Anaheim Stepper DPD72001 Users Guide

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DPD72001, DPD72002
Unipolar Step Motor 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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What Is a Step Motor Driver?
A step motor driver is a device that takes input signals (usually Clock and Direction) and translates this 
information into phase currents in the motor.  Each time the step motor driver receives a pulse, the step 
motor moves one step.  If the driver receives 200 pulses, the motor moves 200 steps.  The motor steps 
at the same frequency as the clock pulses.
General Description
The BLD72 is a step motor driver that can drive motors rated from 1 to 7 amps/phase (unipolar rating).  
It can handle 6-lead and 8-lead motors.  This driver features a unipolar bilevel (or dual voltage) drive 
technique with short and open circuit protection (with a Fault LED).
Bilevel Drive
The basic function of a motor driver is to provide the rated motor phase current to the motor windings 
in the shortest possible time.  The bilevel driver uses a high voltage to get a rapid rate of current rise in 
the motor windings in the least amount of time.  When reaching the preset trip current, the driver turns 
off the high voltage and sustains the current from the low voltage supply.
Half-Step/Full-Step
Users have a choice of full-step operation of half-step operation.  Full-step operation occurs by energiz-
ing two phase at a time, rotating a typical motor 1.8° per step.  Half-step operation occurs by alternately 
energizing one, and then two, phases at a time, rotating the motor 0.9° per step.  Full-step operation is 
suggested for applications that specifi cally require that mode, such as when retrofi tting existing full-step 
systems.
DPD72001 Driver Features
• Integrated BLD72, 300W Power Supply, and Cooling Fan
• Unipolar Operation
• Bilevel Driver Operation
• 90-265 VAC Input Option (X250)
• 10 Amps per Phase Operating Current (Kick Current)
• 7 Amps per Phase Standstill Current
• 95 Volt Operation
• Short Circuit Protection
• Open Circuit Protection
• Motor ON/OFF Input Half-Step and Full-Step Operations
• Fault LED
• Detachable Terminal Block
• Compact and Rugged
Figure 1: Step Motor Driver 
						

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Clock Modes
The BLHV has two clock options: Clock and Direction, or Dual Clock operation.  Jumper JP2 is used to 
select the clock option.  Basically JP2 selects Terminal 5 as either the Direction input or the CCW input.  
With the Clock and Direction option (most common option), clock pulses applied to the clock input (Termi-
nal 6) cause the motor to step.  The direction of the motor is determined by the logic level of the direction 
input (Terminal 5).  Jumper JP2 must be in the “2-3” position for this mode (see Figure 4 and Table 1).
With the Dual Clock option, clock pulses applied to the Clock input (Terminal 6) cause the motor to step 
in the clockwise direction.  Clock pulses applied to the CCW input (Terminal 5) cause the motor to step in 
the counterclockwise direction.  Jumper JP2 must be in the “1-2” position for this mode.
Either positive or negative going pulses may be used by setting jumper JP1 in the appropriate position 
(see Table 1).  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 open-collector type (sinking), then use 
the negative going jumper setting (JP2 must be in the “1-2” position).  If the clock output on the controller 
is a pnp or p-channel (sourcing) type, then use the positive going jumper setting (JP2 must be in the “2-3” 
position).  If the clock output on the controller is a 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 i 
high when not pulsing then use negative going jumper setting.
The clock inputs (Clock and CCW) are pulled up to +5VDC through a 10K ohm resistor for negative going 
clock inputs, they are pulled down to 0VDC through a 10K ohm resistor for positive going clock inputs.  
The pullups/pulldowns are followed by an RC fi lter.  See Figure 2 and Figure 3.
Adjusting Kick Current
By following the silkscreen instructions on the cover, use a small screwdriver to adjust the potentiometer.  
Line up the potentiometer’s arrow to the number corresponding to the motors rated current (amps/phase).
Figure 2: Sourcing Clock Input Figure 3: Sinking Clock Input
Example 1: 23M104 Motor, Set to 2.0A Example 2: 34D314 Motor, Set to 7.0A. 
						

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Motor ON/OFF Input
The motor on/off input allows de-energizing a motor without disturbing the positioning logic.  After reen-
ergizing the motor, a routine can continue.  This reduces motor heating and conserves power, especially 
in applications where motors are stopped for long periods and no holding torque is required.  If holding 
torque is required (such as when lifting a load vertically), then the motor must stay energized.
Jumper Functions/Locations
Function JP1 JP2 JP3
Negative Going Clocks 1-2 x x
Positive Going Clocks 2-3 x x
Terminal 5 = CCW x 1-2 x
Terminal 5 = Direction x 2-3 x
Ground Fault Detection Disabled x x 1-2
Ground Fault Detection Enabled x x 2-3
Standard Product 1-2 2-3 1-2
Fault Protection
There are 3 types of fault detection.  When a fault is detected, the driver turns off the motor current and the 
red Fault LED indicates which type of fault occurred.  See the Troubleshooting section for more information.
1 LED - Slow Blink Shorted wire in the motor or cable.
2 LED - Fast Blink Open wire in the motor or cable.
3 LED - On Solid Ground Fault (Voltage Shorted to 0V)
If the driver goes into a fault condition, the fault may be reset by turning the power OFF for at least 15 
seconds or by pulling the RESET FAULT input (terminal 4) to a logic “0” for at least 100ms.
Motor Connections
Figure 5 is a hookup diagram for typical BLD72 driver applications.  Inputs connections must be separated 
from motor connections and all other possible sources of interference.
IMPORTANT NOTE: If the motor cable between the driver and the step motor extends beyond 25 feet, 
consult the factor.
Figure 4: Jumper Locations 
						

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Hook-Up Drawing   
Power Supply Requirements
The DPD72001 and DPD72002 are both powered by an AC line voltage of 110VAC.  The X250 version is 
capable of line voltages ranging from 90-265VAC.  The following fi gure shows the various line voltages.
Figure 5: Typical Hook-up for Clockwise and Direction Option and Motor Wiring. 
						

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Dimensions 
DPD72001 - Single Axis Driver Pack
DPD72002 - Dual Axis Driver Pack 
						

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13 Pin Terminal Description
Pin # Description
1 Motor, Phase 1
2 Motor, Phase 3
3 Motor, Common 1, 3
4 Fault Reset
5 Direction (CCW)
6 Clock (CW)
7 0VDC
8 Half-Step/Full Step
9 On/Off
10 Fault Out
11 Motor, Common 2, 4
12 Motor, Phase 2
13 Motor, Phase 4
Motor Compatibility
Standard Motors High Torque Motors
Part Number Unipolar Rating
23D104_ 2.0A
23D108_ 4.0A
23D209_ 4.5A
23D309_ 4.5A
34D106_ 3.0A
34D109_ 4.5A
34D207_ 3.5A
34D213_ 6.5A
34D314_ 7.0A
42D112_ 6.0A
42D212_ 6.0A
Part Number Unipolar Rating
23L206_ 3.0A
23L210_ 5.0A
23L306_ 3.0A
23L310_ 5.0A
34N108_ 4.0A
34N112_ 6.0A
34N207_ 3.5A
34N214_ 7.0A
34N307_ 3.5A
34N314_ 7.0A
42N115_ 7.5A
Add suffi x “S” for single-ended shaft, or suffi x “D” for double-ended shaft.
Notes: Other motors not listed above may be compatible with this driver.
Anaheim Automation carries a full-line of standard and high torque step motors.  Contact the factory 
regarding compatibility.  See last two pages for speed/torque curves. 
						

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Specifi cations
Control Inputs (All): (Terminals 5, 6, 8, 9)
TTL - Compatible
Logic “0” = 0-0.8V
Logic “1” = 3.5 to 5.0V
Fault Reset: (Terminal 4)
Pulled up to +5VDC through a 10k Ohm
Logic “1” (open) - Driver enabled and Fault detection enabled
Logic “0” - Reset a Fault condition (driver is disabled when this input is low).  This input must be held low 
for at least 100ms.
Clock Inputs: (Terminals 5 and 6)
Pulse required; 15 microseconds minimum.  The clock input is pulled up/down internally to +5VDC/0VDC 
through a 10k Ohm resistor, based upon JP2 selection.
Direction Control: (Terminal 5)
Pulled up to +5VDC through a 10K Ohm
Logic “1” (open) - Half-Step
Logic “0” - 2 Phase Full-Step    
Power ON/OFF: (Terminal 9)
Logic “1” (open) - Motor Current on
Logic “0” - Motor Current off
Output Current Rating: 
(Terminals 1, 2, 3, 11, 12, and 13)
10 Amps/phase maximum operating current, 7.0 Amps/phase maximum standstill current, over the op-
erating voltage and temperature range.  Motor phase ratings of 1.0 Amp minimum are required to meet 
the minimum kick level. 
						

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Troubleshooting
If a Fault occurs, reset the Fault by applying a logic “0” to the Reset Fault Input (terminal 4) for at least 
100ms (or by cycling power OFF for at least 15 seconds).  After resetting, try to run the motor again.  If 
the driver faults again then check the conditions listed below.
Is the LED Blinking Slowly? (once a second)
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 transistors should be checked (see below).
Is the LED Blinking Quickly? (three times a second)
This indicates that there is an open or intermittent 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 LED On Steadily?
This indicates that there is a ground fault - a voltage shorted to 0V.  This defection is useful in detecting a 
short to case in a motor when the motor’s case and the driver’s 0V are both connected to earth ground.  
Excessive noise on the 0V line may also cause the driver to sense this type of fault.  This type of fault 
sensing may be disabled by placing jumper JP3 in position “1-2”.  Note: If the ground fault detection is 
disable, do not connect the driver’s 0V to earth ground.
Checking Output Transistors
1.  Remove the side plate.
2.  Set the multimeter to Diode Test.
3.  Place the RED lead on (between) the Sense Resistors (Labeled Rs in Figure 5.)
4.  Touch the BLACK meter lead to each phase (Terminals 1, 2, 12, and 13).
5.  This should give readings between 0.450V and 0.550V.
6.  If any readings are signifi cantly less than 0.450V, then the unit has been damaged.
If a factory repair is required, contact Anahiem Automation for an RMA#
(800) 345-9401 or (714) 992-6990 
						

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Torque Speed Curves