Description
Processing inputs directly from RTDs and Thermocouples, the Bently Nevada 3500/60-01-CN provides dedicated, continuous machinery protection within the 3500 Series chassis by monitoring critical machine temperatures without relying on legacy analog recorder outputs. This module is engineered for high-density, high-reliability applications where temperature monitoring is integrated directly into the digital control architecture of the facility.
This specific configuration uses the RTD/TC Non-isolated I/O Module with internal terminations, optimizing panel space and streamlining terminal wiring. Equipped with CN approvals, it is compliant with country-specific regulatory standards for installation in demanding industrial environments.
Key Features
-
Continuous Monitoring: Accepts both Resistance Temperature Detector (RTD) and Thermocouple (TC) inputs to compare against user-defined alarm setpoints.
-
Internal Terminations: Compact termination design minimizes external wiring components and reduces the footprint required in marshalling cabinets.
-
No Recorder Outputs: Streamlined design focused on digital integration via the 3500 backplane, eliminating redundant analog loop hardware.
-
Integrated Alarm Logic: Provides independent Alert and Danger setpoints for each of its active channels.
Applications
- Steam, gas, and hydro turbine bearing temperature tracking.
- Large electric motor and generator stator winding protection.
- High-pressure reciprocating and centrifugal compressor thermal diagnostics.
- Pumping station and mechanical gearbox bearing casing safety loops.
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Bently Nevada (Baker Hughes) |
| Model Number |
3500/60-01-CN |
| Series |
3500 Machinery Protection System |
| Monitor Type |
Temperature Monitor (No Recorder Outputs) |
| I/O Module Type |
RTD/TC Non-isolated I/O Module, Internal Terminations |
| Power Consumption |
Nominal 7 Watts |
| Agency Approvals |
CN (Country Specific Approvals / China Standards Compliant) |
| Country of Origin |
United States (USA) |
| Shipping Weight (Calculated) |
2.0 kg / 4.4 lbs |
Connections & Interfaces
| Terminal Block Section |
Functional Assignment |
| RTD/TC Input Terminals |
Accepts 3-wire or 4-wire RTDs, or direct thermocouple element connections. |
| Shield Terminals |
Internal chassis-ground connection points for drain wire shielding. |
Empirical Engineering Insights
Alternative Models & Compatibility
The -01 non-isolated internal termination I/O module is physically distinct from the -02 isolated equivalent. If replacing an isolated unit with this module, ensure that ground loop possibilities have been analyzed and eliminated in your field wiring layout. Use the 3500 Rack Configuration Software to confirm channel assignments and sensor parameters match the previous module's database profile.
Application Pitfalls & Engineering Notes
Because this is a non-isolated I/O module, the thermocouple and RTD sensors must be electrically isolated at the point of measurement to prevent ground potential differences from corrupting system data or damaging the input circuitry. Avoid routing sensor field wiring in close proximity to high-power phase cables to minimize electromagnetic interference (EMI).
Commissioning & Wiring Tips
When utilizing thermocouples with internal termination blocks, Cold Junction Compensation (CJC) is automatically managed at the local terminals. To prevent temperature read errors, do not subject the rear of the 3500 rack or the termination blocks to direct drafts or rapid localized temperature variations.
Installation Guidelines
CRITICAL WARNING: De-energize the entire 3500 rack before inserting or removing the I/O module. Do not hot-swap non-isolated I/O cards while field wiring is connected and energized. Ensure field sensor lines are fully discharged of static charge prior to terminating connections.
1
Verify that the 3500 system power is switched off and lock-out procedures are active.
2
Insert the main monitor module into the front slot of the 3500 rack and tighten the securing chassis screws.
3
Align and install the 3500/60-01-CN I/O module into the corresponding rear slot of the rack.
4
Terminate your field RTD/TC wiring according to the channel layout specified in your plant design drawings, ensuring correct polarity and shield isolation.