Stepper motor driver delivers high torque
Servo2Go.com offers the Stac5 step motor driver from Applied Motion Products. The Stac5 provides up to 5 amps per phase from a high bus voltage with current control, delivering high torque over a board range of speeds. An advanced anti-resonance algorithm with electronic damping allegedly allows for maximum torque utilization and fast settling times.
The stepper motor driver is available in 120 V ac and 220 V ac versions, both housed in a compact package. All models include 100Mbit Ethernet communication. The Ethernet interface is used to configure the Stac5 and motor, and also supports the SCL and Q languages over standard Ethernet cabling, addressing and protocols.
The "S" models accept step and direction, analog input, joystick control, and streaming host commands using the SCL language. "S" models include four digital inputs, a 12-bit analog input, and two digital outputs. "Q" models add standalone programmable operation using the Q programming language. This versatile language includes high-level features such as complex motion, multi-tasking, conditional programming, math functions, register access, and more. The "Q" models include 12 digital inputs, a 12 bit analog input, and six digital outputs.
An encoder feedback option provides position verification, stall detection and/or stall prevention. Applied Motion’s proprietary stall prevention algorithm monitors rotor lag and automatically reduces speed or acceleration to avoid motor stalls, allowing 100% torque utilization.
The Stac5 can be purchased with a wide range of high torque NEMA 23 and NEMA 34 step motors with holding torque ranging from 84 to 1700 ounce-inches.
Applied Motion Products
– Edited by Gust Gianos, Control Engineering, www.controleng.com