{"id":"automationdirect-gs4-4250","model_id":"GS4-4250","name":"AutomationDirect GS4-4250","summary":"The GS4-4250 is a DURApulse GS4 series AC variable frequency drive in an open-frame, wall-mount housing. It takes 460 VAC three-phase input and is rated 250 hp with 3-phase input, using either sensorless vector control (SVC) or V/Hz control to drive three-phase induction motors. It provides RS-485 communications, analog and discrete I/O, and an embedded ladder-logic PLC function.","study_notes":["DURApulse GS4 series, G frame size, controller type listed as high-performance.","Control modes: SVC or V/Hz; output type PWM; reverse capability built-in.","Carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.","Current ratings: 352 A amperage rating, 370 A variable torque rating.","Serial port: one RS-485 (RJ12) connection supporting Modbus RTU, Modbus ASCII and BACnet at up to 115.2k baud.","I/O: 8 discrete inputs at 24 VDC (sinking/sourcing), 4 discrete outputs (relay/sinking/sourcing, 240 VAC and 48 VDC), 2 Form C (SPDT) relays.","Analog I/O: 3 inputs (0-20 mA / 4-20 mA, +/-10 VDC, 11-bit) and 2 outputs (0-20 mA / 4-20 mA, 0-10 VDC, 10-bit).","Load current 3 A/point for relays and 50 mA/point for discrete outputs; screw terminal connectors.","Programming language: ladder logic (GSLOGIC drive PLC software, GSOFT2 configuration software).","Optional EtherNet/IP and Modbus TCP communication cards are available; an EDS file and Rockwell AOI are provided.","Enclosure is open frame with IP00 and IP20 ratings; no integrated EMI filter; not internally bypassed.","Shipping weight 377 lb (about 171 kg); country of origin Taiwan."],"safety_notes":["Safe Torque Off (STO) is built-in.","Open-frame enclosure, IP00 and IP20, wall mounting; must be installed in an appropriate enclosure environment.","An external dynamic braking unit is required.","A user-supplied external fuse is required.","Operating temperature rating -10 to +50 deg C."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-4250","title":"DURApulse AC High-performance Drive: 460 VAC, 250hp with 3-phase input, (VFD) (PN# GS4-4250) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS4-4250_cutsheet.pdf","title":"GS4 4250 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":171,"supply_voltage":"460 VAC","rated_current_a":352,"frame_size":"G","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-gs4-4250","license":"https://creativecommons.org/licenses/by/4.0/"}