Manual
ROBOT.HEAD to TOE 
Product User’s Manual - MDDS30 
Created by Cytron Technologies Sdn Bhd – All Rights Reserved 
Back to INDEX  11 
7. SAFETY FEATURES 
SmartDriveDuo-30 incorporates  some safety features  which make  it robust and reliable 
motor driver. Below are the detailed descriptions for each feature. 
1.  Input Error (Error LED blinks 2 times) 
Every time SmartDriveDuo-30 is power up, the input data must be ‘stop’ (for RC, Analog, 
PWM input mode). This feature prevent the driver from sudden run, especially when the 
driver accidently reset. 
2.  Under Voltage Warning (Error LED blinks 3 times) 
Upon power on, SmartDriveDuo-30 will automatically detect the number of cells for the 
battery. If  it is  set to LiPo, when  the input  voltage falls  below  3.0V per cell  during 
operation, the error LED will blink to warn the user. However, the power to the motor 
will  be  maintained  and  will  not  be  cut  out.  Thus,  it  is  user’s responsibility  to  stop  the 
motor driving and replace battery to avoid further damage to the battery. If other types 
of battery is used to power the board (e.g NiMH, NiCD, SLA), the under voltage warning 
will still  be shown. In  this case,  user may ignore the warning and he/she  needs to 
estimate when to replace the battery by him/herself. 
3.  Over Voltage Protection (Error LED blinks 4 times) 
If over voltage is detected (> 35V), SmartDriveDuo-30 will not operate. 
4.  Over Temperature Protection (Error LED blinks 5 times) 
SmartDriveDuo-30  is  equipped  with  a  temperature  sensor  to  monitor  its  operating 
temperature.  It  will  gradually  lower  down  the  duty  cycle  percentage  base  on  the 
temperature as shown below: 
TEMPERATURE (°C) 
MAX CURRENT (A) 
< 50 
80 
50 - 70 
50 
70 - 100 
40 
> 100 
30 
WARNING! 
MDDS30 does not come with POLARITY PROTECTION, please double check the connection 
before powering up. 










