Bently Nevada 125768-01

1. LEDs: Indicate the operating status of the module

2. Hardware Switches:

3. Configuration Port: Configure or retrieve machinery data

from only this rack using RS-232 protocol.

4. Rack Interface I/O Module: Daisy chain or configure racks

using RS-232 and RS-422 protocol

5. Data Manager I/O Module: Connect two Bently Nevada

Communication Processors to the 3500 rack.

Description:

The Rack Interface Module (RIM) is the primary interface to the

3500 rack. It supports a proprietary protocol used to

configure the rack and retrieve machinery information. The

RIM must be located in slot 1 of the rack (next to the power

supplies).

The RIM supports compatible Bently Nevada external

communications processors such as TDXnet, TDIX, and DDIX. 

While the RIM provides certain functions common to the

entire rack, the RIM is not part of the critical monitoring path

and has no effect on the proper, normal operation of the

overall monitoring system. One RIM is required per rack.

For Triple Modular Redundant (TMR) applications, the 3500

System requires a TMR version of the RIM. In addition to all the

standard RIM functions, the TMR RIM also performs "monitor

channel comparison."  The 3500 TMR configuration

implements monitor voting using the setup specified in the

monitor options. Using this method, the TMR RIM continually

compares the outputs from three (3) redundant monitors. If

the TMR RIM detects that the information from one of those

monitors is no longer within a configured percentof the

information of the other two monitors, it will flag that the

monitor is in error and place an event in the System Event List.

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