VFD modbus interrupt problem found. Than reset the VFD.

VFD modbus interrupt problem found. Than reset the VFD.

Problem: SCADA always showing HI signal. Problem found: 1 Nos float switch problem. HI signal float switch problem & float switch connection terminal…
Unused LIT Collect from DTW- 221,207,120,123 Done
Problem: In those sensors, high temperature shows in transmitter display. But when we check the mA current of sensor signal, that was OK….
Unable to take LIT, due to keep heavy machinery in DTW compound. We collect Electronic PIT, Manual Pressure Gauge. And disconnect power supply…
New UPS installed at DTW-218 and old UPS brought to plant for problem checking. Now the pump is running and everything is normal.