FBM201e輸入卡件
當輸入A等于或超過HI或LO限制設置時，批量開關的輸出將降低（高從而改變反饋信號并因此改變控制器復位信號。這將控制器輸出保持在批量開關極限設置，并消除復位飽和。
如果控制器具有較大的比例增益設置，則重置可能會被修改過多，使得過程可能在啟動條件下低于設定值。調整BPL（批量預加載）以優化控制器通過限制批量開關可以調節控制器反饋信號的量來確定啟動條件。
當控制器輸出在其正常工作輸出范圍內時，批量開關對控制器沒有影響。
這使得控制器可以針對正常操作條件進行最佳調整，并且批量開關可以添加：額外補償，非常類似于導數作用，僅在啟動期間3.2.24偏差-偏差偏置功能塊可以在每個循環一個的基礎上使用并提供偏置信號的方法，例如外部設置應用程序。輸入A和E（外部偏置）求和，然后添加到操作員可調偏差
B航跡命令輸入TC被斷言為高（1），將導致塊輸出跟蹤輸入TV，并重新計算偏差
如B＝TV-（A+E）。B的值將被箝位在高限和低限設置。重要的是要認識到輸入和輸出以工程單位和限制為單位必須以預期的最小值進行相應調整以及最大所需范圍值。默認值已設置為-150.00和+150.00，這可能是
使用默認范圍0.0時的正常預期限制設置為100.0。這些值可以設置得更低，但具有最大設置為量程指針值的+/-150%。
如果指針不在，則默認范圍為0.00到100.00配置。
例如，如果使用偏置塊以0-6.00 GPM的范圍指針（輸入R）偏置流量設定點，則
最大偏差調整應為+/-9.00。如果需要該范圍+/-50%的極限調整，則偏置塊LO限值應設置為-3.00，HI限值設置為+3.00。如果范圍發生變化，則電流限制設置和當前偏置值將在新范圍內更改為相同的%值。
如果參數“快速設置”設置為“是”，則可以使用快速設置功能調整偏差。偏見調節旋鈕時，數值將持續變化，但當最終數值時，必須按下存儲按鈕以確保在冷加電條件下保持新的偏置設置。塊的任何未使用輸入將設置為等于0。
As input A equals or exceeds the HI or LO LIMIT setting,
the output of the batch switch will be either decreased (HI
LIMIT) or increased (LO LIMIT), changing the feedback signal and therefore the controller reset signal. This
maintains controller output at the batch switch limit setting and eliminates reset windup.
If a controller has a large proportional gain setting, the reset can be modified too much, such that the process may
under shoot the setpoint during a startup condition. The BPL (Batch Pre-Load) is adjusted to optimize the controller
for startup conditions by limiting how much the batch switch can adjust the controller feedback signal.
When the controller output is within its normal operating output, the batch switch has no effect on the controller.
This allows the controller to be tuned optimally for normal operating conditions and the batch switch to add
additional compensation, very similar to derivative action, only during startup3.2.24 BIAS - Bias
BIAS function blocks can be used on a one per loop basis
and provide a means to bias a signal, such as the setpoint in
an external set application. Inputs A and E (external bias)
are summed and then added to the operator adjustable bias
B.
Track Command input TC, asserted high (1), will cause the
block output to track input TV and BIAS to be recalculated
as B = TV - (A+E). The value of B will be clamped at the
HI and LO LIMIT settings. It is important to realize that the
inputs and outputs are in engineering units and the limits
must be adjusted accordingly with the expected minimum
and maximum required range values. The default values
have been set to -150.00 and +150.00, which might be the
normal expected limits when using the default range of 0.0
to 100.0. These values can be set lower but have a
maximum setting of +/-150% of the range pointer value.
The default range is 0.00 to 100.00 if the pointer is not
configured.
If, for example, the BIAS block is used to bias a flow setpoint with a range pointer (input R) of 0-6.00 GPM, the
maximum bias adjustments would be +/-9.00. If limit adjustments of +/-50% of this range are desired, then the
BIAS block LO LIMIT should be set at -3.00 and the HI LIMIT at +3.00. If a range change is made the current
LIMIT settings and the current BIAS value will be changed to be the same % value within the new range.
The BIAS can be adjusted using the QUICKSET feature if the parameter QUICKSET is set to YES. The BIAS
value will continuously change as the knob is adjusted but the STORE button must be pressed when the final value
is reached to insure that the new BIAS setting will be retained on a Cold power up condition.
Any unused inputs to the block will be set equal to 0.
