Meaning of ON voltage for BX2 outputs

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om_tech_support_KR
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Joined: Thu Jan 11, 2018 3:03 pm

Meaning of ON voltage for BX2 outputs

Post by om_tech_support_KR » Fri Mar 29, 2019 7:19 am

Q: What does the ON voltage on the outputs of a BX2 mean? Is that the voltage I read from the driver?
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A: Since our outputs are open collector type you have to supply voltage to be able to read them. For OUT0 to OUT2 it would be 4.5 to 30 VDC, 100 mA or less and for ASG and BSG it would be 4.5 to 30 VDC, 20 mA or less. You would limit the current by adding resistors like in the wiring diagram examples below. The ON voltage shown would be the maximum voltage drop seen when reading the outputs. You will read very close to the value you input to the outputs. For the OUT0 to OUT2 outputs max voltage drop you will see is 1.6 VDC and for the ASG and BSG outputs max voltage drop you will see is 0.5 VDC. ON voltage is a term PLC manufacturers commonly use to refer to the voltage drop.
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