Hi guys,

In a project I have several analog and digital Beckhoff I/Os. The problem is after a while my analog output module (KL4408) stop working. All the channel maintained at a constant voltage. After I changed the module with a new one again after 2 days it happened again. The module wired to some actuators with 24 Vac. I doubt on the ac and dc ground which they are separated. Should I connect the grounds to solve the issue?

Thanks

 

What does the manufacturer's installation instructions indicate what is to be done with the grounds?

Have you compared the existing wiring to that recommended by the manufacturer? If so, what differences have you noted?

 

The manufacturer of Actuator (Regin RVA5-24A) just propose the following connection:

one for 24Vac~ one for 0(gnd), one for control signal (0-10Vdc). And analog output module just has one wire as output (without any reference or com signal) which is 0-10 Vdc.

>What does the manufacturer's installation instructions
>indicate what is to be done with the grounds?