# AutomationDirect GS33-2050

Hardware · `GS33-2050` · verification: source checked

The GS33-2050 is an enclosed DURApulse GS30 series AC variable frequency drive rated 50 hp on a 230 VAC three-phase input. It controls three-phase induction and permanent magnet AC motors using SVC, V/Hz, FOC, encoder or torque control modes, with a 0.1 to 599 Hz output frequency range and a 2 to 15 kHz carrier frequency. Setup, monitoring and embedded ladder logic programming are handled through RS-485 (Modbus RTU/ASCII slave) or USB B connections.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 230 VAC, 3-phase |
| Frame size | I |
| 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) function.
- User-supplied external fuse required.
- UL Listed File # E198015; RoHS status: Yes (see CE declaration).
- Operating temperature range -20 to +50 deg C.
- Meets IP20 enclosure rating only; not protected against water ingress.

## Study notes

- Rated 50 hp with 3-phase input; rated current 146 A, variable torque rating 160 A.
- Control modes: SVC, V/Hz, FOC, encoder or torque.
- Output frequency range 0.1-599 Hz; carrier frequency range 2-15 kHz.
- Communication: (1) RS-485 (RJ45) and (1) USB B port, up to 115.2k baud, Modbus RTU Slave and Modbus ASCII Slave.
- On-board I/O: 7 discrete inputs (24 VDC sinking/sourcing), 3 discrete outputs (relay/sinking/sourcing, one Form C SPDT relay), 2 analog inputs (12-bit), 1 analog output (10-bit).
- Analog input ranges 0-20 mA and 4-20 mA, +/-10 VDC; analog output ranges 0-20 mA and 4-20 mA, 0-10 VDC.
- Programming language: ladder (embedded drive PLC); configuration via GSOFT2 software, programming via GSLOGIC.
- External dynamic braking unit required; integrated EMI filter: no.
- Enclosure is IP20, frame size I, panel or wall mounting.
- Shipping weight stated as 94 lb; country of origin India.
- Optional communication, encoder and I/O modules available.
- Input signals: 4-20 mA, voltage, potentiometer or pulse train; output type PWM.

## Sources

1. [DURApulse AC High-performance Drive: 230 VAC, 50hp with 3-phase input, (VFD) (PN# GS33-2050) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs33-2050) (accessed 2026-10-26)
2. [GS33 2050 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS33-2050_cutsheet.pdf) (accessed 2026-10-26)

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