描述
一、产品概述
BENTLY 3500/25 125792-01是Bently Nevada开发的增强型键相模块，专为工业旋转机械的振动监测与机械保护系统设计。该模块通过磁性传感器或接近探头检测轴的键相信号，将其转换为数字信号，用于测量轴转速、振动幅度及相位等关键参数。其核心功能包括信号处理增强、冗余配置支持及多通道扩展，适用于汽轮机、压缩机、电机等大中型旋转设备的监测。
二、核心参数与性能
硬件规格
模块类型：半高双通道模块，兼容3500机架系统。
处理器：32位RISC架构，支持高速信号处理。
功耗：典型功耗3.2 W。
尺寸与重量：170mm×105mm×32mm，约120g。
输入输出特性
输入信号：
磁性/接近探头信号：每通道支持两个传感器输入。
电压范围：
非隔离模块：+0.8 V至21.0 V；
隔离模块：+5 V至-11 V。
输出信号：
缓冲键相输出：提供两个同轴连接器（机架前部）及欧式连接（机架后部）。
输出阻抗：最大504Ω。
电源：-24 V DC，每通道最大电流40 mA。
信号处理能力
键相信号处理：支持每转一次或多次脉冲的键相信号，用于精确定时测量。
相位测量：通过数字信号转换，可获取1X振动幅度及相位数据。
冗余设计：
TMR（三重模块冗余）：需配置两个模块并行运行，提供主/备信号。
配对配置：最多支持8路键相信号输入（常规配置4路）。
环境适应性
工作温度：
非隔离模块：-30°C至+65°C；
隔离模块：0°C至+65°C。
存储温度：-40°C至+85°C。
湿度：95%相对湿度（无凝露）。
三、功能特性
信号兼容性
支持磁性拾音器、接近探头及Proximitor应用（需外部电源）。
兼容灰色代码或二进制SSI传感器，支持单网络连接最多12个传感器。
扩展与配置
机架安装：
主模块需半高前插槽，全高后插槽用于输入/输出模块。
最多两个主模块可共存于同一机架（顶部/底部半插槽）。
隔离功能：隔离I/O模块可与其他系统（如控制系统）电气隔离，但相移略高于非隔离版本。
诊断与报警
监测输入信号状态，触发预设条件报警。
支持现场固件升级及资产管理数据报告。
3500/25-01-01-00 125800-01
3500/25-01-01-00 125800-01
.1.Product Overview
BENTLY 3500/25 125792-01 is an enhanced key phase module developed by Bently Nevada,designed for vibration monitoring and mechanical protection systems for industrial rotary machinery.The module detects the key phase signal of the shaft through a magnetic sensor or proximity probe,converts it into a digital signal,and uses it to measure key parameters such as shaft speed,vibration amplitude and phase.Its core functions include signal processing enhancement,redundant configuration support and multi-channel expansion,which are suitable for monitoring large and medium-sized rotating equipment such as steam turbines,compressors,and motors.
2.Core parameters and performance
Hardware specifications
Module type:Half-height dual-channel module,compatible with 3500 rack system.
Processor:32-bit RISC architecture,supports high-speed signal processing.
Power consumption:Typical power consumption 3.2 W.
Size and weight:170mm×105mm×32mm,about 120g.
Input and output characteristics
Input signal:
Magnetic/proximity probe signal:Supports two sensor inputs per channel.
Voltage range:
Non-isolated module:+0.8 V to 21.0 V;
Isolation module:+5 V to-11 V.
Output signal:
Buffer key phase output:Provides two coaxial connectors(front of the rack)and European-style connections(back of the rack).
Output impedance:Maximum 504Ω.
Power supply:-24 V DC,maximum current per channel is 40 mA.
Signal processing capability
Key phase signal processing:Supports key phase signals that pulse once or more times per revolution,for precise time measurement.
Phase measurement:Through digital signal conversion,1X vibration amplitude and phase data can be obtained.
Redundant design:
TMR(Triple Module Redundancy):Two modules need to be configured to run in parallel to provide main/support signals.
Pairing configuration:Supports up to 8-channel key phase signal input(4-channel conventional configuration).
Environmental adaptability
Operating temperature:
Non-isolation module:-30°C to+65°C;
Isolation module:0°C to+65°C.
Storage temperature:-40°C to+85°C.
Humidity:95%Relative humidity(no condensation).
3.Functional characteristics
Signal compatibility
Supports magnetic pickup,proximity probe and Proximitor applications(external power supply required).
Compatible with grey code or binary SSI sensors,supports up to 12 sensors with a single network connection.
Extensions and configuration
Rack mounting:
The main module requires a half-height front slot and a full-height rear slot for the input/output module.
Up to two main modules can coexist in the same rack(top/bottom half-slot).
Isolation function:The isolation I/O module can be electrically isolated from other systems(such as control systems),but has a slightly higher phase shift than the non-isolated version.
Diagnosis and alarm
Monitor the status of the input signal and trigger the preset condition alarm.
Supports on-site firmware upgrades and asset management data reporting.
