40PB3205A 备件PLC模块用于控制主电压的输入 ABB
在大多数情况下，水平安装为明显
简单的解决方案。因此，称重传感器应：
尽可能水平安装。
但是，如果机器设计需要倾斜
称重传感器的安装或腹板路径是否不应给出
足够的垂直力，见图，倾斜
允许安装，并且计算有些不同
更复杂（见第F.5.2节）。
称重传感器测量施加在其顶部的垂直力
表面未测量水平施加的力
并且不影响垂直测量。有
垂直力的两个来源；来自网络的力量
张力和辊的皮重。
将总垂直力FRtot除以2，得到
每个称重传感器所需的容量。
不要为了过载而加大ABB称重传感器的尺寸
因为称重传感器具有足够的过载能力。
称重传感器可以测量张力和压缩。
如果T（sin + 罪) 大于皮重
称重传感器将处于张力状态。
要获得每个称重传感器的容量：
1.将（FR-皮重）除以2
如果FR大于或等于（皮重×2）。
2.皮重除以2
如果FR小于（皮重×2）。
杂草
T
T
无垂直腹板张力
应用于称重传感器。
PFCL 201
杂草
FR
T（张力）缠绕增益FR=
张力电子PFEA113，用户手册
第F.5.2节倾斜安装
3BSE029382R0101版本C F-5
F、 5.2倾斜安装
有时需要将称重传感器安装在
由于机械设计限制而倾斜
机器或需要适当的分力
应用于称重传感器。
在这种情况下，倾斜角度会修改皮重载荷，并且
力分量如图所示。
张力电子PFEA113，用户手册
附录F PFCL 201-称重传感器安装设计
F-6 3BSE029382R0101 C版
F、 6.单测力传感器测量的力计算
在某些情况下，仅在一个传感器上安装一个称重传感器即可测量张力
卷的末尾。
F、 6.1常见和简单的解决方案
明显和简单的解决方案是水平安装，腹板均匀分布
并以辊为中心。
只要辊子两端支撑，第F.5节中给出的计算结果相同
有效的
注
单个称重传感器测量的精度在很大程度上取决于：
可以确定力的中心。由于横向应力
分布通常有些不均匀，这不容易做到。称重传感器
然而，将产生稳定和可重复的测量。
图F-2.横向应力分布
张力电子PFEA113，用户手册
第F.6.2节：腹板未位于辊中心时的力计算
3BSE029382R0101版本C F-7
F、 6.2腹板不在辊中心时的力计算
当腹板未居中时，使用以下计算进行水平和倾斜安装
在滚动。
称重传感器上施加的力将与张力之间的距离成比例
中心和称重传感器中心线
40PB3205A 备件PLC模块用于控制主电压的输入 ABB
40PB3205A 备件PLC模块用于控制主电压的输入 ABB
most cases, horizontal mounting is the most obvious
and simplest solution. The load cell should thus be
mounted horizontally when possible.
However, should the machine design require inclined
mounting of the load cell or should the web path not give
a sufficient vertical force, see figure, the inclined
mounting is permitted and the calculations are somewhat
more complex, (see Section F.5.2).
The load cell measures the vertical forces applied to its top
surface. The horizontal applied forces are not measured
and do not influence the vertical measurement. There are
two sources of vertical forces; the forces from the web
tension and the tare weight of the roll.
Divide the total vertical force FRtot by two to get the
required capacity of each load cell.
Do not oversize an ABB load cell for overload purposes
as the load cell has sufficient overload capacity.
The load cell can measure tension as well as compression.
If the T (sin + sin ) is larger than the tare weight, the
load cell will be in tension.
To get the capacity of each load cell:
1. Divide (FR - Tare) by two
if FR is greater than or equal to (Tare × two).
2. Divide Tare by two
if FR is smaller than (Tare × two).
Tare
T
T
No vertical web tension force
applied to the load cell.
PFCL 201
Tare
FR
T (Tension) Wrap gain FR =
Tension Electronics PFEA113, User Manual
Section F.5.2 Inclined Mounting
3BSE029382R0101 Rev C F-5
F.5.2 Inclined Mounting
Sometimes it is necessary to mount the load cell on an
incline due to mechanical design constraints of the
machine or the need to have a proper force component
applied to the load cell.
In this case, the incline angle modifies the tare load and
the force components as shown.
Tension Electronics PFEA113, User Manual
Appendix F PFCL 201 - Designing the Load Cell Installation
F-6 3BSE029382R0101 Rev C
F.6 Force Calculation for Measurement with a Single Load Cell
In some cases, it is sufficient to measure the tension with only a single load cell mounted at one
end of the roll.
F.6.1 The Most Common and Simple Solution
The most obvious and simple solution is horizontal mounting with the web evenly distributed
and centered on the roll.
As long as the roll is supported at both ends, the same calculations given in Section F.5 are
valid.
NOTE
The accuracy of a single load cell measurement is highly dependent on how well
the center of force can be determined. Since the cross-directional stress
distribution generally is somewhat uneven, this is not easily done. The load cell
will, however, produce a stable and repeatable measurement.
Figure F-2. Cross-directional stress distribution
Tension Electronics PFEA113, User Manual
Section F.6.2 Force Calculation when the Web is not Centered on the Roll
3BSE029382R0101 Rev C F-7
F.6.2 Force Calculation when the Web is not Centered on the Roll
Use the calculations below for horizontal and inclined mounting when the web is not centered
on the roll.
The applied force at the load cell will be proportional to the distance between the tension force
center and the load cell centerline
40PB3205A 备件PLC模块用于控制主电压的输入 ABB
