Anaheim Stepper MBC08081 Users Guide

							USERS MANUAL 
MODEL MBC08081
MICROSTEP DRIVER  
ANAHEIM AUTOMATION
910 E. Orangefair Lane
Anaheim, CA 92801
TEL (714) 992-6990
FAX (714) 992-0471
E-Mail: [email protected]
www.anaheimautomation.com
January 2000               #L010058COPYRIGHT
Copyright 2000 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 of Sales, 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 construction, 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 the products are subjected to physical damage or abuse.
    
Anaheim Automation will repair or replace at its option, any of its products which
have been found to be defective and are within the warranty period, provided that
the item is shipped freight prepaid, with RMA (return material authorization), to
Anaheim Automations plant in Anaheim, California. 
						

							12TABLE OF CONTENTSINTRODUCTION
PAGE
INTRODUCTION.........................................2
ORDERING INFORMATION..........................3
DESCRIPTION ..........................................4
TERMINAL  DESCRIPTION TB1.....................4
TERMINAL  DESCRIPTION (TB2 & TB3) & DIMENSIONS5
WIRING DIAGRAM................................6
SPECIFICATIONS.................................7
 OUTPUT CURRENT.....................................8
DETERMINING OUTPUT CURRENT.................8
SETTING OUPUT CURRENT.......................8
REDUCING OUTPUT CURRENT....................9
MOTOR SELECTION .....................................9    
STEP MOTOR CONFIGURATION....................9
STEP MOTOR CONNECTION......................10
POWER CONNECTIONS.................................13
ANAHEIM AUTOMATION STEP MOTOR SELECTION ........14
MICROSTEP SELECTION ...............................15
OPTICALLY  ISOLATED INPUTS  .........................15
TORQUE/SPEED CURVES...............................16   
The MBC08081 Microstep Motor Driver has an output current capability of 2.3
Amps minimum to 8.3 Amps maximum (Peak Rating).  The MBC08081 driver will
operate from +24VDC minimum to +85VDC maximum.  The inputs are optically
isolated with a minimum sourcing of 1mA per input (+5VDC minimum to +24VDC
maximum).  The clock input is set to receive negative edge clocks with a
maximum frequency of 100KHz.  The direction input is current sourcing for CW
and no current for CCW.  The ON/OFF feature is current sourcing to de-energize
the step motor and no current to energize the step motor.  Reduce Current
Enabled automatically reduces Motor current to 70% of set value after last step
(920msec delay).  The driver has built-in features to indicate power on (Green
LEDs) and Clocks being received, greater than 100 Hz (Yellow LED).
The MBC08081 will deliver a peak current of 8.3 Amperes per phase at +85
Volts, providing outstanding motor performance. This advanced technology
reduces ripple current while maintaining the 20kHz chopping frequency in the
motor, causing less heat in both the motor and drive. 
With the MBC08081, various step resolutions can be implemented by the
onboard dip switch. These divisions range from 200 steps per revolution to 1600
steps per revolution.  The bipolar drive configuration handles 4, 6, and 8 lead
motors.  Protection devices have been added to this driver for Phase to Phase
Short-Circuit conditions. 
Microstep Driver features include:
# Size (7.125L x 1.7W x 5.52H)
#Input Voltage +24 to +85VDC
#Output Current 8.3 Amps Peak
#200 to 1600 steps/rev (1,2,4 and 8 selectable step operations)
#Short Circuit Protection
#No Minimum Inductance
#Optical Isolation
#   Motor ON/OFF input 
						

							341.5 Amp Microstep DriverMBC158
1.5 Amp Microstep DriverMBC15161
8.3 Amp Microstep DriverMBC08081 (featured)
40VDC Power SupplyPSA40V4A
65VDC Power SupplyPSA65V5A
80VDC Power SupplyPSA80V4A
Shielded Motor CableAA129010S ORDERING INFORMATION FOR ANAHEIM AUTOMATIONPIN DESCRIPTIONS TB1
MICROSTEP DRIVERS AND ACCESSORIES 
Model MBC158
This microstep driver is a Single Axis,1.5 Amp Driver.  The MBC158 requires a
DC power supply of 12 volts to 48 volts. The PSA40V4A is the recommended
Anaheim Automation power supply .  The power supply must be ordered
separately. Divide- by- 8 Maximum.
Model MBC15161
This microstep driver is a Single Axis,1.5 Amp Driver.  The MBC15161 requires
a DC power supply of 12 volts to 48 volts. The PSA40V4A is the recommended
Anaheim Automation power supply .  The power supply must be ordered
separately. Divide- by- 16 Maximum.
Model MBC08081
This microstep driver is a Single Axis, 8.3 Amp Driver. The MBC08081 requires
a DC power supply of 24 volt to 85 volts.  The PSA80V4A is the recommended
Anaheim Automation power supply. The power supply  must be ordered
separately . Divide- by- 8 Maximum.
  
Model PSA40V4A
This is an unregulated 40VDC, 4A power supply.
Model PSA65V5A
This is an unregulated 65VDC, 5A power supply.
Model PSA80V4A
This is an unregulated 80VDC, 4A power supply.Pin#Description
1Direction Anode (+): This isolated input is used to change the
direction of the motor. Physical direction also depends on the
connection of the motor windings. 
2Direction Cathode (-):
3Step Clock Input Anode (+): A positive going edge on this
isolated input advances the motor one increment. The size of the
increment is dependent on the Microstep Select Inputs of Switch
1.
4Step Clock Input Cathode (-):
5ON/OFF Anode (+): This isolated input is used to enable/disable
the output section of the driver. When HIGH (open) the outputs
are enabled. However, this input does not inhibit the step clock. 
6ON/OFF Cathode (-) 
7+5 VDC: This non-isolated output can be used to supply up to 100
mA of current to the isolated inputs.  Note: by doing this,
isolation will be disabled.
     80 VDC: +5VDC return
Table 1 - CONNECTOR TB1
PIN DESCRIPTIONS TB2
Pin#Description
1Phase 1A:  Phase 1of the Step Motor
2Phase 1B:  Phase 3 of the Step Motor
3Phase 2A:  Phase 2 of the Step Motor
4Phase 2B:  Phase 4 of the Step Motor
5Motor Ground 
						

							56Dimension Drawing  Table 2 - CONNECTOR TB2
PIN DESCRIPTIONS TB3
Pin#Description
1+VIN: Supply voltage input (24VDC - 85VDC).
2Ground: Supply voltage ground.
3Earth Ground
Table 3 - CONNECTOR TB3TYPICAL HOOK-UPS FOR APPLICATION:
Figure 2 - Sample Hook Up for Current Sinking Inputs
Figure 3 - Sample Hook Up for Current Sourcing Inputs 
Optional: Non- Isolated +5Vdc Output can power MBC08081 Inputs but
isolation is eliminated. 
						

							78SPECIFICATIONSDETERMINING OUTPUT CURRENT
 
ABSOLUTE MAXIMUM RATINGS The output current for the motor used when microstepping is determined
INPUT VOLTAGE:  24 TO +85 VDCdifferently from that of a half/full unipolar driver.  In the MBC08081, a sine/cosine
OUTPUT CURRENT:  8.3 AMPS PEAKoutput function is used in rotating the motor.  The output current for a given motor
PLATE TEMPERATURE:  70° Cis determined by the motors current rating and the configuration for how the
STORAGE TEMPERATURE:  40° TO +125° Cmotor is hooked up.  There is a current adjustment potentiometer used to set the
INPUT VOLTAGE (For isolated inputs):  +5 TO +24 VDCoutput current of the MBC08081.  This sets the peak output current  of the
ELECTRICAL SPECIFICATIONS 
ITEMMINTYPMAXUNITS
Input Voltage24 6585V
Phase Output Current1.65.8A (RMS)
Phase Output Current2.38.3A (Peak)
Clock Frequency0100kHz
Chopping Frequency 202733kHz
+5VDC Output4.855.2V
+5VDC Output0100mA
Operation Temperature070°C
Table 4 - MBC08081 Electrical Specificationssine/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).
SETTING OUTPUT CURRENT
The output current on the MBC08081 is set by an onboard potentiometer.  This
potentiometer determines the per Phase peak output current of the driver.   The
relationship between the output current and the potentiometer value is as follows:
PeakPotentiometerPeakPotentiometer
CurrentSettingCurrentSetting
2.3 Amps0%5.9 Amps60%
2.9 Amps10%6.5 Amps70%
3.5 Amps20%7.1 Amps80%
4.1 Amps30%7.7 Amps90%
4.7 Amps40%8.3 Amps100%
5.3 Amps50%----
Table 5 - Potentiometer values with respect to the output current
Refer to Table 6 for specific motor current settings. 
						

							910REDUCING OUTPUT CURRENT6 Lead Motors 
Reducing the output current is accomplished by setting switch 3 of the DIP switchone end of the coil to the center tap), multiply the specified per Phase (or
to the  ON position and occurs approximately 1 second after the last positiveunipolar) current rating by 1.4 to determine the current setting potentiometer
going edge of the step clock input. value.  This configuration will provide more torque at higher speeds when
The amount of current per Phase in the reduction mode is 70% of the set current.
When the current reduction circuit  is activated, the current reduction  resistor is
paralleled with the current adjustment potentiometer.  This lowers the total
resistance value, and thus lowers the per Phase output current.
MOTOR SELECTION
The MBC08081 is a Bipolar microstep driver working equally well 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 higher high-
end torque. 
Since the MBC08081 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 MBC08081 is set to the appropriate current level based on the motor
being used.
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.
STEP MOTOR CONFIGURATIONS
Step motors can be configured as 4, 6, or 8 leads.  Each configuration requires
different currents.  Shown below are different lead configurations and the
procedures to determine their output current.When configuring a 6 lead motor in a half-coil configuration (connected from
compared to the series configuration.
When configuring the 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 potentiometer value.
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.
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.   
						

							11128 Lead MotorsCONNECTING POWER
Series Connection: When configuring the motor windings in series, use the perPins 1 and 2 on connector TB3 are used to connect the DC Power Supply to the
Phase (or unipolar) current rating  to determine the current setting potentiometerMBC08081.  Wire size used to connect the power source to the driver should be
value.at least 16 gauge.  Heavier wire should be used for longer distances between the
Parallel Connection: When configuring the motor windings in parallel, multiply
the per Phase (or unipolar) 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, follow the procedure Determining Output Current above to
find the current value.  Then use Table 3 to choose the proper setting on the
current setting potentiometer.
CONNECTING THE STEP MOTOR
Phase 1 and 3 of the Step Motor is connected between pins 1 and 2  on
connector TB2.  Phase 2 and 4 of the Step Motor is connected between pins 3
and 4 on connector TB2.  The motor’s case can be grounded  to pin 5 on
connector TB2. Refer to Figure 2 & 3 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 and  
Phase 3.
WARNING: Do not connect or disconnect motor wires while power is applied!power supply and the driver.  The power supply requirements are as follows:
Switching Power Supplies and regulated linears with overcurrent protection are
not recommended because of their inability to handle surge currents.  Adding a
capacitor to the output will alleviate this problem.
When multiple drivers are run from one power supply, each driver should have
separate power and ground wires that connect directly to the output capacitor of
the power supply.
Refer to Figure 2 & 3 for TYPICAL APPLICATION HOOK-UP.
WARNING: When using an unregulated power supply, care should be taken to
ensure that the output voltage DOES NOT exceed the maximum driver input
voltage because of line voltage fluctuations.  It is recommended that an input line
filter be used on the power supply to limit voltage spikes to the driver.
NOTE: To connect the drivers’s case to earth ground use, pin 3 on connector
TB3. 
						

							1314Anaheim Automation Step Motor Selection Guide MICROSTEP SELECTION (SW1 SETTINGS)
  Part UnipolarSeries ParallelSeriesParallel
NumberRating Peak PeakCurrentCurrent
 [ Amps ]RatingRating SettingSetting 
 [ Amps ] [ Amps ]Pot. ValuePot. Value
(%) (%)ResolutionSteps/Select 1Select 2Select 3Auto
23L104224N/A30
34N2073.53.572080
23L1084483095
23L210551045100
42N112661260100
42N214771480100
42N1157.57.51585100
34N416881695100
42D2199.29.218.4100100
TABLE 6 - Table Selection for Anaheim Automation Motor Current Settings.The number of microsteps per step is selected by switches 1 and 2, of the DIP
switch.  Table 5 shows the standard resolution values  along with the associated
inputs for the select switches 1 and 2.  The standard waveforms are sinusoidal.
RevReduce
Current
1200OFFOFFOFFDISABLED
2400ONOFFOFFDISABLED
4800OFFONOFFDISABLED
81600ONONOFFDISABLED
1200OFFOFFONENABLED
2400ONOFFON  ENABLED
4800OFFONONENABLED
81600ONONONENABLED
TABLE 7 - Microstep Selection on Switch 1
OPTICALLY ISOLATED INPUTS
The following inputs to the MBC08081 are Optically Isolated.
ItemPin #
Direction1 & 2
Clock3 & 4
On/Off5 & 6
To Enable an input, apply a DC voltage source of +5VDC to +24VDC across the
inputs.  The Anodes (+) are pins 1,3,and 5 and the Cathodes (-) are pins 2, 4, 
and 6 
						

							23L306 With MBC08081, 80V, Eight Step, Parallel
0 40 80 120 160 200 240
280 320 360 400
05101520253035404550
SPEED (RPS)TORQUE (oz-in)0 20
40 60 80 100 120
140 160 180 200POWER (Watts)TORQUEPOWER23L306S With MBC08081, 80V, Eight Step, Series
0 40 80 120 160
200 240 280 320
360
400
05101520253035404550
SPEED (RPS)
TORQUE (oz-in)0 10
20 30 40
50 60 70 80
90
100POWER (Watts)TORQUEPOWER34K307 With MBC08081, 80V, Div by 8, Parallel
0 200 400 600 800 1000 1200
1400 1600 1800 2000
05101520253035404550
SPEED (RPS)TORQUE (oz-in)0 24 48 72 96 120 144
168 192 216 240TORQUEPOWER42N115 With MBC08081, 80V, Div by 8, Series
0 150 300 450 600 750
900 1050 1200 1350 1500
05101520253035404550
SPEED (RPS)
TORQUE (oz-in)0 20 40 60 80 100
120 140 160 180 200POWER (Watts)TORQUEPOWER1516PERFORMANCE CURVESPERFORMANCE CURVES 
						

							17NOTES
910 E. Orangefair Lane
Anaheim, CA 92801
TEL (714) 992-6990
FAX (714) 992-0471
E-Mail: [email protected]
www.anaheimautomation.com