diginewbee
Supporting Member
Started my first Scada and controls job this week. I am reviewing drawings for a gas valve automation project. There is three valves to automate. The RTU is a ScadaPak32 with 5401 expansion cards. Two valves SOV's are wired to the 5232 controller and the third is on the 5401 DO. I am stuck on how the Digital Outputs should be wired. The 5401 has one positive and one negative terminals per channel. The drawing shows the 5401 DO + output connected to the positive SOV. The negative DO terminal is connected to the SOV negative. The SOV positives terminals are jumpered together at the external terminal block and connected to a 24 DC source that also powers the controller and expansion cards. The cards input output switch is set to close/output for the channel.
The 5232 handles the other two valves and it shows the DO outputs to negative SOV terminals. The DO gnd is connected to the source gnd. The positive DC at the terminal block is again jumpered to all SOV positives and back to source.
I am seeing pos to pos with jumpers and neg to neg on one drawing. Then what appears to be positive DO output to negative SOV connections and Positive SOV connections connected in parallel to a DC source. The 5232 P7 gnd is connected to ground. I have 200 miles to drive to go home this weekend and I can't until this is finished. I don't want to screw up this first assignment. I have only been there a week. How should the ouputs be wired to the SOV positive and negative. Please Help!
The 5232 handles the other two valves and it shows the DO outputs to negative SOV terminals. The DO gnd is connected to the source gnd. The positive DC at the terminal block is again jumpered to all SOV positives and back to source.
I am seeing pos to pos with jumpers and neg to neg on one drawing. Then what appears to be positive DO output to negative SOV connections and Positive SOV connections connected in parallel to a DC source. The 5232 P7 gnd is connected to ground. I have 200 miles to drive to go home this weekend and I can't until this is finished. I don't want to screw up this first assignment. I have only been there a week. How should the ouputs be wired to the SOV positive and negative. Please Help!
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