{"id":"automationdirect-gs31-21p0","model_id":"GS31-21P0","name":"AutomationDirect DURApulse GS31-21P0","summary":"The GS31-21P0 is an enclosed DURApulse GS30 series AC variable frequency drive. It accepts 230 VAC single-phase input and provides three-phase output for a 1 hp motor, using SVC, V/Hz, FOC, encoder or torque control modes. It includes RS-485 Modbus RTU/ASCII communication, USB, integrated dynamic braking and built-in Safe Torque Off (STO).","study_notes":["Single-phase 230 VAC input, three-phase output.","Control modes: SVC, V/Hz, FOC, encoder or torque.","Communication: one RS-485 (RJ45) port and one USB B port; Modbus RTU Slave and Modbus ASCII Slave, up to 115.2k baud.","Integrated dynamic braking.","Carrier frequency range 2–15 kHz; output frequency range 0.1–599 Hz.","Mounting: 35 mm DIN rail, panel or wall.","Programming language: Ladder.","For use with 3-phase induction and permanent magnet AC motors.","Optional communication, encoder and I/O modules are available.","Integrated EMI filter: No.","Analog inputs: 2 channels, current/voltage, 12-bit; analog outputs: 1 channel, current/voltage, 10-bit.","Discrete I/O: 7 inputs (24 VDC sinking/sourcing) and 3 outputs (relay/sinking/sourcing)."],"safety_notes":["Safe Torque Off (STO) is built-in.","UL Listed, file # E198015.","CE marked.","RoHS compliant.","A user-supplied external fuse is required."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs31-21p0","title":"DURApulse AC High-performance Drive: 230 VAC, 1hp with 1-phase input, (VFD) (PN# GS31-21P0) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS31-21P0_cutsheet.pdf","title":"GS31 21P0 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":[],"supply_voltage":"230 VAC","rated_power_kw":0.745699872,"frame_size":"B2","output_type":"PWM output","ip_rating":"IP20","operating_temp_min_c":-20,"operating_temp_max_c":50,"joints":[],"protocols":["modbus-rtu","modbus-ascii"],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/automationdirect-gs31-21p0","license":"https://creativecommons.org/licenses/by/4.0/"}