BX2 series speed limit setting*

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BX2 series speed limit setting*

Postby om_tech_support_JT » Thu Jul 30, 2015 10:34 am

Q: Considering using BXII series for a variable speed application. What analog signal range is acceptable? I need to limit my max speed to 2000 RPM using 0-10VDC signal, what parameter settings do I need to change?

A: You can use 0-10VDC, 1mA or more or 0-5VDC, 1mA or more analog signal to vary speed using a PLC. Some parameters have to be changed based on your desired input voltage value. Set the ID 2256(Analog operation speed command gain) to 200 (rpm/V) and Set ID2261 (Analog operating speed maximum value) to 2000 (rpm). See below for explanation.

Step 1: set the ID 2256(Analog operation speed command gain)
Determine the gain from the following relationship
 
Maximum Speed(rpm) = Speed Gain (rpm/V) x DC (V)、 
Thus, Speed Gain (rpm/V) = Maximum speed (rpm) / DC(V)

EX 1) Desired max speed 4000(rpm) using 0-5VDC, Speed Gain (rpm/V) = 4000/5 = 800 (rpm/V)
EX 2) Desired max speed 4000(rpm) using 0-10VDC, Speed Gain (rpm/V) = 4000/10 = 400 (rpm/V)
EX 3) Desired max speed 2000(rpm) using 0-10VDC, Speed Gain (rpm/V) = 2000/10 = 200 (rpm/V)
EX 4) Desired max speed 3000(rpm) using 0-5VDC, Speed Gain (rpm/V) = 3000/5 = 600 (rpm/V)

Step 2: Set ID2261 (Analog operating speed maximum value) to the desired max speed value
BX2 speed limit setting example ID 2256, 2261.jpg
BX2 speed limit setting example ID 2256, 2261.jpg (174.77 KiB) Viewed 2693 times

Please reference pages 108-109 of the manual for more information: http://orientalmotor.com/products/pdfs/ ... 142-3E.pdf

LR

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