{"product_id":"abb-acs550-01-08a8-4-acs550-variable-frequency-drive","title":"ABB ACS550-01-08A8-4 ACS550 Variable Frequency Drive","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered to deliver precise speed and torque control for three-phase induction motors, the \u003cstrong\u003eABB ACS550-01-08A8-4\u003c\/strong\u003e variable frequency drive integrates seamlessly into low-voltage industrial power systems. This highly reliable motor controller supports an output power rating of \u003cstrong\u003e4 kW (5 HP)\u003c\/strong\u003e under normal duty conditions and operates across a standard supply voltage range of \u003cstrong\u003e380 to 480 V AC\u003c\/strong\u003e. As part of the established ACS550 series, this drive features an integrated swinging choke that significantly lowers harmonic distortion compared to standard line reactors, enhancing the operational lifespan of connected electrical infrastructure. The unit is housed in a robust \u003cstrong\u003eIP21\u003c\/strong\u003e protection enclosure, making it ideal for standard wall-mounted industrial installations requiring dependable thermal dissipation and compact spatial footprints.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003ePatented Swinging Choke:\u003c\/strong\u003e Reduces line harmonics up to 25% at partial loads without the bulk of external line reactors.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFlexible Control Modes:\u003c\/strong\u003e Supports scalar (V\/Hz) and sensorless vector control for adaptable torque profiles.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eIntegrated EMC Filter:\u003c\/strong\u003e Built-in RFI\/EMC filter ensures compliance with European and domestic high-frequency interference standards.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eNative Fieldbus Interface:\u003c\/strong\u003e Standard Modbus RTU interface on RS-485 terminals simplifies integration into distributed SCADA architectures.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFlashDrop Compatibility:\u003c\/strong\u003e Enables parameter uploading and drive programming in seconds without applying main power.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eCentrifugal pumps requiring energy-efficient flow control and quadratic torque profiles.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eIndustrial supply and exhaust fans utilizing speed-regulated HVAC air distribution.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eMaterial handling conveyors demanding controlled acceleration and deceleration ramps to prevent mechanical stress.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eMixers, agitators, and dosing systems requiring constant low-speed torque stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold; color: #1a365d;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold; color: #1a365d;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eABB\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eACS550-01-08A8-4\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eACS550 Standard Drive\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInput Voltage Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e380 to 480 V AC (+10% \/ -15%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNumber of Phases\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3-Phase Input \/ 3-Phase Output\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNormal Duty Output Power\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e4 kW (5 HP)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNormal Duty Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e8.8 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eHeavy Duty Output Power\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3 kW (4 HP)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eHeavy Duty Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e6.9 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInput Frequency Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 48 to 63 Hz;\"\u003e48 to 63 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eEnclosure Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP21 (UL Type 1)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eControl Connections\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2 Analog Inputs, 2 Analog Outputs, 6 Digital Inputs, 3 Relay Outputs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCommunications\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eModbus RTU (Embedded)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eProduct Dimension (W x H x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e12.50 x 36.90 x 21.20 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNet Shipping Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e6.50 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCommodity Code\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e85044095\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold; color: #1a365d;\"\u003eTerminal Designation\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold; color: #1a365d;\"\u003eFunction \/ Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eU1, V1, W1\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3-Phase AC Power Input Terminals\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eU2, V2, W2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3-Phase AC Variable Frequency Output to Motor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eBRK+, BRK-\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eDynamic Braking Resistor External Connections\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eAI1 \/ AI2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Inputs (Voltage 0...10V \/ Current 0\/4...20mA)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eAO1 \/ AO2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Outputs (Programmable, standard 0\/4...20mA)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eDI1...DI6\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eDigital Inputs (Configurable, 12...24V DC PNP\/NPN logic)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eRO1, RO2, RO3\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eRelay Outputs (Form C, programmable, max 250V AC \/ 30V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1.5rem;\"\u003eThe ACS550-01-08A8-4 directly replaces legacy Frame R1 ACS400 drives with minimal mechanical adaptation. When retrofitting, note that digital I\/O macros may default to \"ABB Standard\"; ensure your existing control wire maps match the programmed macro. For network upgrades, this VFD is fully compatible with optional fieldbus modules including the RPBA-01 (Profibus-DP), RCAN-08 (CANopen), and RETA-01 (EtherNet\/IP \/ Modbus TCP).\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1.5rem;\"\u003eFor high-elevation installations exceeding 1000 meters above sea level, the output current must be derated by 1% for every additional 100 meters. Additionally, when using motor cables longer than 100 meters (328 feet), parasitic capacitance to earth can cause false \"F0016\" (Earth Fault) trips. In these configurations, an external du\/dt filter or output reactor must be installed to protect the drive's output IGBT bridge and prevent winding degradation on older motors.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1.5rem;\"\u003eTo configure analog input signals, ensure the onboard DIP switches (located behind the Assistant Control Panel assembly on the control board) match the desired input signal type: Switch J1 controls AI1 (Voltage\/Current) and Switch J2 controls AI2 (Voltage\/Current). Ensure control wiring is run in separate conduits from high-power motor and input cables to prevent high-frequency noise coupling. Always ground the motor cable shield 360 degrees at both the VFD clamp and the motor terminal box.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"margin: 0; font-weight: bold; color: #9b2c2c;\"\u003eCRITICAL WARNING: ELECTRICAL HAZARD\u003c\/p\u003e\n  \u003cp style=\"margin: 0.5rem 0 0 0; color: #9b2c2c; font-size: 0.95rem;\"\u003eBefore beginning any installation, maintenance, or terminal wiring, disconnect all input power sources and lock out all disconnects. Wait a minimum of 5 minutes after de-energizing the drive to allow the internal DC bus capacitors to discharge fully. Verify zero voltage across terminals U1\/V1\/W1 and the DC bus terminals prior to handling internal components.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the drive vertically on a flat, non-flammable surface, ensuring at least 200 mm of clearance above and below the cooling fan assembly for unimpeded vertical airflow.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the input power conductors to terminals U1, V1, and W1, and the protective earth (PE) grounding conductor to the drive's primary chassis ground terminal.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eTerminate the motor cables to U2, V2, and W2 using symmetrically shielded motor cables to minimize electromagnetic radiation and bearing currents.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eWire control, interlock, and emergency stop circuits to the I\/O terminals, separating them by at least 200 mm from the high-voltage power lines.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52701957063019,"sku":"ACS550-01-08A8-4","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/acs550-01-08a8-4-qtp52tpadkv_cd736f2e-2389-4135-a3bc-1cfc01f5920d.jpg?v=1766478110","url":"https:\/\/www.plcprotech.com\/tr\/products\/abb-acs550-01-08a8-4-acs550-variable-frequency-drive","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}