Description
The BENTLY 3500/32 is a full-height, four-channel relay module designed for the Bently Nevada 3500 Series Machinery Protection System. This module provides programmable relay outputs that can be configured to drive external alarm devices, sirens, or automated machinery shutdown loops based on the alert and danger levels evaluated by adjacent monitoring cards. By acting as a robust, fail-safe hardware interface, it bridges raw vibration diagnostic data directly with mechanical breaker circuits, ensuring immediate machinery protection when operational limits are breached.
Product Datasheet & Specifications
- Manufacturer: Bently Nevada (Baker Hughes)
- Part Number: 3500/32 (Commonly paired with 149986-01 or 125712-01 I/O modules)
- Module Type: 4-Channel Relays Card
- Relay Inputs: Accepts alarm configurations from any monitor module or combination of modules via the 3500 rack backplane
- Relay Output Types: Single-Pole, Double-Throw (SPDT) contacts
- Maximum Relay Contact Voltage: 250 V AC / 30 V DC
- Maximum Relay Switching Current: 5 Amperes
- Approximate Dimensions: 24.4 cm x 2.4 cm x 24.2 cm
- Approximate Weight: 820 grams (0.82 kg)
- Country of Origin: United States (USA)
- Environmental Range: Operating temperature from -30°C to +65°C under non-condensing relative humidity
BENTLY 3500/32
BENTLY 3500/32
BENTLY 3500/32
BENTLY 3500/32
Key Application Fields
- Power Generation Stations: Triggers immediate automatic turbine tripping loops when high shaft vibration thresholds are exceeded.
- Petrochemical Refining Enclosures: Provides safety interlocking controls for high-capacity cooling fans and process pumps.
- Oil & Gas Compressors: Direct emergency shutdown (ESD) path coordination for high-pressure gas extraction loops.
- Heavy Duty Manufacturing Lines: Manages safety trip relays across large milling gearboxes and heavy exhaust blowers.
- Marine & Drilling Platforms: Integrates machinery health alerts directly with main vessel automation systems.
Product Instructions & Guidelines
- Slots and Configurations: Insert the 3500/32 relay card into any available full-height channel slot within the 3500 rack enclosure, excluding slots 1 and 2, which are reserved for the Rack Interface Module and Power Supplies.
- I/O Module Matching: Ensure the matching Relay Input/Output (I/O) terminal module is properly installed into the rear position directly behind the main front control module before securing the card locks.
- Relay Programming Matrix: Use the 3500 Rack Configuration Software to customize individual relay drive logic. Relays can be set up using AND/OR logic gates, latching or non-latching behaviors, and energized/de-energized state choices.
- Wiring Termination Check: Terminate all control trip wires to the rear screw terminal blocks. Use shielded cable lines for long runs and route them away from high-power phase cables to avoid electromagnetic cross-talk.
- Regular Diagnostics: Periodically review the card’s health via the front-panel “OK” LED indicator. Run a manual loop trip test through software during planned machine maintenance windows to verify external breaker operation.
Q&A – Frequently Asked Questions
- Q: What is the main difference between Normally Energized and Normally De-energized relay states?
- A: Normally Energized (failsafe) drops the relay if the module loses power completely, causing a system trip. Normally De-energized remains open during power drops and requires an active signal to close, preventing false trips from power cuts.
- Q: Can a single relay on the 3500/32 be driven by alarms coming from multiple different vibration monitor cards?
- A: Yes. The configuration software allows you to program complex voting logic (e.g., 2-out-of-2 or 1-out-of-4) pulling alert values from multiple channels across the 3500 rack backplane.
- Q: Is it possible to swap this relay module out without turning off the entire 3500 system rack?
- A: Yes, the module supports full hot-swapping capabilities. However, you must carefully bypass or isolate any external tripping outputs linked to the module before removal to avoid accidental machinery shutdowns.
- Q: What does a flashing or dark front-panel “OK” LED tell the user?
- A: A dark or flashing LED indicates that the module has failed its internal self-test, has dropped communication with the Rack Interface Module, or has detected an issue with the rear I/O card hardware.
Recommended Hot Stock Models
- BENTLY NEVADA 3500/32 149986-01
- BENTLY NEVADA 3500/33 149999-01
- BENTLY NEVADA 3500/15 127610-01
- BENTLY NEVADA 3500/22M 288055-01
- BENTLY NEVADA 3500/42M 176449-02
- BENTLY NEVADA 3500/25 149369-01
- BENTLY NEVADA 330130-040-00-00
- BENTLY NEVADA 330130-080-00-00
- BENTLY NEVADA 330180-90-00
- BENTLY NEVADA 1900/65A-01-01-01-00-01
