BD-3H Step Motor Driver Amplifier

I. Introduction on Performance

Hybrid step motor is made of rare earth permanent magnet, it has a lower electromagnetic loss, higher conversion frequency and better dynamic feature, etc. comparing with reaction step motor. When a hybrid motor runs, it is relatively steady, with low noise and high output torque. To replace reaction motor by hybrid step motor is the development trend for economical CNC system.

KND-BD3H 3-phase servo hybrid step motor driver has the following features:

1. Employing AC servo control, for control way it has added fully digital current loop control and 3-phase sine current drive output, which makes the 3-phase hybrid motor free from creepage, resonance and low noise at low speed.

2. The voltage of the power amplifier of the driver is up to DC325V, the step motor has hi-torque output even when it runs at hi speed.

3. It is provided with perfect protection such as short circuit, overvoltage, under voltage and overheat, etc., so it is highly reliable.

4. It is of division and half current function. It is of several division selections, the least stepping angle can be set as 0.03°.

5. Widely applicable, by setting different phase currents, it can be configured with different motors.

II. Technical Electric Parameters

Input power	AC220V -15%～+10% 50/60HZ 5.5A（MAX）
Output phase current	1.7A ~ 6.8A
Adaptive motor	3-phase hybrid step motor
Working environment	0℃～50℃ 15～85%RH, no dewing. Free of corrosion, inflammable, explosive and electricity conductive gas, liquid and dust.
Storage environment	-25℃～70℃ 15～85%RH, no dewing.
Driving way	PWM (pulse width modulation) constant current chopping, 3-phase sine wave current output.
Stepping angle	0.03°	0.036°	0.045°	0.06°	0.072°	0.09°	0.12°	0.18°
Pulse per revolution of motor	12000	10000	8000	6000	5000	4000	3000	2000
Setting of stepping angle	DIP switch (SW1－3, 5, 6) setting
Input signal	CP+/CP-；DIR+/DIR-
Input level	5V, 5～10mA, connect in serial 1k resistance at 12V, and 2.2k resistance at 24V. The input is active when it has current in the input circuit.
Position pulse input way	Single pulse way: CP (pulse) + DIR (direction) Pulse width ≥2.5µs; pulse frequency ≤200KHZ (at 10000P/r)
Output signal	RDY1/RDY2 (Ready): N. O. contact, becomes ON when there is no alarm, load 30V, 0.5A(MAX).
Status indication	Green LED RDY: normal indication, lit up at trouble free state; Red LED ALMT: failure; ALM2: overheat; ALM3: over voltage; ALM4: under voltage
Outline dimension	213×112×145mm (refer to outline dimension)
Weight	3Kg