• Servo Systems Co.

Applied Motion Products STAC6-S


The STAC6-S stepper drive is a powerful, two-phase, bipolar step motor drive for high-speed, high-torque applications. It employs sophisticated current control designed for optimal smoothness over a wide speed range. Anti-resonance, torque ripple smoothing, and microstepping work together to bring step motor performance to a new high. It operates on single-phase 120 VAC and outputs up to 6.0 A/phase (peak-of-sine) to the step motor. It features over-voltage, over-temperature, and over-current protection and is complemented by a specially matched set of low-loss NEMA 23 and NEMA 34 frame step motors.

The STAC6-S can operate in the following control modes: pulse & direction, velocity (oscillator), and streaming serial (SCL) commands. It is also recommended for use with Applied Motion’s SiNet Hub 444 and SiNet Hub 8 multi-axis motion hubs. For connecting to external devices such as limit switches, proximity or photoelectric sensors, PLC I/O, lamps, and other devices, the STAC6-S stepper drive comes with 7 digital inputs, 3 digital outputs, and 2 single-ended analog inputs (analog inputs can be wired together as 1 differential analog input).

The STAC6-S stepper drive comes with an RS-232 port for configuration and programming. It also provides an RS-485 port for streaming serial (SCL) and Q commands over serial networks with up to 32 axes. Each drive comes with an encoder feedback connector for applications that demand a higher level of position control than ordinary open-loop step motor systems can provide. Use our double-shaft step motors with incremental encoders and activate either Stall Detection or Stall Prevention in the drive. Stall Detection notifies the system as soon as the required torque is too great for the motor, which results in a loss of synchronization between the rotor and stator, also known as stalling. Stall Prevention automatically adjusts motor speed to maintain synchronization of the rotor to the stator under all conditions. This unique feature allows step motors to operate in a much broader range of applications than previously possible, such as torque-control. The Stall Prevention feature also performs static position maintenance, which maintains the position of the motor shaft when at rest. Additionally, the inclusion of the optional encoder allows the motor to be precisely homed to the index (marker) pulse.

The STAC6-S is UL Recognized (File No. E310506), CE approved, and RoHS compliant.

Features include:

  • Three pulse-based control modes: step & direction, A/B quadrature, CW/CCW pulse
  • Velocity (oscillator) control mode with sophisticated joystick operation
  • Streaming serial command mode (SCL) for commands sent from a host PC or PLC using RS-232 or RS- 485 serial communication
  • Multi-axis stored program mode (200 line capability) using SiNet Hub 8 or SiNet Hub 444
  • 7 digital inputs, 3 digital outputs, all optically isolated
  • 2 analog inputs, +/-10 volt range
  • Stall detection and prevention with encoder feedback
  • Advanced anti-resonance algorithm
  • Torque ripple smoothing
  • Microstepping to 51,200 steps/rev
  • Idle current reduction
  • RS-232 cable and all mating connectors included

For more information visit our support center


Part Number 5000-111
Supply Voltage 94-135 VAC
Supply Voltage Type AC
Control Modes •Step & Direction
•Velocity (Oscillator)
•Streaming Commands
•SiNet Hub Compatible
Output Current 0.5-6.0 A/phase
Communication Ports •RS-232
Encoder Feedback Yes
Step Resolution •Full
•Microstep Emulation
Idle Current Reduction 0-100%
Setup Method Software setup
Digital Inputs 7
Digital Outputs 3
Analog Inputs 1 differential or 2 single-ended
Dimensions 6.35 x 4.66 x 2.31 inches
Weight 32 oz
Operating Temperature Range 0 to 55 °C
Ambient Temperature Range 0 to 55 °C
Ambient Humidity 90% max, non-condensing
Status LEDs 1 red, 1 green
Circuit Protection •Short circuit