Category Archives: On-site stories

Replacement of the Main Supply Fan for a Large Hospital

Delta Automation has just completed the entire replacement/retrofit of a 250 horsepower VFD for the main air supply fan for a large hospitals’ HVAC system. This work had to be completed over a week-end. Beginning after normal working hours on a Friday, … Continue reading

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700 Horses….replaced!

A few days ago, a fresh water treatment facility in the tidewater area of Virginia, had two aged 350 H.P. VFDs fail catastrophically. That left them with only an auxiliary pump and about 30% of their capacity. A call was made to … Continue reading

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An Ageing Power Supply Finally Gives Up!

Power Supply Nearing 40 Years Old, Finally Fades Away  Recently a large industrial client had Delta investigate why its’ B266 reed relay output cards had been failing. Keep in mind these output cards are almost 40 years old. Over the … Continue reading

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A Commentary posted on Facebook about a PLC & I/O conversion from a Happy Client!

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Converting a 984B Ladder Logic Drum Sequencer Loadable to a Quantum SCIF Function Block

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Margarete Culley is voted in as the new NAWIC President of the Richmond Chapter # 141

Tuesday night, September 18th, 2012, the Richmond Chapter of NAWIC (National Association of Women in Construction), installed new officers and directors with Margarete Culley, CEO of Delta Automation, Inc., as its’ new President for the years 2012-2013. This is Margarete … Continue reading

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Delta adds an additional Field Service Engineer

Todd Maliepaard has joined Delta Automations’ field service group. Todd was recently Honorably discharged from the U.S. Navy. He served aboard several vessels and in Afghanistan.

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Temporary Remote I/O Cable Replacement Causes an Unexpected Issue

During a recent Modicon remote I/O service call at a large oil refineries tank farm which had been having intermittent communication, an unusual problem was discovered. The system had been having communication drop-outs intermittently for several weeks. During that time, … Continue reading

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Triple Threat Failure

As you can see, this small VFD has failed. Quite spectacularly too!  This small unit had not been properly maintained. It had a blocked and failed cooling fan plus a loose power lead. This caused the unit and terminal to … Continue reading

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Modbus Plus Super Tap: Features and a ‘Gotcha’

The Modbus Plus Super Tap is a vast improvement over the previous several designs that have been in service since the mid-eighties. The first connector to be used was the MBKT type. It had split type compression connections and used … Continue reading

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