DM422S USER MANUAL
DM422S
USER MANUAL
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DM422S USER MANUAL
Contents
1. Product Overview............................................................................................................................................1
2.Application Environment and Installation....................................................................................................... 1
2.1Environmental requirement...................................................................................................................... 1
2.2Drive installation dimensions.....................................................................................................................2
2.3Drive installation requirements................................................................................................................. 2
3.Drive Port and Connection...............................................................................................................................3
3.1Port function description........................................................................................................................... 3
3.2 Power supply input................................................................................................................................. 3
3.3 Motor connection................................................................................................................................. 4
3.4 Control signal connection........................................................................................................................ 5
3.4.1 PUL, DIR port: connection for pulse command.............................................................................. 5
3.4.2 ENA port: used to enable or disable............................................................................................... 5
3.4.3 Control signal wiring example.........................................................................................................6
4.1The setting of current................................................................................................................................ 7
4.2 The setting of pulse per revolution...........................................................................................................8
4.3Half / full flow selection............................................................................................................................. 8
5.Drive working status LED indication................................................................................................................ 8
6. Common Faults and Troubleshooting.............................................................................................................9
Appendix A. Guarantee Clause......................................................................................................................... 10
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DM422S USER MANUAL
1. Product Overview
Thank you for choosing Cloudray DM series digital stepper drive.
DM series stepper drive, which surpasses the performance of common analog stepper drive comprehensively
based on the new 32-bit DSP platform developed by TI, and adopting the micro-stepping technology and PID
current control algorithm design. The DM series stepper drives have the features of low noise, low vibration, low
heating and high-speed high torque output, it is suitable for most stepper motors by integrated with the
micro-stepping technology.
The DM 556S driver can select the running current and subdivision through the DIP switch. There are 16
subdivisions and 8 current selections. It has overvoltage, undervoltage and overcurrent protection. Its input and
output control signals are optically isolated.
Power supply 24 – 50VDC
Output Current Up to 2.2 amps（peak value）
Current control PID current control algorithm
Micro-stepping settings DIP switch settings, 16 options
Speed range Use the suitable motor，up to 3000rpm
Resonance suppression Automatically calculate the resonance point and inhibit the IF vibration
Automatically detect the motor parameter when drive initialize, optimize
Parameter adaption
the controlling performance
Support direction & pulse, CW/CCW double pulse, A/B quadrature pulse
Pulse mode
input
Pulse filtering 2MHz digital signal filter
Idle current The current is automatically halved after the motor stops running
We hope that our products with excellent performance can help you to complete the sports control program
successfully.
Please read this technical manual before using the products.
2. Application Environment and Installation
2.1 Environmental requirement
Item Cloudray DM 422S
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DM422S USER MANUAL
Installation environment Avoid dust, oil and corrosive environment
Vibration 0.5G（4.9m/s2） Max
Operating temperature/humidity 0℃ ~ 45℃ / 90% RH or less (no condensation)
Storage and transportation temperature: -10℃ ~ 70℃
Cooling Natural cooling / away from the heat source
Waterproof grade IP54
2.2 Drive installation dimensions
8.25
92.6
29
56 21
2.3 Drive installation requirements
Please install the drive vertically or horizontally, with its front facing forward, top facing upward to facilitate
cooling.
During assembly, avoid drillings and other foreign matters falling inside the drive.
During assembly, please use M3 screw to fix.
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DM422S USER MANUAL
When there is vibration source (such as a driller) close to the installation position, please use a vibrating absorber
or a vibration resistant rubber gasket.
When multiple drives are installed in the control cabinet, please pay attention to reserve enough space for
sufficient heat dissipation. If necessary, you can configure cooling fans to ensure good heat dissipation conditions
in the control cabinet.
3. Drive Port and Connection
3.1 Port function description
Function Grade Definition Remarks
V+ Input V+ power supply
Power supply input port DC 24~50V
V- Input V- power supply
B- connect two terminals of
B+ motor’s phase-B winding
Motor connection port
A- connect two terminals of
A+ motor’s phase-A winding
ENA+
Enable connection Enable control interface
ENA-
PUL+ 3.3 ~ 24V level
Pulse input interface
PUL- compatible
Pulse connection
DIR+
Direction input interface
DIR-
3.2 Power supply input
The power supply of the drive can be both AC power and DC power, and the input voltage range is 24V~50VDC.
Input power polarity should not be reversed!!!
The drive’s work mode is constant current control. The drive output the voltage to motor by changing the input
power into PWM chopping wave when it is working. In this case, the input power will affect the performance of
drive.
Power selection reference:
Voltage:
The stepper motor has the characteristic of torque decreasing as the motor speed increases, and the voltage of
the input power supply will affect the declining amplitude of the motor torque at high speed. Increasing the
voltage of the input power supply appropriately can increase the output torque of the motor at high speed. And
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DM422S USER MANUAL
use low voltage when it is low speed required, can lower motor’s heating appropriately.
Current:
The work of the drive is to convert the input power supply with high voltage and low current to the low voltage
and high current at both terminals of the motor winding.In this case, the current of power supply will be lower
than the motor’s.
The effects of regeneration voltage:
When the stepper motor is working, it also keeps the characteristics of the generator. At deceleration, the kinetic
energy accumulated by the load is converted into electric energy, which will be superimposed on the drive circuit
and the input power. In application, attention should be paid to the setting of acceleration and deceleration time
to prevent the protection of the drive or power supply.
When the drive is powered off, similarly, the drive LED indicator will be on if the load is increased to allow the
motor to move
3.3 Motor connection
A+ A+ A+
4线电机 8线串联 8线并联
A-
A- A-
B+ B+ B+
B- B- B-
4-wire motor 8-wire series 8-wire parallel
A+ A+
6线串接 NC 6线中心抽头 A-
A- NC
NC
B+ NC B+
B- B-
6-wire series 6-wire center shaft head
The matching motor of the DM 422S drive is the low resistance and low inductance hybrid stepper motor.
The common 2-phase stepper motor’s lead number are 4, 8 and 6.
There is only one connection mode for 4 leads motor.
Series and parallel connection mode are used by 8 leads motor:
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DM422S USER MANUAL
When series used, the winding inductance increased. The set of drive current should be about 0.7times than
before. This is suitable for low speed required.
When parallel used, the winding inductance decreased. The set of drive current should be about 1.4times than
before. This is suitable for high speed required.
Parallel and central tapping connection mode are used by 6 leads motor:
When parallel used, all the winding connected, and the inductance was higher. This is suitable for low speed
required.
When central tapping used, half of the winding connected, and the inductance was lower. This is suitable for high
speed required.
3.4 Control signal connection
3.4.1 PUL, DIR port: connection for pulse command
The signal interface of standard DM series drive is switch.
The upper controller can be the pulse signal generating device, such as PLC, MCU, control card and controller.
The pulse level that DM 556S drive can be used: 3.3V-24V (no need to connect resistor)
Pulse&Direction（PUL + DIR）
Dual Pulse （CW +CCW）
Orthogonal Pulse（A/B）
3.4.2 ENA port: used to enable or disable
When the default optocoupler is off, the driver outputs current to the motor. When the internal optocoupler is
turned on, the driver will cut off the current of each phase of the motor to make the motor free. At this time, the
step pulse is not responded.
The ENA input can be used to restart the drive when the motor is in an error state. First, the existing fault should
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DM422S USER MANUAL
be eliminated, and then a falling edge signal is input to the ENA terminal, and the drive can be re-energized.
The level logic of the ENA signal can be set to the opposite, with the logic being opposite to the above.4.
3.4.3 Control signal wiring example
Common anode
Common cathode
Difference
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4.1 The setting of current
The setting of DIP switches and operating parameters
The setting of current Semi / Full current option The setting of pulse per revolution
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
Peak Current Average Current SW1 SW2 SW3 Remarks
0.3A 0.2A on on on
0.5A 0.3A off on on
0.7A 0.5A on off on
1.0A 0.7A off off on Other Current
can be
1.3A 1.0A on on off custom-made.
1.6A 1.2A off on off
1.9A 1.4A on off off
2.2A 1.6A off off off
DIP SW1, SW2, SW3 are used to set current which is output from drive to motor.
Generally, the current setting is the motor rated current. If your system has high request to the heating, please
decrease the current properly to lower the motor’s heating, but at the same time, the output torque will be
lower. If you don’t need the motor running continuous, you can increase the current to higher the torque. But be
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DM422S USER MANUAL
minded that the current can not be 1.5times over than the rated current.
4.2 The setting of pulse per revolution
Stepping
SW5 SW6 SW7 SW8 Remarks
count/revolution
200 on on on on
400 off on on on
800 on off on on
1600 off off on on
3200 on on off on
6400 off on off on
12800 on off off on
25600 off off off on Other Subdivision can be custom-made
1000 on on on off
2000 off on on off
4000 on off on off
5000 off off on off
8000 on on off off
10000 off on off off
20000 on off off Off
25000 off off off off
DIP SW5, SW6, SW7, SW8 are used to set the number of pulses required per revolution of the motor.
Motor speed = command pulse frequency / per revolution pulse
Motor stroke = number of command pulses / pulse per revolution
4.3 Half / full flow selection
DIP SW4 is used to set the quiescent current value when the motor stops.
Off means that when the drive power-on pulse stops, the driver switches the current output to the motor to half
of the rotation (half-flow);
On indicates that the drive maintains the same current output as the rotation to the motor (full flow) when the
drive power-on pulse is stopped. In general use, SW4 should be set to off, so that the heat generated by the
motor and the driver is reduced, and the reliability is improved.
5. Drive working status LED indication
LED status Drive status
Green indicator is on for long time Drive not enabled
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DM422S USER MANUAL
Green indicator is flickering Drive working normally
One green indicator and one red indicator Drive overcurrent
One green indicator and two red indicators Drive input power overvoltage
One green indicator and three red indicators The internal voltage of the drive is wrong
One green and four red indicators Tracking error exceeds limits
One green and five red indicators Encoder phase error
6. Common Faults and Troubleshooting
Phenomenon Possible situations Solutions
Check the power supply circuit for normal
Power indicator is off
power supply
The motor rotor is locked but the Pulse signal is weak; increase the signal current
motor does not work to 7-16mA
The speed is too slow Select the right micro-stepping
Motor does not work
Drive is protected Solve the alarm and re-power
Enable signal problem Pull up or disconnect the enable signal
Check whether the upper computer has pulse
Command pulse is incorrect
output
The rotary direction of motor is
Adjust the DIP SW5
reverse
The steering of motor
is wrong The motor cable is disconnected Check the connection
The motor has only one direction Pulse mode error or DIR port damaged
The motor connection is wrong Check the motor connection
The motor connection and encoder
Alarm indicator is on Check the sequence of encoder connection
connection are wrong
The voltage is too high or too low Check the power supply
The position or speed The signal is disturbed Eliminate interference for reliable grounding
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is wrong Check the upper computer instructions to
The command input is incorrect
ensure the output is correct
The setting of Pulse per revolution is Check the DIP switch status and correctly
wrong connect the switches
Replace the motor and contact the
Encoder signal is abnormal
manufacturer
Short circuit between terminals Check power polarity or external short circuit
The drive terminal
Check whether there is any solder ball due to
burned up Internal resistance between
excessive addition of solder on the wire
terminals is too large
connections
Acceleration and deceleration time is Reduce command acceleration or increase
too short drive filtering parameters
The motor is out of
Motor torque is too low Select the motor with high torque
tolerance
Check the load weight and quality and adjust
The load is too heavy
the mechanical structure
The current of power supply is too
Replace the appropriate power supply
low
Appendix A. Guarantee Clause
A.1 Warranty period: 12 months
We provide quality assurance for one year from the date of delivery and free maintenance service for our
products during the warranty period.
A.2 Exclude the following:
■ Improper connection, such as the polarity of the power supply is reversed and insert/pull the motor
connection when the power supply is connected.
■ Beyond electrical and environmental requirements.
■ Change the internal device without permission.
A.3 Maintenance process
For maintenance of products, please follow the procedures shown below:
(1) Contact our customer service staff to get the rework permission.
(2) The written document of the drive failure phenomenon is attached to the goods, as well as the contact
information and mailing methods of the sender.
Mailing address:
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DM422S USER MANUAL
Post code:
Tel.:
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