3500/20 125744-02 | Bently Nevada Rack Interface Module

Description

The 3500/20 125744-02 is a rack interface module built by Bently Nevada for configuring racks and retrieving machine information. This module supports the Bently Nevada proprietary protocol and must be located in slot 1 of the rack. It provides the support needed to connect the External Transient Data Interface (TDIX) to the External Dynamic Data Interface (DDIX). The module has a typical power consumption of 4.75 watts, a maximum cable length of 2.1 meters, and a storage temperature of -40 degrees Celsius to +85 degrees Celsius. The maximum baud rate is 38.4 k baud and the weight is 2 kg.

The module's operation and maintenance manual states that the firmware IC chip is only compatible with PWA 125744-01 version P or higher and PWA 125744-02 version N or higher, and does not support earlier versions of PWA. The module supports Hayes AT-compatible protocols developed by Bently Nevada up to 56k baud.

The front panel of the module is standard for RS232 serial communication with a data rate of 38.4k baud. The standard for I/O module is RS232/RS422 serial communication, modem communication data rate 38.4k baud, serial communication 14.4k baud, modem communication. The front panel light two tubes indicate when the rim is operating properly. TX/RX indicates when the rim communicates with the other 35 rack modules. TM indicates when 35 racks are traveling. The configuration represents the configuration that 35 racks have. I/O module relays indicate when 35 racks are operating normally or when a fault is detected on the rack. The user can choose "Open" or "closed" to notify a of the no-no condition. This relay always operates as "on".

• Manufacturer : Bently Nevada

• Product No. : 125744-02

• Product Type : Rack Interface Module

• Made in U.S.A 

• Power Consumption : 4.75 watts, typical

• Cable length : 2.1 metres (7 feet) maximum

• Storage Temperature : -40 °C to +85 °C (-40 °F to +185 °F).

• Baud rate : 38.4 k baud maximum

• Shipping Weight : 2 Kg

The Rack Interface Module (RIM) is the primary interface to the3500 rack. It supports a proprietary protocol used toconfigure the rack and retrieve machinery information. TheRIM must be located in slot 1 of the rack (next to the powersupplies). The RIM supports compatible Bently Nevada externalcommunications processors such as TDXnet, TDIX, and DDIX. While the RIM provides certain functions common to theentire rack, the RIM is not part of the critical monitoring pathand has no effect on the proper, normal operation of theoverall monitoring system. One RIM is required per rack. For Triple Modular Redundant (TMR) applications, the 3500System requires a TMR version of the RIM. In addition to all thestandard RIM functions, the TMR RIM also performs "monitorchannel comparison."  The 3500 TMR configurationimplements monitor voting using the setup specified in themonitor options. Using this method, the TMR RIM continuallycompares the outputs from three (3) redundant monitors. Ifthe TMR RIM detects that the information from one of thosemonitors is no longer within a configured percentof theinformation of the other two monitors, it will flag that themonitor is in error and place an event in the System Event List.

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