描述
BENTLY 3500/25 125792-01是Bently Nevada公司开发的增强型键相模块，主要用于机械状态监测系统，以下是其核心特性和技术参数的综合解析：
一、模块类型与功能
结构与通道
-半高双通道模块：适用于3500机架，接收来自接近探头或磁性传感器的输入信号，转换为数字键相信号。
核心功能
-键相信号处理：检测轴上键相标记与传感器对齐时的信号，生成每转一次或多次事件脉冲，用于轴转速和振动相位测量（如1X振动幅度和相位）。
-兼容性：向下兼容旧款Keyphasor模块（PWA 125792-01），并以149369-01模块完全替代。
二、技术参数
输入信号规格
-非隔离I/O模块：输入电压范围+0.8 V至+21.0 V。
-隔离I/O模块：输入电压范围+5 V至-11 V。
-被动磁性传感器：需轴转速超过200 rpm。
输出特性
-缓冲键相信号：机架前/后侧提供同轴连接器和欧式连接器，输出阻抗≤504Ω。
-电源供应：-24 V DC，每通道最大40 mA。
环境适应性
-工作温度：-30°C至+65°C（非隔离I/O）或0°C至+65°C（隔离I/O）。
-存储温度：-40°C至+85°C，相对湿度≤95%（无凝露）。
三、配置与应用
冗余与扩展
-TMR配置：需并行安装两个模块，提供主/辅键相信号，增强系统可靠性。
-配对配置：最多支持八个键相信号输入，需占用连续插槽位置。
应用场景
-工业机械：汽轮机、压缩机、风机、齿轮箱等旋转设备的振动监测与故障诊断。
-TSI系统：配合3500系列框架实现转速、偏心、热膨胀等参数的实时监控。
四、技术优势
信号处理能力
-扩展功能：从多事件输入生成单事件信号，支持现场固件升级与资产管理数据报告。
-相位测量：隔离I/O模块引入的相移略高于非隔离版本，但可满足轴速测量需求。
灵活性
-模块组合：支持单个非配对模块（需订购双通道或混合通道）。
-传感器兼容性：通过外部电源支持Proximitor应用，扩展使用场景。
125388-01H
BENTLY 3500/25 125792-01 is an enhanced keyphasor module developed by Bently Nevada,mainly used in machinery condition monitoring systems.The following is a comprehensive analysis of its core features and technical parameters:
I.Module type and function
Structure and channel
-Half-height dual-channel module:Applicable to 3500 racks,receiving input signals from proximity probes or magnetic sensors and converting them into digital keyphasor signals.
Core function
-Keyphasor signal processing:Detects the signal when the keyphasor mark on the shaft is aligned with the sensor,and generates one or more event pulses per revolution for shaft speed and vibration phase measurement(such as 1X vibration amplitude and phase).
-Compatibility:Backward compatible with the old Keyphasor module(PWA 125792-01),and completely replaced by the 149369-01 module.
II.Technical parameters
Input signal specifications
-Non-isolated I/O module:Input voltage range+0.8 V to+21.0 V.
-Isolated I/O module:input voltage range+5 V to-11 V.
-Passive magnetic sensor:shaft speed over 200 rpm is required.
Output characteristics
-Buffered keyphase signal:coaxial connector and Euro connector are provided on the front/rear side of the rack,output impedance≤504Ω.
-Power supply:-24 V DC,maximum 40 mA per channel.
Environmental adaptability
-Operating temperature:-30°C to+65°C(non-isolated I/O)or 0°C to+65°C(isolated I/O).
-Storage temperature:-40°C to+85°C,relative humidity≤95%(non-condensing).
III.Configuration and application
Redundancy and expansion
-TMR configuration:two modules need to be installed in parallel to provide primary/secondary keyphase signals and enhance system reliability.
-Paired configuration:supports up to eight keyphase signal inputs,which need to occupy consecutive slot positions.
Application scenarios
-Industrial machinery:vibration monitoring and fault diagnosis of rotating equipment such as turbines,compressors,fans,gearboxes,etc.
-TSI system:cooperate with the 3500 series framework to realize real-time monitoring of parameters such as speed,eccentricity,thermal expansion,etc.
IV.Technical advantages
Signal processing capabilities
-Extended functions:Generate single event signals from multi-event inputs,support on-site firmware upgrades and asset management data reports.
-Phase measurement:The phase shift introduced by the isolated I/O module is slightly higher than the non-isolated version,but it can meet the shaft speed measurement requirements.
Flexibility
-Module combination:Supports single non-paired modules(need to order dual channels or mixed channels).
-Sensor compatibility:Supports Proximitor applications through external power supply to expand usage scenarios.
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