The Bently Nevada 125744-01 is a TMR (Triple Modular Redundant) Rack Interface Module (RIM) main card for the 3500 series machinery protection system. It serves as the primary communication interface for rack configuration, data retrieval, and integration with external monitoring software.
Item No :
125744-01Order(MOQ) :
1 PiecePayment :
EXW/CIFProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 125744-01 |
| Product Family | 3500 Machinery Protection System |
| Product Type | TMR Rack Interface Module (RIM) Main Card |
| Rack Position | Slot 1 (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 |
| TMR Function | Real-time monitor channel comparison and voting |
| Compatible Processors | TDXnet, TDIX, DDIX |
| 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) |
| Dimensions (H x W x D) | 241.3 mm x 24.4 mm x 241.8 mm |
| Weight | 0.91 kg (2.0 lb.) |
| Country of Origin | USA |
| Lifecycle Status | Active / Available as New Surplus |
| Model | Description | Typical Application |
|---|---|---|
| 125744-01 (this model) | TMR Rack Interface Module (main card) | Triple Modular Redundant configurations |
| 125744-02 | Standard Rack Interface Module (main card) | Standard (non-TMR) applications |
| 125768-01 | RIM I/O Module with RS-232/RS-422 Interface | Companion I/O for serial communication |
| 135031-01 | RIM I/O Module with Modem Interface | Companion I/O for modem communication |
| 125760-01 | Data Manager I/O Module | Connect two communication processors to rack |
| 3500/22M | Transient Data Interface (TDI) | Modern replacement with Ethernet/USB connectivity |
| 3500/05 | 19-inch System Rack | Physical housing for the RIM |
| 3500/15 | Power Supply Module | Required companion for rack operation |
Q1: What is the primary function of the 125744-01?
It is the TMR Rack Interface Module (main card) for the 3500 series machinery protection system. It serves as the primary communication interface for rack configuration, data retrieval, and integration with external monitoring software. 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: Where must the 125744-01 be installed?
The module must be installed in Slot 1 of the 3500 rack, adjacent to the power supply. Each 3500 rack requires exactly one RIM or TDI. The module provides certain common functions for the entire rack but is not part of the critical monitoring path .
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 is the TMR channel comparison function?
In TMR configurations, the 3500 system requires a TMR version of the RIM. The TMR RIM continually compares a specified output of 3 redundant monitors. If it detects that information from one monitor is no longer equivalent (within a configured percent) to the remaining two, it flags that monitor as being in error and places an event in the System Event List .
Q5: Does the 125744-01 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, the RIM is essential for rack configuration, data retrieval, and system diagnostics.
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.
Scan to Wechat :
Scan to WhatsApp :
