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Bently Nevada 149787-01 TIM Input Card

The Bently Nevada 149787-01, also cataloged as the 149787-01 TIM Input Card, operates as a dedicated hardware component for simultaneous vibration signal acquisition within the Trendmaster Dynamic Scanning Module (DSM) system. It processes TIM sensor inputs through two independent input lines with synchronized sampling capability.

Hardware Specifications

Parameter	Specification
Model	149787-01
Brand	Bently Nevada
Product Type	TIM Input Card
System Platform	Trendmaster Dynamic Scanning Module (DSM)
Input Lines	2 input lines per card, both lines sampled simultaneously
Supported TIM Modules	All proTIM modules, 1900/15, 1900/25, 1900/55
TIM Cable Length	1200 m (4000 ft) maximum
A/D Resolution	14 bits
Accuracy	+/-2% of full-scale range
Short Circuit Current Limit	43 mA maximum
Hardware Frequency Response	1/3 Hz and 20 kHz 3 dB corners
Direct Filter	2-pole high-pass, 1 Hz to 12.8 kHz
Prime Spike Filter	4-pole high-pass, 1 Hz to 12.8 kHz; 2-pole low-pass, 10 Hz to 12.8 kHz
Rotor Region Filter	2-pole high-pass, 1 Hz to 12.8 kHz; 2-pole low-pass, 10 Hz to 12.8 kHz
High Frequency Filter	4-pole high-pass, 1 Hz to 12.8 kHz
Synchronous Waveform Samples	32, 64, or 128 samples per revolution
Synchronous Frequency Span	20 to 36,000 CPM
Maximum Waveform Size	8192 samples
Asynchronous Frequency Spans	20 Hz, 50 Hz, 100 Hz, 200 Hz, 500 Hz, 1000 Hz, 2000 Hz
Asynchronous Sample Rates	51.2 Hz, 128 Hz, 256 Hz, 512 Hz, 1280 Hz, 2560 Hz, 5120 Hz, 12800 Hz, 25600 Hz
Spectral Lines	100, 200, 400, 800, 1600, 3200
Spectrum Averages	Up to 8

Eddy-Current Signal Scaling and Rotor Dynamics Processing

The 149787-01 TIM Input Card acquires dynamic machinery signals through TIM interface modules and transfers conditioned measurement data into the DSM architecture. Moreover, the module supports vibration monitoring applications that require accurate signal conversion and frequency-domain analysis.

The input architecture maintains synchronized sampling across two TIM lines. Therefore, the card can process multiple sensor channels through connected proTIM modules while preserving timing relationships required for rotor dynamics evaluation.

The card supports configurable filtering paths, including direct filtering, prime spike filtering, rotor region filtering, and high frequency filtering. These functions allow the monitoring system to separate vibration components according to measurement frequency requirements.

Frequently Asked Questions

Q: How many TIM input lines does the 149787-01 TIM Input Card support?
A: The card supports two TIM input lines, and both lines are sampled simultaneously.

Q: Does the 149787-01 support synchronous waveform acquisition?
A: Yes. The module supports software-configurable synchronous waveforms with 32, 64, or 128 samples per revolution and waveform sizes up to 8192 samples.

Q: Which TIM modules can connect to the 149787-01?
A: The card supports all proTIM modules, including 1900/15, 1900/25, and 1900/55 TIM modules.

Field Installation Guidelines

Install the 149787-01 TIM Input Card only in the designated DSM rack slot configuration defined by the Trendmaster system hardware manual.

Connect TIM cables according to the approved wiring layout and maintain proper cable routing separation from high-voltage power conductors to reduce electrical interference.

Use appropriate cable shielding and grounding practices at the system connection points. Avoid unnecessary cable loops and mechanical stress on TIM connectors during installation.

Verify TIM module compatibility before commissioning. Check input signal behavior, communication status, and waveform acquisition settings through the connected monitoring software.

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