Diagnose a VFD power-board fault by checking the DC bus, precharge, load and thermal evidence first. Reduce repeat failures and specify the right spare.
Sep 23, 2026
Article Category
News
Procurement notes and technical articles grouped under News for industrial automation buyers.
Sep 17, 2026
PLC-5 and 1771 Spares: What to Capture Before a Shutdown Replacement
The shutdown clock changes how people diagnose a PLC-5 rack. A weak power supply, a processor fault, and an overloaded 1771 output can all present as a dead or unstable chassis, yet each requires a different spare and a different restart test. When the purchase request says only “PLC-5 module urgently required,” the most important…
Sep 16, 2026
HIMA Safety Spares: Connecting Module and Relay Evidence Before Proof-Test Closeout
Proof-test closeout is a poor time to discover that a HIMA connecting module or relay amplifier was sourced without enough evidence. The RFQ should connect the spare to the safety function, termination, final element, diagnostic state, and validation record. DriveKNMS covered Triconex yesterday and Ovation/WDPF before that, so a HIMA-focused safety maintenance topic keeps the…
Sep 15, 2026
Triconex TMR Spares: Communication and Digital Output Evidence Before Proof Test
A Triconex proof test is not the moment to discover that a communication module, digital output, termination detail, or final element load was never documented. TMR spare planning should make the installed safety function visible before purchasing compares stock. DriveKNMS readers support safety systems where downtime pressure and validation discipline collide. The right spare is…
Sep 14, 2026
Ovation and WDPF Spares: Controller and Analog Input Evidence Before Unit Restart
A unit restart can be delayed by a DCS controller fault, an analog input gap, or a missing piece of cabinet evidence. Ovation and WDPF spare planning should connect the module number to the process loop and restart test before a buyer compares stock. DriveKNMS readers often support power and process systems where older Westinghouse…
Aug 21, 2026
Honeywell FSC Safety Spares: I/O and Termination Evidence Before Proof Test
Safety-system spares should never be selected only by a short part number. A Honeywell FSC I/O fault may involve the module, the termination assembly, field wiring, proof-test documentation, or the logic around the safety function. DriveKNMS readers work under practical shutdown pressure. They need parts that can be sourced quickly, but they also need evidence…
Jul 21, 2026
Yokogawa UT350-01 Spares: Temperature Controller Evidence Before Failure
A panel temperature controller can be small enough to be overlooked in a plant spare review, yet its failure can stop a heater, upset a batch, or force an operator to run without a trusted indication. The Yokogawa UT350-01 must be identified by input, output, alarm, power, wiring, and loop role rather than by front-panel…
Jul 20, 2026
Yokogawa CENTUM Power Supply Spares: Keep the DCS Recovery Path Complete
A DCS power-supply failure can look like a controller, I/O, or network failure because several racks lose visibility together. For a Yokogawa CENTUM installation, the spare plan must account for rack position, load, redundancy, alarm contacts, Vnet dependencies, and restart sequence. A power module on the shelf is useful only when the recovery path is…
Jul 17, 2026
GE Multilin UR Spares: CPU, I/O, and Communications Evidence
GE Multilin UR systems are often maintained as a family even though the actual failure may involve a CPU, digital I/O, CT/VT module, power supply, or communication card. The wrong spare can fit the relay cabinet and still fail to restore the protection function because the settings, firmware, or external wiring do not match. DriveKNMS…
Jul 16, 2026
MiCOM Protection Relay Spares: Evidence for a Safe Replacement Decision
A protection relay replacement is not an ordinary control-module swap. The relay may sit between a measured fault and a trip decision, so the procurement record has to preserve the installed function, wiring, settings ownership, test method, and approval path. A close-looking front panel is not enough evidence for a safe replacement. DriveKNMS readers often…