OL57-R Bus Open-Loop Stepper Driver

Product Overview

The OL57-R stepper driver adopts the new generation 32-bit DSP technology, combined with RS485 bus control function, supports MODBUS-RTU communication protocol, can connect up to 32 axes, and can achieve multi-axis bus synchronous control. The driver features 15 internal position segments and 15 internal speed segments, supports automatic homing, absolute/relative positioning, JOG, and other functions. It can be directly controlled using a touchscreen or a controller with an RS485 interface.

Features

Voltage input range: DC24V to 50V Maximum peak current: 5A Communication interface: RS485 Communication protocol: Modbus RTU Automatic motor parameter tuning function Features overvoltage, overcurrent, and other protection functions

Product Overview Supporting Products Data Download

Driver Function Description

Driver Functions	Operating Instructions
Station Number Setting	The driver communication station number is set by five DIP switches SW1-SW5, supporting up to 31 slave stations. In actual use, the driver should be stopped first. Please set the slave address according to the table on the driver panel.
RS485IN/OUT	RS485 communication interface, supports standard Modbus-RTU bus communication protocol.
Baud Rate Setting	The driver communication baud rate is set by two DIP switches SW6~SW7, with a setting range of 9600~115200 in 4 levels. In actual use, the driver should be stopped first. Please set the communication baud rate according to the table on the driver panel. SW8 is the terminal resistor.
Indicator Lights	The driver has two indicator lights: red and green. The green light is the power indicator, which stays on when the driver is powered. The red light is the fault indicator, which stays on when overvoltage or overcurrent faults occur. The red light turns off after the fault is cleared. When a fault occurs, only power cycling and re-enabling can clear the fault.
DI/DO Signal Interface	DI0~DI6 are single-ended input ports, DICOM is the common terminal for inputs; DO0~DO2 are single-ended output ports, DOCOM is the common terminal for outputs. Corresponding command values can be configured as needed to use the functions associated with these command values. Please refer to the driver manual for specific settings.
Motor Interface	A+ and A- connect to the positive and negative terminals of the stepper motor A-phase winding; B+ and B- connect to the positive and negative terminals of the stepper motor B-phase winding. Swapping the + and - terminals of phase A or B can reverse the motor rotation direction.
Power Interface	Powered by DC power supply, recommended operating voltage range is 24V-50VDC, with a recommended operating voltage of 36VDC and power greater than 100W.
Installation Instructions	The driver dimensions are 134×83×33mm, with mounting hole spacing of 128mm. It can be installed horizontally or vertically (vertical installation is recommended). During installation, it should be mounted tightly against a metal cabinet to facilitate heat dissipation.

Product Diagram

Parameter Settings

The OL57-R driver supports RS485 bus, with 8 DIP switches available to set RS485 station number, communication baud rate, and terminal resistor, as shown in the table below:

Station Number Setting

Station Number	SW1	SW2	SW3	SW4	SW5	Station Number	SW1	SW2	SW3	SW4	SW5
Custom	off	off	off	off	off	16	off	off	off	off	on
1	on	off	off	off	off	17	on	off	off	off	on
2	off	on	off	off	off	18	off	on	off	off	on
3	on	on	off	off	off	19	on	on	off	off	on
4	off	off	on	off	off	20	off	off	on	off	on
5	on	off	on	off	off	21	on	off	on	off	on
6	off	on	on	off	off	22	off	on	on	off	on
7	on	on	on	off	off	23	on	on	on	off	on
8	off	off	off	on	off	24	off	off	off	on	on
9	on	off	off	on	off	25	on	off	off	on	on
10	off	on	off	on	off	26	off	on	off	on	on
11	on	on	off	on	off	27	on	on	off	on	on
12	off	off	on	on	off	28	off	off	on	on	on
13	on	off	on	on	off	29	on	off	on	on	on
14	off	on	on	on	off	30	off	on	on	on	on
15	on	on	on	on	off	31	on	on	on	on	on

Baud Rate Setting

Baud Rate	9600	19200	38400	115200
SW6	on	off	on	off
SW7	on	on	off	off

Main Application Areas

Suitable for various motion control automation equipment and instruments, 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.

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