Anaheim Stepper MBC061281 Users Guide

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MBC061281
Bipolar Microstep Driver
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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MBC061281 Microstep Driver Features
•  Size 4.646L x1.400W x 3.400H
•  Output Current 5.6 Amps Peak
•  400 to 25,600 steps/rev
•  Over-Voltage, Under Voltage  and Short Circuit Protection
•  Selectable Stand StillCurrent Reduction
•  No Minimum Inductance
•  Optical Isolation
•  Motor ON/OFF input
Introduction
The MBC061281 Microstep Driver has an output current capability of 1.4 Amps minimum to 5.6 Amps
maximum (Peak Rating). The MBC061281 driver operates on a DC voltage of 20-50 Volts. The inputs are
optically isolated with a minimum sourcing of 15.0 mA per input @+5VDC. The clock input is set to receive
either positive or negative edge clocks with a maximum frequency of 400KHz. The MBC061281 driver
offers direction control and motor current ON/OFF capabilities. The Reduce Current Enabled automati-
cally reduces motor current to 60% of set value after the last step is made (1sec delay). The driver has
built-in features to indicate power on (Green LED) and fault conditions (Red LED).
With the MBC061281, various step resolutions can be implemented by the onboard dip switch. These
divisions range from 400 steps per revolution to 25,600 steps per revolution. The bipolar drive configuration
handles 4, 6 and 8 lead motors. Protection devices have been added to this driver for Short-Circuit, Motor
Mis-Wire, Over-Voltage and Under Voltage conditions.
Pin Descriptions
The inputs on the MBC061281 are optically isolated with the anode (+) and cathode (-) both brought out to
the user.  With no current going through the opto-diode, the input is considered high. To enable the input
a minimum of 7.0 mA needs to be sourced or sinked through the opto-diode. This is done simply by
placing a voltage of +5VDC across the two inputs of the opto-diode. If sourcing current into the inputs, then
all three cathodes (-) should be tied together and grounded as shown in Figure 2. If sinking current, then all
three anodes (+) should be tied together to the +voltage as shown in Figure 1.
Absolute Maximum Ratings
Power Input Voltage: 50 VDC
Output Current: 5.6 AMPS PEAK
Max Plate Temperature: 65° C
Storage Temperature: -20° to +65° C
Humidity: 90% RH
Signal Input Voltage:  +5.5V at 16mA
Electrical Specifications
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t n e r r u C t u p t u O e s a h P0 . 10. 4)S M R ( A
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e g a t l o V l a n g i S c i g o L5 . 355. 5CD V
t n e r r u C l a n g i S c i g o L73161Am
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h t d i W e s l u P w o L2 . 1ce S u
e r u t a r e p m e T n o i t a r e p O056C 
						

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# n i Pn o i t p i r c s e D
1: ) + ( e d o n A t u p n I k c o l C p e t Se n o r o t o m e h t s e c n a v d a t u p n i d e t a l o s i s i h t n o e g d e g n i o g e v i t i s o p A
. 1 h c t i w S f o s t u p n I t c e l e S p e t s o r c i M e h t n o t n e d n e p e d s i t n e m e r c n i e h t f o e z i s e h T . t n e m e r c n i
2)- ( e d o h t a C t u p n I k c o l C p e t S
3: ) + ( e d o n A n o i t c e r i Dn o i t c e r i d l a c i s y h P . r o t o m e h t f o n o i t c e r i d e h t e g n a h c o t d e s u s i t u p n i d e t a l o s i s i h T
. s g n i d n i w r o t o m e h t f o n o i t c e n n o c e h t n o s d n e p e d o s l a
4)- ( e d o h t a C n o i t c e r i D
1: ) + ( e d o n A F F O / N O. r e v i r d e h t f o n o i t c e s t u p t u o e h t e l b a s i d d n a e l b a n e o t d e s u s i t u p n i d e t a l o s i s i h T
. d e l b a n e e r a s t u p t u o e h t ) n e p o ( H G I H n e h W
2)- ( e d o h t a C F F O / N O
TB1 and TB2: 4 and 2 Pin Terminal Description
TB3: 6 Pin Terminal Description
# n i Pn o i t p i r c s e D
1:D N Gn r u t e R r e w o P
2:N I V) C D V 0 5 + o t 0 2 + (
3:A e s a h Pr o t o M p e t S e h t f o 1 e s a h P
4:A e s a h Pr o t o M p e t S e h t f o 3 e s a h P
5:B e s a h Pr o t o M p e t S e h t f o 2 e s a h P
6:B e s a h Pr o t o M p e t S e h t f o 4 e s a h P
Optically Isolated Inputs
The following inputs to the MBC061281 are Optically Isolated.
To enable an input, apply a DC voltage source of +5VDC. The Anodes (+) are pins 1,3,and 5 and the
Cathodes (-) are pins 2, 4, and 6. The change of the enable signal must be ahead of the direction signal by
at least 5 uSeconds. The Direction signal must be ahead of the step clock signal by at lease 5 uSeconds.
m e t I# n i P
k c o l C)1 B T ( 2 & 1
n o i t c e r i D)1 B T ( 4 & 3
f f O / n O)2 B T ( 2 & 1 
						

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Hook Up Drawings
Figure 1: Hook up for current sinking inputs
Figure 2: Hook up for current sourcing inputs 
						

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Motor Selection
The MBC061281 is a Bipolar Microstep Driver that is compatible with both Bipolar and Unipolar Motor
Configurations, (i.e. 8 and 4 lead motors, and 6 lead center tapped motors).
Step motors with low current ratings and high inductance will perform better at low speeds, providing
higher low-end torque. Motors with high current ratings and low inductance will perform better at higher
speeds, providing more high-end torque. Higher voltages will cause the current to flow faster through the
motor coils. This in turn means higher step rates can be achieved. Care should be taken not to exceed the
maximum voltage of the driver.
Since the MBC061281 is a constant current source, it is not necessary to use a motor that is rated at the
same voltage as the supply voltage. What is important is that the MBC061281 is set to the appropriate
current level based on the motor being used.  Refer to the following chart for setting the current potentiom-
eter based on the current code in the part number of the motor. Examples of motor part numbers are
shown below. Anaheim Automation offers a comprehensive line of step motors in NEMA sizes 08,11,14,
15, 17, 23, 24, 34 and 42 frame sizes. Contact the factory to verify motor compatibility with the MBC061281.
Step Motor Current Setting Guide
Anaheim Automation offers motor cable, making hook-ups quick and easy!
Contact the factory or visit our website for more motor and cable offerings.
e l p m a x E r o t o Mt n e r r u C r o t o M
e d o C r e b m u Nr a l o p i n U
g n i t a Rs e i r e S
k a e P
g n i t a Rl e l l a r a P
k a e P
g n i t a Rt n e r r u C s e i r e S
g n i t t e Sl e l l a r a P
t n e r r u C
g n i t t e S
1 D 3 220S2 0
A 0 . 1A0 . 1A0 . 2FF O , F F O , F F OFF O , F F O , N O
3 L 3 2308W L - D3 0
A 5 . 1A5 . 1A0 . 3FF O , F F O , F F OFF O , N O , F F O
1 N 4 3408W L - S4 0
A 0 . 2A0 . 2A0 . 4FF O , F F O , N ONO , F F O , F F O
0 4 L 3 2508W L - D5 0
A 5 . 2A5 . 2A0 . 5FF O , N O , F F ONO , N O , F F O
1 A 4 360B6 0
A 0 . 3A0 . 3A0 . 6FF O , N O , F F ONO , N O , N O
2 N 4 3708W L - S7 0
A 5 . 3A5 . 3A0 . 7FF O , N O , N ONO , N O , N O
1 K 4 3808W L - S8 0
A 0 . 4A0 . 4A0 . 8NO , F F O , F F O-- -
2 N 2 490BC - S9 0
A 5 . 4A5 . 4A0 . 9NO , F F O , N O-- -
3 L 3 2018W L - S0 1
A 0 . 5A0 . 5A0 . 0 1NO , N O , F F O-- -
3 D 4 311D1 1
A 5 . 5A5 . 5A0 . 1 1NO , N O , N O-- -
1 K 2 421BC - S2 1
A 0 . 6A0 . 6A0 . 2 1NO , N O , N O-- -
2 D 4 331S3 1
A 5 . 6A5 . 6A0 . 3 1-- --- -
3 N 4 3418W L - S4 1
A 0 . 7A0 . 7A0 . 4 1-- --- -
1 N 2 451BC - D5 1
A 5 . 7A5 . 7A0 . 5 1-- --- -
4 K 4 3618W L - S6 1
A 0 . 8A0 . 8A0 . 6 1-- --- -
1 D 2 491D9 1
A 5 . 9A5 . 9A0 . 9 1-- --- -
3 N 2 422BC - S2 2
A 0 . 1 1A0 . 1 1A0 . 2 2-- --- -
2 D 2 452S5 2
A 5 . 2 1A5 . 2 1A0 . 5 2-- --- - 
						

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Microstep Selection (SW1 Settings)
Switches 5, 6, 7 and 8, of the DIP switch select the number of microsteps per step. The following table
shows the standard resolution values along with the associated positions for the dip switches. The stan-
dard waveforms are sinusoidal.
Setting the Output Current
The output current on the MBC061281 is set by Switches 1, 2 and 3. The position determines the per
phase peak output current of the driver. The relationship between the output current and the switch set-
tings are as follows.
t n e r r u C k a e Pt n e r r u C S M R1 W S2 W S3 W S
A 4 . 1A0 . 1F F OF F OFF O
A 1 . 2A5 . 1N OF F OFF O
A 7 . 2A9 . 1F F ON OFF O
A 2 . 3A3 . 2N ON OFF O
A 8 . 3A7 . 2F F OF F ONO
A 3 . 4A1 . 3N OF F ONO
A 9 . 4A5 . 3F F ON ONO
A 6 . 5A0 . 4N ON ONO
n o i t u l o s e Rv e R / s p e t S5 W S6 W S7 W S8 W S
200 4FF ONONONO
400 8NOFF ONONO
800 6 1FF OFF ONONO
6 100 2 3NONOFF ONO
2 300 4 6FF ONOFF ONO
4 600 8 2 1NOFF OFF ONO
8 2 100 6 5 2FF OFF OFF ONO
500 0 1NONONOFF O
0 100 0 2FF ONONOFF O
0 200 0 4NOFF ONOFF O
5 200 0 5FF OFF ONOFF O
0 400 0 8NONOFF OFF O
0 500 0 0 1FF ONOFF OFF O
0 0 100 0 0 2NOFF OFF OFF O
5 2 100 0 5 2FF OFF OFF OFF O
Reduced Current Setting
Switch 4 is used for enabling or disabling the reduced current ant standstill. When this switch is off, the
driver will be in reduced current setting and the standstill current will be 60% of the set motor current.
When this switch is on, the driver will not be in reduced mode and the standstill current will be 100% of
the set motor current. 
						

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Determining Output Current
The output current for the motor used when microstepping is determined differently from that of a full/half
step unipolar driver. In the MBC061281, a sine/cosine output function is used in rotating the motor. The
output current for a given motor is determined by the motors current rating and the wiring configuration of
the motor. There is a current adjustment potentiometer used to set the output current of the MBC061281.
This sets the peak output current of the sine/cosine waves. The specified motor current (which is the
unipolar value) is multiplied by a factor of 1.0, 1.4, or 2.0 depending on the motor configuration (series,
half-coil, or parallel).
Step Motor Configurations
Step motors can be configured as 4, 6, or 8 leads. Each configuration requires different currents. Refer to
the lead configurations and the procedures to determine their output current.
WARNING! Step motors will run hot even when configured correctly. Damage may occur to the motor if
a higher than specified current is used. Most specified motor currents are maximum values. Care
should be taken to not exceed these ratings.
6 Lead Motors
When configuring a 6 lead motor in a series configuration (connected from end to end with the center tap
floating) use the specified per Phase (or unipolar) current rating to determine the current setting potentiom-
eter value.
When configuring a 6 lead motor in a half-coil configuration (connected from one end of the coil to the
center tap), multiply the specified per Phase (or unipolar) current rating by 1.4 to determine the current
setting potentiometer value. This configuration will provide more torque at higher speeds when compared
to the series configuration. 
						

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4 Lead Motors
Multiply the specified series motor current by 1.4 to determine the current adjustment potentiometer
value. Four Lead Motors are usually rated with their appropriate series current, as opposed to the Phase
Current, which is the rating for 6 and 8 lead motors.
8 Lead Motors
Series Connection: When configuring the motor windings in series, use the per Phase (or unipolar)
current rating to determine the current setting potentiometer value.
Parallel Connection: When configuring the motor windings in parallel, multiply the per Phase (or unipo-
lar) current rating by 2.0 to determine the current setting potentiometer value.
NOTE: After the current has been determined, according to the motor connections above, use Table 3 to
choose the proper setting for the current setting potentiometer. 
						

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Figure 3: MBC061281 Dimensions
Connecting the Step Motor
Phase 1 (A) and 3 (A\) of the Step Motor is connected between pins 3 and 4 on the motor connector (TB3).
Phase 2 (B) and 4 (B\) of the Step Motor is connected between pins 5 and 6 on the motor connector
(TB3).Refer to Figures 1 and  2 for TYPICAL APPLICATION HOOK-UP.
NOTE: The physical direction of the motor with respect to the direction input will depend on the connection
of the motor windings.  To reverse the direction of the motor with respect to the direction input, switch the
wires on Phase 1 (A) and  Phase 3 (A\).
WARNING: Do not connect or disconnect motor wires while power is applied! Doing so will cause an
extremely high back-EMF voltage surge which could possibly destroy the driver.
Short-Circuit, Mis-Wire, and Over-Current Conditions
If there is a condition that causes on over current in the driver phase transistors, the alarn indicator LED will
turn red and power will be shut off to the motor.  To reset the drive turn power off, check wiring, and turn
power back on.
Over-Voltage and Under-Voltage Conditions
When the power supply voltage exceeds +52VDC, protection will be activated and the alarm indicator LED
will turn red. When the power supply voltage is lower than +20VDC, the driver will not work properly.
Dimension Drawing 
						

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ANAHEIM AUTOMATION
COPYRIGHT
Copyright 2003 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 writ-
ten 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 applica-
tions 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 indemnifies Anaheim Automation against all damages.
LIMITED WARRANTY
All Anaheim Automation products are warranted against defects in workmanship, materials and construc-
tion, when used under Normal Operating Conditions and when used in accordance with specifications.
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 first.  Warranty provisions may be voided if products
are subjected to physical modifications, 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 authoriza-
tion  (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.  Be sure to refer
to the TROUBLESHOOTING section of this manual.  If you need assistance beyond what this manual can
provide, contact your Local Distributor where you purchased the unit, or contact the factory direct.