PFEA111-20控制器,PFEA111-20使用過(guò)程
HSS模塊提供對(duì)節(jié)氣門位置的控制渦輪機(jī)速度控制系統(tǒng)。MFP模塊將數(shù)據(jù)發(fā)送到HSS模塊，用于指導(dǎo)液壓執(zhí)行器的控制（通過(guò)伺服閥或I/H轉(zhuǎn)換器）。通過(guò)發(fā)送位置根據(jù)HSS模塊的要求，MFP模塊啟動(dòng)更改渦輪轉(zhuǎn)速。位置需求通過(guò)輸入/輸出傳遞擴(kuò)展器總線至HSS模塊。車載微處理器
讀取需求并將其加載到數(shù)模轉(zhuǎn)換（D/a）中轉(zhuǎn)換器。產(chǎn)生的模擬值驅(qū)動(dòng)伺服閥。
PFEA111-20控制器伺服閥將液壓油加載到雙離合器的一側(cè)動(dòng)作液壓執(zhí)行器。當(dāng)液壓執(zhí)行器打開(kāi)或關(guān)閉節(jié)流閥，渦輪轉(zhuǎn)速改變。如果液壓執(zhí)行器由I/H轉(zhuǎn)換器驅(qū)動(dòng)，然后HSS模塊將MFP模塊發(fā)送的信號(hào)縮放到4至20毫安信號(hào)或20至160毫安信號(hào)和繞過(guò)PID控制器電路。這是4到20毫安信號(hào)線性驅(qū)動(dòng)I/H轉(zhuǎn)換器加載液壓油至雙作用執(zhí)行器的一側(cè)。
MFP模塊在其配置中需要功能代碼55或150，以指導(dǎo)IMHSS03模塊的操作。功能代碼55定義了模塊地址、操作模式（校準(zhǔn)或正常）、校準(zhǔn)周期時(shí)間并存儲(chǔ)校準(zhǔn)數(shù)據(jù)。十個(gè)輸出塊包括執(zhí)行器位置，數(shù)模轉(zhuǎn)換器輸出、伺服閥線圈輸出電流以及模塊和過(guò)程的狀態(tài)輸出設(shè)備
The HSS module provides control of throttle valve position in a
turbine speed control system. The MFP module sends data to
the HSS module, which directs the control of a hydraulic actu
ator (via a servo valve or I/H converter). By sending a position
demand to the HSS module, the MFP module initiates a change
in turbine speed. The position demand travels over the I/O
expander bus to the HSS module. An on-board microprocessor
reads the demand and loads it into a digital-to-analog (D/A)
converter. The resulting analog value drives the servo valve.
The servo valve loads hydraulic fluid to one side of a double
acting hydraulic actuator. As the hydraulic actuator opens or
closes the throttle valve, the turbine speed changes. If the
hydraulic actuator is being driven by an I/H converter, then
the HSS module scales the signal sent by the MFP module to a
four to 20 milliamp signal or 20 to 160 milliamp signal and the
PID controller circuitry is bypassed. This four to 20 milliamp
signal linearly drives the I/H converter to load hydraulic fluid
to one side of the double acting actuator.
The MFP module requires function code 55 or 150 in its config
uration to direct the operation of the IMHSS03 module. Func
tion code 55 defines the module address, mode of operation
(calibration or normal), calibration cycle time and stores cali
bration data. The ten output blocks include actuator position,
digital-to-analog converter output, servo valve coil output cur
rent, and status outputs for the module and process
equipment.
