LCDA86X Two-Phase 86 Closed-Loop Stepper Driver

Product Overview

The LCDA86X uses the latest dedicated motor control DSP chip and vector closed-loop control technology, completely overcoming the problem of step loss in open-loop stepper motors. At the same time, it significantly improves the motor's high-speed performance, reduces motor heating, and decreases motor vibration, enhancing machine processing speed and precision while lowering machine energy consumption. This driver combines the dual advantages of stepper and servo motors, and its price is reduced by 50% compared to servo systems on the market, making it the best choice for customers upgrading their stepper solutions.

Features

Voltage input range: DC30V~100V / AC20V~70V Maximum peak current: 8A Subdivision range: 200~51200ppr Pulse form: Pulse + direction, CW/CCW (adjustable via software) Pulse response frequency: 0~150KHz Automatic motor parameter tuning function

Product Overview Supporting Products Data Download

Main Parameter Description

(1) Electrical Specifications

Parameter	LCDA86X
Parameter	Minimum Value	Typical Value	Maximum Value	Unit
Maximum Peak Current	-	-	8	A
Input Power Voltage	24	60	70	VDC or VAC
Logic Input Current	7	10	16	mA
Pulse Frequency	-	200	500	KHZ

Product Diagram

Driver Terminal Description

(1) Power Terminal Definition

Serial Number	Symbol	Function Definition
1	A+	Motor Power Line Terminal Wiring color see label on motor
2	A-
3	B+
4	B-
5	AC	Power Input Terminal AC: 20V~70V / DC: 30V~100V (no polarity)
6	AC

(2) Driver Control Terminal Definition

Pin	Symbol	Description
1	PUL+	Pulse Input Positive
2	PUL-	Pulse Input Negative
3	DIR+	Direction Input Positive
4	DIR-	Direction Input Negative
5	ENA+	Enable Input Positive
6	ENA-	Enable Input Negative
7	Pend+	Position Complete Positive
8	Pend-	Position Complete Negative
9	ALM+	Alarm Output Positive
10	ALM-	Alarm Output Negative

(3) Driver Encoder Terminal Definition

Pin	Symbol	Color	Description
1	EB+	Yellow	Encoder B Signal Positive
2	EB-	Green	Encoder B Signal Negative
3	EA+	Black	Encoder A Signal Positive
4	EA-	Blue	Encoder A Signal Negative
5	VCC	Red	Encoder +5V Input
6	EGND	White	Encoder Power Ground

(4) Driver Communication Terminal Definition

Driver to Computer Communication Cable Connection Method

Color	Computer Side (9-pin Female Connector)		Driver Side (6-pin RJ11 Connector)	Color
Blue	3 TXD	-----------------	4 RXD	Blue
Green	2 RXD	-----------------	3 TXD	Green
Orange White Brown	5 GND	-----------------	5 GND 2 GND	Orange White Brown

Microstep Subdivision Setting

Pulse / rev	SW1	SW2	SW3	SW4
Default	off	off	off	off
800	on	off	off	off
1600	off	on	off	off
3200	on	on	off	off
6400	off	off	on	off
12800	on	off	on	off
25600	off	on	on	off
51200	on	on	on	off
1000	off	off	off	on
2000	on	off	off	on
4000	off	on	off	on
5000	on	on	off	on
8000	off	off	on	on
10000	on	off	on	on
20000	off	on	on	on
40000	on	on	on	on

DIP Switch Setting
The current of this series of drivers is auto-tuned, so manual current setting is not required. The DIP switch functions are as follows:

SW1~SW4: Set driver subdivision (see subdivision table on driver casing for details)	SW5: Set motor direction
SW6: Switch driver open-loop/closed-loop working mode

Alarm Handling

Alarm Type	Fault Description	Fault Handling
Flashes once every 5 seconds	Overcurrent Alarm	1. Motor power line short circuit or motor fault; 2. Drive current loop parameter setting is too high; 3. If no errors are found in the above two points, it may be an internal fault of the drive, requiring factory inspection.
Flashes twice every 5 seconds	Overvoltage Alarm	1. Power supply voltage is too high or unstable, check if the transformer output voltage is normal; 2. Internal fault of the drive, requiring factory inspection.
Flashes three times every 5 secondsOr Flashes seven times every 5 seconds	Encoder Fault	1. Encoder wire is broken or has poor contact. 2. Drive encoder input circuit is damaged.
	Overload Alarm	Motor stall or excessive load.
	Position Deviation Too Large	1. Motor power line phase sequence reversed, check the sequence according to the label on the motor; 2. Loose, poor contact, or broken motor power line or encoder wire can cause this fault,If there is a spare cable, try replacing the cable; 3. PA_007 setting is too low causing the alarm, reset the parameter.

Main Application Areas

Suitable for automation equipment and instruments in various motion control fields, such as: electronic processing and inspection, semiconductor packaging, laser cutting and welding, laser typesetting, packaging machinery, engraving machines, marking machines, cutting machines, garment plotters, CNC machine tools, automated assembly equipment, etc.