Motor Driver: 9V-42V DC power supply, H bridge bipolar constant phase flow drive. The maximum 4.0A of the eight kinds of output current.Motor Driver: Energy-saving semi-automatic current lock function, built-in temperature protection and over current protection.The largest 32 subdivision of the 6 models are optional.Stepper Motor: 40Ncm holding torque; Rated current 1.7A and resistance 1.5ohms; 1.8 deg. step angle; bipolar 4-wire.Tips:Please make sure the motor connect to a constant current or chopper drive controller before you test motor.Connecting the motor directly to a power supply will destroy the motor.Only the clock pulse signal can be driven two-phase bipolar stepper motor to achieve low vibration, high efficiency work.TB6600 Stepper Motor Driver:Single chip bipolar sine microstep stepper motor driver.New BiCD 0.13 nm process.Up to 42V.5 subdivision mode options(1/1,1/2,1/4,1/8,1/16,1/32).Output current:IOUT=4.0A(peak,in 100ms).rated output:IOUT=3.5 AResistance(a+)=0.4Alarm output pin current:Ialert=1mAMonitoring output pin(MO):Imo=1mABreak through the traditional,single power supply.Built in overheating protection(TSD)circuit.Undervoltage protection,built-in(UVLO)circuit.Built-in overcurrent detection(ISD),circuit.Can control 2 phase stepper motor forward and reverse rotation,With 1-2,W1 -2,2W1 -2,4W1 -2 phase excitation mode.Nema 17 Stepper Motor:Motor type:Bipolar StepperPhase Resistance:1.5OhmPhase Inductance:2.8mHDetent Torque:2.2N.cmRotor Inertia:54g.cm2Holding Torque:40N.cmStep angle:1.8 degMotor Weight:280gStep angle accuracy:+ -5%(full step,not load)Resistance accuracy:+ -10%Inductance accuracy:+ -20%Temperature rise:80deg Max(rated current,2 phase on)Ambient temperature:-20deg-+50degInsulation resistance:100M Min,500VDCInsultion Strength:500VAC for on