PLC | contact input selection? A Contact (NO), B (NC)

PLC | contact input selection? A Contact (NO), B (NC)

A contact (NO), B contacts (NC), the use of that too!?

Generally not often encountered in the switch, but important, such as emergency EMS, the limit to protect the switch.
Will use the B contact.

So the signal remains live. If the line cut off, will know immediately.
Also coupled with a line check function.

Other detector signal, the A contact can be used.

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Some special cases:
Such as the minimum level detector,
Because the level is usually more than the lower limit position, it will always know to check.
If we use B contact, but no signal has been lost protection.
So the use of contact A, so that in the normal level, the lower limit, or has been output.

Servo motor | HOME point blank length calculation

Servo motor | HOME point blank length calculation
HOME point blank length calculation
(Positive and negative limit is the same)

Conditions:
1.10 mm / turn
2 The most high-speed = 3000 r / min
3. Deceleration = 100ms

Calculation:

10 (mm / r) x 3000 (r / min) = 30000 (mm / min)
30000 (mm / min) / 60 s = 500 (mm / s)
500 (mm / s) / 1000 = 0.5 (mm / ms)

Minimum length of the blank = 0.5 (mm / ms) x 100 ms / 2 = 50 mm

折床機其實也只是2軸的CNC/Brake machine is actually only 2-axis CNC

折床機其實也只是2軸的CNC

Brake machine is actually only 2-axis CNC

一軸送料，另一個軸控制下壓量

One axis feeding,Another axis Control the volume under pressure

重點在於加工件的材料、厚度，會有不同的彈性系數。

Focused on the processed material, thickness，

have different elasticity.

好的折床機控制器可以把加工件的材料、厚度考慮進去，並加以補正。

Good Brake Controller can calculate processed material, thickness into account, and make corrections.

原理簡單，但要收集所有的資料，卻是不容易的事。

Simple in principle, but to collect all the information, but it is not an easy task.