Mitsubishi MR-508XL Specifikace stáhnout pdf (Strana 38)

7.38

Bimba Position Control System

Application

Example

The following section will review two examples, one example shows a PFC application, and the second example shows

a PTF rotary example.

PFC Example

Let’s say we have just finished the installation procedure for a Bimba PFC Cylinder with 10 inches of stroke, and are

using a 0-10 VDC input command signal. There is a retracted hard stop at 1.5 inches of cylinder stroke and an extended

hard stop at the 9.0 inches of cylinder stroke.

Therefore:

• After adjusting the Span setting, 10 volts is equivalent to 9.0 inches of cylinder rod extension.

• After adjusting the Zero setting, 1.5 inches of cylinder rod extension will equal 0 volts.

Therefore, 0 to 10 volts covers the 7.5 inch (9.0" - 1.5") range of motion.

Using the following formula:

The command signal can be translated into actuator displacement with the following formula:

CS = d * R / t + Z

where:

CS = the command signal required to achieve a desired position

d = the displacement the desired position is from the zero position

R = the full range of the command signal

t = full scale travel of the actuator (Note: for PTF rotary actuators with total rotation less than 180°

always make t = 180)

Z = the command signal for the zero position

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 52 53

Žádné komentáře

Mitsubishi MR-508XL Specifikace Strana 38