Anaheim Stepper MBC08161 Users Guide

							February 2001
MBC08161
Bipolar Microstep Driver
User’s Guide
#L010001
910 East Orangefair Lane, Anaheim, CA 92801
e-mail: [email protected](714) 992-6990  fax: (714) 992-0471
website: www.anaheimautomation.com
ANAHEIM AUTOMATION     
						

							User’s Guide # MBC08161
MBC08161 Microstep Driver Features
  Size (6.500L x 2.150W x 5.325H)
  Output Current 8.0 Amps Peak
  200 to 3200 steps/rev (1,2,5,10 and 16 selectable step operations)
  Short Circuit Protection
  Motor Cable Miss-Wire Detection
  No Minimum Inductance
  Optical Isolation
  Motor ON/OFF input
Introduction
The MBC08161 Microstep Motor Driver has an output current capability of 3.0 Amps minimum to 8.0
Amps maximum (Peak Rating). The MBC08161 driver operates with either a transformer, whose input
can be wired from 90-265 VAC or a DC voltage of 30-85 Volts. The inputs are optically isolated with a
minimum sourcing of 1.0 mA per input (+5VDC minimum to +24VDC maximum). The clock input is set to
receive either positive or negative edge clocks with a maximum frequency of 100KHz. The MBC08161
driver offers direction control and motor current ON/OFF capabilities. The Reduce Current Enabled auto-
matically reduces motor current to 70% of set value after the last step is made (20msec delay). The driver
has built-in features to indicate power on (Green LED) and Clocks being received, greater than 100 Hz
(Yellow LED).
With the MBC08161, various step resolutions can be implemented by the onboard dip switch. These
divisions range from 200 steps per revolution to 3200 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 and Motor Miss-Wire 
conditions.
Pin Descriptions
The inputs on the MBC08161 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 1.0 mA needs to be sourced or sinked through the opto-diode. This is done simply by
placing a voltage of +5 to +24 VDC across the two inputs of the opto-diode. If sourcing current in to the
inputs, then all three cathodes (-) should be tied together and grounded as shown in Figure 4. If sinking
current, then all three anodes (+) should be tied together to the +voltage as shown in Figure 3. Provided
on the MBC08161 is an external +5VDC out which can be used to power the inputs for sinking mode only.
However if you use this voltage, isolation is not preserved.
TB2: 5 Pin Terminal Description
Table 1: Pin descriptions for terminal block TB2.
# n i Pn o i t p i r c s e D
1:A e s a h Pro t o M p e t S e h t f o 1 e s a h P
2:A e s a h Pro t o M p e t S e h t f o 3 e s a h P
3:B e s a h Pro t o M p e t S e h t f o 2 e s a h P
4:B e s a h Pro t o M p e t S e h t f o 4 e s a h P
5dn u o r G r o t o M 
						

							February 2001
# 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
5:) + ( 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
. k c o l c p e t s e h t t i b i h n i t o n s e o d t u p n i s i h t , r e v e w o H . 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
6)- ( e d o h t a C F F O / N O
7:C D V 5 +. s t u p n i d e t a l o s i e h t o t t n e r r u c f o A m 0 5 o t p u y l p p u s o t d e s u e b n a c t u p t u o d e t a l o s i - n o n s i h T
. d e l b a s i d e b l l i w n o i t a l o s i , s i h t g n i o d y B
8:C D V 0.n r u t e r C D V 5 +
TB1: 8 Pin Terminal Description
Table 2: Pin descriptions for terminal block TB1.
Power Supply Requirements
It is recommended that the MBC08161 be powered by the AA3621 Corresponding Transformer as speci-
fied. The AA3621 Transformer has an input line voltage ranging form 90-265VAC, two high-voltage wind-
ings (yellow-yellow/black), and a logic winding (orange). The high voltage windings can be used to power
two drivers or put into parallel to power one. If powering one driver, connect the two yellow wires together
and connect the two yellow/black wires together and plug into the quick disconnects (QD1 and QD2,
shown on Figures 3 & 4) located on the front face of the driver. When connecting two drivers, connect one
yellow wire and one yellow/black wire (they come out together in pairs), and connect them to the quick
disconnects (QD1 & QD2) located on the front face of each driver. When using the AA3621 Transformer,
the nominal voltage of the MBC08161 will be 80VDC. In figure 1, the transformer wiring is shown for
different line voltages ranging from 90-265VAC. A DC input of 30-85 volts can also be used to power the
drive. To connect the DC to the drive, place the ground wire on the QD2 and the plus wire on QD1. If
another transformer is desired, contact the factory for dimensions and wiring.
Transformer Drawings
Figure 1: Physical Dimensions of the AA3621 Transformer   
						

							User’s Guide # MBC08161
Transformer Drawings
Figure 2: Wiring for Various Line Voltages for the AA3621.
Absolute Maximum Ratings
Input Voltage: 60 VAC or 85 VDC
Output Current: 8.0 AMPS PEAK
Max Plate Temperature: 70° C
Storage Temperature: 0° to +50° C
Input Voltage (For isolated inputs):  +5V to +24V at 2.5mA
Electrical Specifications
m e t In i Mp y Tx a Ms t i n U
e g a t l o V t u p n I025506CA V
e g a t l o V t u p n I030858CD V
t n e r r u C t u p t u O e s a h P6. 5)S M R ( A
t n e r r u C t u p t u O e s a h P0. 8)K A E P ( A
y c n e u q e r F k c o l C000 1zH k
y c n e u q e r F g n i p p o h C027233zH k
C D V 5 +8. 45 2. 5V
C D V 5 +005Am
e r u t a r e p m e T n o i t a r e p O007C
Table 3: MBC08161 Electrical Specifications 
						

							February 2001
Hook Up Drawings
Optically Isolated Inputs
The following inputs to the MBC08161 are Optically Isolated. Optional: Non-Isolated +5VDC Output can power the MBC08161 Inputs (but isolation is eliminated).
Figure 3: Hook Up for Current Sinking Inputs
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.
m e t I# n i P
k c o l C2& 1
n o i t c e r i D4& 3
f f O / n O6& 5
Figure 4: Hook Up for Current Sourcing Inputs     
						

							User’s Guide # MBC08161
Motor Selection
The MBC08161 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.
Since the MBC08161 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 MBC08161 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.
Anaheim Automation offers a comprehensive line of step motors in 17, 23, 34 and 42 frame
sizes. Contact the factory to verify motor/ drive compatibility
.
Step Motor Selection 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.
t r a P
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 Rs e i r e S
t n e r r u C
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
6 0 2 L 3 2
0 . 30. 30. 6%0%0 6
0 1 2 L 3 2
0 . 50. 50. 0 1%0 4%0 0 1
6 0 3 L 3 2
0 . 30. 30. 6%0%0 6
0 1 3 L 3 2
0 . 50. 50. 0 1%0 4%0 4
8 0 1 N 4 3
0 . 40. 40. 8%0 2%0 0 1
2 1 1 N 4 3
0 . 60. 60. 2 1%0 6%0 0 1
7 0 2 N 4 3
5 . 35. 30. 7%0 1%0 8
4 1 2 N 4 3
0 . 70. 70. 4 1%0 8%0 0 1
7 0 3 N 4 3
5 . 35. 30. 7%0 1%0 8
4 1 3 N 4 3
0 . 70. 70. 4 1%0 8%0 0 1
5 1 1 N 2 4
5 . 75. 70. 5 1%0 9%0 0 1
TABLE 5 - Table Selection for Anaheim Automation Motor Current Settings. 
						

							February 2001
Microstep Selection (SW1 Settings)
Switches 2, 3 and 4, of the DIP switch select the number of microsteps per step. Table 6 shows the
standard resolution values along with the associated positions for the select switches. The standard wave-
forms are sinusoidal.
Setting the Output Current
The output current on the MBC08161 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:
t n e r r u C k a e Pg n i t t e S r e t e m o i t n e t o Pt n e r r u C k a e Pg n i t t e S r e t e m o i t n e t o P
A 0 . 3%0A 0 . 6%0 6
A 5 . 3%0 1A 5 . 6%0 7
A 0 . 4%0 2A 0 . 7%0 8
A 5 . 4%0 3A 5 . 7%0 9
A 0 . 5%0 4A 0 . 8%0 0 1
A 5 . 5%0 5- ---
Table 7:  Potentiometer values with respect to the output current
Refer to Table 5 for specific motor current settings.
Reducing Output Current
Reducing the output current is accomplished by setting switch 1 of the DIP switch to the ON position and
occurs approximately 1 second after the last positive going edge of the step clock input. The amount of
current per phase in the reduction mode is approximately 70% of the set current. When the current
reduction circuit is activated, the current reduction resistor is paralleled with the current adjustment poten-
tiometer. This lowers the total resistance value, and thus lowers the per Phase output current.
n o i t u l o s e Rv e R / s p e t S1 t c e l e S2 t c e l e S3 t c e l e S4 t c e l e St n e r r u C e c u d e R o t u A
1
0 0 2FF ONONONOde l b a s i D
2
0 0 4FF ONONOFF Ode l b a s i D
5
0 0 0 1FF ONOFF ONOde l b a s i D
0 1
0 0 0 2FF ONOFF OFF Ode l b a s i D
6 1
0 0 2 3FF OFF OFF OFF Ode l b a s i D
1
0 0 2NONONONOde l b a n E
2
0 0 4NONONOFF Ode l b a n E
5
0 0 0 1NONOFF ONOde l b a n E
0 1
0 0 0 2NONOFF OFF Ode l b a n E
6 1
0 0 2 3NOFF OFF OFF Ode l b a n E
Table 6: Microstep Selection on Switch 1. 
						

							User’s Guide # MBC08161
6 Lead Motors
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.
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.
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.
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 MBC08161, 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 MBC08161.
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).     
						

							February 2001
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.       
						

							User’s Guide # MBC08161
Dimension Drawing
Figure 5: MBC08161 Dimaensions
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 motors case can be grounded
to pin 5 on connector TB2. Refer to Figures 2, 3 & 4 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!
Miss-Wire Detection
When power is applied to the MBC08161 there is a brief moment for miss-wire checks of the motor
cables.  If it is found that there is a miss-wire, the yellow LED will blink and power will be shut off to the
motor.  To reset the drive turn power off, check wiring, and turn power back on.