Vibro-meter VM600 RPS6U动态信号输入完全可编程
MPC4机械保护卡是
VM600系列机械的核心部件
保护系统（MPS），来自美捷特
Vibro Meter®产品线。这张用途广泛的卡片
能够测量和监控
四个动态信号输入，最高两个速度
同时输入。
动态信号输入完全可编程
并且可以接受表示
加速度、速度和位移
（接近）等等。车载多通道处理允许测量
各种物理参数，包括相对
以及绝对振动、Smax、偏心率、推力
位置、绝对和差速器壳体
膨胀、位移和动压。
数字处理包括数字滤波，
整合或差异化（如果需要），
整流（RMS、平均值、真峰值或真
峰值到峰值）、顺序跟踪（幅度和
相位）和传感器目标的测量
缺口
速度（转速表）输入接受信号
来自各种速度传感器，包括系统
基于接近探针、磁脉冲拾取传感器或TTL信号。分数转速表
比率也得到支持。
配置可以用公制或
帝国单位。警报和危险设置点已满
可编程的以及报警时间延迟，
迟滞和锁存。警报与危险
水平也可以根据
速度或任何外部信息。
内部提供数字输出（在
对应的IOC4T输入/输出卡）
警报级别。这些报警信号可以驱动四个
IOC4T卡上的本地继电器和/或可以
使用VM600机架的Raw总线或Open进行路由
用于驱动可选继电器的收集器（OC）总线
诸如RLC16或IRC4之类的中继卡。
处理后的动态（振动）信号和
机架后部有速度信号
（在IOC4T的前面板上）作为模拟
输出信号。基于电压（0至10 V）和
提供了基于电流的（4至20mA）信号。
The MPC4 machinery protection card is the
central element in the VM600 series machinery
protection system (MPS), from Meggitt’s
Vibro-Meter® product line. This very versatile card
is capable of measuring and monitoring up to
four dynamic signal inputs and up to two speed
inputs simultaneously.
The dynamic signal inputs are fully programmable
and can accept signals representing
acceleration, velocity and displacement
(proximity), among others. On-board multichannel processing allows measurement of
various physical parameters, including relative
and absolute vibration, Smax, eccentricity, thrust
position, absolute and differential housing
expansion, displacement and dynamic pressure.
Digital processing includes digital filtering,
integration or differentiation (if required),
rectification (RMS, mean value, true peak or true
peak-to-peak), order tracking (amplitude and
phase) and measurement of the sensor-target
gap.
The speed (tachometer) inputs accept signals
from a variety of speed sensors, including systems
based on proximity probes, magnetic pulse pickup sensors or TTL signals. Fractional tachometer
ratios are also supported.
The configuration can be expressed in metric or
imperial units. Alert and Danger set points are fully
programmable, as are alarm time delay,
hysteresis and latching. The Alert and Danger
levels can also be adapted as a function of the
speed or any external information.
A digital output is available internally (on the
corresponding IOC4T input/output card) for each
alarm level. These alarm signals can drive four
local relays on the IOC4T card and/or can be
routed using the VM600 rack’s Raw bus or Open
Collector (OC) bus to drive relays on optional
relay cards such as the RLC16 or IRC4.
The processed dynamic (vibration) signals and
speed signals are available at the rear of the rack
(on the front panel of the IOC4T) as analog
output signals. Voltage-based (0 to 10 V) and
current-based (4 to 20 mA) signals are provided.
