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Hi Every body,
I've problem with AAI143-H DCS Analog input module. I have 2 Ea radar level model 3301 rosemount for monitoring level on sphere tank. both level channel connected on same AI module (AAI143-H - isolated) on DCS yokogawa to radar level on sphere tank. values of both level always bounce if 2 level online. if we take offline one of both level (it just +24VDC disconnected) and -24VDC still connected to level transmitter, the other level will be steady and values corrected. otherwise, If I disconnect -24VDC too, it will affect to other level with bounce and values not corrected.
We've IE (instrument earth) & PE (protective earth) connected together. i still headache of this design. why that different grounding system joined together with jumper cable? on marshaling cab, I look that IE is bar with isolator which aims to separate so as not connected, but on the other side there is a cable that connects from IE to PE... hahaha..
I suspect, that any some ground loop on this system. but has any one can explain to me or some solutions for this issue, because I still confused what will we do for ground loop.
Thanks for reply,
Taufik
I've problem with AAI143-H DCS Analog input module. I have 2 Ea radar level model 3301 rosemount for monitoring level on sphere tank. both level channel connected on same AI module (AAI143-H - isolated) on DCS yokogawa to radar level on sphere tank. values of both level always bounce if 2 level online. if we take offline one of both level (it just +24VDC disconnected) and -24VDC still connected to level transmitter, the other level will be steady and values corrected. otherwise, If I disconnect -24VDC too, it will affect to other level with bounce and values not corrected.
We've IE (instrument earth) & PE (protective earth) connected together. i still headache of this design. why that different grounding system joined together with jumper cable? on marshaling cab, I look that IE is bar with isolator which aims to separate so as not connected, but on the other side there is a cable that connects from IE to PE... hahaha..
I suspect, that any some ground loop on this system. but has any one can explain to me or some solutions for this issue, because I still confused what will we do for ground loop.
Thanks for reply,
Taufik