Description
Product Description
The Bently Nevada 3500/32M 4-Channel Relay Module is a full-height relay output module designed for use within the Bently Nevada 3500 Machinery Protection System. The module delivers four independently configurable relay outputs for machinery alarm annunciation, shutdown logic, and process protection functions.
Each relay channel supports programmable voting logic and can be configured using AND/OR alarm conditions through the 3500 Rack Configuration Software. The module can process alert, danger, Not-OK, and proportional value inputs from any monitor channel installed in the rack, allowing flexible integration into turbine, compressor, pump, and rotating equipment protection strategies.
The relay module is engineered with epoxy-sealed SPDT relays and integrated arc suppression to improve operational reliability in industrial environments with frequent switching operations.
Key Features
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Four independently programmable relay outputs
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Full-height module architecture for 3500 racks
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SPDT relay contacts with configurable energized states
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Supports complex AND/OR voting logic
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Compatible with alarm, danger, and Not-OK status inputs
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Integrated arc suppression for improved relay longevity
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Epoxy-sealed relays for environmental protection
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LED indicators for communication and alarm diagnostics
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Configurable using Bently Nevada 3500 Rack Configuration Software
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Designed for machinery protection and shutdown systems
Technical Specifications
| Parameter |
Specification |
| Brand |
Bently Nevada |
| Model |
3500/32M |
| Product Type |
4-Channel Relay Module |
| System Compatibility |
3500 Machinery Protection System |
| Module Format |
Full-height |
| Relay Channels |
4 |
| Relay Type |
Single-pole double-throw (SPDT) |
| Relay Operation |
Normally Energized or Normally De-Energized selectable |
| Typical Power Consumption |
5.8 W |
| Communication Indicators |
TX/RX LEDs |
| Alarm Indicators |
Channel Alarm LEDs |
| Status Indicator |
OK LED |
| Relay Sealing |
Epoxy-sealed |
| Arc Suppression |
Standard integrated suppressor |
| Relay Contact Life |
100,000 cycles at 5 A, 24 VDC / 240 VAC |
| Minimum Switched Current |
100 mA at 12 VDC |
| Maximum DC Switching Current |
2 A at 30 VDC |
| DC Voltage Rating |
Up to 125 VDC |
| AC Voltage Rating |
Up to 250 VAC |
| Maximum AC Switching Current |
2 A |
| Maximum Switching Power |
450 VA |
| Operating Temperature |
-30°C to +65°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
95% non-condensing |
| Main Module Dimensions |
241 × 24.4 × 242 mm |
| Main Module Weight |
0.7 kg |
| I/O Module Dimensions |
241 × 24.4 × 99.1 mm |
| I/O Module Weight |
0.4 kg |
| Rack Space Requirement |
1 full-height front slot + 1 rear I/O slot |
Relay Logic Functions
The Bently Nevada 3500/32M module supports programmable relay behavior for advanced machinery protection schemes. Each relay output can be assigned to:
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Alert conditions
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Danger alarms
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Not-OK monitor status
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Process variable thresholds
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Multi-channel voting logic
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Combined rack alarm conditions
This flexibility allows the module to operate as part of shutdown systems, annunciators, interlocks, and plant-wide protection architectures.
Application Areas
Typical applications include:
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Turbine shutdown systems
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Compressor protection panels
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Generator alarm systems
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Critical pump monitoring
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Plant annunciation systems
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Rotating equipment trip logic
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Emergency protection circuits
FAQ
What is the function of the 3500/32M module?
The module provides programmable relay outputs used for alarms, shutdowns, annunciation, and machinery protection logic within a 3500 monitoring rack.
Can each relay channel be configured independently?
Yes. Each of the four relay outputs supports independent configuration and separate voting logic assignments.
What relay contact type is used?
The module uses SPDT epoxy-sealed relays with integrated arc suppression for industrial reliability.
Is the relay state configurable?
Yes. Relay channels can be configured as Normally Energized or Normally De-Energized through onboard switch settings.
