# AutomationDirect GS31-23P0

Hardware · `GS31-23P0` · verification: source checked

The GS31-23P0 is a DURApulse GS30 series enclosed AC variable frequency drive from AutomationDirect. It accepts 230 VAC single-phase input and provides three-phase output for a 3 hp motor, with SVC, V/Hz, FOC, encoder or torque control modes. It includes RS-485 Modbus RTU/ASCII communication, integrated dynamic braking, and built-in Safe Torque Off.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 230 VAC, 1-phase |
| Frame size | C1 |
| Output type | PWM output |
| IP rating | IP20 |
| Operating temp min | -20 °C |
| Operating temp max | 50 °C |

## Connected

- Manufacturer: [AutomationDirect](https://machineschema.com/manufacturer/automationdirect.md)
- Protocols: [MODBUS ASCII](https://machineschema.com/protocol/modbus-ascii.md), [MODBUS RTU](https://machineschema.com/protocol/modbus-rtu.md)

## Safety

- Built-in Safe Torque Off (STO).
- IP20 enclosure.
- Operating temperature range -20 to +50 °C.
- UL Listed file E198015; CE; RoHS compliant.
- User-supplied external fuse required.

## Study notes

- GS30 series, C1 frame, enclosed high-performance VFD.
- Accepts 230 VAC single-phase input and delivers 230 VAC three-phase output.
- Rated 3 hp with 1-phase input; 11 A normal duty and 12.5 A variable torque.
- Control modes: SVC, V/Hz, FOC, encoder or torque.
- RS-485 (RJ45) and USB B ports; Modbus RTU/ASCII slave up to 115.2 kbaud.
- Output frequency range 0.1–599 Hz; carrier frequency 2–15 kHz.
- I/O: 7 discrete inputs (24 VDC), 3 discrete outputs (240 VAC/30 VDC, one Form C relay), 2 analog inputs, 1 analog output.
- Integrated dynamic braking; no integrated EMI filter; not internally bypassed.
- Mounts on 35 mm DIN rail, panel or wall.
- Optional communication, encoder and I/O modules are available.
- Spring clamp terminals; ladder programming supported via GSLOGIC.
- For use with 3-phase induction and permanent magnet AC motors.

## Sources

1. [DURApulse AC High-performance Drive: 230 VAC, 3hp with 1-phase input, (VFD) (PN# GS31-23P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs31-23p0) (accessed 2026-10-26)
2. [GS31 23P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS31-23P0_cutsheet.pdf) (accessed 2026-10-26)

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