Anaheim Stepper MBD4502175 Users Guide

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MBC45021-75
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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General Description
The Anaheim Automation MBD45021-75 is a bilevel step motor driver specifi cally designed to dynamically 
enhance driver performance.  The driver requires 24 to 40 volts to operate with this drive.  The drive will 
out perform all standard 24VDC drivers in the industry.  If your system is designed for a 24VDC specifi ca-
tion, this driver will allow you motor to increase its operating output performance thanks to this outstanding 
new driver design.
Bilevel Drive
The basic function of a step motor driver is to control the motor winding currents.  Motor performance is 
determined by how fast the driver can increase and decrease the winding currents.  A rapid rise in wind-
ing current is achieved by applying a high voltage directly to a motor winding.  This rapid rise of current 
is also referred to as the “kick” or operating current.  When a desired current level is reached, the high 
voltage is turned off and a low voltage is applied to maintain a suitable holding current level.  When a 
motor winding is turned off, a rapid decrease in winding current is achieved by routing the energy in the 
collapsing fi eld back to the power supply through a high voltage path.  The high voltage supply furnishes 
the energy necessary to maintain motor output torque at high step rates thus providing high mechanical 
power output.  The low voltage supply provides much of the current needed at low step rates and all of 
the holding current.  Bilevel drivers do not use high frequency switching techniques as chopper drivers 
do.  Consequently, they do not create the EMI, RFI, and motor heating problems that are associated with 
chopper drivers.
Half Step/Full Step
Users have a choice of full-step or half-step operation.  Full-step operation occurs by energizing two phases 
at a time, rotating a typical motor 1.8 degrees per step.  Half-step operation occurs by alternately energiz-
ing one, and then two, phases at a time, rotating the motor 0.9 degrees per step.  Full-step operation is 
only for application that specifi cally require that mode, such as when retrofi tting existing full-step systems.
Motor On/Off - Reset
The Motor On/Off feature allows the de-energizing of a motor without disturbing the positioning logic.  
After re-energizing the motor, a routine can continue.  This reduces motor heating and conserves power, 
especially in applications where motors are stopped for long periods.  The reset pin is used to reset a fault 
condition.  This input must be held low for at least 10 msec to reset the driver.
MBD45021-75 Features
• 1.0 - 4.5Amps/Phase Operating Current
• Enhanced Torque/Speed Output over 24VDC drives
• Improved Start-Stop Speeds
• Short-Circuit Protection
• Open Motor Wire Detection
• No RFI or EMI Problems
• Requires 24-40VDC
• TTL-CMOS Compatible Inputs
• Receives Positive or Negative Going Clocks
• Full Step or Half Step Operation
• Motor Turn Off Provisions
• Enclosed Modular Package 
						

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Clock Modes
The MBC45021-75 has two clock options: clock and direction, or dual clock operation.  Jumper JP2 is used 
to select the clock option.  Jumper JP2 predetermines if a Direction Input or CCW Input will be selected.  
(Terminal Block TB1, pin 2)
When using the clock and direction option (most common option), clock pulses applied to the clock input 
cause the motor to step.  The direction of the motor is determined by the logic level of the direction input.  
Jumper JP2 must be in the “2-3 position for this mode.  Physical direction also depends on the motor wiring.
With the dual clock option, clock pulses applied to the clock input cause the motor to step in the clockwise 
direction.  Clock pulses applied to the CCW input cause the motor to step in the counter-clockwise direc-
tion.  Jumper JP2 must be in the “1-2” position for this mode.
(Refer to Jumper Functions/Locations for details on JP2)
Either positive or negative going pulses may be used by setting jumper JP1 in the appropriate position.  
To determine which setting to use, fi rst consider the type of clock pulse output on the pulse generator 
or indexer (controller).  If the clock output on the controller is open-collector type (sinking), then use the 
negative going jumper setting (position “1-2”).  If the clock output on the controller is a pnp or p-channel 
(sourcing) type, then use the positive going jumper setting (position “2-3”).  If the clock output on the 
controller is TTL/CMOS type (totem pole), then either setting will work; but the jumper setting should be 
chosen based on the level of the clock output when the controller is not pulsing.  If the clock is low when 
not pulsing, then use positive going jumper settings.  If the clock is high when not pulsing, then use the 
negative going jumper setting.
Motor Connection
Refer to the hookup diagram for typical driver applications.  Wires connected to inputs must be separated 
from the motor connections and all other possible sourcing of interference.  Important Note: When the 
wires from the driver to the step motor extends beyond 25 feet, consult the factory. 
Current Adjust Setting (CUR. ADJ.)
The potentiometer R16 is used to set the motor current.  The pot should be set according to the motor’s 
rated current.  This will produce a kick current of 1.4 times the rated motor current.
(Refer to Jumper Functions/Locations for details on R16)
Pot Setting Rated Motor Current Kick Current
0% 0.80A 1.10A
10% 1.15A 1.60A
20% 1.55A 2.15A
30% 1.90A 2.65A
40% 2.25A 3.20A
50% 2.65A 3.70A
60% 3.00A 4.20A
70% 3.40A 4.75A
80% 3.75A 5.25A
90% 4.15A 5.80A
100% 4.50A 6.30A 
						

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Low Voltage Adjust (VLV ADJ.)
The jumper JP3 is used to set the motor low voltage (VLV) supply which furnishes the current necessary 
for holding (standstill) torque and low speed running torque.  The potentiometer R16 and Jp3 setting will 
produce a standstill current that is 70% of the rated current.  Refer to the Anaheim Automation website or 
catalog for motor current ratings.  The charts below are a guide when selecting a motor and the jumper 
JP3 setting.  (Refer to Jumper Functions/Locations for details on JP3)
Pins 1-2
17L203
23D104
23L104
23L206
34D106
34K108
34N108
34R106
Pins 2-3
17L002
23D108
23D209
23D209
23D309
23L106
23L108
34D109
34D209
34R109
Pins 3-4
17L102 23L306
17L202 34D207
23D102 34D307
23D204 34K104
23D306 34K207
23L002 34K307
23L102 34N104
23L204 34N207
23L303 34N307
Note: For motors not listed contact the factory for correct jumper settings.
JP3 Description of Low Voltage Adjust Selection
2-3 Motor voltage per phase values below 2.6V should select Pins 2-3 on JP3.
1-2 Motor voltage per phase values between 2.6V and 3.6V should select Pins 1-2 on JP3.
3-4 Motor voltage per phase values above 3.6V should select Pins 3-4 on JP3. (Default)
Jumper Functions/Locations
Function JP1 JP2 JP3
Negative Going Clock Input 1-2 X X
Positive Going Clock Input 2-3 X X
TB1 Pin 2 = CCW X 1-2 X
TB1 Pin 2 = Direction X 2-3 X
Standard Product 1-2 2-3 3-4 
						

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Wiring Diagrams
Heating Considerations
The temperature of the heatsink should never be allowed to rise above 60° C.  If the necessary, air should 
be blown across the heatsink to maintain suitable temperatures.
Power Requirements
The MBD45021-75 can only be powered by a DC voltage only with a range of 24 to 40VDC.
Terminal Descriptions
TB1 TB2 TB3
Pin Description
1 Clock Input
2 Directional Control
3 Half or Full Step
4 On/Off, Reset
5 0VDC
Pin Description
1 0VDC
2 24-40VDC
Pin Description
1 Phase 1
2 Phase 3
3 Com 1 & 3
4 Com 2 & 4
5 Phase 2
6 Phase 4 
						

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Dimensions
Fault Protection
There are 3 types fault detection.  When a fault is detected, the driver turns off the motor current and a 
LED indicates which type of fault occured.  The Power LED is green and the 3 fault LEDS are off during 
normal operation.
Fault Type Fault Description
Short LED Red Shorted wire in the motor or cable.
Open LED Red Open wire in the motor or cable.
Temp/OV LED RedExcessive temperature or Over Voltage on 
the motor bus voltage.
If the driver goes into a fault condition, the fault may be reset by turning the power off for at least 20 sec-
onds or by pulling the reset input (TB1 pin 4) to a logic “0” for at least 10msec. 
						

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Specifi cations
Control Inputs:
TTL-CMOS Compatible
Logic “0” = 3.5 to 5.0 VDC
Logic “1” = 3.5 to 5.0 VDC
Terminals 1 and 2 on TB1 are pulled up or down (depending on jumpers) through 10k ohm resistors. 
Terminal on TB1 is pulled up through a 10k ohm resistor.
Clock, CCW:
(Terminals 1 and 2 of TB1)
15 microseconds minimum pulse width, positive or negative going.
Direction Control:
Logic “1” (open) - Clockwise
Logic “0” - Counterclockwise
Motor On/Off:
Logic “1” (open) - Motor energized
Logic “0” - Motor De-Energized
Output Current Rating:
5.0 Amperes per phase maximum operating current; 2.5 Amperes per phase maximum standstill current, 
over the operating voltage and temperature range.  Motor phase ratings of 0.8 Amperes minimum are 
required to meet the minimum kick level.
Power Requirements:
20VDC (min) - 40VDC (max)
Power Draw:
The power consumption of this driver from the DC power supply is determined by the DC voltage in.  The 
power draw is also motor dependent.  Motors exceeding 160 watts are not intended for the MBD45021-75 
driver.  The following formula can be used to determine the maximum power deliver by the driver:
Output Power = (VDC in) x 4.
Operating Temperature:
Heatsink - 0° to 60°C
Fuse:
8 Amp Fast Blow, 5 x 20mm
Power Supply Ordering Information
DC Supply Description Power
PSA40V4A 40V @ 4A, 175/230VAC IN 160 Watts
PSA24V2.7A 24V @ 2.7A, 90-265VAC IN 65 Watts
PSA40V8A 40V @ 8A, 115 VAC IN 320 Watts 
						

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Troubleshooting
(800) 345-9401 or (714) 922-6990 If a fault occurs, reset the fault by applying a logic “0” to the reset input (TB1 pin 3) for at least 10 msec 
(or by cycling power OFF for at least 20 seconds).  After resetting, try to run the motor again.  If the driver 
faults again then check the conditions listed below.
Is the Short LED red?
This indicates that the motor has a phase shorted or there is a short in the motor cable or wiring.  Check 
the motor and the wiring for shorts.  If the driver continues to sense “shorts” after the motor and wiring are 
determined to be accurate, then the output transistor should be checked (see below).
Is the Open LED red?
This indicates that there is an open or intermittant connection in one of the motor wires.  Check the mo-
tor and the wiring for opens.  Another condition that may cause this type of fault, is when a large motor is 
ramped down too quickly so that it loses it’s positioning.
Is the Temp/OV LED red?
This indicates that the motor/driver internal heatsink is overheating.  This detection turns off power to the 
motor, protecting the driver’s circuitry.  An application exceeding 160 watts is not intended for the MBD45021-
75.  Another condition that may cause this type of fault, is when the motor bus voltage is too high.
Checking Output Transistors
1.  Remove the cover plate.
2.  Set the multimeter to “diode test”.
3.  Place the red meter lead on 0VDC, TB1 pin 5.
4.  Touch the black meter lead to each phase (TB3 pins 1, 2, 5 and 6).
5.  Readings should be between 0.450VDC and 0.550VDC.
6.  If any readings are signifi cantly less than 0.450VDC, then the unit has been damaged.
If a factory repair is required, please contact Anaheim Automation for an RMA# at 
						

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Torque Speed Curves 
						

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ANAHEIM AUTOMATION
COPYRIGHT 
Copyright 2013 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.