Description

Product Description

The Bently Nevada 3500/33-01-05 is a rack-based relay interface module designed for integration within the Bently Nevada 3500 Machinery Protection System. It delivers 16 independently configurable SPDT relay outputs used for machine protection logic, alarm handling, and interlock execution.

The module operates as part of the 3500 rack architecture and is installed in any full-height slot located to the right of the Transient Data Interface (TDI). It is widely deployed in critical rotating machinery protection applications such as turbines, compressors, and large pump systems.

The “01-05” configuration denotes a 16-channel relay output variant with a specific I/O/contact setup while maintaining identical core electrical and mechanical characteristics across standard configurations.

Electrical Characteristics

• Total Relay Channels: 16 independent outputs

• Relay Type: SPDT (Form C contact structure)

• Typical Power Consumption: 5.8 W

• Arc Suppression: Integrated 250 Vrms suppression network

• Relay Construction: Epoxy-sealed contacts for enhanced vibration and contamination resistance

• Minimum Switching Load: 100 mA @ 5 VDC

Contact Load Ratings

DC Resistive Loads

• Maximum Current: 5 A

• Maximum Voltage: 125 VDC (standard configuration) / 30 VDC (failsafe variant)

• Power Handling:

• 70 W @ 24 VDC

• 10 W @ 48 VDC

• 9 W @ 60 VDC

AC Resistive Loads

• Maximum Current: 5 A

• Maximum Voltage: 250 VAC

• Maximum Power: 1200 VA

Low-Level Signal Operation

• Minimum Load Capability: 1 mA @ 1 VDC (gold-contact operation mode)

Relay Configuration & Logic Functions

• Channels arranged in 4 groups of 4 outputs

• Each group selectable as Normally Energized (NE) or Normally De-Energized (ND)

• Fully programmable Alarm Drive Logic per channel

• Supports Boolean logic (AND / OR) for voting strategies

• Input sources include:

• Alert conditions

• Danger alarms

• Not-OK system status

• Measured variable signals from any rack monitor module

• Independent logic assignment for each relay channel

Mechanical Data

Main Module

• Dimensions: 241 × 24.4 × 242 mm

• Weight: 0.7 kg

I/O Module

• Dimensions: 241 × 24.4 × 99.1 mm

• Weight: 0.4 kg

Rack Installation Requirements

• Main unit: 1 full-height front slot

• I/O unit: 1 full-height rear slot

• Placement: Right side of TDI module in 3500 rack system

Environmental Ratings

• Operating Temperature: –30°C to +65°C

• Storage Temperature: –40°C to +85°C

• Humidity: Up to 95% non-condensing

• Designed for continuous duty in harsh machinery monitoring environments

Typical Applications

• Turbomachinery protection systems

• Compressor and turbine shutdown logic

• Pump vibration alarm interlocking

• Process safety and sequencing control

• Industrial condition monitoring systems

FAQ

Q1: What does the 01-05 configuration represent?
It defines a specific relay output and I/O configuration variant while maintaining identical core module architecture.

Q2: Can each relay channel be independently programmed?
Yes. All 16 channels support independent Alarm Drive Logic configuration.

Q3: Is the module suitable for safety interlock applications?
Yes, it is commonly used for alarm annunciation and interlock logic in critical machinery systems.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems