3 phase step motor driver

1)3 phase step motor driver 2)low noise 3)low heat 4)CE

step motor driverDescription of 3 phase step motor driver 

PSD78AC-3P/3 phase step motor driver

 Key Features: 

  AC80 to 220V Supply Voltage   H-Bridge, 3 Phase Bi-polar Micro-stepping Drive   Suitable for 3-phase, step motors, with Nema size 23 to 42   Output current selectable from 1.8 ~ 7.8A peak   Current reduction by 50% automatically, when motor standstill mode is enabled   Pulse Input frequency up to 200 kHz   Optically isolated  differential TTL inputs for Pulse, Direction and Enable  signal inputs   Selectable resolutions up to 12800   steps    Over Voltage, Coil to Coil and Coil to Ground short circuit protection.

Introduction

The  PSD78AC-3P is one of the few Direct-On-Line Step Motor Drive, available in the industry, which can be simply power up from the AC power source without the need of a Power Supply.  This makes it cost effective and space efficient.

PSD78AC-3P  is a bi-polar three phase micro-stepping drive applying pure-sinusoidal current control technique.  It had the potential of delivering more torque with smoother stepping motion with a three phase motor. This results in lower vibration and higher performance as compared to the two phase type.   It is best suited for applications that desire extreme low speed smooth motion, especially in multi-axes linear and circular interpolated application, or application that is sensitive to vibration, at extreme slow speed.

The higher voltage input of the PSD78AC-3P make it possible to excite a three phase bi-polar hybrid step motor, with size from Nema 23 up to Nema 42.   

With precise current control technique and optimization in speed control, this three phase PowerStep drive is well suited for three phase hybrid step motor, producing a performance close to a brushless DC servo operation.

Current Setting :

Current Setting (A)	SW1	SW2	SW3
1.8	OFF	OFF	OFF
2.5	ON	OFF	OFF
3.5	OFF	ON	OFF
4.3	ON	ON	OFF
5.2	OFF	OFF	ON
6.0	ON	OFF	ON
7.0	OFF	ON	ON
7.9	ON	ON	ON

Microstep  Setting

Step / Rev	SW5	SW6	SW7	SW8
200	OFF	OFF	OFF	OFF
400	ON	OFF	OFF	OFF
500	OFF	ON	OFF	OFF
800	ON	ON	OFF	OFF
1000	OFF	OFF	ON	OFF
1250	ON	OFF	ON	OFF
1600	OFF	ON	ON	OFF
2000	ON	ON	ON	OFF
2500	OFF	OFF	OFF	ON
3200	ON	OFF	OFF	ON
4000	OFF	ON	OFF	ON
5000	ON	ON	OFF	ON
6400	OFF	OFF	ON	ON
8000	ON	OFF	ON	ON
10000	OFF	ON	ON	ON
12800	ON	ON	ON	ON

3 phase step motor driver