BH-
MSD
User’s Manual
For
-8A Micro Stepping Driver
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
2
WARNING:-DO NOT GIVE DIRECT SUPPLY OF 230 VAC. AS THIS WOULD
DAMAGE THE DRIVE. PLEASE USE THE TRANSFORMER OF OUPUT RANGE
120VAC FOR THIS DRIVE.REFER OUR 120 VAC TRANSFORMER MODEL BH-120
VOLTS AC.
Product Number code for Micro step drive
BH MSD 8A
8 Amp
MICRO STEP DRIVE
BHOLANATH
1. DC Power input : AC Power input:110 VAC~220 VAC
2. Output Current: 0.5 Amp-8 Amp
3. MICRO Stepping: 1, 2, 4, 8, 16, 32, 64, 128, 256, 5, 10, 20,
25, 40, 50, 100, 200, 256
4.Protect form: overheat, lock automatic half current, error connect protect
5.Dimension: 195mmx107mmx81mm
6. Weight: 1500g.
7. Working environment:Temperature-15~40⁰C Humidity<90%
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
3
Table of Contents
1. Introduction, Features and Applications
........................................................... 4
Introduction
.............................................................................................. 4
Features
.................................................................................................... 4
Applications
.............................................................................................. 4
2. Specifications
............................................................................................... 4
Electrical Specifications
.............................................................................
4
Model no:-BH-MSD-8A
....................................................................
4
Drive prevention
........................................................................................ 4
Operating Environment
.............................................................................. 4
Elimination of Heat
....................................................................................
5
3. Pin Assignment and Description
...................................................................... 5
Connector P1 Configurations
...................................................................... 5
Connector P2 Configurations
......................................................................
5
External Limiting Resistance ................................................................................
5
Full current And Half current ............................................................................... 5
Wiring Notes ......................................................................................................... 6
Switch Choice ....................................................................................................... 6
4. Sequence Chart of control Signals
...................................................................
6
5. Calculation Of pulse Frequency
...................................................................... 7
Frequency with Different RPM At 400 Micro Step .............................................. 7
Frequency with Different RPM At 800 Micro Step .............................................. 7
6. Connecting the Motor
.................................................................................... 7
Connections to 4-lead Motors
...................................................................... 7
Connections to 6-lead Motors
...................................................................... 7
Half Coil & Full Coil Configurations
.................................................... 8
Connections to 8-lead Motors
............................................................... 8
Series Connections
.............................................................................. 8
Parallel Connections
........................................................................... 8
7. Power Supply Selection
................................................................................. 9
Regulated or Unregulated Power Supply
....................................................... 9
Multiple Drivers
........................................................................................ 9
8. Troubleshooting
............................................................................................ 10
9. Dimensions
................................................................................................ 11
10. . Circuit connections Of BH MSD 8A With BH SDC-01,02
......................... .
12
11. Circuit connections of BH MSD 8A With Arduino & PLC
............................. .
13
12. Frequently Asked Questions
.......................................................................
14
13. Contact Us
................................................................................................ 14
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
4
1. Introduction, Features and Applications
Introduction
Micro stepping driver is particularly suitable for the applications desired with extremely low noise
and low temperature rise technology which significantly improve the performance of the stepper
motor that leads to low temperature rise, low vibration. With the adjustment technology (step/rev and
current) according to different motors, the driven motors automatically generate optimal parameters
for different motors, and achieve the best performance at higher speed. It is suitable for driving 2phase and 4-phase hybrid stepping motors.
Features
High performance, cost-effective
Suitable for 2-phase and 4-phase motors
Support PUL/DIR and CW/CCW modes
Short-voltage, over-voltage, over-current and short-cicuit protection
Low temperature rise, smooth motion
Pulses Response Frequency Can Reach 200KHz
Applications
Suitable for a wide range of stepping motors, from NEMA size 17 to 34. It can be used in various
kinds of machines, such as X-Y tables. And a variety of large-scale automation equipments and
instruments. For example: labeling machine, cutting machine, packaging machine, plotter, engraving
machine, CNC machine tools and so on. It always performs well when applied for equipment which
requires for low-vibration, low-noise, high-precision and high-velocity.
2. Specifications
Electrical Specifications
Model No:-BH-MSD-8A
Parameter
Min Typical
Max Unit
Input
Voltage(DC)
-
-
- VDC
Input
Voltage(AC)
110
-
220
VAC
Output current
0.5
-
8
A
DRIVE PREVENTION :-
NOTE:-THE ABOVE VOLTAGE AND CURENT MAY DIFFER BUT IT IS RECOMMENDED TO USE ABOVE
VOLTAGE AS IT WILL PREVENT DRIVE FROM DAMAGE AND AS FOR CURRENT IT MAY DIFFER AS PER
MICROSTEP DRIVE.
Operating Environment
Cooling Natural cooling or Forced cooling
Operating Environment Environment-Avoid dust, oil fog, corrosive gases
Temperature- -10℃℃℃℃ －－－－ 45℃℃℃℃
Humidity-Not Condensation,No Water Droplets
Operating Temperature- -10℃℃℃℃----45℃℃℃℃
Storage Temperature
-20℃℃℃℃ －－－－ 65℃℃℃℃
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
5
Elimination of Heat
Driver’s reliable working temperature should be <70
℃℃℃℃
, and motor working temperature
should be <80
℃℃℃℃
;
It is recommended to use automatic idle-current mode, namely current automatically reduce
to 60% when motor stops, so as to reduce driver heating and motor heating;
It is recommended to mount the driver vertically to maximize heat sink area. Use forced
cooling method to cool the system if necessary.
3. Pin Assignment and Description
The driver has two connectors namely P1 & P2, Connector P1 for control signals connection,
Connector P2 for power and motor connections. The following tables are brief descriptions of the two
connectors.
Connector P1 Configurations
Pin Function Details
PUL+,CP+ PULSE SIGNAL POSITIVE
PUL-,CP- PULSE SIGNAL NEGATIVE
DIR+,CW+ DIRECTION SIGNAL POSITIVE
DIR-,CW- DIRECTION SIGNAL NEGATIVE
ENA+,FREE+ ENABLE SIGNAL POSITIVE
ENA-,FREE- ENABLE SIGNAL NEGATIVE
Connector P2 Configurations
Pin Function Details
AC AC POWER SUPPLY
AC GROUND
A+,A- MOTOR PHASE A
B+,B- MOTOR PHASE B
PE GROUND TERMINAL FOR DRIVER
EXTERNAL CURRENT LIMITING RESISTANCE:
Signal current in both the“+” “-”ports,
can’t be too big and not too weak. It is necessary to connect current-limiting resistor in external if the
signal amplitude is too strength, refer to following table
VOLTAGE LIMITING RESISTANCE(R )
5 V R=0
12 V R=1KΩ
24 V R=2.2 KΩ
NOTE: FULL CURRENT AND HALF CURRENT CHOICE: (PORT SW 5)
FULL CURRENT:-IF THE DRIVER IS IN FULL CURRENT MODE THIS WILL LEAD TO MOTOR HEAT AND IT
WILL ALSO DAMAGE THE DRIVER.
HALF CURRENT:-THE DRIVER SHOULD ALWAYS BE IN HALF CURRENT MODE AS THIS WILL REDUCE
THE HEAT OF MOTOR AND DRIVER.
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
6
Wiring Notes
To prevent noise incurred in PUL/DIR signal, pulse/direction signal wires and motor wires
should not be tied up together. It is better to separate them by at least 10 cm, otherwise the
disturbing signals generated by motor will easily disturb pulse direction signals, causing
motor position error, system instability and other failures.
If a power supply serves several drivers, separately connecting the drivers is recommended
instead of daisy-chaining.
It is prohibited to pull and plug connector P2 while the driver is powered ON, because there is
high current flowing through motor coils (even when motor is at standstill). Pulling or
plugging connector P2 with power on will cause extremely high back-EMF voltage surge,
which may damage the driver.
Switch Choice: (“ON=0，OFF=1”)
1.Microstepping choice:
SW 7 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
SW 8 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
SW 9 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
SW 10 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
MICROSTEP 1 2 4 5 6 8 10 16 18 20 32 40 50 64 128 256
2. Current choice
：：：：
SW 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
SW 2 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0
SW 3 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0
SW 4 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
CURRENT(A) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8
4.Sequence Chart of Control Signals
In order to avoid some fault operations and deviations, PUL, DIR and ENA should abide by
some rules, shown as following diagram
:
NOTE: Enable signal is always high in this drive. Any external supply of 5 Vdc applied will disable
the Drive.
Page |
7
Remark:
a)
t1: ENA must be ahead of DIR by at least 5
connected). See “
Connector P1 Configurations
b)
t2: DIR must be ahead of PUL effective edge by 5
c)
t3: Pulse width not less than 1.5
d)
t4: Low level width not less than 1.5
5
. CAL
CULATION OF PULSE FREQUENCY
If need 60 RPM at 400
Then Frequency
TABLE :-(a)
Frequency With Different RPM At 400 Micro S
RPM
60
120
FREQUENCY(Hz)
400 800
TABLE :-( b)
Frequency With Different RPM at 800 Micro S
RPM
60
120
FREQUENCY(Hz)
800 1600
6. Connecting the Motor
Connections to 4-
lead Motors
4 lead motors are the least flexible but
inductance.
Connections to 6-
lead Motors
Like 8 lead stepping motors, 6 lead motors have two configurations available for high speed or high
torque operation. The higher speed configuration, o
of the motor’
s inductor windings. The higher torque configuration, or full coil, uses the full windings
of the phases.
Website:
E-mail id:-
support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
µ
s. Usually, ENA+ and
” for more information.
µ
s to ensure correct direction;
µs;
µs.
:-
F = (RPM X MICRO STEP)/60 Hz
Micro Step (Half Step Setting)
= (60X400)/60
= 400Hz
tep
180 240 300 360 420
1200
1600
2000
2400
2800
tep
If need 60 RPM at 800 Micro step
Then Frequency = (60X800)/60
= 800Hz
180 240 300 360 420
2400
3200
4000
4800
5600
easiest to wire. Speed and torque will depend on winding
r half coil, is so described because it uses one half
-www.bholanath.in
ENA- are NC (not
480 540
3200
3600
480 540
6400
7200
Page |
8
Half Coil Configurations
As previously stated, the half coil configuration uses 50
lower inductance, hence, lower torque output. Like the parallel connection of 8 lead motor, the torque
output will be more stable at higher speeds. This
6-le
ad motor half coil (higher speed) connections
Full Coil Configurations
Lower speeds is desired. This configuration is also referred to as full chopper. In full coil mode, the
motors should be run at only 70% of thei
NOTE:
THE ABOVE CONFIGURATIONS IS FOR CONNECTI
MICROSTEP DRIVE AS PER APPLICATION/
MICROSTEP DRIVE.
Connections to 8-
lead Motors
8 lead motors offer
a high degree of flexibility to the system designer in that they may be
connected in series or parallel, thus satisfying a wide range of applications.
Series Connections
A series motor configuration would typically be used in applications where a higher to
at lower speeds is required. Because this configuration has the most inductance, the
performance will start to degrade at higher speeds. In series mode, the motors should also
be run at only 70% of their rated current to prevent
Parallel Connections
An 8 lead motor in a parallel configuration offers a more stable, but lower torque at lower speeds. But
because of the lower inductance, there will be higher torque at higher speeds.
Website:
E-mail id:-
support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
% of the motor phase windings. This gives
configuration is also referred to as half chopper.
r rated current to prevent overheating.
6-
lead motor full coil (higher torque) connections
NG IN A BIPOLAR
NON-
AVAILABILITY OF A UNIPOLAR
overheating.
8-lead motor series connections
FOR HALF COIL CONNECTION
CONNECT (A+)-
A Com & (B
A Com-(A-
) & B Com
FOR FULL
COIL CONNECTION
CONNECT (A+)-
(A
LEAVE A Com & B Com OPEN
-www.bholanath.in
rque
+)- B Com/
-(B-)
-) & (B+)-(B-)
Page |
9
7. Power Supply Selection
The Microstep Driver can match Large and small size stepping motors (from Nema size 17 to Nema
size 34
). To achieve good driving performances, it is important to sele
current properly. Supply voltage determines the high speed performance of the motor, while output
current determines the output torque of the driven motor (particularly at lower speed). Higher supply
voltage will allow higher m
otor speed to be achieved, at the price of more noise and heating. If the
motion speed requirement is low, it
improve reliability.
Regulated or Unregulated Power Supply
Both regulated an
d unregulated power supplies can be used to supply the driver. However,
unregulated power supplies are preferred due to their ability to withstand current surge. If regulated
power supplies (such as most switching supplies.) are indeed used, it is importan
current output rating to avoid problems like current clamp. On the other hand, if unregulated supply is
used, one may use a power supply of lower current rating than that of motor (typically 50%
motor current). The reason is that the driver draws current from the power supply capacitor of the
unregulated supply only during the ON duration, but not during the OFF duration. Therefore, the
average current withdrawn from power supply is consid
Multiple Drivers
It is recommended to have multiple drivers to share one power supply to reduce cost, if the
supply has enough capacity. To avoid cross interference,
supply input pins of the dri
vers. (Instead, please connect them to power supply separately
8. Troubleshooting
1. The status on light’s indication
RUN: green, normal work light.
ERROR
: red, failure light, the motor with phase short
protection.
NOTE:
TO CHECK IF DRIVE IS OK/NOT OK, CONNECT ONLY SUPPLY (AC /DC) VOLTAGE AND
GROUND TO THE MICROSTEP DRIVE AND CHECK THE LED INDICATOR IF IT SHOWS
GREEN THEN DRIVE IS OK AND IF THE LED INDICATOR SHOWS RED THEN DRIVE IS
NOT OK.
THIS TEST SHOULD
CARRIED AND MOTOR IS NOT RUNNING
Website:
E-mail id:-
support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
8-lead motor parallel connections
ct supply voltage and output
’
s better to use lower supply voltage to decrease noise, heating and
erably less than motor current
DO NOT daisy-
chain the power
-
circuit, overvoltage and undervoltage
BE DONE
WHEN THE BELOW TROUBLE SHOOTING
.
-www.bholanath.in
t to have large
～～～～
70% of
).
IS
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
10
2. Troubles
Problems
Possible cause
Solutions
No power supply Check the power supply
Motor is not
No control signal Check the control signal
rotating
The driver is disabled
Don’t connected the enable signal
or enable the driver
Supply voltage is too high or
Check the supply voltage
too low
ALM lights
Motor line short-circuit
Check motor lines eliminate the
short-circuit
Motor line wrong connect
Check the motor wiring
Motor or drive failure
Replace the motor or drive
Motor rotates in
Motor phases connected in
Reverse the phases line
the wrong
reverse
direction
Wrong I/p direction signal Change direction setting
Motor line break
Change the phases are connected
Inaccurate
The Micro steps set incorrectly.
Set the correct segments
The motor load is too heavy. Increasing the current
Position
Control signal is interfered Eliminate interference
Power supply voltage too low
Increasing the supply voltage
Motor Stalled
Accelerating time is too short.
Extend the acceleration time
Current setting is too small Increasing the current
Motor torque is too small
Replace the motor
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
11
Problems
Possible cause
Solutions
Wrong connection for power
Check wiring of power
LED off turn
Low-voltages for power
Enlarge voltage of power
Wrong connection of stepper
Correct its wiring
Motor
doesn’t
run,
motor
without holding torque
RESET signal is effective
when offline Make RESET
ineffective
Motor
doesn’t
run, but
Without input pulse signal
Adjust PMW & s
ignal level
maintains holding torque
Too small relative to current
Correct rated current setting
setting
Motor’s holding torque is
Acceleration is too fast
Reduce the acceleration
too small
Motor stall
s
Rule out mechanical failure
Driver does not match with
Change a suitable driver
The motor
9. Dimensions
Website:-www.bholanath.in
E-mail id:-support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
Page |
12
10. Circuit connections Of BH MSD 8A With BH-SDC 01,SDC 02
Page |
13
11. Ci
rcuit Connections Of BH MSD 8
NOTE:
Enable signal is always high in this drive. Any external supply of 5 Vdc applied will disable
the Drive.
Website:
E-mail id:-
support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
A With PLC & Arduino
-www.bholanath.in
Page |
14
12.
Frequently Asked Questions
In the event that your driver doesn
is electrical or mechanical in nature. The next step is to isolate the system component that is causing
the problem. As part of this process you may have to disconnect the individual components that
up your system and verify that they operate independently. It is important to document each step in
the troubleshooting process. You may need this documentation to refer back to at a later date, and
these details will greatly assist our Technical Supp
need assistance.
Many of the problems that affect motion control systems can be traced to electrical noise, controller
software errors, or mistake in wiring.
The content in this manual has been carefully pr
responsibility is assumed for inaccuracies
We manufacture 1.8⁰
HYBRID STEPPER MOTORS of size NEMA17, NEMA23, NEMA24, and
NEMA34 in square frame and Nema 23 in Round frame and available in our product range
are
Linear Actuator Stepper Motors, Planetary Geared Stepper Motors, Stepper motors
with Brakes and Customized Stepper Motors.
Website:
E-mail id:-
support@bholanath.in
BHOLANATH PRECISION ENGINEERING PVT. LTD.
’t operate pro
perly, the first step is to identify whether the problem
ort staff in determining the problem should you
epared and is believed to be accurate, but no
-www.bholanath.in
make
Loading...