Autonics MD2U Series Catalog Page
MD2U Series
Compact and High-Performance of 2-Phase Stepper Motor Driver
Features
● Unipolar constant current drive type
● Enable to brake when it stops by STOP current
adjustment
● Low speed and precise control with microstep
(MD2U-MD20)
● Insulate using photocoupler to minimize the inuence
by external noise
● Power supply: 24-35VDC
Please read “Safety Considerations”
in the instruction manual before using.
~~:____
Ordering Information
___
__JI
C €
MD2U-MD20
MD2U-ID20
SENSORS
CONTROLLERS
MOTION DEVICES
SOFTWARE
MD 202 U M D
Item
Drive method
Motor phase
RUN current
Power supply
7
Y~~R========
Step method (resolution)
20 2A/Phase
D 24-35VDC
M Micro Step (20-division)
I Intelligent type
U Unipolar drive
2 2-phase
MD Motor Driver
Specifications
Model MD2U-MD20 MD2U-ID20
Power supply
Allowable voltage range 90 to 110% of the rated voltage
Max. current consumption
RUN current
STOP current 20 to 70% of RUN current (set by STOP current volume)
Drive method Unipolar constant current drive type
Basic step angle 1 8˚/Step
Max. drive speed
Resolution 1, 2, 4, 5, 8, 10, 16, 20-division (1 8˚ to 0.09˚/Step)
Input pulse
Input resistance 300Ω (CW, CCW), 390Ω (HOLD OFF) 3.3kΩ (CW/CCW, RUN/STOP, HOLD OFF)
Insulation resistance Over 200MΩ (at 500VDC megger, between all terminals and case)
Dielectric strength 1000VAC 50/60Hz for 1 min (between all terminals and case)
Noise immunity ±500V the square wave noise (pulse width: 1μs) by the noise simulator
Vibra ion 1 5mm amplitude at frequency of 10 to 55Hz (for 1 min) in each X, Y, Z direction for 2 hours
Shock V
Environment
Approval
Weight
※
1: Since torque characteristics are improved but the driver temperature rises with the 30VDC power supply, the driver should be installed
at the well ventilated environment. Torque is variable by power supply.
※
2: Based on the ambient temperature 25
※
3: RUN current varies depending on the input RUN frequency, and the max. instantaneous RUN current varies also.
※
4: Max. input pulse frequency is max. frequency to be input and is not same as max. pull-out frequency or max. slewing frequency.
※
5: The weight includes packaging. The weight in parenthesis is for unit only.
※
Environment resistance is rated at no freezing or condensa ion.
※
1
※
3
Input pulse width Min. 10μs (CW, CCW), min. 1ms (HOLD OFF)
Duty rate 50% (CW, CCW)
Rising/Falling time Max. 0.5㎲ (CW, CCW)
Pulse input voltage [H]: 4-8VDCᜡ, [L]: 0-0.5VDC
Max. input current 4mA (CW, CCW), 10mA (HOLD OFF)
characteristic
Max. input pulse freq.
ibration 300m/s² (approx. 30G) in each X, Y, Z direction for 3 times
Ambient temp. 0 to 50℃, storage: -10 to 60
Ambient humi. 35 to 85%RH, storage: 35 to 85%RH
※
5
24-35VDC
※
2
3A
0 5-2A/Phase
-
※
4
Max. 50kHz (CW, CCW)
ᜡ
ᜡ
℃
CE:
Approx. 295g (approx. 180g) Approx. 303g (approx. 190g)
, ambient humidity 55%RH.
℃
I
1500rpm
-
I
Autonics
AA-25
(Y)
Closed Loop
Stepper System
(Z)
Stepper Motors
(AA)
Drivers
(AB)
Motion
Controllers
MD2U Series
2-Phase Micro Stepper Driver [MD2U-MD20]
Unit Descriptions
Power indicator
※
Refer to '
selection DIP switch
Function
RUN current volume
Secifications'.
Input
terminal
STOP current volume
Functions
Function selection DIP switch
● Microstep, pulse input method setting
No. Name Function
1 MS1
2 MS2
Microstep setting
IJN~~~~I
3 MS3
4 1P/2P Pulse input method
● Resolution setting (MS1/MS2/MS3)
Select the step angle (motor rotation angle per 1 pulse).
•
The set step angle is dividing basic step angle(1.8°) of 2-phase stepping motor by set resolution value.
•
E.g.) Set step angle =
Resolution
※
Change resolution setting value only when the motor stops.
Basic angle (1.8°)
Switch position
ON OFF
MS1 MS2 MS3 Resolution
ON ON ON 1 (Full-step)
ON ON OFF 2-division
ON OFF ON 4-division
ON OFF OFF 5-division
OFF ON ON 8-division
OFF ON OFF 10-division
OFF OFF ON 16-division
OFF OFF OFF 20-division
1-pulse input
method
2-pulse input
method
Motor
connection
terminal
Power
terminal
● 1P/2P
The switch is to select pulse input method.
•
1-pulse input method:
•
2-pulse input method: CW → CW rotation signal input, CCW → CCW rotation signal input.
•
CW → operating rotation signal input, CCW → rotation direction signal input ([H]: CW, [L]: CCW)
Setting RUN current
RUN current setting is for the current provided to the motor in running status.
RUN
CURRENT
I 50%
~
0% 100%
CT CT
- +
AA-26
•
※
When RUN current is increased, RUN torque of the motor is also increased.
※
When RUN current is set too high, the heat of the motor is increased.
※
Set RUN current properly for the load within the rated current range of the motor.
※
RUN current setting range: 0.5 to 2.0A
※
2.0A0.5A
RUN current setting method: Measure the voltage by connecting a DC voltage meter to both CT+ and
CT- terminals while the motor is running (max. 150rpm)
E.g.) Input voltage (3V) ×
3
※
Change RUN current only when the motor stops.
2
= 2A (motor excitation current)
Autonics
2-Phase Unipolar Stepper Motor Driver
Setting STOP current
STOP
CURRENT
20% 70%
HOLD OFF function
This signal is for rotating axis of the motor with external force or manual positioning.
•
When hold off signal maintains over 1ms as [H], motor excitation is released.
•
When hold off signal maintains over 1ms as [L], motor excitation is in a normal status.
•
※
Use this function only when the motor stops.
※
Refer to '
I/O Circuit and Connections
STOP current setting is for the current provided to the motor in stopped status, preventing severe heat
•
of the motor.
This function is for reducing the heat by variable resistance ratio setting within 0 to 100% of RUN
•
current setting range (actual setting range: 20 to 70%).
E.g.) In case of RUN current setting value is 2A and
STOP current setting value is 0% (actual setting range: 20%),
STOP current 2A × 0.2 = 0.4A
※
When STOP current is decreased, STOP torque of the motor is also decreased.
※
When STOP current is set low, the heat of the motor is also low.
※
Change STOP current only when the motor stops.
I/O Circuit and Connections'.
※
+5VDC
1: If the power for driving pulse from external is over than
+5VDC, please connect resistor at the outside.
[Signal]
300Ω
※
1
1
2
CW
(input power max. 24VDC, input current 10-20mA)
※
CW
2-pulse input method (CW rotation signal input)
1-pulse input method (operating rotation signal input)
300Ω
3
4
CCW
※
CCW
2-pulse input method (CCW rotation signal input)
1-pulse input method (rotation direction signal input)
→[H]: CW, [L]: CCW
SENSORS
CONTROLLERS
MOTION DEVICES
SOFTWARE
(Y)
Closed Loop
Stepper System
(Z)
Stepper Motors
(AA)
Drivers
(AB)
Motion
Controllers
390Ω
[Motor]
[Power]
5
6
A-com (black)
1
B-com (white)
2
A (brown)
3
A (orange)
4
B (red)
5
B (yellow)
6
DC+
DC-
HOLD
OFF
GND
+
24-35VDC
-
Motor
※
HOLD OFF
Control signal for motor excitation OFF
→ [H]: Motor excitation OFF
Autonics
AA-27
Loading...