# AutomationDirect GS4-23P0

Hardware · `GS4-23P0` · verification: source checked

The AutomationDirect GS4-23P0 is a DURApulse GS4 series AC variable frequency drive in a NEMA 1 enclosure. It operates from 230 VAC input, with a 3 hp rating for 3-phase input and 1 hp for 1-phase input, and uses SVC or V/Hz control. It has an RS-485 port, integrated dynamic braking, and built-in Safe Torque Off (STO).

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 230 VAC |
| Frame size | A |
| Output type | PWM output |
| IP rating | IP20 |
| Operating temp min | -10 °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.
- UL Listed File # E198015.
- CE declarations are available; RoHS status is Yes; EU REACH document is available.
- User-supplied external fuse required.

## Study notes

- Input is 3-phase or 1-phase at 230 VAC; output is 3-phase. Rated 3 hp with 3-phase input and 1 hp with 1-phase input.
- Amperage rating is 10 A with 3-phase input and 5 A with 1-phase input; variable-torque rating is 11 A.
- Control mode is SVC or V/Hz; output frequency range is 0.1–599 Hz and carrier frequency range is 2–15 kHz.
- RS-485 (RJ12) port supports Modbus RTU, Modbus ASCII and BACnet at up to 115.2k baud.
- Optional EtherNet/IP and Modbus TCP cards are available.
- Integrated dynamic braking; reverse capability built-in; internally bypassed: no; integrated EMI filter: no.
- Analog I/O: 3 input channels (0–20 mA and 4–20 mA, ±10 VDC, 11-bit) and 2 output channels (0–20 mA and 4–20 mA, 0–10 VDC, 10-bit).
- Discrete I/O: 8 sinking/sourcing 24 VDC inputs and 4 relay/sinking/sourcing outputs rated 240 VAC and 48 VDC; two Form C (SPDT) relays.
- Programming language: ladder; connector type: screw terminals; for use with 3-phase induction motors.
- Enclosure type is NEMA 1; mounting is panel or wall.

## Sources

1. [DURApulse AC High-performance Drive: 230 VAC, 3hp with 3-phase input, 1hp with 1-phase input, (VFD) (PN# GS4-23P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-23p0) (accessed 2026-10-26)
2. [GS4 23P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-23P0_cutsheet.pdf) (accessed 2026-10-26)

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