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AutomationDirect GS21-20P5

The GS21-20P5 is an enclosed DURApulse GS20 series general purpose AC variable frequency drive. It takes single-phase 230 VAC input and produces three-phase output for 3-phase induction and permanent magnet AC motors, rated 2.8 A continuous and 1/2 hp with 1-phase input. It supports SVC, V/Hz, FOC and torque control modes and includes integrated dynamic braking, an attached keypad and RS-485/USB communications.

Source checked10/10 values · 2026-10-26AutomationDirectVFD
Rated current
2.8A
IP rating
IP20

Specification

2 sources
Categoryvfd
Supply voltage230 VAC, 1-phase
Frame sizeA3
Output typePWM output
Operating temp min-20 °C
Operating temp max50 °C

Quick answers

What is the IP rating of the AutomationDirect GS21-20P5?
IP20, per DURApulse AC General Purpose Drive: 230 VAC, 1/2hp with 1-phase input, (VFD) (PN# GS21-20P5) | AutomationDirect (automationdirect.com).

Study notes

  • Control modes: SVC, V/Hz, FOC or torque.
  • Input: 230 VAC single-phase; output: 230 VAC three-phase.
  • Amperage rating 2.8 A; variable torque amperage rating 3.2 A.
  • Output frequency range 0.1-599 Hz; carrier frequency range 2-15 kHz.
  • Communications: RS-485 (RJ45) and USB B; Modbus RTU Slave and Modbus ASCII Slave, up to 115.2k baud.
  • Optional EtherNet/IP and Modbus TCP card available (not built in).
  • Analog I/O: 2 input channels (10-bit and 12-bit) accepting +/-10 VDC or 0-20/4-20 mA; 1 output channel (10-bit) 0-10 VDC or 0-20/4-20 mA.
  • Discrete I/O: 7 sinking/sourcing inputs at 24 VDC; 3 relay/sinking/sourcing outputs at 240 VAC and 48 VDC, including one Form C (SPDT) relay.
  • Load current 3 A/point for relay outputs, 50 mA/point for discrete outputs.
  • Programming language: ladder; spring clamp terminals.
  • Frame size A3; panel or wall mounting; integrated dynamic braking; no integrated EMI filter; reverse capability built in.
  • Supplied with an attached keypad (GS20A-KPD) and a quick start insert.

Safety

  • Safe Torque Off (STO) is built in.
  • Enclosure rating IP20.
  • Temperature rating -20 to +50 deg C.
  • A user-supplied external fuse is required.
  • UL Listed File # E198015; CE declaration and RoHS status available.
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