{"id":"automationdirect-gs4-2025","model_id":"GS4-2025","name":"AutomationDirect GS4-2025","summary":"The DURApulse GS4-2025 is a 230 VAC high-performance variable frequency drive for three-phase induction motors. It provides SVC or V/Hz control, integrated dynamic braking, RS-485 communications for Modbus RTU, Modbus ASCII and BACnet, and a built-in Safe Torque Off function. Optional EtherNet/IP and Modbus TCP cards can be added.","study_notes":["Input phases: 3 and 1; output phases: 3.","Horsepower by input phase: 25 hp with 3-phase input, 10 hp with 1-phase input.","Amperage rating: 71 A with 3-phase input and 33 A with 1-phase input; variable torque amperage rating 75 A.","Control mode: SVC or V/Hz; carrier frequency range 2–15 kHz; output frequency range 0.1–599 Hz.","RS-485 (RJ12) port supports speeds up to 115.2k baud; BACnet is listed as a port protocol but has no matching protocol id in the reference list.","Optional EtherNet/IP and Modbus TCP cards are available.","Analog I/O: 3 analog input channels (11-bit resolution) and 2 analog output channels (10-bit resolution).","Discrete I/O: 8 discrete input points at 24 VDC and 4 discrete output points rated 240 VAC and 48 VDC.","Input signal: 4–20 mA, voltage or potentiometer input; output type: PWM output.","Reverse capability is built in; integrated EMI filter: no; internally bypassed: no.","Mounting: panel or wall.","Item shipping weight: 26.8 lb."],"safety_notes":["Built-in Safe Torque Off (STO) safety function.","UL Listed File # E198015.","CE declaration available; RoHS status: Yes.","EU REACH document available.","User-supplied external fuse required."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-2025","title":"DURApulse AC High-performance Drive: 230 VAC, 25hp with 3-phase input, 10hp with 1-phase input, (VFD) (PN# GS4-2025) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS4-2025_cutsheet.pdf","title":"GS4 2025 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":[],"supply_voltage":"230 VAC","frame_size":"C","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-gs4-2025","license":"https://creativecommons.org/licenses/by/4.0/"}