Anaheim Brushless DC MDC050050051 Brushless DC Controller Users Guide

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MDC050-050051 Series
50V, 5A Brushless Controller
User’s Guide
910 East Orangefair Lane, Anaheim, CA 92801
e-mail: [email protected](714) 992-6990  fax: (714) 992-0471
website: www.anaheimautomation.com
ANAHEIM AUTOMATION 
						

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MDC050-050051 Driver Features
•  Open Loop Operation
•  1.5V to 4V External Voltage Speed Control
•  5V/10KHz External PWM Speed Control
• 2-Quadrant Operation
•  Hall Sensor Feedback
•  Short Circuit Protection
•  Maximum Current Limit at 5.0 Amps (peak)
•  Run/Stop, Freewheel and Direction Input
•  TTL-CMOS Compatible Inputs
• Compact Size
•  Screw Type Terminal Block
General Description
The MDC050-050051 driver is designed to drive DC Brushless motors at currents of up to 5A (peak) 
and 50V.  The driver operates in the basic open loop confi guration with either 60° or 120° DC Brush-
less motors.  The driver is protected against over current (cycle-by-cyle), hall sensor error and under 
voltage.  When an error occurs, a fault light is turned on to notify the user.  Included on the driver 
is an internal potentiometer to control the maximum phase current allowed into the motor and an 
internal potentiometer to control the speed of the motor.  An optional external voltage (1.5-4VDC) or 
external 5V/10KHz PWM signal can be used to control the speed as well.  The direction of the motor 
can be preset by the direction control input.  Other inputs to the drive include a run/stop and a motor 
freewheel input.  The freewheel input overrides all other inputs into the driver.
Fault Protection
A cycle-by-cycle over current protection is provided when the motor current level exceeding the current 
limit set by adjusting R28 is produced.  When the over current protection is activated, the controller 
shuts off the outputs to the motor.  The maximum current set by R28 is a 5A per phase.
Suggested Power Supplies
Part # Description
PSAM24V2.7A DC Power Supply 24VDC at 2.7 Amps
PSAM48V1.3A DC Power Supply 48VDC at 1.3 Amps 
						

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Specifi cations
Control Inputs: (TB1, Pins 1-3)
TTL-CMOS Compatible
Logic “0” = 0-0.8VDC
Logic “1” = OPEN
All Three inputs (run/stop, freewheel, and direction) are pulled up through 10k Ohm resistors.
Direction Control: (TB1, Pin 1)
Logic “1” (open) - Clockwise
Logic “0” - Counterclockwise
Freewheel: (TB1, Pin 2)
Logic “1” (open) - Motor is Enabled
Logic “0” - Motor is de-energized and will coast to a stop
Run/Stop: (TB1, Pin 3)
Logic “1” (open) - Motor will not run
Logic “0” - Motor will run and will accelerate according to speed setting
Vcontrol: (TB1, Pin 4)
To control the speed of the motor with an external DC voltage, a voltage from 1.5VDC-4VDC, 
must be applied with reference to AGND (TB1, Pin 5).  Or, to control the speed of the motor with 
an external 5V/10KHz PWM signal, a duty cycle from 30% - 90%, must be applied with reference 
to AGND (TB1, Pin 5).
Care must be taken not to exceed 6V on this pin.
Output Current Rating:
5.0 amperes per phase maximum operating peak current, set by R28
2.5 amperes per phase maximum operating continuous current
Power Requirements: (TB2, Pins 4 and 5)
20VDC (min) - 50VDC (max)
Operating Temperature:
0° - 70°C
Heating Considerations:
The temperature of the driver transistors should never be allowed to rise above 70° Celsius.  If 
necessary, air should be blown across the driver to maintain suitable temperatures. 
						

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Freewheel
The motor freewheel feature allows the de-energized of the motor phases.  A high (open) input at 
this input causes the motor to run at the given speed, while a low at this input causes the motor to 
coast to a stop.
Motor Run/Stop
The motor run/stop feature allows the stopping of a motor by shorting out the bottom drives of the 
three phases.  A low at this input allows the motor to run, while a high (open) input does not allow 
motor operation and if operating causes rapid deceleration.
Speed Adjust Setting
There are three ways to set the speed on this DC Brushless Motor Driver.
1.  One is to use an external voltage by setting JP2 to position 2-3.  If a voltage is used to control 
the speed of the motor, the 1.5V to 4V voltage can be tied on Vcontrol (TB1 - pin 4) with respect 
to AGND (TB1- Pin 5).
2.  Another is to use external 5V/10Khz signal by setting JP2 to position 2-3.  If a voltage is used to 
control the speed of the motor, the 30% to 90% duty cycle can be tied on Vcontrol (TB1- pin 4) 
with respect to AGND (TB1 - pin 5).
3.  Another is to use the internal potentiometer, R18, by setting JP2 to position 1-2.
The maximum voltage amplitude that can be place on Vcontrol (TB1 - Pin 4) 6V.  A voltage exceeding 
6V will cause damage to the driver. 
						

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Terminal Block and Jumper Descriptions
Pin # Description
1 Direction Freewheel
2 Freewheel
3 Run/Stop
4 Vcontrol
5 GND
6 Hall Power
7 Hall A
8 Hall B
9 Hall C
10 Hall GND
Pin # Description
1 Direction Freewheel
2 Freewheel
3 Run/Stop
4 Vcontrol
5 GND
Function JP1 JP2
60° Hall Sensor Spacing Open ---
120° Hall Sensor Spacing 1-2 ---
Internal Speed Control 
(R13)--- 1-2
External Speed Control 
(Vcontrol)--- 2-3
TB1: Control Inputs and 
Motor HallsTB2: Power In and Motor 
PhasesJP1 and JP2: Functions 
and Settings
Typical Wiring Diagram
Dimensions 
						

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ANAHEIM AUTOMATION
COPYRIGHT 
Copyright 2012 by Anaheim Automation. All rights reserved. No part of this publication may be reproduced, 
transmitted, transcribed, stored in a retrieval system, or translated into any language, in any form or by 
any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior 
written permission of Anaheim Automation, 910 E. Orangefair Lane, Anaheim, CA 92801. 
DISCLAIMER
Though every effort has been made to supply complete and accurate information in this manual, the 
contents are subject to change without notice or obligation to inform the buyer. In no event will Anaheim 
Automation be liable for direct, indirect, special, incidental, or consequential damages arising out 
of the use or inability to use the product or documentation.  
Anaheim Automation’s general policy does not recommend the use of its’ products in life support applications 
wherein a failure or malfunction of the product may directly threaten life or injury.  Per Anaheim Automation’s 
Terms and Conditions, the user of Anaheim Automation products in life support applications assumes all 
risks of such use and indemnifi es Anaheim Automation against all damages.
LIMITED WARRANTY
All Anaheim Automation products are warranted against defects in workmanship, materials and construction, 
when used under Normal Operating Conditions and when used in accordance with specifi cations.  This 
warranty shall be in effect for a period of twelve months from the date of purchase or eighteen months 
from the date of manufacture, whichever comes fi rst. Warranty provisions may be voided if products 
are subjected to physical modifi cations, damage, abuse, or misuse.
Anaheim Automation will repair or replace at its’ option, any product which has been found to be defective 
and is within the warranty period, provided that the item is shipped freight prepaid, with previous authorization 
(RMA#) to Anaheim Automation’s plant in Anaheim, California. 
TECHNICAL SUPPORT
If you should require technical support or if you have problems using any of the equipment covered by this 
manual, please read the manual completely to see if it will answer the questions you have. If you need 
assistance beyond what this manual can provide, contact your Local Distributor where you purchased the 
unit, or contact the factory direct.
Torque Speed Curves
0 1 2 3
3000 3500
4000 4500 5000
5500
6000
0246810121416
Current (Amp)
RPM
Torque (oz-in)
BLY172S-24V-4000 with MDC050-050051, 24VDC 
Torq ue-Speed
Torque-Current
0 1.53 4.5
3000 3200
3400 3600 3800
4000
4200
4400
0 102030405060
Current (Amp)
RPM
T orque (oz-in)
BLY341D-48V-3200 with MDC050-050051, 48VDC 
Torq ue-Speed
Torque-Current