LCDA257S Closed – Loop Stepper Driver
User’s Manual
Installation
- Electrical indicators
Voltage input range : DC:20~50V (Recommended 36V or more)
Maximum output current:6A
Pulse form: pulse + direction, CW / CCW
Logic input current:10~20mA
Impulse response frequency:0~200KHZ
Insulation resistance:500M - Environmental indicators
Save the temperature:-20C°~80C°
Operating temperature:0C°~55C°
Use humidity:90%RH(No condensation)
Vibration frequency: Less than0.5G(4.9m/s?)10HZ~60HZ(Non-continuous operation) - Installation dimensions(unit mm)
Drive terminal description
Power terminal definition
| Serial number | symbol | Functional definition |
| 1 | A+ | Motor power line terminal wiring color See motor on the label
|
| 2 | A— | |
| 3 | B+ | |
| 4 | B- | |
| 5 | +VDC | DC power input terminal recommended DC 36V or more |
| 6 | GND |
Drive 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 |
| Pin | symbol | Description |
| 6 | ENA- | Enable input negative |
| 7 | ALM+ | Alarm output positive |
| 8 | ALM- | Alarm output negative |
Drive encoder terminal definition
| P i n | symbol | Colour | Description |
| 1 | EB+ | yellow | Encoder B signal is positive |
| 2 | EB- | green | Encoder B signal is negative |
| 3 | EA+ | black | Encoder A signal is positive |
| 4 | EA- | blue | Encoder A signal is negative |
| 5 | VCC | red | Encoder + 5V input |
| 6 | EGND | white | Encoder power ground |
Drive communication terminal definition
| pin | symbol | Remarks |
| 1 | NC | No definition |
| 2 | GND | Signal ground |
| 3 | TXD | RS232 Sending end |
| 4 | RXD | RS232 Receiving end |
| 5 | GND | Signal ground |
| 6 | +5V | Power is positive |
Drive and computer communication line connection
Control port wiring
Pic 2 Common anode wiring method Pic 3 Common cathode wiring method
Pic 4 Differential signal input and output signal connection
Note: When the control signal voltage VCC = 24V, the current limiting resistor R = 3K;
When the control signal voltage VCC = 5V, the current limiting resistor R = 0;
Control signal timing diagram
Note: Hold time delay Brake delay time
Three, DIP switch setting
This series of drive current for the automatic tuning, so do not need to manually set the current, DIP switch corresponding functions are as follows:
Set the drive subdivision (see details on the driver
SW1~SW4 : are shell subdivision table)
SW5 ;: Set the motor direction
SW6 : Current self-tuning mode switch
SW7 : Working mode selection
SWS : Pulse input form selection
SW9 : Pulse edge selection
Four. Parameter settings
Common parameters are shown in the table below:
| Parameter number | Parameter Description | Predetermined area | |
| PA_002 | Position loop low speed P | 1~32767 | |
| PA_003 | Position loop high speed P | 1~32767 | |
| PA_004 | Sped loop low speed P | 1~32767 | |
| PA_005 | Speed loop high speed P | 1~32767 | |
| PA_006 | Set the number of pulses per revolution | 200~ 32767 | |
| PA_008 | Position error limit | 10~32767 | |
| PA_013 | Rated current percentage | 1~100 | |
| PA_015 | Input filter switch | 0~1 | |
| PA_016 | Input filter time | 0~ 32767 | |
| PA_017 | Enable level selection | 0~1 | |
| PA_018 | Faulty state selection | 0~1 | |
| PA 020 | Pulse mode selection | 0~65536 | |
| PA_021 | Restore factory parameters | 0~1 | |
| PA_028 | Percentage of open loop torque | 0~ 100 | |
| PA_029 | Speed loop denounce time | 0~65536 | |
| PA_030 | Speed loop integral | 1~100 |
Documents / Resources
 | katranji LCDA257S Closed - Loop Stepper Driver [pdf] User Manual LCDA257S Closed - Loop Stepper Driver, LCDA257S, Closed - Loop Stepper Driver, Loop Stepper Driver, Stepper Driver, Driver |
