User Manual DM320T 2-Phase Digital Stepper Drive #7 Zhongke Road, Jiangning, Nanjing, China T: 0086-2587156578 Web site: www.omc-stepperonline.com E-Mail: sales@stepperonline.
Digital Stepper Drive DM320T Table of Contents 1. Introductions.................................................................................................................................................................... 1 1.1 Features.................................................................................................................................................................. 1 1.2 Applications........................................................................................
Digital Stepper Drive DM320T 1. Introductions The DM320T is a digital stepper drive with simple design and easy setup. By implementing advanced stepper control technology, this stepper drive is able to power 2-phase and 4 phase stepper motors smoothly with optimal torque and low motor heating & noise. Its operating voltage is 18-30VDC and it can output up to 2.2A current. All the micro step and output current are done via DIP switches.
Digital Stepper Drive DM320T 2.2 Environment Cooling Natural Cooling or Forced cooling Avoid dust, oil fog and corrosive gases Environment Operating Environment Ambient Temperature 0°C － 65°C (32°F - 149°F) Humidity 40%RH－90%RH Operating Temperature 0°C － 50°C (32°F - 122°F) Vibration 10-50Hz / 0.15mm Storage Temperature -20°C － 65°C (-4°F - 149°F) Weight Approx. 90g (3.5 oz) 2.3 Mechanical Specifications (unit: mm [1inch=25.
Digital Stepper Drive DM320T 3. Connection Pin Assignments and LED Indication The DM320T has two connector blocks P1&P2 (see above picture). P1 is for control signals connections, and P2 is for power and motor connections. The following tables are brief descriptions of the two connectors. More detailed descriptions of the pins and related issues are presented in section 4, 5, 9. 3.
Digital Stepper Drive DM320T ! Warning Warning: Don’t plug or unplug the P1 & P2 terminal block to avoid drive damage or injury when DM320T is powered on. 3.3 LED Light Indication There are two LED lights for DM320T. The GREEN one is the power indicator which will be always on generally. The RED one is a protection indicator which will flash 1-2 times in a 3-second period, when protection enabled for a DM320T. Different number of flashes indicates different protection type (read section 11 for detail).
Digital Stepper Drive DM320T 5. Motor Connection The DM320T can drive 2-phase and 4-pahse bipolar hybrid stepper motors with 4, 6, or 8 wires. 5.1 Connections of 4-lead Motor The 4 lead motors are the least flexible and easy to connect. And the Speed – torque of motor depends on winding inductance. The output current from drive that is multiply the specified phase current by 1.4 to determine the peak output current. Figure 4: 4-lead Motor Connections 5.
Digital Stepper Drive DM320T Figure 6: 6-lead motor full coil (higher torque) connections 5.3 Connections of 8-lead Motor 8 lead motors offer a high degree of flexibility to the system designer in that they may be connected in series or parallel, thus satisfying a wide range of applications. 5.3.1 Series Connection A series motor configuration would typically be used in applications where a higher torque at lower speed is required.
Digital Stepper Drive DM320T driven motor (particularly at lower speed). Higher supply voltage will allow higher motor speed to be achieved, at the price of more noise and heating. If the motion speed requirement is low, it’s better to use lower supply voltage to decrease noise, heating and improve reliability. 6.1 Regulated or Unregulated Power Supply Both regulated and unregulated power supplies can be used to supply the drive.
Digital Stepper Drive DM320T Microstep Steps/rev.(for 1.8°motor) SW4 SW5 SW6 2 400 ON ON ON 4 800 OFF ON ON 8 1600 ON OFF ON 16 3200 OFF OFF ON 32 6400 ON ON OFF 64 12800 OFF ON OFF 20 4000 ON OFF OFF 40 8000 OFF OFF OFF 7.2 Current Configurations For a given motor, higher drive current will make the motor to output more torque, but at the same time causes more heating in the motor and drive.
Digital Stepper Drive DM320T 8. Wiring Notes In order to improve anti-interference performance of the drive, it is recommended to use twisted pair shield cable. To prevent noise incurred in PUL/DIR signal, pulse/direction signal wires and motor wires should not be tied up together. It is better to separate them by at least 10 cm, otherwise the disturbing signals generated by motor will easily disturb pulse direction signals, causing motor position error, system instability and other failures.
Digital Stepper Drive DM320T Figure 10: Sequence chart of control signals Remark: a) t1: ENA must be ahead of DIR by at least 5s. Usually, ENA+ and ENA- are NC (not connected). See “Connector P1 Configurations” for more information. b) c) d) t2: DIR must be ahead of PUL effective edge by 5s to ensure correct direction; t3: Pulse width not less than 7.5s; t4: Low level width not less than 7.5s. 11.
Digital Stepper Drive DM320T 12. Troubleshooting In the event that your drive doesn’t operate properly, the first step is to identify whether the problem is electrical or mechanical in nature. The next step is to isolate the system component that is causing the problem. As part of this process you may have to disconnect the individual components that make up your system and verify that they operate independently. It is important to document each step in the troubleshooting process.
