Home » Bently Nevada 3500/32-01-01 4-Channel Relay Module
Bently Nevada

Bently Nevada 3500/32-01-01 4-Channel Relay Module

SKU: 3500/32-01-01(125712-01+125720-01)
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Technical specifications

  • Manufacturer: Bently Nevada

  • Condition：New with Original Package

  • Product Type: Relay Output Modules

  • Country of Origin: USA

  • Payment:T/T, Western Union

  • Shipping port: Xiamen

  • Warranty: 12 months

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1-Year Warranty on All Products

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Product Description

The Bently Nevada 3500/32-01-01, also cataloged as the 3500/32 4-Channel Relay Module, operates as a dedicated hardware component for hard-wired alarm and trip execution within the 3500 Machinery Protection System.

Suffix Breakdown & Model Matrix

Code
Description
3500/32-01-01
Configured 4-Channel Relay Module with CSA/NRTL/C Class I Div 2 approval
-01 (position 1)
4-Channel Relay I/O Module, rear I/O
-01 (position 2)
Agency approval CSA/NRTL/C, Class I Div 2 Groups A-D, T4
125712-01
Front logic board (spare/main)
125720-01
Rear I/O terminal module (spare/field wiring)

Hardware Specifications

Parameter
Specification
Model
3500/32-01-01
Brand
Bently Nevada
Origin
USA
Weight
Front: 0.7 kg; Rear: 0.4 kg
Dimensions
Front: 241 x 24.4 x 242 mm; Rear: 241 x 24.4 x 99.1 mm
Operating Temp
-30 deg C to +65 deg C
Power Consumption
6 W typical
Relay Channels
4 independent, each DPDT (two SPDT Form C wired as DPDT)
Contact Rating (Resistive)
5 A max; 30 VDC / 250 VAC; 120 W DC / 600 VA AC
Min Switched Current
10 mA @ 5 VDC
Contact Life
100,000 ops at 5 A, 24 VDC or 120/240 VAC
Response Time
< 10 ms
Arc Suppressor
250 Vrms standard, installed
Selectable Mode
Normally De-energized or Normally Energized
Backplane Isolation
Electrically isolated, epoxy-sealed contacts
Configuration Tool
3500 Rack Configuration Software
Indicators
OK, TX/RX, CH ALARM per channel
Compliance
API 670, EN 61010-1, EN 61000-6-2/6-4, CSA/NRTL/C
Rack Slots
1 full-height front + 1 full-height rear

Eddy-Current Probe Scaling and Gap Voltage Validation

The 3500/32-01-01 receives alert and danger logic states driven by monitor modules that process eddy-current probe signals from proximity transducers. Proper gap voltage validation targets -10 VDC at probe tip during installation to establish the linear range of the eddy-current sensor. Cross-talk suppression between adjacent probe loops prevents false alarm drive logic execution. Rotor dynamics data from vibration monitors feed into the Alarm Drive Logic, where programmable voting schemes such as 2oo2, 2oo3, or majority are applied before the relay contacts transition. The module itself does not perform probe scaling; however, it executes the final hard-wired output based on validated monitor channel states.

Frequently Asked Questions

Q: Does the 3500/32-01-01 support hot-swap insertion while the rack is powered?
A: No. The module is not designed for hot-swap. Power down the 3500 rack before inserting or removing the front logic board or rear I/O terminal module to prevent backplane damage and contact arcing.
Q: What is the backplane current draw of the 3500/32-01-01?
A: The module consumes approximately 6 W from the 3500 rack backplane. At 24 VDC backplane supply, this equals roughly 250 mA. Verify total rack power budget across all installed modules before finalizing configuration.
Q: Can the 3500/32 be used for TMR safety applications?
A: No. TMR applications require the 3500/34 Triple Redundant Relay Module. The 3500/32 provides single-module relay execution with electrically isolated contacts but no triple modular redundancy architecture.

Field Installation Guidelines

Mount the front logic module (125712-01) in a full-height front slot immediately to the right of the Rack Interface Module. Install the rear I/O terminal module (125720-01) in the corresponding full-height rear slot. Use properly sized ferrules on all field wiring terminations entering the 125720-01 barrier terminal block. Route relay output cables separately from eddy-current probe signal cables to prevent inductive coupling and cross-talk. Verify that the arc suppressor rating of 250 Vrms matches the switched load voltage. For CSA/NRTL/C Class I Div 2 installation, ensure all field wiring complies with the governing electrical code for hazardous locations. Confirm relay mode selector switch position (normally de-energized or normally energized) before applying power. After configuration download via 3500 Rack Configuration Software, validate each channel's contact operation using the CH ALARM LED and a continuity meter at the terminal block.

Other Attributes

  • Series: 24765 and 135613 Case Expansion Transducer Systems
  • Country of Origin: USA
  • Lead Time: In Stock, 2 Working Days


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