Bently Nevada 3500/33-SIL2-01-00
Full name: 16 Channel Relay Module 16 Channel Relay Output Module (SIL2 Safety Level Version)
Baker Hughes 3500 TSI Unit Protection System, used for alarm and interlock signal output

3500/33 Relay Module
1、 Basic Overview
3500/33 is a full-size relay card. The alarm status of all monitoring modules (3500/40M, 42M, 50M, 64M, etc.) in the receiver rack is driven by internal logic configuration to drive external relay contacts and output alarm and shutdown interlock signals.
Model code analysis: 3500/33-SIL2-01-00
SIL2: Possessing SIL2 safety integrity certification, suitable for safety instrument circuits
01: Built in terminal I/O version
00: Basic authentication options
Complete configuration: Front card 3500/33-SIL2-01-00+matching rear I/O terminal board 149992-01
Front card part number panel identification: 149986-01 (hardware body PN)
2、 Core functional parameters
Channel configuration: 16 independent SPDT single pole double throw relays, divided into 4 groups (4 channels/group)
Configuration logic
Each channel can independently program AND/OR voting logic; Can be associated with any monitoring channel Alert warning, Danger danger status; Support channel bypass
Relay contact specifications
Type: Epoxy resin sealed SPDT, built-in arc suppressor
Load: Maximum 6A; AC maximum 400Vac/DC maximum 300Vdc
Support unified settings for each group: two working modes: normally off ND/normally on NE
Panel indicator light
OK (module normal), TX/RX (rack communication), 16 independent channel alarm LED
hardware features
Support hot swapping; Backboard power supply; Typical power consumption 5.8W
Environment: -30 ℃~+65 ℃, no condensation
3、 Key distinctions in procurement (easily confused)
Brief Differences in Model Channel Safety Levels
3500/33-SIL2-01-00 16 channel SIL2 certified safety interlock project is preferred (this model)
3500/33-01-00 16 channel standard type, without SIL2 ordinary alarm circuit for use
3500/32M 4-channel standard small slot requirement, semi high card
⚠️ Important reminder:
The SIL2 version is not compatible with the regular 3500/33 firmware and safety certification files, and the safety interlock modification project cannot be directly exchanged!
4、 Lifecycle information
Continuous supply from the original factory; Market source: brand new original, complete disassembly and testing spare parts
Warranty reference: Brand new original 12 months, disassembled spare parts 3-6 months
5、 Typical applications
TSI systems for power plant steam turbines, gas turbines, and centrifugal compressors;
Used for vibration, displacement, speed, pressure pulsation over limit alarm, unit shutdown interlock circuit (SIL2 safety circuit).

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