Bently Nevada 3500/33 149992-01

Bently Nevada 3500/33 149992-01

Product Overview: The 149992-01 is the rear I/O (Input/Output) module for the Bently Nevada 3500/33 16-Channel Relay Module. It is the physical relay output board that contains the 16 SPDT relay contacts and their associated terminal connections. This module works in conjunction with the main control module (149986-01) to provide the complete 16-channel relay output function. The 149992-01 is the standard (non-failsafe) relay output module; a failsafe variant (149992-02) is also available.

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Description

Bently Nevada 3500/33 149992-01

Technical Specifications:

  • Module Type: Full-height, 16-channel relay output (rear I/O)
  • Relay Type: SPDT (Single Pole Double Throw)
  • Contact Rating: 2A at 250V AC / 30V DC
  • Operating Temperature: -30°C to +65°C (-22°F to +150°F)
  • Storage Temperature: -40°C to +85°C (-40°F to +185°F)
  • Humidity: 95% non-condensing

Functional Features:

  • Provides 16 physical SPDT relay contacts for external alarm and trip connections
  • Receives drive signals from the companion main control module (149986-01)
  • Screw terminal connections for field wiring to external systems
  • Standard relay operation (non-failsafe)
  • Also available in failsafe variant (149992-02) for applications requiring de-energize-to-trip safety

Application Scenarios:

  • Paired with 149986-01 main control module for complete 16-channel relay output
  • High-density alarm routing in large machinery protection systems
  • External trip circuits, annunciator panels, and DCS/ESD interfaces

Performance Parameters:

  • Channel count: 16 independent relay channels
  • Contact rating: 2A at 250V AC / 30V DC
  • Relay response time: Less than 10 ms typical
  • Contact life: 100,000 operations at rated load

Material Composition:

  • High-reliability SPDT relay contacts
  • Multi-layer PCB with conformal coating
  • Screw terminal blocks for field wiring connections
  • Metal module enclosure

Structural Features:

  • Full-height rear I/O module form factor
  • Screw terminal connections for all 16 relay contacts (common, normally open, normally closed)
  • Mates with the 149986-01 main control module via the rack backplane

Working Principle:
The 149992-01 receives relay drive signals from the companion 149986-01 main control module via the rack backplane. Based on these signals, it physically switches the 16 SPDT relay contacts, connecting or disconnecting external field wiring circuits as programmed by the alarm drive logic.

Installation Requirements:

  • Install in the full-height rear slot corresponding to the 149986-01 main control module
  • Connect field wiring to the screw terminals for each relay channel
  • Ensure proper wire gauge and torque specifications for terminal connections

Usage Notes:

  • The 149992-01 is the standard relay output module; for failsafe (de-energize-to-trip) applications, use the 149992-02 variant
  • This module cannot function independently — it requires the 149986-01 main control module
  • Spare part availability: 149992-01 is the standard spare; 149992-02 is the failsafe spare

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