# AutomationDirect GS23-51P0

Hardware · `GS23-51P0` · verification: source checked

The GS23-51P0 is an enclosed DURApulse GS20 series AC general-purpose variable frequency drive from AutomationDirect. It operates from a 575 VAC three-phase input and provides 1 hp, with SVC, V/Hz, FOC, or torque control modes. It includes RS-485 and USB B ports, integrated dynamic braking, and built-in Safe Torque Off (STO).

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 575 VAC |
| Rated power | 0.745699872 kW |
| Rated current | 1.7 A |
| Frame size | A5 |
| 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.
- UL Listed File # E198015.
- CE marked; RoHS compliant.
- Operating temperature range is -20 to +50 °C.

## Study notes

- Control modes: SVC, V/Hz, FOC or torque.
- Input and output are both three-phase at 575 VAC.
- Amperage rating 1.7 A; variable torque amperage rating 2.1 A.
- Communication ports: one RS-485 (RJ45) and one USB B; port speed up to 115.2k baud.
- Port protocols: Modbus RTU Slave and Modbus ASCII Slave.
- Optional EtherNet/IP and Modbus TCP card available.
- Integrated dynamic braking; no integrated EMI filter.
- I/O: 7 discrete inputs, 3 discrete outputs, 2 analog inputs, 1 analog output.
- Carrier frequency range 2–15 kHz; output frequency range 0.1–599 Hz.
- Programming language: ladder; connector type: spring clamp terminals.
- For use with 3-phase induction and permanent magnet AC motors.
- Mounting: panel or wall; enclosure type: enclosed; frame size A5.

## Sources

1. [DURApulse AC General Purpose Drive: 575 VAC, 1hp with 3-phase input, (VFD) (PN# GS23-51P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs23-51p0) (accessed 2026-10-26)
2. [GS23 51P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS23-51P0_cutsheet.pdf) (accessed 2026-10-26)

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