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Robert Graham

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‎2025-07-11

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RobGraham

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PM5000 Ethernet port removable?

I have a strange question. At a customer site, I found a PM5000 meter where the Ethernet cable had come out, taking the plastic portion of the port w...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

407 0 2

2025-01-29 12:48 PM

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RobGraham

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ION meter configuration for 3W-Wye

I am at a site where the wye transformers have been grounded through an HRG--no neutral is pulled back to the breakers or the meters. When I arrived,...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

665 0 2

2024-12-18 03:08 AM

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RobGraham

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PM5560 DLF-3000 firmware versions

I have a customer looking to upgrade some fairly ancient PM5560 meters, and there is a some confusion on the complete upgrade path. Based on the mete...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

796 0 1

2024-03-27 06:45 AM

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RobGraham

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PM8000/ION9000 phasor diagram colors

When a PM8000 or ION9000 is configured for a delta system, the phasor colors don't match between the current and voltage. That is, Vbc is blue and Vc...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

2048 0 2

2022-11-09 06:42 AM

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RobGraham

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ION setpoint module learning

ION experts, Does anyone know offhand what algorithm the setpoint module uses to calculate its learned limits? That is, what is the output value--pea...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

1864 0 4

2021-06-25 10:56 AM

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RobGraham

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Differentiator module in PM8000

I am trying to implement some rate-of-change alarms in a PM8000 framework. I can do this with an arithmetic module, but I see that the ION9000 has a ...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

1063 0 1

2019-11-05 01:48 PM

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RobGraham

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Updated PM8000 Modbus register list?

Is there an updated Modbus register list for the PM8000 firmware v1.4.1? I have a custom framework built on v1.1.0 with Modbus Slave modules using th...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

1492 0 2

2018-01-31 07:57 AM

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RobGraham

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Modbus Event Log framework

Is it possible to expose some kind of event or SER log to Modbus in an ION meter (7650 and PM8000)? In the simplest form, my customer would like to h...

EcoStruxure Power & Grid icon_circle Metering & Power Quality

1058 0 2

2017-08-24 02:09 PM

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