PMP AUTOMATION PVT. LTD.
TML-STEPR-23 STEPPER DRIVE , 120W
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ML-STEPR-23 is a low cost Bipolar stepper drive. ML-STEPR-23 provides efficient and smooth operation. It delivers 40V/ 3A of power to the Motor.

The 22 KHz Chopper frequency allows the drivers to be used with motors having short electrical time constants. The high chopping rate results in minimal current ripple. The motor speed can be set sing 10k Ohm multiturn potentiometer which is located close to the DIP switchs. Through onboard DIP switches we can select full or half step. 8 levels of current adjustment can be done through DIP switches. With its internal oscillator, standalone operation and inching becomes easier. Opto Isolated open collector output is provided for external RPM indication or speed reference.

FEATURES :
1. Microcontroller based design.
2. Max 3A phase current.
3. Power supply
        - 12V - 30V AC power supply
        - 15V - 40V DC power supply
4. Maximum Clock Frequency 12KHz in half step mode
5. Auto and Manual modes of operation.
6. Opto isolated inputs for Direction and Enable.
7. 22KHz Clock PWM Frequency.
8. 0 - 60 0C operating temperature.
9. LED indication for :
         - Power supply voltage supervision.
         - Fault Indication.
10. Stand alone operation with built in clock generation.
11. Built in internal Oscillator automode operation.
12. Built in protection for :
         - Over / Under Voltage.
         - Over Current.
         - Short circuit.
         - OverTemperature.

Connector Diagram & Technical Specification :



Electrical Specification : 
Motor Supply Voltage AC : 12 - 30 V DC : 15 - 40 V
External Logic Input Level Low : 0 - 0.7 V High : 5 - 12 V
Maximum Phase Current 3 Amps
Peak Current 5 Amps
Maximum Clock Frequency 12 KHz in Half Step mode
Chopping Frequency 22 Khz
Operating Temperature 0 - 60 °C
Storage Temperature 0 - 80 °C
Mechanical Specification : 
Cover Aluminium, anodized
Plate Aluminium, hard anodized
Length 120 mm
Width 68 mm
Height 45 mm
Temperature 0 - 80° C

APPLICATION :
1. Industrial Automation
2. Office Automation
3. Telecommunication
4. Diamond Cutting
5. Printing Machines
6. Medical Equipments
7. Machine Tools
8. Machine for Wood working
9. Textile Application
10. Spot Lights
11. Machines for food and farm Industries

Current Selection : 
Current
(in Amps)		 2 3 4
0
 0 0 0
0.8
 1 0 0
1.7
 0 1 0
1.9
 1 1 0
2.4
 0 0 1
2.6
 1 0 1
2.8
 0 1 1
3.0
 1 1 1
Step Selection :  
The steps supported by ML-STEPR-23 Intelligent stepper drive is :
STEP 1
FULL STEP
 1
HALF STEP
 0

NOTE :
When drive is in Auto mode, it runs on internal oscillator and speed can set using on board potentiometer. On enabling the drive, Motor runs from low RPM to max set RPM with a soft start. When Auto/Manual input is connected to a supply (5 -12V DC), the driver is in manual mode. For the motor to run in this mode external clocking is required which determine the speed of the drive depending on the step selection and step angle of the motor. Minimum ON time of clock is 50 micro sec. In auto mode drive automatically runs with selected speed and current continously. 10Amps rated screw type connectors for AC inputs and Motor, 5Amps rated screw type connectors for all other external inputs.

CONTACT US :
PMP AUTOMATION PVT. LTD.
1025 AB Sadashiv Peth,
207, Vishal Apts.,
Pune 411030.
INDIA.
Telefax : 020 – 24478375 / 24473787 Fax : 020 –24465064
Email : pmpelec@vsnl.com