analog board requires 0-5V for input to scada system.
as i tested,each output of my circuit gives values of 3.2VDC(voltage sensing) at 240+-VAC,
Current sensor gives output of 2.3VDC at nominal load to the transformer,
and at LM35 varies from 0.3-0.67VDC as body of transformer heats up with extra load.(mounted on core body of transformer)
hence, as i link my output to the analog board WTADC-M,upon switching on my circuit,the ic of the analog board explodes.
twice explode, 1st by inserting all 3 analog inputs to port 1,2,3 with my command ground to the COM port,
2nd test,only my command ground linked to the COM input port of the analog board.
"how can it explode when i only link my command ground to the COM input port."
the analog board was fed 25V power supply from an external component.a RTU power supply.
what am i doing wrong? cud it be my grounding connections wrong??
i cant afford a 3rd explosion.
i hope this is clear to understand.
pls help..
as i tested,each output of my circuit gives values of 3.2VDC(voltage sensing) at 240+-VAC,
Current sensor gives output of 2.3VDC at nominal load to the transformer,
and at LM35 varies from 0.3-0.67VDC as body of transformer heats up with extra load.(mounted on core body of transformer)
hence, as i link my output to the analog board WTADC-M,upon switching on my circuit,the ic of the analog board explodes.
twice explode, 1st by inserting all 3 analog inputs to port 1,2,3 with my command ground to the COM port,
2nd test,only my command ground linked to the COM input port of the analog board.
"how can it explode when i only link my command ground to the COM input port."
the analog board was fed 25V power supply from an external component.a RTU power supply.
what am i doing wrong? cud it be my grounding connections wrong??
i cant afford a 3rd explosion.
i hope this is clear to understand.
pls help..
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