Description
Description
The Bently Nevada 3500/33 149986-01 is a full-height, 16-channel relay module designed for the 3500 Machinery Protection System. This module provides 16 independent relay outputs that can be programmed to perform specific voting logic for machinery protection and control. It is designed to be installed in any slot to the right of the Transient Data Interface (TDI) module within a 3500 rack.
Features
- 16 independent relay outputs.
- Integrated Alarm Drive Logic for sophisticated alarm management.
- Supports AND/OR logic functions based on Alert, Danger, or Not-OK status.
- Programmable via 3500 Rack Configuration Software.
- Hot-swappable design allows for removal or installation without powering down the rack.
- Full-height module form factor.
Applications
- Critical machinery protection in oil and gas, power generation, and petrochemical industries.
- Turbine monitoring (bearings and stator windings).
- Pump and motor protection (winding and bearing housing temperatures).
- Gearbox monitoring (internal friction and lubrication failure detection).
- General industrial equipment protection (fans, blowers, extruders).
Technical Specifications
| Model |
3500/33 149986-01 |
| Channels |
16 Relay Outputs |
| Max Switched Voltage |
125 Vdc / 30 Vdc |
| Max Switched Current |
5 A |
| Min Switched Current |
100 mA @ 5 Vdc |
| Power Consumption |
5.8 Watts (typical) |
| Relay Contact Life |
10,000 cycles |
| Operating Temperature |
-30 degC to +65 degC |
| Storage Temperature |
-40 degC to +85 degC |
| Enclosure Rating |
IP20 |
Installation Guidelines
- Ensure the rack is powered down or follow hot-swap procedures if the system supports it.
- Insert the 3500/33 module into any available slot to the right of the Rack Interface Module (TDI).
- Install the corresponding I/O module (field wiring module) on the backplane behind the 3500/33 module before applying power.
- Use shielded cabling for field connections to minimize EMI interference.
- Ensure proper grounding of the 3500 rack to maintain signal integrity and safety.
- Handle with ESD precautions to prevent damage to sensitive electronic components.
FAQs
What is the 3500/33 149986-01 used for?
It provides 16 relay outputs for machinery alarms and shutdown logic, essential for protecting critical rotating equipment.
What software is required for configuration?
The module is configured using the 3500 Rack Configuration Software, typically requiring version 3.3 or higher.
Is this module hot-swappable?
Yes, the 3500/33 is designed to be removed or installed while the rack is powered without disrupting the operation of other modules.
