{"id":"automationdirect-gs4-2050","model_id":"GS4-2050","name":"AutomationDirect DURApulse GS4-2050","summary":"The DURApulse GS4-2050 is an open-frame AC variable frequency drive in the GS4 series. It accepts 230 VAC input, either 3-phase or 1-phase, and produces 3-phase output, rated 50 hp on 3-phase input and 10 hp on 1-phase input. Control is sensorless vector (SVC) or V/Hz, and the drive communicates over an RS-485 (RJ12) port using Modbus RTU, Modbus ASCII or BACnet.","study_notes":["Amperage rating 139 A with 3-phase input and 33 A with 1-phase input; variable torque amperage rating 9 A.","Control modes are SVC or V/Hz; output type is PWM.","Output frequency range 0.1-599 Hz; carrier frequency range 2-15 kHz.","Discrete I/O: 8 inputs at 24 VDC (sinking/sourcing), 4 outputs rated 240 VAC and 48 VDC (relay/sinking/sourcing) with two Form C (SPDT) relays, 3 A/point relay and 50 mA/point discrete.","Analog I/O: 3 input channels (0-20 mA and 4-20 mA, +/-10 VDC, 11-bit resolution) and 2 output channels (0-20 mA and 4-20 mA, 0-10 VDC, 10-bit resolution).","Input signal options are 4-20 mA, voltage or potentiometer input.","Single RS-485 (RJ12) communication port with speeds up to 115.2k baud; optional EtherNet/IP and Modbus TCP cards available.","Open frame construction, panel or wall mounting; enclosure is rated both IP00 and IP20.","No integrated EMI filter and not internally bypassed; an external dynamic braking unit is required.","Built-in reverse capability; programming language is ladder; screw terminal connectors.","A user-supplied external fuse is required.","Intended for use with 3-phase induction motors."],"safety_notes":["Safe Torque Off (STO) is built-in.","UL Listed, File # E198015; no UL Recognized file and no UL Hazardous file.","No CSA file number is listed.","CE declaration available and RoHS status compliant (see CE document); EU REACH document available."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-2050","title":"DURApulse AC High-performance Drive: 230 VAC, 50hp with 3-phase input, 10hp with 1-phase input, (VFD) (PN# GS4-2050) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS4-2050_cutsheet.pdf","title":"GS4 2050 cutsheet","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":9,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"vfd","manufacturer":"automationdirect","controllers":[],"weight_kg":53.9775,"supply_voltage":"230 VAC","frame_size":"D","output_type":"PWM output","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-gs4-2050","license":"https://creativecommons.org/licenses/by/4.0/"}