English 
Product Introduction
RS-485 ST68D is our new ModBus standard RS485 bus open loop stepper driver, which adopts the latest 32-bit DSP digital processing technology.The user can set any ID address within 1-255 and any current value in the rated current to meet the application needs in most occasions. The driver integrates the parameter auto-tuning function, which can automatically generate optimal operating parameters for different motors to maximize the performance of the motor.
Highlight Features
1. Support CiA301/402 communication protocols
2. Drive 2 phase open loop stepper motor and 3 phase open loop stepper motor
3. 1 analogy input(0~5V DC)
4.Max 50VDC voltage input
5.Max 8.0A output current
6.High compatibility with most popular MODBUS/RS485 master controllers
7.Perfect performance
8.Economic Price
Basic Technicial Indexes
| Model | Series | Type | Control type | Supported Protocols | Operation model | Phase | Supply Voltage | Output Current(A) | Digial of Inputs | Digial of Outputs | Analog input | Matched motor |
| RS-485 ST68D | RS-485 | Stepper | RS485 | MODBUS-RTU | PP.PV,HM | 2/3 | 2-50VDC | 8 | 5 | 4 | 1 input(0--5vdc) | Nema17,23,24,34 stepper motor |
Electrical Indicators
Item | RS-485 | |||
Min | Typical | Max | Unit | |
Output Current(Peak) | 0.1 | - | 8.0 | A |
Input Voltage（DC） | 15 | 36 | 50 | VDC |
Control Signal Input current | 6 | 10 | 16 | mA |
Control signal Interface Electric | 4.5 | 5 | 28 | Vdc |
OC output pull-up voltage | 5 | - | 24 | Vdc |
RS48 Communication Frequency | 1 | 1000 | KHz | |
Analogy Voltage Input | 0 | 5 | Vdc | |
Insulation Resistor | 100 | MΩ | ||
Using Manual Link
RS485 open loop stepper drive manual
Dimension(mm)
Recommendation
2 phase open loop stepper motor
3 phase open loop stepper motor