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Relay Output Module Bently Nevada 3500/33 149992-01

Relay Output Module Bently Nevada 3500/33 149992-01

Product Description

The 3500/33 (149992-01) is a high-density relay output module designed for the 3500 Machinery Protection System developed by Bently Nevada. This module provides 16 independent relay output channels within a single rack...

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SKU: 3500/33 149992-01
Vendor: Bently Nevada
Category: Relay Output Module
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Product Description

The 3500/33 (149992-01) is a high-density relay output module designed for the 3500 Machinery Protection System developed by Bently Nevada. This module provides 16 independent relay output channels within a single rack slot, enabling efficient expansion of safety and alarm control capabilities for critical rotating machinery protection.

The 3500/33 (149992-01) functions as a primary interface for triggering external safety systems, including annunciators, PLC digital inputs, and emergency shutdown circuits. Each relay channel can be independently configured using 3500 Rack Configuration Software to respond to machine protection logic derived from vibration, temperature, or process condition monitoring.

The module supports advanced alarm voting logic, allowing complex "AND / OR" interlock configurations to prevent false trips while maintaining reliable safety shutdown capability. This makes it suitable for high-value industrial assets where uptime and safety integrity are both critical.

Detailed Technical Specifications

Item Specification
Model / Part Number 3500/33 (149992-01)
Module Type 16-Channel Relay Output
Output Channels 16 Independent Relays
Relay Type SPDT (Single Pole Double Throw)
Logic Programming AND / OR voting and grouped alarm logic
Operating Temperature -40°C to +85°C
Weight 1.50 kg
Dimensions 6.35 cm × 6.35 cm × 16.51 cm

Application Scenarios

The 3500/33 (149992-01) is widely used in:

  • Oil and gas refining facilities

  • Thermal and combined-cycle power plants

  • Chemical processing and petrochemical plants

  • Large compressor and turbine protection systems

Typical applications include driving:

  • Local alarm panels

  • PLC digital monitoring inputs

  • Hardwired shutdown interlock circuits

Technical FAQ

Can the relays be set to latching or non-latching modes?
Yes. Each relay can be independently configured. Relays may be set to latch on alarm (requiring manual reset) or auto-reset when machine conditions return to normal.

Does this module require a separate termination card?
Yes. The module must be paired with a compatible 16-channel relay I/O termination assembly at the rear of the 3500 rack to provide physical field wiring screw terminals.