AutomationDirect: AC sensorless vector drives

The AutomationDirect DURApulse GS4 series of AC sensorless vector drives includes many of the same standard features as current GS drives including dynamic braking, PID, and removable keypad, as well as major enhancements.

AC sensorless vector drives
AC sensorless vector drives

GS4 drives are available up to 300 hp in 460 V models, up to 100 hp in 230 V models. All 230V models can operate in 3-phase or single phase configurations. GS4 drives have a 100 kA Short Circuit Current Rating (SCCR), a 50 deg. C operating temperature rating, and STO (Safe Torque Off) is built in.

Built-in I/O includes eight DC digital inputs, two DC digital outputs (up to 48 V), and five analog channels (3 inputs and 2 outputs) configurable for either voltage, current or potentiometer (input). The expansion I/O slot accepts any one of three I/O option cards (DC In/Out, Relay Out, AC Input).

GS4 drives support both Modbus RTU and BACnet (serial) protocols as standard. GS4 drives also accept an optional Modbus TCP or EtherNet/IP Ethernet card for fast network access at low cost.

The GS4 smart keypad with embedded Quick Start menu can be remotely mounted with a simple bezel kit and a standard Ethernet patch cable. The keypad can configure and store up to four complete sets of drive parameters for backup and recovery operations. Beyond initial drive setup, the keypad can be used for run/stop control of the motor and as a scalable speed or frequency display.

A fully functional PLC is built in to the GS4 drives, capable of up to 10k ladder logic steps for drive-related logic requirements. Drive and integral PLC programming/configuration is supported with individual free downloadable software packages. Advanced PLC features include real-time calendar/clock and full PID control.

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