The 3500/33 149986-01 16-Channel Relay Module is a relay output module in the Bently Nevada 3500 mechanical protection system. It is mainly used to convert the alarm, danger, shutdown, and system status signals generated by the monitoring module into relay contact outputs, enabling signal interaction with on-site control equipment, interlock systems, alarm devices, and DCS, PLC, and other control systems. The module provides 16 independent relay outputs and can perform functions such as alarm interlock, equipment shutdown, status indication, and remote control according to system configuration. It is widely used in steam turbines, gas turbines, compressors, generators, fans, and large rotating machinery protection systems.
For equipment maintenance and spare parts procurement, module compatibility, delivery cycle, and product status directly affect the on-site maintenance plan. The BENTLY NEVADA 3500/33 149986-01 product we provide supports the supply of original products. Before shipment, it undergoes checks on model, label, appearance, CE, and basic functions, and can provide product physical photos and shipping materials according to customer requirements. It supports international logistics transportation via DHL, FedEx, UPS, etc., offers a 12-month warranty service, and can meet different procurement needs such as planned maintenance, emergency replacement, and long-term spare parts inventory.
Technical Specifications
| Manufacturer | Bently Nevada |
| Product Name | 16-Channel Relay Module |
| Series | 3500 Machinery Protection System |
| Model Number | 3500/33 |
| Part Number | 149986-01 |
| Module Type | Relay Output Module |
| Relay Channels | 16 Independent Relay Outputs |
| Relay Type | Dry Contact Relay Outputs |
| Output Configuration | User-configurable via 3500 Rack Configuration Software |
| Communication | Internal 3500 Rack Backplane Communication |
| Installation | Standard 3500 Rack Slot Installation |
| Compatible Rack | Bently Nevada 3500 Rack System |
| Supported Functions | Alarm Output, Danger Alarm, Trip Logic, OK Status, Bypass Status, System Status Indication |
| Application | Machinery Protection and Condition Monitoring Systems |
| Typical Equipment | Steam Turbines, Gas Turbines, Compressors, Pumps, Generators, Industrial Rotating Machinery |
| Operating Environment | Industrial Control and Machinery Protection Applications |
| Product Condition | Brand New / Original |
| Country of Origin | USA* |
| HS code | 8531901000 |
| Warranty | 12 Months |
| Shipping Methods | DHL, FedEx, UPS, TNT |
| Packing | Anti-static Bag + Protective Foam + Carton Box |
Inputs
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Power Consumption
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5.8 watts typical
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Outputs
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Front Panel LEDs
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OK LED
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Illuminated when the 16-Channel Relay Module is operating properly.
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TX/RX LED
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Transmit and receive flashes when the 16-Channel Relay Module is
communicating with other modules in the 3500 rack.
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CH ALARM LED
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Illuminated when the relay channel is in an alarm state.
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Relay Type
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Single-pole Double-throw (SPDT)
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Relay Environmental Sealing
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Epoxy-sealed
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Relay Arc Suppressor
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250 Vrms installed as standard
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Relay Contact Life
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10,000 cycles
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Relay Operation
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Four groups of four channels are switch selectable for Normally De-
Energized (ND) or Normally Energized (NE) operation.
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Physicial
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Main Module
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Dimensions
(height x width x depth)
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241 mm x 24.4 mm x 242 mm
(9.50 in x 0.96 in x 9.52 in)
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Weight
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0.7 kg (1.6 lb)
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I/O Module
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Dimensions
(height x width x depth)
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241 mm x 24.4 mm x 99.1 mm
(9.50 in x 0.96 in x 3.90 in)
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Weight
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0.4 kg (1.0 lb)
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Main Module
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1 full-height front slot
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I/O Modules
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1 full-height rear slot
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Key Features
Output of 16 independent relays
The module is equipped with 16 independent relay outputs. Each output can execute the corresponding control logic according to the configuration of the 3500 system, achieving alarm output, machine stop interlock, status feedback, and control of external devices.
Support multiple alarm status outputs
3500/33 can respond to various states in the 3500 monitoring system, including Alert, Danger, Trip, OK, Bypass, and System Status, etc. When the monitoring module detects that vibration, displacement, speed, or temperature exceeds the set value, it can drive the on-site alarm device, shutdown circuit, or control system through relays to achieve automatic interlock control.
Communicate with the backplane of the 3500 system
The module exchanges data with the system's internal components through the 3500 Rack Backplane and can obtain the alarm information generated by the monitoring module without the need for additional communication interfaces. The backplane communication structure reduces the amount of on-site wiring and simultaneously enhances the system integration efficiency, making it suitable for centralized installation and maintenance of large-scale mechanical protection systems.
Support mechanical protection interlock control
In key equipment such as steam turbines, compressors, fans, and generators, the relay output is usually an important component of the equipment protection circuit. When the monitoring module detects abnormal vibration or shaft displacement, it can output a shutdown signal or alarm signal through 3500/33, assisting the on-site control system in performing the preset protection actions.
Suitable for long-term spare parts management
The 3500 series products are widely used in the power, petroleum, natural gas, chemical, and metallurgical industries. Many sites still operate continuously for a long time. For the equipment maintenance department, having a reserve of 3500/33 relay modules in advance helps shorten the equipment maintenance time and meet the requirements for annual maintenance and emergency failure replacement. We support long-term supply, bulk purchasing, and global delivery, and can provide corresponding product information and delivery support based on the customer's project needs.
Compatible With Bently Nevada 3500 Machinery Protection System
The BENTLY NEVADA 3500/33 149986-01 16-Channel Relay Module is installed in the standard 3500 rack slot and communicates with the system through the internal backplane of the 3500. No additional communication interface is required to receive status information from the monitoring module. For existing 3500 systems, 3500/33 149986-01 can be used as a replacement spare part for the original relay module for equipment maintenance, fault replacement, and long-term spare parts reserve.
Compatible system:
Bently Nevada 3500 Machinery Protection System (Mechanical Protection System)
Bently Nevada 3500 Standard Frame System Bently Nevada 3500/05 Rack Assembly
Bently Nevada 3500 Monitoring Platform
Compatible monitoring module:
The 3500/33 relay module can be used in conjunction with various monitoring modules of the 3500 series. It will execute the relay output based on the alarm conditions generated by the monitoring module, including:
Bently Nevada 3500/40M Proximitor Monitor
Bently Nevada 3500/42M Proximitor/Seismic Monitor
Bently Nevada 3500/44M Aeroderivative GT Vibration Monitor
Bently Nevada 3500/45 Position Monitor
Bently Nevada 3500/46 Hydro Monitor
Bently Nevada 3500/50 Tachometer Module
Bently Nevada 3500/60 Temperature Monitor
Bently Nevada 3500/61 Process Variable Monitor
Bently Nevada 3500/62 Process Variable I/O Module
Bently Nevada 3500/64 Dynamic Pressure Monitor
Bently Nevada 3500/65 Monitor
Bently Nevada 3500/92 Communication Gateway
By combining with the aforementioned monitoring module, 3500/33 can convert the monitoring results of mechanical vibration, shaft displacement, speed, temperature, and other process variables into external relay outputs, which are used for alarm indication, equipment protection, interlock control, and signal transmission of the control system.
Why Procurement Teams Choose This Module
For the long-term operation of rotating machinery protection systems, the relay output module plays a crucial role in alarm interlock and equipment protection. During the procurement process, users not only pay attention to whether the product models are consistent, but also focus on whether the module can be directly installed into the existing 3500 system, whether it supports the original system configuration, and whether the delivery cycle meets the maintenance shutdown plan.
3500/33 149986-01 adopts the standard 3500 rack interface design, which can be installed in a consistent manner with the existing 3500 system without the need to modify the cabinet structure or the on-site wiring. For equipment upgrades, fault replacements, or long-term spare parts reserves, it can reduce the on-site installation preparation work.
Before all products are shipped, their models are checked, labels are inspected, and their appearance is examined. We also provide product photos according to customer needs, facilitating the confirmation of product information by purchasing personnel. For international projects, we offer export packaging, global logistics distribution, and commercial document support services, providing more comprehensive delivery support for overseas project purchases.
FAQ
Q: Can the BENTLY NEVADA 3500/33 149986-01 be directly replaced with the old module?
A: Whether it can be directly replaced depends on confirming the model, Part Number, system configuration, and 3500 rack settings of the original equipment.
If the original system uses the same model:
3500/33 149986-01
Usually, the modules can be replaced directly without modifying the cabinet structure.
Q: Is the product BENTLY NEVADA 3500/33 149986-01 in stock? How long is the delivery cycle?
A: We have been supplying industrial spare parts for the Bently Nevada 3500 series for a long time. The specific inventory status needs to be confirmed based on the purchase quantity and the current inventory.
Q: Is the item provided the original BENTLY NEVADA 3500/33 model (149986-01)?
A: We supply industrial automation original equipment components and confirm the product information before shipment.
Pre-shipment inspection includes:
Product model confirmation
Part Number verification
Product label inspection: Visual inspection
Interface inspection
Q: Does BENTLY NEVADA 3500/33 149986-01 require any additional software configuration?
A: The settings need to be made according to the configuration of the on-site system.
The relay logic of 3500/33 is usually defined through the Bently Nevada 3500 configuration software, including:
Input alarm conditions
Output relay logic
Alarm level
Status output method