Product No.: 1701/25 161141-01 - General Introduction
This product is a multi-channel sensor interface or signal processing module, typically part of a modular condition monitoring or industrial control system. The 1701/25 designation indicates it belongs to a specific product family (likely the "1701" series) and serves as a "Channel 25" type module, which often implies a specialized function such as a tachometer/speed input module or a multi-purpose analog input module. The 161141-01 suffix is its specific hardware assembly part number.
This module is designed to condition, isolate, and digitize signals from various primary sensors (like magnetic pickups, proximity probes, or accelerometers) and provide standardized outputs (e.g., 4-20mA, relay contacts, digital data) to a main monitoring rack or controller. It acts as the critical interface between field sensors and the higher-level monitoring system.
Detailed Parameters
| Parameter Category | Specification | Details / Notes |
|---|---|---|
| Module Type | 1701/25 - Dedicated Interface Module (e.g., Tachometer / Multi-channel Input) | Installs into a compatible 1701 series rack or chassis. Likely a single-slot or double-slot module. |
| Physical Dimensions (Module) | Height: ~ 200-250 mm (Rack Unit dependent) Width: ~ 20-40 mm (1-2 slots) Depth: ~ 150-180 mm | Dimensions are typical for modular I/O or monitoring cards. Exact size depends on the 1701 rack specification. |
| Module Weight | Approx. 300 - 600 grams | Weight includes PCB, connectors, and metal housing. |
| Input Channels | Likely 2 or 4 isolated channels. | Could accept: • Speed: from Magnetic Pickups (MPUs) or Proximity Probes. • Vibration: from ICP® or voltage-mode accelerometers. • General Analog: 4-20mA or 0-10V process signals. |
| Input Specifications | Configurable per channel via software or jumpers. • MPU Input: Accepts AC voltage signals, frequency range 1 Hz - 20 kHz. • Analog Input: 16-bit resolution, programmable scaling. | High flexibility to interface with different sensor types. |
| Power Supply | Powered by the backplane of the 1701 rack (e.g., +24 VDC). | May also provide sensor excitation power (e.g., +24 VDC loop power for 4-20mA, or +18 VDC for ICP® sensors). |
| Primary Outputs | • Scaled 4-20 mA analog outputs (per channel) • Programmable Alarm Relay Outputs (Form C, SPDT) • Digital communication to rack controller (e.g., via backplane bus) | Relays are typically for Alert and Danger setpoints based on input signal. |
| Key Processing Features | • Signal Filtering (high-pass, low-pass) • Peak/ RMS calculation • Gap Voltage monitoring (if used with prox probes) • Zero-speed detection | Essential for converting raw sensor signals into usable machinery health data. |
| Front Panel Indicators | Per-channel LED indicators (Power, Signal OK, Alarm). | For quick local status and diagnostics. |
| Configuration | Via dedicated software connected to the rack controller, or via DIP switches/potentiometers on the module. | |
| Operating Temperature | -20°C to +70°C (Industrial Grade) | |
| Connectors | Removable screw-terminal blocks or high-density D-sub connectors on the front or top edge. | For reliable field wiring connections. |
| Key Feature | Versatile, multi-sensor interface with built-in signal conditioning and alarm generation. | Reduces need for external signal conditioners and simplifies system integration. |
Primary Application Scenarios
This module is used as a flexible building block for custom machinery monitoring and protection systems.
Multi-Point Speed Monitoring on Complex Machinery:
Turbine & Compressor Trains: Used as a dedicated tachometer module to accept signals from multiple magnetic pickups (MPUs) on different shafts (e.g., HP shaft, LP shaft, gearbox) within a single machine train, providing synchronized speed data for all points.
Auxiliary Equipment Vibration Monitoring:
Pump, Fan, and Motor Vibration: Conditions signals from accelerometers mounted on motors, pumps, or fans that are not covered by the main turbine protection system but still require monitoring for predictive maintenance.
Process Signal Integration into Machinery Health Systems:
Bearing Temperature & Pressure: Accepts 4-20mA signals from temperature RTDs or pressure transmitters on lube oil systems, integrating this process data with vibration and speed data for a comprehensive machine view.
Custom Test Stands & Prototype Monitoring:
Research & Development: Provides a configurable, multi-channel data acquisition front-end for testing new machinery prototypes or for temporary monitoring campaigns on existing equipment.
Retrofit and System Expansion:
Adding Monitoring Points: Used to expand an existing 1701-based monitoring system by adding new sensor channels (e.g., adding casing vibration points or a new speed input) without replacing the entire rack.
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