SCN6 actuator - npn or pnp?

[Carl]

Hi all and thanks in advance for any advice.

I am just about to upgrade my motors and purchase a pair of SCN6's 50kgf with 150mm travel. The million dollar question is do I order npn or pnp IO type. I already own a very good 10a 24v Calex PSU which should be man enough for both motors and was planning on buying some RS485 to USB adapters.

So back to the question, pnp or npn? What should I get. Thanks for any help

[Carl]

Well I've gone and ordered the pnp version... hope its right. Decided to go for the 40kgf as they had a much better speed and power profile with 150mm throw. Cannot wait until they arrive.

[xsimka]

Well I've gone and ordered the pnp version... hope its right. Decided to go for the 40kgf as they had a much better speed and power profile with 150mm throw. Cannot wait until they arrive.

Need some SCN 6 actuator - npn or pnp?

[xsimka]

Well I've gone and ordered the pnp version... hope its right. Decided to go for the 40kgf as they had a much better speed and power profile with 150mm throw. Cannot wait until they arrive.

what must SCN 6 actuator - npn or pnp?

[sirnoname]

The software supports both

[xsimka]

The software supports both

ok then what is better ???

[weeedy]

Seems to be your own choice ... sometimes, PNP is regarded as the safer of the two options, because ground faults could have the effect that NPN sensors send the wrong signal.

Found this info on german shopping site http://de.rs-online.com/web/generalDisp ... on/npn-pnp