Mitsubishi MR-508XL Dokumentacja Pobierz pdf (Strona 39)

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Bimba Position Control System

Position Feedback

Cylinders

Position Feedback

Cylinder Non-Contact

Position Feedback

Cylinder Rod Lock

Position Feedback

Cylinder Accessories

Position Feedback

Pneu-Turn

Position

Control System

Digital Panel Meter Electronic Controller

PFC/PCS/PTF

Application Checklist

To command the PFC to go to a position that is 2.0 inches extended from the retracted hard stop, the command signal

would be calculated as follows:

If a 4-20 mA signal is used, the command input signal would be calculated as follows:

Note: The positional repeatability of the system will be determined by the Deadband adjustment. If the deadband was adjusted to +\- 20mV in this

example, the system would position to the 2 inch position within +\-0.015" (w = 0.1 (V) * t).

PTF Example

Let’s say we have just finished the installation procedure for a Bimba PTF Rotary actuator with 200 degrees of rotation,

and a 0-10 VDC command input signal. There is a zero rotational hard stop at 10 degrees of rotation and a full scale

rotational hard stop at 190 degrees of rotation.

Therefore:

• After adjusting the Span setting, 10 volts is equivalent to 190 degrees of rotation.

• After adjusting the Zero setting, 10 degrees of rotation will equal 0 volts.

Therefore, 0 to 10 volts covers 180 degrees (190 - 10) of motion.

To command the actuator shaft to rotate to a position that is 45 degrees rotated from the zero hard stop, the command

voltage would be calculated as follows:

If a 4-20 mA input command signal is used, the command input would be calculated as follows:

Note: The positional repeatability of the system will be determined by the Deadband adjustment. If the deadband was adjusted to +\- 20mV in this

example, the system would position to the 45 degree position within +\-0.36 degrees (w = 0.1 (V) * t).

Application

CS = 2 x 10/7.5 + 0 = 2.667 VDC Command Input Signal

CS = 2 x 16/7.5 + 4 = 8.267 mA Command Input Signal

CS = 45 x 10/180 + 0 = 2.50 VDC Input Command Signal

CS = 45 x 16/180 + 4 = 8 mA Command Input Signal

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Mitsubishi MR-508XL Dokumentacja Strona 39