Bently3500/22M Transient Data Interface Module

Description

The 3500/22M Transient Data Interface (TDI) is the interface between the 3500 monitoring system and compatible software (System 1 Condition Monitoring and Diagnostic software and 3500 System Configuration software). The TDI combines the function of a 3500/20 Rack Interface Module (RIM) with the data collection capability of a communication processor such as TDXnet. The TDI resides in the slot adjacent to the power supplies of a 3500 rack. It interfaces with M series monitors (3500/40M, 3500/42M, etc.) to continuously collect steady state and transient dynamic (waveform) data and pass this data through an Ethernet link to the host software. Refer to the Compatibility section at the end of this document for more information. Static data capture capability is standard with the TDI. However, using an optional Channel Enabling Disk will allow the TDI to capture dynamic and high-resolution transient data as well. The TDI incorporates the communication processor function within the 3500 rack. Although the TDI provides certain functions common to the entire rack, it is not part of the critical monitoring path and has no effect on the proper, normal operation of the overall monitor system for automatic machinery protection. Every 3500 rack requires one TDI or RIM, which always occupies Slot 1 (next to the power supplies).

I/O Module Signal Common Terminal

Both versions of the TDI I/O Module now include a 2-pin connector for connecting Signal Common to a single point Instrument Ground for the rack. When this is done, the selector switch on the side of the Power Input Module (PIM) must be slid in the direction of the arrow marked "HP" to isolate Signal Common from chassis (safety) ground.

Data Collection Keyphasor Inputs

l Supports the four 3500 system Keyphasor signals. The speed range support is based on the number of dynamic channels enabled:

l Supports multiple events per revolution speed inputs up to 20 kHz

Startup/Coastdown Data

l Data collected at selected increments of speed and time l Increasing and decreasing speed intervals are independently programmable l Initiation of transient data collection based on detecting the machine speed within one of two programmable windows l The number of transient events that can be collected is only limited by the available memory in the module

Alarm Data Collection

l Pre- and post-alarm data l Static values collected at one second intervals for 10 minutes before the event and 1 minute after the event l Static values collected at 100 ms intervals for 20 seconds before the event and 10 seconds after the event l 2.5 minutes of waveform data collected at 10-second intervals before the alarm and 1 minute of waveform data collected at 10-second intervals after the alarm

Static Values Data

l TDI will collect the static values including the values measured by the monitors. l TDI provides four nX static values for each point. Amplitude and phase are returned for each of the values.

Waveform Sampling

l Collection of waveforms for 48 channels. l DC-coupled waveforms l Simultaneous Synchronous and Asynchronous data sampled during all operational modes l User-configurable Synchronous

o 1024 samples/rev for 2 revolutions 

o 720 samples/rev for 2 revolutions 

o 512 samples/rev for 4 revolutions 

o 360 samples/rev for 4 revolutions 

o 256 samples/rev for 8 revolutions 

o 128 samples/rev for 16 revolutions 

o 64 samples/rev for 32 revolutions 

o 32 samples/rev for 64 revolutions 

o 16 samples/rev for 128 revolutions

l Asynchronous data sampled to support an 800-line spectrum at the following frequency spans:

o 10 Hz 

o 20 Hz 

o 50 Hz 

o 100 Hz 

o 200 Hz 

o 500 Hz 

o 1000 Hz 

o 2000 Hz 

o 5000 Hz

o 10 kHz 

o 20 kHz 

o 30 kHz

l Asynchronous data is anti-alias filtered l Channel Pairs for providing Orbit or synchronous full spectrum presentations can be split among multiple monitors. For asynchronous full spectrums the channels must be within a monitor

channel pair (30 kHz frequency span data will not be phase correlated between channel pairs)

Communications