Current limiting for Industrial IO block

[Makaram]

Hi,
I'm thinking of designing a circuit for work which would interface with an 24v IO block for a Kuka robot.
My plan is to buck down my 24V, do my sensor stuff, then using some Logic switching Fets, drive the IO.
My question: Do I need a current limiting resistor in series with the IO? Or are industrial IO blocks already limited.

Forgive my ignorance, I'm new to industrial applications.

Hope some1 can enlighten me,

Regards,

Matt

 

[alec_t]

Don't the datasheets for the robot/block tell you the in/out current specs?

 

[AD-Guy]

Hi Makaram,

I saw often that a series resistor is used for limiting the current on inputs to protect against spikes and ESD. The solutions are manifold depending on the specification you want to achieve. Here is an application with useful application tips on interfacing the microcontroller or IO-ports to the industrial environment: https://www.ichaus.de/wp1_mcu_interface . Here you find a complete 24V IO-board with AD and SPI interface: https://www.raspberrypi.org/phpBB3/viewtopic.php?t=9556&sid=a98d84943f7db20dd53348135d463765 .

Regards AD-Guy