1/21/2020 10:32 AM | |
Posts: 2 Rating: (0) |
Dear all, sorry i am facing two problems similar to the one discussed here . 1. I have weighing scale for chlorine cylinder with 4-20mA output . I hired an automation engineer to program our PLC and tell me the inputs for 4-wire configuration . He added in both PLC and SCADA and we tested with cureent injector the readings were fine . When he left and i pull a wire and try to connect the balance ( which was generating below 10 mA ) i was getting Over range reading in SCADA. I tried to change the power supply of Scale (before it was a small switching power supply) with transformer based adopter and the reading became ok . 2. Second problem is that we have Siemens Ultrasonic level transmitter same problem is happening of over range here also . Here even i can't change power supply :( I checked the Analogue input module all jumpers are in 4-20mA 4-wire configuration . ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 01/21/2020 11:05:22New subject after splitting |
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1/21/2020 11:07 AM | |
Joined: 6/19/2017 Last visit: 9/6/2024 Posts: 8175 Rating: (172) |
Best regards Jen_Moderator |
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