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edj
@edj
Trusted Member
Joined: Jan 15, 2025
Last seen: Sep 21, 2026
Topics: 7 / Replies: 49
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RE: Ultrasonic level in a wet well jumps 2m and short cycles the lead pump

Meter the loop again with the well quiet and then again when it's spiking, but do it at the sensor head, not at the card. If it swings at the head too...

3 weeks ago
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RE: Panel shop used a standard red 22mm pushbutton as the E-stop, auditor flagged it

Forty rigs with a red stop button. Somebody should tell them.

3 weeks ago
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RE: 20 HP DOL motor hums and won't turn, overload trips after a minute

Clip was heating the fuse for months. Then one hot day.

3 weeks ago
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RE: PowerFlex 525 F013 ground fault only on the first start each morning

Three weeks ago is when the fog started. Drive goes back on the shelf.

3 weeks ago
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RE: G120 runs the pump backwards after a motor swap

A bolted guard is why nobody checks rotation. Ours is the same, two people and a torch.

3 weeks ago
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3 weeks ago
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RE: PowerFlex 525 F004 undervoltage on several drives at the same second

Top four running, bottom four idle with a full bus. That's the whole difference.

3 weeks ago
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RE: Eight machines, one screen for everything, proper SCADA or a bigger PanelView Plus 7

Owner went for the small SCADA. Ignition on one PC, smallest licence the integrator could put together, one client, all eight machines, running and st...

3 weeks ago
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RE: Ignition Modbus TCP to a power meter, kW float register pair reads 1.27e+30

Checked, it was HRUI already. So I read the manual again, page 43, and the energy registers are marked "MSW first", the opposite of the power ones. Sa...

3 weeks ago
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RE: Fitted PowerFlex 525s to four conveyor motors, energy bill did not change

Pulled a week out of the historian for the four drives. About 6 kW each, flat, all shift. No saving to chase then. Constant torque at full speed, sam...

3 weeks ago
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RE: Power meter kW over Modbus is ten times the clamp meter reading

Read the scale factor register, it holds -1. Applied it in the ladder as ten to that power times the raw value. 187.4 kW, 231.0 A, matches the display...

3 weeks ago
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RE: 2-wire prox keeps an S7-1200 input on with nothing in front of it

Stores buys what's cheap. Put a note on the bin.

3 weeks ago
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RE: CRC errors on one Stratix 5700 port, patch lead runs through the PowerFlex 755 panel

The twist cancels what both wires see equally. Motor leads a finger away from one side of the pair don't hit both wires equally. The shield takes it a...

3 weeks ago
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RE: Eight machines, one screen for everything, proper SCADA or a bigger PanelView Plus 7

Went back to the integrator with "smallest edition that logs, one PC, one client". Price came down to a bit under double the PanelView. Owner's thinki...

3 weeks ago
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