Description

Output voltage:24 VDC

Output current:5 A

Input voltage:100–240 VAC,50/60 Hz

Applicable systems:EPRO PR 9266 Series Monitoring System

Redundancy support:Supports dual power supply parallel redundancy(N+1)

Mounting method:Slide-in PR 9266 rack,hot-swappable

Status indicator:Green OK light+red FAULT light

Technical specifications

Product model:RSM020

Manufacturer:EPRO GmbH(now part of Siemens)

Product type:Frame Power Supply

Applicable systems:EPRO PR 9266 Series Monitoring System

Input voltage:100–240 VAC,50/60 Hz(auto-switching)

Input current:Maximum 2.5 A 120 VAC

Output voltage:+24 VDC(nominal)

Output current:5 A(maximum)

Output power:120 W

Efficiency:>80%

Voltage Regulation:±1%

Ripple and Noise:<1%(peak-to-peak)

Overload Protection:Auto-recovery,current limiting

Overvoltage Protection:Built-in OVP,output cutoff

Cooling:Natural convection(fanless)

Status Indicators:

Green LED:POWER OK

Red LED:FAULT

Mounting:Slide-in installation in a standard PR 9266 rack slot

Hot-Swap:Supported

Redundancy:Supports parallel operation of two power supplies for N+1 redundancy

Operating Temperature:0°C to+60°C

Storage Temperature:-40°C to+85°C

Humidity Range:5%to 95%RH(non-condensing)

Ingress Protection:IP20

Certifications:CE,UL,CSA,RoHS

Product Overview

When it comes to the EPRO RSM020,it’s the lifeblood of the PR 9266 monitoring system.This isn’t a sensor or a data acquisition card,but it does provide power—the vibration module,speed module,key phase module,and communication module in your entire rack all rely on it.

This 24VDC power supply module,designed specifically for the EPRO PR 9266 series,is installed on the far left side of the rack or in a designated power supply slot.It converts 100-240VAC mains power to clean,stable 24VDC,powering the entire rack backplane.With a maximum output of 5A,it’s more than enough to power a medium-sized PR 9266 rack.

Crucially,it supports redundancy!You can install two RSM020s in parallel.If one fails,the other immediately takes over,ensuring system downtime and no alarms,achieving true high availability.This is a life-saving feature in continuous production units like thermal power plants and petrochemical plants.

Each power supply has a green POWER OK indicator and a red FAULT indicator,providing a clear status indicator.They are hot-swappable,so if a problem arises,simply remove it and replace it with a new one without shutting down the system.The EPRO RSM020 is one of those core components that’s invisible during normal use,yet paralyzed when it breaks.

Main Features and Advantages

This power supply may look simple,but its impressive performance lies within.What are the EPRO RSM020’s greatest strengths?First,high reliability.Designed specifically for critical industrial equipment,it features fanless,natural heat dissipation,a long lifespan,and a low failure rate.

Second,redundancy.Dual power supplies connected in parallel provide true fault-tolerant power supply,ensuring the monitoring system never loses connection.Third,wide input voltage range.Automatically adapting to 100-240VAC,it’s universally compatible,eliminating the need for manual switching.

Fourth,stable output.5A/120W meets the power requirements of the PR 9266 rack.Fifth,visible status.A dual-color LED clearly indicates operating and fault status,facilitating quick diagnosis.

Sixth,hot-swappable.A faulty power supply can be replaced while the system is running,significantly reducing the risk of downtime.Seventh,clean output.Low ripple and noise prevent interference with sensitive vibration monitoring signals.

To put it bluntly,the EPRO RSM020 is not an ordinary switching power supply.Instead,it’s an industrial-grade,frame-based power supply designed for monitoring critical rotating equipment and the”power heart”of the PR 9266 system.

The EPRO RSM020 is a high-reliability frame power supply module designed for the EPRO PR 9266 Machinery Protection System.It converts 100–240 VAC input to a stable+24 VDC output(5 A max,120 W),powering the entire PR 9266 rack including vibration,speed,and communication modules.Key features include dual power supply redundancy support,hot-swappable design,and LED status indicators(POWER OK green,FAULT red).With fanless operation,high efficiency(>80%),and low output ripple,it ensures clean and uninterrupted power for critical machinery monitoring in power plants,refineries,and industrial facilities.The RSM020 is essential for maintaining the continuous operation and integrity of the PR 9266 system.

Application areas

Where is this thing most popular?Thermal power plants,gas turbine power plants,petrochemical plants,refineries,chemical plants,large compressor stations,turbine rooms—you’ll find the EPRO PR 9266 system wherever it’s used to monitor critical rotating equipment,including steam turbines,gas turbines,compressors,pumps,and fans.

For example,in thermal power plants,it powers the PR 9266 racks that monitor turbine vibration,shaft displacement,and speed,ensuring safe operation.In petrochemical plants,it supports the shaft protection system for large compressors.A power failure renders the entire protection system ineffective,posing a significant risk.

Why?Because of reliability and redundancy.With dual power supply hot standby support,a fanless design,and industrial-grade quality,the EPRO RSM020 is the industry’s”power guardian.”It works silently,but without it,the entire monitoring system would be depleted.

Selection Guide/Purchasing Recommendations

If you’re replacing this power supply,there are a few things you need to know.First,the system model.Confirm that your system is an EPRO PR 9266 series.Other EPRO systems(such as the MMS 6000)use different power supply modules.

Second,is redundancy required?It’s strongly recommended to configure dual power supplies(two RSM020s)to achieve N+1 redundancy and improve system reliability.Third,consider the input voltage.The RSM020 supports 100-240VAC and is universally compatible,so there’s no need to worry.

Finally,a word of caution:Don’t buy cheap”compatible power supplies”or”copycat modules.”They have high output ripple,lack redundancy,and have a short lifespan.A failure could cause the entire PR 9266 system to shut down,posing a serious safety hazard.

Frequently Asked Questions(FAQs)

Q:Can the RSM020 be used in the MMS 6000 system?

A:No.The EPRO RSM020 is designed specifically for the PR 9266 system.The MMS 6000 system uses a different power supply module(such as the RSM010 or RSM011).

Q:What should I do if the red FAULT light is on?

A:A red light indicates a power supply failure.Try restarting first.If the green light still doesn’t come on,the module is damaged and needs to be replaced.In a redundant configuration,you can directly hot-swap and replace the faulty module.

Q:Hot-swappable is supported.Does that mean I can remove it at will?

A:Yes.In a redundant configuration,you can remove the faulty power supply at any time to replace it.However,in a single power supply configuration,unplugging the power supply will cause the entire rack to lose power.Always do this when the system is shut down.

Q:The output is 24V,but I only measure 22V.Is this normal?

A:No.Normally,it should be between 23.5V and 24.5V.Low voltage may indicate module aging or overload.Replacement is recommended.

Q:Can I still buy a new,genuine module?

A:Yes.Although the EPRO RSM020 is an older model,Siemens still provides spare parts support for the PR 9266 system.Professional spare parts vendors like Shenzhen Changxin offer both genuine and refurbished parts.They are rigorously tested and reliable,making them a safe choice.

Related Products

RSM010:Possibly an MMS 6000 series power supply module.

PR 9266 Rack:EPRO PR 9266 system rack.

PR 9266/10:PR 9266 rack interface module.

PR 9266/20:PR 9266 vibration monitoring module.

PR 9266/30:PR 9266 speed/key phase module.

PR 9266/40:PR 9266 communication module.

24VDC Backup Battery:Provides short-term power outage protection.

Power Quality Analyzer:Monitors input power quality.

EPRO PR 9266 System Manual:Official technical documentation.

Siemens EPRO Support Portal:Obtain the latest firmware and documentation.

Pre-installation Preparation:

Confirm that the system is in maintenance mode or powered off(single power supply configuration).Have an anti-static wrist strap ready.Check the rack power supply slots.If you have a redundant configuration,ensure the other power supply is functioning properly.

Maintenance Recommendations:

It’s recommended to check the power supply output voltage and ripple every two years.Maintain ventilation in the cabinet to avoid high temperatures.In a redundant configuration,regularly rotate the primary and backup power supplies to balance their lifespans.

Product Guarantee

Every EPRO RSM020 sold by Shenzhen Changxin is genuine,traceable,and comes with a factory inspection report.We promise a tenfold penalty for counterfeit products and a one-year warranty.Whether you need a replacement part or a system upgrade urgently,we can source from anywhere and respond quickly.Technical support is available 24/7.Can’t get through by phone?Contact us on WeChat.We don’t just sell products;we provide solutions.From selection to installation to commissioning,we’re here to support you throughout the entire process.When you choose us,you’re not just buying a power supply;you’re buying peace of mind.Customers who have worked with us all say:”Leave this matter to Changxin and it will be settled!”

At Shenzhen Changxin,every EPRO RSM020 power supply we supply is guaranteed authentic,fully tested,and backed by a 12-month warranty.We specialize in sourcing critical machinery protection spares,ensuring fast delivery for legacy or hard-to-find parts.Our technical team offers 24/7 support in English and Chinese,providing seamless assistance from selection to commissioning.With strict quality control,transparent traceability,and a customer-first philosophy,we are trusted by power plants,refineries,and maintenance teams worldwide.Partner with us for reliable,long-term asset protection support.Visit us at[www.cnplcdcs.com]to learn more.

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