Description
Description
The Bently Nevada 3500/32M (order code 149986-02) is a 4-channel, full-height relay module designed for the 3500 Machinery Protection System. This module provides four independent relay outputs that serve as critical interfaces for alarm and machinery shutdown functions. It requires a 3500/22 Transient Data Interface (TDI) module to operate within the rack and supports complex, user-defined voting logic to ensure reliable machine protection.
Features
- Full-height module design for 3500 rack integration.
- Four independent, programmable relay outputs.
- Supports advanced alarm drive logic using AND/OR gates.
- Configurable via Bently Nevada 3500 Rack Configuration Software.
- Epoxy-sealed relay construction for environmental durability.
- Integrated arc suppression (250 Vrms) for contact protection.
Applications
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Electric Power: Steam turbine generators, gas turbines, and large water pumps.
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Oil & Gas: Centrifugal and reciprocating compressors, turbine-driven pumps, and offshore power systems.
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Petrochemical: Ethylene cracking gas compressors and ammonia compressors.
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Steel & Metallurgy: Blast furnace blowers and rolling mill motors.
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Maritime: Main propulsion systems and auxiliary power generation monitoring.
Technical Specifications
| Product Model |
3500/32M 149986-02 |
| Output Type |
Single-pole, double-throw (SPDT) relays |
| Number of Channels |
4 |
| Max Switched Voltage |
250 Vac / 30 Vdc |
| Max Switched Current |
2 A |
| Power Consumption |
5.8 W (typical) |
| Contact Life |
100,000 cycles @ 5 A, 24 Vdc or 240 Vac |
| Operating Temperature |
-30 degC to +65 degC |
| Storage Temperature |
-40 degC to +85 degC |
Installation Guidelines
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Rack Placement: Install in any slot to the right of the 3500/22 Transient Data Interface (TDI) module.
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Safety Warning: Always power down the rack before inserting or removing modules to prevent electrical damage or unexpected signal triggering.
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Wiring: Use caution when connecting high-voltage field wiring. Ensure no conductors are exposed to prevent shock hazards.
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Functional Safety: If used in SIL or hazardous area applications, restrict switched voltage to 30 Vdc/Vac to maintain compliance.
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Handling: Use standard ESD precautions when handling the module to protect internal circuitry.
FAQs
What is the 3500/32M 149986-02?
It is a 4-channel, full-height relay module for the Bently Nevada 3500 Monitoring System, used to provide alarm and control outputs for machinery protection.
Does this module support voting logic?
Yes, each of the four relay outputs can be independently programmed using AND/OR logic gates to trigger based on specific alarm inputs or channel statuses.
Where is this module installed?
The module is installed in the 3500 rack, specifically in any slot located to the right of the 3500/22 Transient Data Interface (TDI) module.
