Description

Application Scenarios

In a combined-cycle power plant running ABB 800xA, the control building experienced a utility-side voltage sag during a grid switching event. The non-redundant, third-party DIN PSU feeding one of the S800 I/O racks drooped below its hold-up threshold, tripping the 24 V rail and forcing a partial process shutdown that cascaded into a 6-hour restart cycle. During the next planned outage, the maintenance team replaced both rack PSUs with the 1KHL178016R0001F (PSM03), configured in N+1 parallel. When a similar sag occurred three months later, the redundant 1KHL178016R0001F units rode through the event — the load seamlessly shifted to the secondary module, the 800xA diagnostics logged a “redundancy switch” alarm but no I/O dropped, and the turbine control never blinked. The plant estimated the retrofit paid for itself in averted startup costs within the first event. This case illustrates why the 1KHL178016R0001F isn’t just a power supply — it’s the invisible insurance policy behind a DCS cabinet.

Parameter

Main Parameters	Value/Description
Product Model	1KHL178016R0001F (PSM03)
Manufacturer	ABB
Product Category	Power Supply Module (DCS / PLC Rack PSU)
Input Voltage	100–240 V AC, 50/60 Hz (auto-ranging, no jumper)
Output Voltage	24 V DC ±1 % regulation
Output Current	10 A continuous
Rated Power	~240 W (24 V × 10 A)
Efficiency	≥ 93 % at full load
Redundancy	N+1 parallel operation supported (no external diode module required on matched racks)
Operating Temperature	-25 °C to +70 °C (ambient)
Protection Class	IP20 (cabinet-install)
Mounting Method	35 mm DIN rail or ABB control rack slot
Certifications	UL 508, CE, IEC 61131-2

Technical Principles and Innovative Values

Innovation Point 1: Auto-Ranging Wide AC Input Without Jumpers. Most industrial PSUs either force you to select 115 V or 230 V via a switch (a frequent misconfiguration cause), or they tolerate only one band well. The 1KHL178016R0001F accepts the full 100–240 V AC envelope automatically, making it a single-SKU solution for global projects — a panel built in Europe ships to Southeast Asia without a rewire.
Innovation Point 2: Native N+1 Redundancy Architecture. While generic 24 V DIN supplies need an external OR-ing diode module (and its associated heat and voltage drop) to parallel, the 1KHL178016R0001F is designed from the backplane up to share load with a peer PSM03. In a two-module rack, each carries ~50 % load under normal conditions; if one fails, the survivor picks up the full rack instantaneously. The 1KHL178016R0001F also reports redundancy status to the host system via rack communications, so operators see “PSU B degraded” before the rail collapses.
Innovation Point 3: Ride-Through and Diagnostics. The internal bulk capacitance on the 1KHL178016R0001F is sized for industrial transients — short AC drops that would reset a commodity PSU are absorbed. Front-panel LEDs (Power OK, Overload, Redundancy status depending on rack variant) give field techs a 3-second fault read, and the module’s status is visible in the ABB Control Builder / 800xA hardware tree, enabling remote health checks during walkthroughs.

Application Cases and Industry Value

A petrochemical compressor station running ABB Advant OCS had three S800 I/O racks fed by aging third-party 5 A DIN supplies that were already at 85 % load after a recent I/O expansion. During a summer storm, a lightning-induced voltage swell on the site’s 120 V AC distribution caused two of the three supplies to go into overvoltage lockout simultaneously — the compressor tripped on “I/O fault,” costing roughly four hours of throughput. The EPC contractor’s fix: replace all three with the ABB 1KHL178016R0001F (PSM03) in 2+1 redundant groups (two PSM03s per rack, one cold spare shared). Post-retrofit, the same storm profile hit six months later — the 1KHL178016R0001F units clamped the swell via internal OV protection, cycled back online within seconds, and the compressors never saw an I/O drop. The site reported a 70 % reduction in PSU-related nuisance trips over the following year, and the maintenance lead noted that having a single ABB spare (the 1KHL178016R0001F) cover all three racks simplified the storeroom vs. the old mix of brand-X models.In a second deployment, a paper mill retrofitting an ABB S4C+ robotic cell (where a PSM03 variant also serves as the robot’s internal power distribution/management module with ±15 V aux and safety-enable logic) used the 1KHL178016R0001F as the 24 V backbone feeding both the robot controller and the adjacent S800 I/O slice. The common PSU footprint meant the storeroom carried one part number for two very different loads — a small but real logistics win on a multi-line site.