal facilities, dust-laden mining operations, and vibration-intensive heavy manufacturing lines — this module represents YOKOGAWA’s commitment to field-proven ruggedness and operational safety.

In critical infrastructure applications where power interruption is not an option, the SR1B-045N-1KC provides stable, regulated DC output to the FCN-RTU controller chassis, ensuring that all downstream I/O modules, communication modules, and safety logic processors remain energized and fully operational. Its compact DIN-rail-compatible form factor integrates seamlessly into standard industrial control cabinets, reducing installation complexity while maximizing panel space efficiency.

Built to withstand electromagnetic interference (EMI) common in variable frequency drive (VFD) environments and high-voltage switchgear rooms, the SR1B-045N-1KC incorporates robust filtering and isolation circuitry. This makes it an ideal power backbone for FCN-RTU nodes deployed alongside YOKOGAWA CENTUM VP DCS controllers, Vnet/IP communication networks, and safety instrumented system (SIS) architectures where signal integrity and power quality are paramount.

Rugged Specifications Table

Comprehensive Protection Solutions

The SR1B-045N-1KC does not operate in isolation — it is the power foundation upon which an entire FCN-RTU control node depends. In a typical STARDOM-based remote automation architecture, this power supply module energizes the FCN-RTU main processor unit (MPU), which in turn coordinates data acquisition from analog input modules such as the YOKOGAWA ANB10D and digital I/O modules like the YOKOGAWA DNB10D. These I/O modules interface directly with field instruments — pressure transmitters, flow meters, temperature sensors — and relay real-time process data back to the CENTUM VP DCS host system via Vnet/IP or Modbus TCP communication links.

In high-vibration environments such as compressor stations or offshore platforms, the SR1B-045N-1KC’s robust chassis mounting ensures that power delivery to the YOKOGAWA FCN-RTU communication module remains uninterrupted, preserving the integrity of HART, FOUNDATION Fieldbus, or PROFIBUS DP field device communications. When paired with a redundant power supply configuration — using a second SR1B-045N-1KC in hot-standby mode — the system achieves the power redundancy required by IEC 61511 functional safety standards for SIL-rated control loops.

For control cabinet builders integrating YOKOGAWA STARDOM nodes alongside third-party safety PLCs, the SR1B-045N-1KC’s clean, regulated 24 VDC output also powers auxiliary components including Phoenix Contact QUINT-series power conditioners, Weidmüller terminal block relay modules, and Murrelektronik surge protection devices — all of which are commonly co-installed in the same marshalling cabinet. Its wide-range AC/DC input further simplifies integration in international projects where grid voltage standards vary between 110 VAC and 230 VAC.

Application in Critical Infrastructure

In oil and gas upstream operations, the SR1B-045N-1KC is deployed in wellhead automation panels and pipeline SCADA RTU enclosures where ambient temperatures can exceed 50°C and power quality from local generators is inconsistent. Its wide-input tolerance and internal surge suppression absorb voltage transients that would otherwise damage sensitive processor boards, ensuring that emergency shutdown (ESD) logic and production monitoring remain continuously active.

In coal and metal mining environments, where fine particulate contamination and mechanical shock are constant threats, the SR1B-045N-1KC’s sealed power conversion stage and conformal-coated PCB assembly resist corrosion and conductive dust ingress. Mining automation systems relying on YOKOGAWA STARDOM FCN-RTU nodes for conveyor control, ventilation management, and hoisting system interlocks depend on this module’s uninterrupted output to maintain safe production cycles.

In power generation and grid substations, the module supports YOKOGAWA FCN-RTU nodes used for bay-level protection coordination and energy metering data aggregation. Its compliance with IEC 61000-4 immunity standards — covering electrostatic discharge, electrical fast transients, and conducted RF disturbances — makes it suitable for installation in high-voltage switchgear rooms where electromagnetic stress levels are severe.

In water and wastewater treatment plants, the SR1B-045N-1KC powers FCN-RTU controllers managing pump station automation, chemical dosing control, and SCADA telemetry. Its long MTBF rating and field-replaceable design mean that maintenance teams can swap a failed unit in minutes without specialized tools, minimizing process downtime and avoiding costly manual overrides.

Security & Quality FAQ

Q1: What warranty coverage does TOPNLMS provide for the SR1B-045N-1KC?
All SR1B-045N-1KC units shipped by TOPNLMS are covered by a 12-month warranty from the date of delivery. If the module fails under normal operating conditions within this period, we provide free replacement or full refund. Our warranty covers manufacturing defects and functional failures — not physical damage caused by incorrect installation or overvoltage events beyond rated specifications.

Q2: How is each unit tested before shipment?
Every SR1B-045N-1KC undergoes a pre-shipment functional test at our Xiamen facility. Testing includes output voltage verification under load, input voltage range validation, and thermal stability check. Units that fail any test parameter are quarantined and not shipped. A test report is available upon request for customers with incoming inspection requirements.

Q3: Is this module compatible with all YOKOGAWA STARDOM FCN-RTU chassis variants?
The SR1B-045N-1KC is designed for the YOKOGAWA STARDOM FCN-RTU platform and is compatible with FCN-100 and FCJ controller chassis configurations. For integration with older STARDOM FCN nodes or non-standard chassis configurations, we recommend confirming the chassis power slot specification against the YOKOGAWA hardware manual (IM 32Q01C10-31E) before ordering. Our technical team can assist with compatibility verification at no charge.

Q4: Can TOPNLMS support long-term supply for ongoing maintenance and spare parts programs?
Yes. TOPNLMS maintains a dedicated inventory of YOKOGAWA STARDOM FCN-RTU components, including power supply modules, I/O modules, and communication cards, to support customers with multi-year spare parts agreements. We can provide scheduled delivery, reserved stock allocation, and advance replacement programs for critical infrastructure operators who cannot tolerate extended lead times from standard distribution channels. Contact us to discuss a tailored supply arrangement.