KEN_KACEL
Member
The Phase 2 of our project uses deviceNet IF4I analog input cards. The devices hooked to the input cards are Pressure transducers. When the device(PT) is grounded to the building ground the inputs goes to 11ma when disconnected it will go to the normal 6ma. This value is affected by the 100HP vfd in the cabinet. We have searched high and low for wiring problems and also added 1746I8n to the main rack and still get the rereferenced signal. The potential between the PT device and ground is 20-40mv.
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At our wits end !!!!!!
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At our wits end !!!!!!
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