PEI-EI US-5I150A-C-1 Electronic Speed Control Governor — 220V 50Hz 160W

PEI-EI · US-5I150A-C-1 · Electronic Governor · Diesel / Gas Engine Speed Controller · In stock

The PEI-EI US-5I150A-C-1 is an electronic speed control unit (ESC / governor / actuator driver) designed for isochronous and droop speed regulation of diesel and gas-fueled engines. Operating from a 220V AC 50Hz supply and delivering up to 160W to the actuator, the unit accepts a magnetic pickup (MPU) speed signal and outputs a proportional current to an EFC (Electronic Fuel Control) actuator that positions the fuel rack. It is widely used on gensets, marine propulsion engines, irrigation pumps, air compressors and oilfield equipment — the same closed-loop class as Woodward, Barber-Colman and Dynalco governors.

For new build-outs and retrofit upgrades, the US-5I150A-C-1 is typically integrated with a Allen-Bradley CompactLogix controller, a Siemens SIMATIC S7-1200, a Mitsubishi MELSEC-Q CPU, an Omron CP1H analog module, or a Yaskawa / Schneider variable-frequency drive. KOEED stocks the PEI-EI governor alongside the analog I/O and VFD hardware needed to complete the engine speed loop.

Key Specifications

Datasheet Highlights

• Closed-loop MPU feedback — the unit reads engine RPM from a magnetic pickup mounted on the flywheel ring gear, compares the frequency to the internal speed set-point, and outputs a proportional current to the EFC actuator that drives the fuel rack closed-loop.
• 220V AC 50Hz mains operation — designed for industrial AC supplies common in genset switchgear and marine engine rooms, eliminating the need for an external DC power supply or step-down transformer.
• 160W actuator drive — sufficient headroom for mid-size EFC / EFA actuators used on diesel engines from approximately 50 kW to 600 kW, including Deutz, Cummins, Perkins, Weichai and Yuchai fuel-system platforms.
• Front-panel adjustments — speed set-point, gain, stability (PID compensation) and droop are trimpot-adjustable, enabling field calibration during commissioning or after a fuel-system overhaul.
• Drop-in replacement class — the US-5I150A-C-1 shares form factor and terminal layout with legacy PEI-EI 150A-series controllers, making it a direct upgrade for panels originally built around the US-5I100A or US-5I120A.

Typical Applications

The US-5I150A-C-1 sits in the engine speed-control loop — between the MPU sensor on the flywheel and the EFC actuator on the fuel pump. It is normally paired with a PLC, HMI, or VFD that handles load sharing, synchronization and remote start/stop. Common deployments include:

• Standby and prime-power generator sets — the governor holds 50 Hz output within ±0.25 Hz under step load, with a downstream controller managing genset mains-parallel synchronization and load sharing.
• Marine main propulsion and auxiliary engines
• Irrigation, dewatering and oil-field pump skids — the governor maintains a constant engine speed that drives a centrifugal pump, keeping flow and head stable across varying well conditions.
• Air compressors and screw compressors — the unit regulates the diesel engine that drives the compressor element, working with the air-end inlet valve for cut-in / cut-out control.
• Engine test cells and dynamometer stands — closed-loop speed control for durability and emissions testing, often integrated with a Yaskawa or Schneider Altivar drive acting as the dynamometer load.
• Biogas and natural-gas generator sets — paired with a gas train and mixture control valve, the governor regulates the gas-engine fuel rate to maintain 50 Hz output.

Related Modules & Cross-Reference

The US-5I150A-C-1 is almost always deployed with a controller and analog I/O that supervise the engine. KOEED stocks the PLC analog-output modules, VFDs and engine controllers used alongside it across the nine core brands — send your full BOM and we will quote the lot.

Looking to integrate the governor into a Step 7 / Studio 5000 / GX Works project? Use the KOEED PLC Hex to Float Converter to handle Modbus register scaling on the MPU frequency read-back.

Warranty & Authenticity

• Tested before shipment — every US-5I150A-C-1 is powered up on the bench, the MPU input is stimulated with a calibrated signal generator, and the EFC output is verified against the published characteristic curve before it leaves our Shenzhen / Hong Kong facility.
• Worldwide shipping — DHL, FedEx and UPS available to North America, Europe, the Middle East, South-East Asia and South America. Consolidated shipping for full-engine BOMs on request.
• Quote within 24 hours — send your part list to Moritta@KOEED.COM on a business day and you will receive availability and pricing the same day.
• Obsolete & hard-to-find specialists — if the 5I150A is no longer available in your region, list the engines you are maintaining and we will propose the nearest PEI-EI 5I-series equivalent or a cross-brand drop-in.

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