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STRAC2 Hardware Manual
920-0118 Rev B
03/26/21
1 Introduction
Thank you for selecting the Applied Motion Products’ STRAC2 Step Motor Drive. The STRAC2 series AC input drives are based on
advanced digital current control technology and provide high torque, low noise and low vibration. Many of the operational paramteres
are switch selectable. We hope our dedication to performance, quality and economy will make your motion control project successful.
1.1 Features
• Advanced digital current control provides excellent high speed torque
• Auto Setup measures motor parameters and configures motor current control and anti-
resonance gain settings
• Uses universal AC input 90 to 240 VAC, AC Input Voltage must be selected by switch
• Speed Range - up to 50 rps
• Microstep Resolution - switch selectable, 16 settings: 200, 400, 800, 1600, 3200, 6400,
12800, 25600, 1000, 2000, 4000, 5000, 8000, 10000, 20000, 25000 steps/rev
• Running Current - peak setting, switch selectable, 8 settings: 0.6A, 0.8A, 1.0A, 1.2A, 1.6A,
1.8A, 2.0A, 2.5A.
• Idle Current - automatic reduction of running current 1 second after the motor stops, switch
selectable, 2 settings: 50%, 90% of running current
• Anti Resonance - raises the system-damping ratio to eliminate midrange instability and allow
stable operation throughout the speed range of the motor, switch selectable, 2 settings for low
to high inertia loads
• Control Modes - Step/Direction pulse input or CW/CCW pulse input, internal jumper switch
selectable
• Input Signal Filter - filters out unwanted noise that can cause extra steps, switch selectable,
2MHz or 150KHz
• Step Smoothing Filter (Microstep Emulation) - performs high resolution stepping by
synthesizing coarse steps into fine micro-steps, switch selectable, ON or OFF
• Self Test - performs a1 rev, 0.5RPS, CW/CCW move test, switch selectable, ON or OFF
• Motor Selection - a 16 bit rotary switch is used to select the desired motor database which is
pre-loaded at the Factory
