FBM201e输入卡件
当输入A等于或超过HI或LO限制设置时，批量开关的输出将降低（高从而改变反馈信号并因此改变控制器复位信号。这将控制器输出保持在批量开关极限设置，并消除复位饱和。
如果控制器具有较大的比例增益设置，则重置可能会被修改过多，使得过程可能在启动条件下低于设定值。调整BPL（批量预加载）以优化控制器通过限制批量开关可以调节控制器反馈信号的量来确定启动条件。
当控制器输出在其正常工作输出范围内时，批量开关对控制器没有影响。
这使得控制器可以针对正常操作条件进行最佳调整，并且批量开关可以添加：额外补偿，非常类似于导数作用，仅在启动期间3.2.24偏差-偏差偏置功能块可以在每个循环一个的基础上使用并提供偏置信号的方法，例如外部设置应用程序。输入A和E（外部偏置）求和，然后添加到操作员可调偏差
B航迹命令输入TC被断言为高（1），将导致块输出跟踪输入TV，并重新计算偏差
如B＝TV-（A+E）。B的值将被箝位在高限和低限设置。重要的是要认识到输入和输出以工程单位和限制为单位必须以预期的最小值进行相应调整以及最大所需范围值。默认值已设置为-150.00和+150.00，这可能是
使用默认范围0.0时的正常预期限制设置为100.0。这些值可以设置得更低，但具有最大设置为量程指针值的+/-150%。
如果指针不在，则默认范围为0.00到100.00配置。
例如，如果使用偏置块以0-6.00 GPM的范围指针（输入R）偏置流量设定点，则
最大偏差调整应为+/-9.00。如果需要该范围+/-50%的极限调整，则偏置块LO限值应设置为-3.00，HI限值设置为+3.00。如果范围发生变化，则电流限制设置和当前偏置值将在新范围内更改为相同的%值。
如果参数“快速设置”设置为“是”，则可以使用快速设置功能调整偏差。偏见调节旋钮时，数值将持续变化，但当最终数值时，必须按下存储按钮以确保在冷加电条件下保持新的偏置设置。块的任何未使用输入将设置为等于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.
