You can use another source for 24 volts, but your MUST link the two 24 volts sources by bonding the zero volt line. You you do not, one source is "floating" to the other.
You can use another source for 24 volts, but your MUST link the two 24 volts sources by bonding the zero volt line. You you do not, one source is "floating" to the other.
I did this wiring but it didn t work at all
In this diagram you don't use 0 volt of external power source.
Connect 0 of the DX200 and 0 of power source together.
In this diagram you don't use 0 volt of external power source.
Connect 0 of the DX200 and 0 of power source together.
do you mean like this
why it didnt work in the first diagram ,I know the 0 volt is the same 
when I apply the 24 volts the 0 volt from the dx200 still connect ??
Yes, same an new diagram.
As you know the direction of electric current is from positive pole to negative pole of power source, you are using +24 from external power source and the electric current go out from it but couldn't come back to negative pole (0 volt of external power source). therefore the circuit couldn't close and the it don't work.
