VMIVME-017807-414001燃機(jī)模塊
當(dāng)輸入A為高（1）時(shí)，控制器將在正常自動(dòng)模式，當(dāng)?shù)停?）時(shí)，使復(fù)位R跟蹤
（F-GE）。這將強(qiáng)制控制器輸出跟蹤控制器限制內(nèi)的反饋，并允許控制器在不影響輸出的情況下切換回自動(dòng)。過(guò)程范圍指針參數(shù)（輸入R）指向具有范圍縮放的功能塊，如模擬提供過(guò)程變量的輸入。這使得控制器，用于規(guī)范化工藝范圍。如果未配置此參數(shù)，則控制器將使用0.00-100.00的范圍縮放。
輸入I，當(dāng)從低（0）變?yōu)楦撸?）或從從高到低將導(dǎo)致控制器初始化（即。在該掃描期間消除任何比例增益動(dòng)作周期這可用于防止碰撞輸出使用開(kāi)關(guān)更改設(shè)定點(diǎn)時(shí)塊通電-在暖機(jī)或冷機(jī)通電期間，輸出將初始化為最小刻度和所有動(dòng)態(tài)元素將在第一次掃描時(shí)在當(dāng)前輸入處初始化。輸入AG乘以增益誤差（GE）。在控制器固件版本1.30中，未連接的AG輸入將設(shè)置為1.0。在早期版本中，它設(shè)置為0.0，這要求輸入始終連接到源（例如保持塊），以便PIDAG塊起作用?？刂破鬏敵鼍哂蠱INSCALE和MAXSCALE參數(shù)，允許對(duì)輸出信號(hào)進(jìn)行縮放工程范圍，而不是默認(rèn)值0-100 PRCT。當(dāng)控制器輸出為設(shè)置點(diǎn)到另一個(gè)控制器。
當(dāng)自動(dòng)調(diào)諧設(shè)置為“是”時(shí)，可使用調(diào)諧按鈕訪問(wèn)自動(dòng)調(diào)諧功能
并且可以：在回路處于自動(dòng)或手動(dòng)狀態(tài)時(shí)啟動(dòng)。自動(dòng)調(diào)諧器啟動(dòng)后，將用開(kāi)關(guān)代替PIDAG控制功能，將A/M模塊置于Auto（如果處于Man），并通過(guò)六個(gè)開(kāi)-關(guān)周期循環(huán)控制回路同時(shí)學(xué)習(xí)其用于為PIDAG控制器提供調(diào)諧建議的過(guò)程動(dòng)力學(xué)。%DEV參數(shù)是在開(kāi)關(guān)周期。該參數(shù)可以手動(dòng)設(shè)置，也可以配置為自動(dòng)。配置“自動(dòng)”時(shí)自動(dòng)調(diào)諧將%DEV設(shè)置為%HYS的4倍。這是提供良好自動(dòng)調(diào)諧所需的最小值后果%HYS參數(shù)是在中切換輸出之前過(guò)程必須偏離設(shè)定值的量相反的方向。該值必須至少等于或略大于任何工藝噪聲帶。如果噪音無(wú)法確定頻帶，當(dāng)%HYS參數(shù)已配置為自動(dòng)。%階躍參數(shù)是閥門在第一個(gè)開(kāi)-關(guān)循環(huán)中的變化量。在第一個(gè)循環(huán)之后autotuner將調(diào)整步長(zhǎng)，以將進(jìn)程保持在%DEV參數(shù)的值內(nèi)。隨后自動(dòng)調(diào)諧練習(xí)，該步驟將使用從上一練習(xí)計(jì)算的值，除非AT RESET參數(shù)設(shè)置為“是”或控制器已通電。自動(dòng)調(diào)諧建議的動(dòng)態(tài)響應(yīng)可以是：配置為快速、中等或慢速。介質(zhì)設(shè)置通常會(huì)提供一個(gè)沒(méi)有或很少的響應(yīng)超調(diào)至設(shè)定點(diǎn)階躍響應(yīng)。當(dāng)POST AT參數(shù)設(shè)置為YES時(shí)，控制回路將使用推薦的調(diào)整值，除非測(cè)試期間出現(xiàn)警告。有關(guān)自動(dòng)調(diào)諧的更多詳細(xì)信息，請(qǐng)參見(jiàn)操作部分。
When input A is high (1) the controller will operate in the
normal auto mode and when low (0) causes reset R to track
(F-GE). This forces the controller output to track the
feedback within controller limits and allow the controller
to be switched back to auto without bumping the output.
The process range pointer parameter (input R) points to a
function block that has range scaling, such as the analog
input that is providing the process variable. This enables
the controller to normalize the tuning parameters for the
process range. If this parameter is not configured, the
controller will use a range scaling of 0.00-100.00.
Input I, when changed from low (0) to high (1) or from
high to low, will cause the controller to initialize (i.e.
eliminate any proportional gain action during that scan
cycle. This can be used to prevent bumping the output
when changes are made to the setpoint using a switch
block. POWER UP - During a warm or cold power up, the output will be initialized to MINSCALE and all dynamic
elements will be initialized at the current input on the first scan.
Input AG is multiplied by the gain error (GE). In version 1.30 of the controller firmware, an unconnected AG input
will be set to 1.0. In earlier versions, it was set to 0.0 which required that the input always be connected to a source
(e.g. Hold block) in order for the PIDAG block to function.
The controller output has MINSCALE and MAXSCALE parameters allowing the output signal to be scaled for
engineering ranges other than the default of 0 - 100 PRCT. This may be necessary when the controller output is the
setpoint to another controller.
The Autotune feature is accessible using the TUNE pushbutton when AUTOTUNE is set to YES and can be
initiated while the loop is in Auto or Manual. The autotuner, when initiated, replaces the PIDAG with an on-off
control function, places the A/M block in Auto (if in Man) and cycles the control loop through six on-off cycles
while learning the process dynamics which it uses to provide tuning recommendations for the PIDAG controller.
The % DEV parameter is the maximum amount in % that the process should deviate from the setpoint during the
on-off cycles. This parameter can be set manually or can be configured as AUTO. When AUTO is configured, the
autotuner will set the % DEV to 4 times the % HYS. This is the minimum value needed to provide good autotuning
results.
The % HYS parameter is the amount that the process must deviate from setpoint before switching the output in the
opposite direction. This value must be at least equal to or slightly greater than any process noise band. If the noise
band cannot be determined, the autotuner will compute it at the start of an autotuning exercise when the % HYS
parameter has been configured as AUTO. The % STEP parameter is the amount that the valve will change on the first on-off cycle. After the first cycle, the
autotuner will adjust the step to keep the process within the value of the % DEV parameter. On subsequent
autotune exercises, the step will use the value computed from the previous exercise unless the AT RESET parameter
is set to YES or the controller has been power cycled. The dynamic response recommended by the autotuner can be
configured as Fast, Medium, or Slow. The Medium setting will normally provide a response that has no or little
overshoot to a setpoint step response.
When the POST AT parameter is set to YES, the control loop will be returned to Auto using the recommended
tuning values unless a warning occurred during the test.
More details on autotuning can be found in the Operation section.
