The Bently Nevada 3500/20-02-02-00 is a TMR (Triple Modular Redundant) Rack Interface Module (RIM) for the 3500 series machinery protection system, supplied as a complete set with two key components: the 125744-01 TMR Rack Interface Module (main card) and the 125768-01 RIM I/O Module with RS-232/RS-422 serial communication interface.
Item No :
3500/20-02-02-00Order(MOQ) :
1 PiecePayment :
EXW/CIFProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 3500/20-02-02-00 |
| Product Type | TMR Rack Interface Module (RIM) |
| Module Option Code | -02 = TMR RIM (Triple Modular Redundant) |
| I/O Module Option | -02 = RS-232/RS-422 interface I/O |
| Agency Approval | -00 = None |
| Main Card Part Number | 125744-01 (TMR Rack Interface Module) |
| I/O Module Part Number | 125768-01 (RIM I/O Module with RS-232/RS-422 Interface) |
| Rack Position | Slot 1 (must be adjacent to power supply) |
| Communication Standards | RS-232 / RS-422 serial communications |
| Communication Protocol | Bently Nevada proprietary protocol |
| Baud Rate | 38.4 k baud maximum (auto baud capable) |
| RS-232 Cable Length | 30 meters (100 feet) maximum |
| RS-422 Cable Length | 1200 meters (4000 feet) maximum |
| Front Panel LEDs | OK, TX/RX, TM, CONFIG OK |
| Address Switch | 63 selectable rack addresses |
| Configuration Keylock | RUN / PROGRAM mode selector |
| Power Consumption | 4.75 W typical |
| Operating Temperature | -30°C to +65°C (-22°F to +150°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 95%, non-condensing |
| Dimensions (RIM Main Card) | 241.3 mm x 24.4 mm x 241.8 mm |
| Weight (RIM Main Card) | 0.91 kg (2.0 lb.) |
| Dimensions (I/O Module) | 241.3 mm x 24.4 mm x 99.1 mm |
| Weight (I/O Module) | 0.45 kg (1.0 lb.) |
| Model | Description | Typical Application |
|---|---|---|
| 3500/20-02-02-00 (this model) | TMR RIM with RS-232/RS-422 I/O | Triple Modular Redundant applications |
| 3500/20-01-02-00 | Standard RIM with RS-232/RS-422 I/O | Standard 3500 rack communication |
| 3500/20-01-01-00 | Standard RIM with internal modem I/O | Standard rack with modem communication |
| 3500/20-02-01-00 | TMR RIM with internal modem I/O | TMR rack with modem communication |
| 125744-01 | TMR RIM spare (main card) | Spare/replacement for TMR RIM |
| 125744-02 | Standard RIM spare (main card) | Spare/replacement for standard RIM |
| 125768-01 | RIM I/O Module with RS-232/RS-422 Interface | Spare I/O for serial configuration |
| 135031-01 | RIM I/O Module with modem interface | Spare I/O for modem configuration |
Q1: What is the primary function of the 3500/20-02-02-00?
It is a TMR Rack Interface Module that serves as the primary communication interface for the 3500 rack, supporting Bently Nevada's proprietary protocol for rack configuration and machinery data retrieval. In TMR configurations, it performs real-time monitor channel comparison — continuously comparing outputs from three redundant monitors and flagging any monitor whose output differs from the other two beyond a configured percentage.
Q2: Can the 3500/20-02-02-00 be installed in any slot?
No. It must be installed in Slot 1, adjacent to the power supply. Each 3500 rack requires exactly one RIM or TDI. For TMR applications, two 3500/15 Power Supplies are required, and the rack jumper must be set to the TMR position.
Q3: What is the difference between 125744-01 and 125744-02?
The 125744-01 is the TMR Rack Interface Module (main card) that performs monitor channel comparison functions for Triple Modular Redundant configurations. The 125744-02 is the Standard Rack Interface Module (main card) for non-TMR applications. The TMR version is required when the rack is configured for triple redundancy.
Q4: What are the maximum cable lengths supported?
The 125768-01 supports maximum cable lengths of 30 meters (100 feet) for RS-232 and 1200 meters (4000 feet) for RS-422. For longer distances, RS-422 communication should be selected to prevent signal degradation.
Q5: Does the TMR RIM affect the critical monitoring path?
No. While the RIM provides certain common functions for the entire rack, it is not part of the critical monitoring path. The monitoring system's automatic machinery protection functions continue to operate normally even if the RIM is removed or fails. However, in TMR configurations, the TMR RIM performs essential monitor channel comparison to maintain high-integrity protection.
The Bently Nevada 3500/60-01-00 is a 6-Channel Temperature Monitor for the 3500 Machinery Protection System. The complete configuration consists of the 163179-01 Temperature Monitor (main card) and the 133819-01 RTD/TC I/O Module with internal terminations.
The Bently Nevada 3500/53M-01-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System, configured with the 286566-01 Overspeed Detection main card and the 133396-01 Overspeed Detection I/O Module.
The Bently Nevada 3500/53M-01-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System. The 3500/53M is the split-base M-series version, using the 286566-01 main card with the 133396-01 rear I/O module. It is not drop-in compatible with the legacy 3500/53 (133388-01).
The Bently Nevada 3500/53M-01-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System. The 3500/53M is the split-base M-series version, using the 286566-01 main card with the 133396-01 rear I/O module. It is not drop-in compatible with the legacy 3500/53 (133388-01).
The Bently Nevada 3500/53-03-00 is a Single-Channel Electronic Overspeed Detection Module for the 3500 Machinery Protection System, configured with the 133388-01 Overspeed Detection main card and the 133396-01 Overspeed Detection I/O Module.
he Bently Nevada 288062-02 is the Tachometer Module main card for the 3500/50M Tachometer Module in the 3500 Machinery Protection System. It is a dual-channel module that accepts input from proximity probes or magnetic pickups to determine shaft rotational speed, rotor acceleration, and rotor direction.
The Bently Nevada 3500/50M-01-00 is a 2-Channel Tachometer Module for the 3500 Machinery Protection System, configured with the 288062-02 Tachometer main card and the 133442-01 I/O Module with internal terminations. The "M" designation indicates M-series functionality, providing enhanced integration with System 1 diagnostic software.
The Bently Nevada 133442-01 is a dual-channel Tachometer I/O Module with Internal Terminations, designed for the 3500/50 Tachometer Module in the 3500 Machinery Protection System. The module conditions raw pulse signals to determine shaft rotational speed, rotor acceleration, and rotor direction, and can supply conditioned Keyphasor signals to the rack backplane for use by other monitoring modules.
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