
149992-01 I/O Module is a 16-channel relay output module applied to the Bently Nevada 3500 Machinery Protection System. It is used to convert the alarm status, danger status, equipment protection logic, and system status information generated by the internal monitoring module of the 3500 system into external relay output signals. This module communicates through the standard 3500 rack backplane and can be connected to DCS, PLC, alarm display equipment, and equipment shutdown interlock systems to achieve information exchange between the mechanical status monitoring system and the on-site control system.
We offer Bently Nevada 3500 series industrial spare parts supply support. The 149992-01 module is subject to model confirmation, product label inspection, and appearance testing before shipment. We can provide product photos according to customer requirements for procurement confirmation. At the same time, we support international logistics distribution via DHL, FedEx, UPS, etc., and provide a 12-month warranty service to meet the spare parts procurement needs of power plants, oil and gas, chemical industries, and industrial manufacturing enterprises for mechanical protection systems.
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Product Series | 3500 Machinery Protection System |
| Model | 3500/33 |
| Part Number | 149992-01 |
| Product Type | 16-Channel Relay Output Module |
| Module Function | Relay Output / Alarm Control |
| Relay Channels | 16 Channels |
| Relay Type | SPDT Relay Outputs |
| Logic Configuration | Programmable Alarm Drive Logic |
| Configuration Software | 3500 Rack Configuration Software |
| Installation | 3500 Rack Slot |
| Communication | Internal Rack Backplane |
| Application | Machinery Protection System |
| Compatible Equipment | Turbine, Compressor, Generator, Pump, Rotating Machinery |
| Condition | Original / New |
| Warranty | 12 Months |
| HS code | 8531901000 |
Choose the BENTLY NEVADA 149992-01 I/O Module
As an important output module of the 3500 series mechanical protection system, 149992-01 mainly undertakes the functions of alarm driving and protection control. The module provides 16 independent relay outputs, and each relay can be logically configured through the 3500 Rack Configuration Software. The alarm trigger conditions can be set according to the operational requirements of the on-site equipment. The system can execute corresponding outputs based on the Alert, Danger, and Not-OK states generated by the monitoring module as well as the status of the measured variables, achieving alarm indication, equipment protection, interlock control, and remote status feedback.
BENTLY NEVADA 149992-01 3500/33 Relay Module is widely used in steam turbines, gas turbines, compressors, generators, large pump sets, and other critical rotating machinery. For industrial sites that have already installed the 3500 system, this module is typically used for equipment maintenance, replacing faulty modules, and establishing long-term spare parts inventory. During the purchasing process, users usually pay attention to product model matching, system compatibility, delivery cycle, and product inspection status.
Each output of the 16-Channel Relay Module can be independently programmed to perform voting logic.
Each relay of the module includes Alarm Drive Logic. Programming for the Alarm Drive Logic uses AND and OR logic and may use the following:
- Alarming inputs (alert and danger statuses)
- Not-OK
- Individual Measured Variables from any monitor channel or any combination of monitor channels in the rack
Installation Guide

Standard 3500 Rack Installation
Correct installation of the BENTLY NEVADA 149992-01 I/O Module 3500/33 is a crucial step for ensuring the normal output of alarm and interlock signals from the 3500 mechanical protection system. The 149992-01 belongs to the I/O (Output) module of the 3500/33 relay module and is installed at the rear of the 3500 rack, in conjunction with the 16-channel relay control module at the front end. Before installation, it is necessary to confirm that the rack configuration, module model, and on-site wiring all comply with the system design requirements. The 3500 system adopts a separate structure of the main module and the I/O module, and they are connected through the rack backplate. Therefore, during the installation process, it is necessary to ensure that the corresponding slot positions are consistent.
After the hardware installation is completed, the system configuration should be checked using the 3500 Rack Configuration Software to confirm that 149992-01 has been correctly associated with the corresponding 3500/33 main module.
After restoring the power supply of the rack, one should observe the system's operating status and check:
Is the power supply for the 3500 rack normal?
Is the module status indicator showing a normal operating state?
Does the system have module identification failure, communication abnormalities, or hardware diagnostic alarms?
Has the backplane communication been established?
Is the module status displayed as online in the configuration software?
Maintenance Recommendation:
It is recommended to conduct periodic inspections of 149992-01 in conjunction with the annual maintenance plan, including:
Check the fixed state of the I/O module and the connection of the backplane;
Check if the wiring terminals are loose or have oxidation;
Test whether the output functions of each relay are normal;
View the diagnostic information and historical alarm records of the 3500 system;
Clean the dust inside the cabinet and maintain a good cooling environment.
For mechanical protection systems that operate continuously for a long time, it is recommended to prepare the corresponding 149992-01 backup I/O module. This will enable timely replacement in case of planned maintenance or sudden failures, thereby reducing the downtime for maintenance.
FAQ
149992-01 Can it be used independently?
149992-01 is an I/O module that is compatible with the 3500/33 relay module. It needs to be installed and used in conjunction with the corresponding 3500/33 front-end main module.
Installing 149992-01 alone cannot enable the relay output function, nor can it be independently recognized by the 3500 system.
149992-01: Can the damaged old I/O module be replaced?
If the original equipment also uses 149992-01 and the system configuration remains the same, it is usually possible to replace it directly.
Before replacement, it is recommended to conduct the following checks:
Are the part numbers consistent?
Is the module interface intact?
Are the front 3500/33 modules functioning properly?
Have the wiring terminals been restored according to the original diagram?
After the replacement is completed, it is recommended to conduct a relay function test and confirm the system configuration.
Could you provide product photos before shipment?
If the customer has any requirements, we can provide:
Overall product photo
Label photo
Part Number photo
Interface photo Packaging photo
Help the purchasing staff confirm the product model and appearance status, thereby reducing the communication costs during the procurement process.
What is the warranty period for this product?
We offer a 12-month warranty service.
During the warranty period, if there is any functional malfunction of the product due to its own reasons, please contact us promptly. We will assist in analyzing the problem and provide corresponding after-sales support based on the actual situation.
Packaging & Shipping
To reduce the risk of product damage during international transportation due to handling, vibration and environmental factors, the BENTLY NEVADA 149992-01 I/O Module 3500/33 is packaged with standard industrial spare parts before shipment, and corresponding anti-static, shock-proof and moisture-proof protection is provided according to the product characteristics. All packaging is handled in accordance with international logistics transportation requirements and is suitable for air transportation, international express delivery and long-term storage transportation.
Each product is packaged according to the standard process, which includes:
Anti-static Packaging Bag
High-density shock-absorbing foam protection
Independent cardboard box packaging
Moisture-proof protection treatment
Product labels and model identification
Based on the customer's country, transportation time frame and project requirements, we support various international logistics methods, including: DHL Express
FedEx
UPS
TNT
For emergency spare parts projects, international express delivery can be given priority; for bulk purchases or engineering projects, we can also assist in arranging cost-effective transportation solutions based on actual needs.
In order to assist the client in completing the import customs clearance and project delivery, we can provide the relevant export documents as per the order requirements, including: Commercial Invoice
Packing List
Shipping Documents
If the project has specific requirements regarding product labels, packaging markings or document contents, we can also cooperate to handle them in accordance with the purchase contract and customer requests.
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