Servo motor | highest pulse number, related to the maximum speed

Servo motor | highest pulse number, related to the maximum speed

To pulse control servo motors, in addition to the electronic gear ratio to take into account,
There is also maximum speed considerations.

Some can receive 200kpps, 500kpps What's the difference!?

200kpps = 200k per second, a pulse / sec

A pulse of 1um, the
1 seconds to go 200000um = 200mm
1 minute = 200mm/sx60 seconds = 12000mm/min = 12 m / min


500kpps = 500k per second, a pulse / sec

A pulse of 1um, the
1 seconds to go 500000um = 500mm
1 minute = 500mm/sx60 seconds = 30000mm/min = 30 m / min

From the above calculation that, in setting the electronic gear ratio,
Also need to take into account the maximum pulse number, as it will affect the speed.

If you do not need to um-level accuracy, the electronic gear can be relaxed,
Speed ​​can also be demanding.

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