# AutomationDirect GS23-20P5

Hardware · `GS23-20P5` · verification: source checked

The GS23-20P5 is a DURApulse GS20 series enclosed general purpose AC variable frequency drive. It operates from a 230 VAC supply and provides 1/2 hp with a 3-phase input or 1/4 hp with a 1-phase input, using SVC, V/Hz, flux vector or torque control modes. It has an RS-485 port, integrated dynamic braking and built-in Safe Torque Off, and accepts an optional EtherNet/IP and Modbus TCP card.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 230 VAC |
| Frame size | A2 |
| 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

- Safe Torque Off (STO) is built-in.
- Enclosure rating is IP20, so the drive must be installed in an enclosure.
- A user-supplied external fuse is required.
- Operating temperature limit is -20 to +50 °C.
- Reverse capability is built-in.

## Study notes

- Control modes are sensorless vector control (SVC), V/Hz, field oriented control (FOC) and torque mode.
- Carrier frequency range is 2–15 kHz; output frequency range is 0.1–599 Hz.
- Serial communication is one RS-485 (RJ45) port plus one USB B port; port speed up to 115.2k baud as Modbus RTU or Modbus ASCII slave.
- EtherNet/IP and Modbus TCP are not built in; they require an optional communication card.
- I/O: 7 discrete inputs at 24 VDC (sinking/sourcing), 3 discrete outputs (relay/sinking/sourcing, 240 VAC and 48 VDC), 2 analog inputs (current/voltage, 10-bit and 12-bit) and 1 analog output (10-bit).
- Analog input ranges are 0–20 mA, 4–20 mA and ±10 VDC; analog output ranges are 0–20 mA, 4–20 mA and 0–10 VDC.
- Programming language is ladder logic (embedded drive PLC); terminals are spring clamp type.
- Intended for 3-phase induction and permanent magnet AC motors; no integrated EMI filter; not internally bypassed.
- AutomationDirect lists the item shipping weight as 2.45 lb.
- Agency files listed: UL Listed E198015, CE, RoHS; no CSA file.

## Sources

1. [DURApulse AC General Purpose Drive: 230 VAC, 1/2hp with 3-phase input, 1/4hp with 1-phase input, (VFD) (PN# GS23-20P5) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs23-20p5) (accessed 2026-10-26)
2. [GS23 20P5 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS23-20P5_cutsheet.pdf) (accessed 2026-10-26)

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