{"id":"automationdirect-gs4-27p5","model_id":"GS4-27P5","name":"AutomationDirect GS4-27P5","summary":"The GS4-27P5 is a DURApulse GS4 series AC variable frequency drive in a NEMA 1 enclosure. It accepts 230 VAC input and provides 7-1/2 hp with 3-phase input or 3 hp with 1-phase input, using SVC or V/Hz control. It has RS-485 communication, integrated dynamic braking, and optional EtherNet/IP and Modbus TCP cards.","study_notes":["GS4 series; controller type is high-performance.","Input phases: 3 and 1; output phases: 3.","Horsepower by input phase: 7-1/2 hp with 3-phase input, 3 hp with 1-phase input.","Amperage rating: 24 A with 3-phase input and 11 A with 1-phase input; variable torque rating 25 A.","Control mode: SVC or V/Hz.","RS-485 (RJ12) port supports Modbus RTU, Modbus ASCII, and BACnet at up to 115.2k baud.","Optional EtherNet/IP and Modbus TCP cards are available.","Carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.","Analog I/O: 3 inputs and 2 outputs; discrete I/O: 8 inputs and 4 outputs.","Programming language: ladder; connector type: screw terminals.","For use with 3-phase induction motors.","Integrated dynamic braking and built-in reverse capability."],"safety_notes":["Built-in Safe Torque Off (STO) function.","A user-supplied external fuse is required.","UL Listed File # E198015.","CE and RoHS compliance are stated; CSA file # is None."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-27p5","title":"DURApulse AC High-performance Drive: 230 VAC, 7-1/2hp with 3-phase input, 3hp with 1-phase input, (VFD) (PN# GS4-27P5) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS4-27P5_cutsheet.pdf","title":"GS4 27P5 cutsheet","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":10,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"vfd","manufacturer":"automationdirect","controllers":[],"weight_kg":5.624545388,"supply_voltage":"230 VAC","frame_size":"B","output_type":"PWM output","ip_rating":"IP20","operating_temp_min_c":-10,"operating_temp_max_c":50,"joints":[],"protocols":["modbus-rtu","modbus-ascii"],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/automationdirect-gs4-27p5","license":"https://creativecommons.org/licenses/by/4.0/"}