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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: MSR127RP won't reset after replacing a contactor, K1 K2 LEDs stay off

Right to leave that note alone. A bridge across that loop resets beautifully, right up to the day K2 welds shut and it still resets. Your meter told ...

3 weeks ago
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RE: 1756-OB16E output tag is 1 but the solenoid has no voltage

Electronic fuse, not a glass one. Each group of eight on the OB16E has one, it trips when a point in that group pulls more than it should. Yours tripp...

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

Reverse Word Order ticked and kW reads 400.9 against 401 on the meter. That's the power sorted. Except the energy total, kWh, which the manual has as ...

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

So the contractor's 25 percent was a fan number pasted onto a conveyor quote. Still nothing on the meter then.

3 weeks ago
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RE: Modbus RTU RS-485 to six meters on a MicroLogix 1400, timeouts on the far three

Meter 6 was A and B backwards too. Same new batch as 4 and 5, I'd assumed it was the old type because it had the jumper. Swapped it, all six read, no ...

3 weeks ago
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RE: 1769-OB16 transistor outputs dying one by one on a relay panel

Yes. Backwards it kills the output faster than the coil did.

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

Three things wrong and NC isn't one of them. The block. A standard NC opens because a spring pushes the contacts apart. If they weld or the spring br...

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

Map page attached. There's a column I ignored, says "x0.1" against kW and against the current registers. And a register two addresses above the kW one...

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

There's your antenna. An unshielded office lead lying against the motor leads of a 75 hp drive. The drive chops the 650 VDC bus at a few kHz on those ...

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

500V, motor leads off at the drive end. Lock the drive out first and wait for the bus to bleed, three minutes with the light out before you touch the ...

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

Fair. Asked him. He said he'd want to know when it stopped and for how long. So that's history, whether he calls it that or not. He still says he doe...

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

Belt conveyors, cases on them. Drive shows 9.8 A, nameplate is 14. About 70 percent loaded I think, steady all day, 60Hz all day.

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

Page 41 of the register map. It says "32-bit float, LSW first". Raw: HR3054 = 29056, HR3055 = 17352. Means nothing to me, but there it is.

3 weeks ago
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