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The 125720-02 is the Spare 4-Channel Relay Output Module designed for hazardous area systems and functional safety systems within the Bently Nevada 3500/32M system.
Flexible AND/OR Voting Logic
Functional Safety Compliant (SIL 2/3)
Hazardous Area Certified (ATEX/IECEx)
The 4-Channel Relay Module is a full-height module that provides four relay outputs. Any number of 4-Channel Relay Modules can be placed in any of the slots to the right of the Transient Data Interface (TDI) Module. Each output of the 4-Channel Relay Module can be independently programmed to perform voting logic.
Each relay utilized on the 4-Channel Relay Module includes Alarm Drive Logic. Programming for the Alarm Drive Logic uses AND and OR logic, and can use alarming inputs (Alert and Danger statuses), Not-OK, or individual PPLs from any monitor channel or any combination of monitor channels in the rack. You can program this Alarm Drive to meet your application needs using the Bently Nevada 3500 Rack Configuration Software.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil & Gas
Monitors vibration and axial displacement of large multistage centrifugal compressors on offshore platforms or onshore wells.
Petrochemical & Refining
Provides machinery protection for critical fluid catalytic cracking (FCC) axial blowers and high-pressure feed water pumps.
Thermal Power Generation
Tracks bearing vibration and casing expansion of supercritical steam turbine-generator sets, gas turbines, and draft fans.
Nuclear Power Generation
Controls safety interlocking for conventional island steam turbines and Reactor Coolant Pumps (RCP).
Hydroelectric Power Generation
Monitors runner vibration, shaft swing, and bearing deformation in large hydro-turbine generator units.
Metallurgy & Iron and Steel Industry
Safeguards core assets like blast furnace blowers, oxygen compressor units, and main drive bearings of hot/cold rolling mills.
The 125720-02 Spare Relay Output Module is used as a replacement output board for the 3500/32M 4-Channel Relay Module. When installed in a 3500 Machinery Protection System, it provides programmable relay outputs that work with monitor modules and the Transient Data Interface (TDI) to support alarm notification and protective shutdown logic.
Technical notes
Technical notes
The module features a full height hardware architecture design and is installed at the back of the 3500 rack in any slot to the right of the Transient Data Interface module. It uses a hard wired method to provide 4 channels of fully isolated physical relay contact outputs directly to external control circuits, serving as a core execution component for implementing emergency shutdown of large rotating machinery.
125720-02 is a Spare 4-Channel Relay Output Module.
What is the primary use of 125720-02?
Used to drive alarms, shut-off valves, or trigger machine interlock shutdown protection.
How many channels does 125720-02 have?
It contains 4 independent relay output channels.
How to install 125720-02 physically?
Insert it into the corresponding slot at the back of the 3500 rack and secure it.
Do you offer global delivery services?
Yes. We ship globally, and we are able to quickly deliver parts globally to any corner of the world. Unless otherwise specified, we will ship your order via (DHL). We can also ship through FedEx, UPS, and TNT. We can also use your account.
How many parts do you have in stock?
We have an extensive stock base consisting of ten thousands of new and discontinued automation parts including those from leading manufacturers such as:Control Systems (DCS, PLC, CNC) ,Panel Controllers,HMI and Display Panels,Drives,Encoders and Resolvers,Power Supplies. If you are unable to find what you are looking for then don’t panic.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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