欣諭凍干機控制系統(tǒng)是通過可校正的信號傳送器，控制元件通過可校驗信號變送器直接連接到PLC 的輸入模擬器上，信號至少包括硅油入口溫度、箱體真空以及SIP 設(shè)備的排出口溫度和箱體壓力。這些4-20ma 信號同時也通過電流回路連接到記錄儀上，所有其它的模擬數(shù)據(jù)也傳送到記錄儀上，在記錄儀中模擬數(shù)據(jù)轉(zhuǎn)化為數(shù)字格式，并被傳送到PLC 用于顯示在SCADA。
Critical control instruments are connected directly to 4-20 mA PLC analogue inputs, via signal transmitters. Signal calibration may be performed at the transmitter or via software in the SCADA system. These are as a minimum: the fluid inlet temperature, chamber vacuum, and the drain temperatures and chamber pressure for steam machines. These 4-20 mA signals are also connected via a current loop to the recorder. All other analogue process data is transmitted to the recorder where it is converted into a digital format and re-transmitted to the PLC for display on the SCADA.
Control Cabinet控制柜
控制柜D立放置。所有主要的控制元件都安裝在控制柜內(nèi)。
The control cabinet is free standing. All the main control components are installed within the control cabinet.
Programmable Logic Controller (PLC) 可編程序控制器 (PLC)
控制系統(tǒng)基于OMRON PLC。
通過PLC 控制凍干機。PLC 直接控制凍干機的所有功能。根據(jù)存儲到存儲器中的工藝參數(shù)和程序，PLC 可以完成整個生產(chǎn)系統(tǒng)的操作。
存儲在PLC 存儲器中的程序可以控制所有的功能，如：半自動和全自動凍干和除霜。在凍干過程中，PLC 可比例控制板層溫度和箱體真空。
The Lyomax Compact control system is based on an Omron PLC.
Machine control is performed by the PLC. The PLC directly controls all the machine’s functions. According to process and plant data and the program downloaded to its memory, the PLC activates the outputs to properly operate the plant’s systems.
The program stored in the PLC’s memory is able to safely control all the functions such as semi-automatic and automatic freeze drying and defrosting. The PLC provides proportional control for the shelf temperature and digital control chamber vacuum during freeze-drying.
Sterile Room Control Panel無菌間控制面板
1 個鍛面拋光的不銹鋼控制面板安裝在無菌區(qū)靠近凍干機門的墻上?？刂泼姘逵糜冢?/p>
? 箱體照明
? 向凍干箱內(nèi)輸入空氣或氮氣
? 液壓壓塞系統(tǒng)操作（如安裝）
? 打開箱體排出閥
? 當(dāng)凍干機內(nèi)壓力大于大氣壓時，數(shù)字顯示壓力值
A satin finish stainless steel panel is supplied for fitting in the sterile area wall adjacent to the Lyophilizer door. Within the panel are mounted controls for:
?Activating the chamber illumination
?Admitting air/selected gas to the chamber
?Operating the hydraulic stoppering system (where fitted)
?Opening the chamber drain valve
?Digital pressure display, when the freeze dryer operates above atmospheric pressure.
