I-CAN 3MR8 User manual

3MR8
Automation
3-PHASE STEPPER MOTOR DRIVE
Dongguan ICAN Technology Co., Ltd
User manual

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3MR8
External
Power Supply
Power Supply
Det.
Current
Det.
Motor
MOSFET
15V
reg
Switch
LED
DSP
I/O Connector
Optical
lso
ENA-
ENA+
DIR-
DIR+
PUL-
PUL+
24~75VDC
3-Phase Stepper Motor Drive 3MR8
3 Phase digital stepper motor driver
■ Features
3MR8 3phase digital stepper motor driver is a cost-effective, high performance step drives. The design
is based on advanced digital current control technology, and features high torque, low noise, and low
vibration. The running current, microstep resolution and other parameters are switch selectable. 3MR8
can be matched for 3phase 57mm and 86mm stepper motors.
●
●
●
●
●
●
●
●
●
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New ARM 32bit processor Resolution is 25600
Idle Current setting Output current reaches 7.8A
Input Voltage DC24-75 CW/CCW and CW/Dir modes switches
Torque Ripple Smoothing Signal input is 5-24VDC
Self Test and alarm function Microstep Emulation
■ Functional diagram

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Parameter
Min.
Typical
Max.
Unit
Power supply
24
48
75
VDC
Output Current
1.5
-
7.8
A
Step Frequency
1
-
200K
Hz
Step pulse width
250
-
5E+8
ns
Input Signal Voltage
3.3
5
24
VDC
10
33
1 2 3 4 5 6 7 8
N
0
1 2 3
N
0
76
22.5 25.25
4-∅3.5
3.287.5
111.6
4
3-Phase Stepper Motor Drive 3MR8
■ Electrical performance and environment indicators
● Electrical Specifications
●Environment Indicators
Heat Sinking Method
Natural cooling or fan-forced cooling
Atmosphere
Avoid dust, oily mist and corrosive air
Operating Temperature
0～40℃
Ambient Humidity
90% or less (non-condensing)
Storage Temperature
-10～70℃
Heat Sinking Method
5.9m/s² maximum
■ Dimension (Units: mm)

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PLC
●
Name
Function description
SW9～SW11
Motor parameter selection
●
Connector
Function description
V-
Power supply-
V+
Power supply+(DC24-75V)
●
Name
Function description
SW1～SW3
Running current setting
SW4
Idle current setting
SW5～SW8
Micro stepping setting
●
Name
Function description
SW12
Single/double pulse matching
SW13
Self Test
3-Phase Stepper Motor Drive 3MR8
■ System Configuration
Status LED
Control signal
Input connector
Function selection
Function selection switch 3
Function selection switch 1
Function selection switch 2
Function selection switch 3
Function selection
Switch 2
Switch 1
Power supply
Connector
DC power supply
Motor
Motor
connection
Connector
CN2
Function description
E
FG
NC
NC
U
Motor phase U
V
Motor phase V
W
Motor phase W
● Motor connector
● Function selection switches
Connector
Function description
OUT+
Alarm output signal+
OUT-
Alarm output signal-
ENA+
Enable signal input+
ENA-
Enable signal input-
DIR+
Direction signal input+/CWW pulse input+
DIR-
Direction signal input-/CWW pulse input-
PUL+
Pulse input+/CW pulse input+
PUL-
Pulse input-/CW pulse input-
Power supply connector

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U
VW
U
VW
3-Phase Stepper Motor Drive 3MR8
To change the direction of motor, customers only need to change the line sequence of one of U V W
phases.
Star connection and triangular connection are available for 3 phase motors. Star connection is for low
speed occasions and triangular connection is for high speed occasions.
Star connection Triangular connection
■ Connecting the motor

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DIR+
DIR-
ENA+
ENA-
PUL+
PUL-
DIR/CWW
VCC
PUL/CW
ENA
DIR/CWW
PUL/CW
DIR+
DIR-
ENA+
ENA-
PUL+
PUL-
VCC
VCC
VCC
ENA
DIR+
DIR-
ENA+
ENA-
PUL+
PUL-
DIR/CWW
PUL/CW
ENA
3-Phase Stepper Motor Drive 3MR8
■Control signal input
The control signal is OC input; the voltage ranges DC5-24V. The largest step frequency is 200KHz and
rising edge is valid.
Common anode
Controller Motor driver
Common cathode
Controller
Motor driver
Difference
Controller Motor driver
Enable signal
Direction signal
Pulse

DC5～24V
ALM+
ALM-
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0V
DC5～24V
ALM+
ALM-
Vu
0V
Vu
ALM+
ALM-
DC5～24V
电源 +
-
Vu
3-Phase Stepper Motor Drive 3MR8
●
Alarm signal output is OC. The maximum saturation voltage is 30V and maximum saturation current is 100mA.
Alarm signal output
Common anode
Controller Motor driver
Common cathode
Controller
Motor driver
Relay
Relay Motor driver

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S W 1 2
K
E
SW13
K
E
SW4
K
E
3-Phase Stepper Motor Drive 3MR8
■ Function setting
● Pulse Input Mode
CW/CCW mode: SW12=ON
PUL/DIR mode: SW12=OFF (factory setting)
The setting will take effect after recycle the power
CW/CCW Pulse
When pulse is input at PUL/CW terminal,
the motor will rotate by one step in one
direction.
When pulse is input at DIR/CWW terminal,
the motor will rotate by one step in the other
direction.
PUL/CW H
L
H
L
DIR/CWW
CW
CWW
Motor Motion
Above 2μs
Pulse & Direction
When pulse is input at PUL terminal, and DIR
terminal is high voltage, the motor will rotate
by one step in one direction. When pulse is
input at PUL terminal, and DIR terminal is low
voltage, the motor will rotate by one step in the
other direction.
H
L
H
L
CW
CWW
Above 2μsAbove 2μs
PUL input
DIR input
Motor Motion
Setting switch SW13 to ON after the drive is powered up will
cause the drive to perform a self test rotate the motor back and
forth, two turns in each direction, setting switch SW13to OFF
will disable this feature.
●Self Test
●
The running current of the motor driver is automatically reduced
whenever the motor hasn’t moved for 1 second. Setting the SW4
switch to ON reduces the current to 50% of its running value.
Setting this switch to OFF maintains 90% of the running current.
This 90% setting is useful when a high holding torque is required.
To minimize motor and drive heating it is highly recommended that
the idle current reduction feature be set to 50% unless the
application requires the higher setting.
Idle Current

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Peak running current
SW1
SW2
SW3
1.5A
OFF
OFF
OFF
2.0A
ON
OFF
OFF
3.0A
OFF
ON
OFF
4.0A
ON
ON
OFF
5.2A
OFF
OFF
ON
5.8A
ON
OFF
ON
7.0A
OFF
ON
ON
7.8A
ON
ON
ON
Resolution(step/r)
SW5
SW6
SW7
SW8
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
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
S W 5
K
E
S W 6 S W 7 S W 8
S W 2
K
E
S W 3S W 1
3-Phase Stepper Motor Drive 3MR8
●EN Input
The EN input enables or disables the drive amplifier. When EN input is ON the drive amplifier.
When EN input is ON the drive amplifier is deactivated. All the mosfets will shut down, and the motor will
be free.
When EN input is OFF, the drive is activated. A falling signal into the EN input will reset the error status
and activate the drive amplifier again.
●Running current
The output current of the driver is set by the SW1, SW2 and SW3 switches and can be changed as
necessary. There are 8 settings available according to the ON/OFF combination of the switches. Normally,
customers set the current same with the motor rated current.
● Microstepping
The microstep resolution is set by the SW5, SW6, SW7 and SW8 switches. There are
16 settings.

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K
E
Recommended motor
Holding
Torque(Nm)
SW9
SW10
SW11
Flange size
Recommended
voltage
57H3P4124A6
0.4Nm
ON
ON
OFF
57
24VDC
57H3P5656A6
0.9Nm
OFF
ON
OFF
24VDC
57H3P7652A3
1.2Nm
ON
OFF
OFF
48VDC
60H3P7845A3
1.5Nm
ON
ON
ON
60
48VDC
85H3P6831A3
1.6Nm
OFF
ON
ON
85
48VDC
85H3P9758A3
4.5Nm
ON
OFF
ON
68VDC
85H3P12752A3
6.0Nm
OFF
OFF
ON
68VDC
S W 9 1 0 1 1
3-Phase Stepper Motor Drive 3MR8
●Anti Resonance
To optimize the system performance to gain fastest feedback, customers are allowed to
select parameters (based on SW9, SW10 and SW11) to match the motor size, motor ind
uctance.
The recommended motors are our motors. If performance is not good after switching according to
the above tab, please contact us with motor parameters.

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3-Phase Stepper Motor Drive 3MR8
■ Troubleshooting
Situation
Possible cause
Suggestion
Motor
disabled
Motor is in EN status
Input a falling signal into the EN input.
Wrong wiring
Check the wiring and make sure connection is right
Output current is low
Set the switch to set suitable current
Microstep resolution is low
Set the resolution higher
No pulse signal input
Make sure pulse signal input
Input pulse signal is weak
Make sure the input signal voltage DC5-24V, 7-16Ma
CW and CWW signal are input simultaneously
Make sure the pulse input mode
No power supply
Make sure power supply works
Motor
motion is not
smooth
Motor speed is in resonance zone
Set the microstep resolution higher
External interference exists
Make sure the interference source and interference
position
The amount
of movement
of the motor
va ri es wi th
the set value
Microstep resolution is not right
Set the right resolution
Output current is low
Set the switch to set suitable current
Motor out of
step
Acceleration / deceleration time is too short
Set the Acceleration / deceleration time longer
Rated torque is low
Select suitable motor
Start frequency is too high
set the frequency lower when start
Current value is low
Set the current higher
Voltage value is low
Set the voltage higher
External interference exists
Make sure the interference source and interference
position

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Model
Holding
Torque(Nm)
Current/
phase(A)
Resistance
(Ω)
Inductance
(mH)
Diameter of
axle X(mm)
Axial length
L1(mm)
Motor Length
L(mm)
57H3P4124A3
0.4
2.4
3.4
4.0
6.35
20.6
41
57H3P5656A3
0.9
5.6
0.5
1.1
6.35
20.6
56
57H3P7652A3
1.2
5.2
0.5
1.4
8
20.6
76
L1 L
1.6
15
56.4±1
47.14±0.2
56.4±1
47.14±0.2
4-∅5
5
400min
0+
∅38.1_-0.012
0+
∅X_ -0.013
0 1.
0 2.
0 3.
0 4.
160 320 480 640 800 960
0 2.
0 4.
0 6.
0 8.
160 320 480 640 800 960
1 0.
0.25
0.50
0.75
1.00
160 320 480 640 800 960
1.25
0
0
0
24V
48V
24V
48V
24V
48V
3-Phase Stepper Motor Drive 3MR8
■ Recommended motor
●3 phase hybrid nema 23 stepper motor
unit:mm
Motor:57H3P4124A3
Driver:3MR8
Subdivision 20 Step/r：00
Current:2 0. A
Motor:57H3P5656A3
Driver:3MR8
Subdivision 2000 Step/r：
Current:5 2. A
Holding
Torque N.m
Holding
Torque N.m
Speed rpm Speed rpm
Motor:57H3P7652A3
Driver:3MR8
Subdivision 2000 Step/r：
Current:5 2. A
Speed rpm
Holding
Torque N.m

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Model
Holding
Torque(Nm)
Current/
phase(A)
Resistance
(Ω)
Inductance
(mH)
Diameter of
axle X(mm)
Axial length
L1(mm)
Motor Length
L(mm)
85H3P6858A3
2
5.8
0.52
1.5
12
31
68
85H3P9758A3
3.2
5.8
0.53
2.5
12
31
97
85H3P12558A3
6.0
5.8
0.87
6.1
14
31
125
L1 L
69.9±0.2
85
85
69.9±0.2
4-∅5.5
400min
23
8
2
0+
∅73_ -0.03
0+
∅X_ -0.012
0.4
0.8
1.2
1.6
160 320 480 640 800 960
2.0
0.7
1.4
2.1
2.8
160 320 480 640 800 960
3.5
1.2
2.4
3.6
4.8
160 320 480 640 800 960
6.0
0
0
0
3-Phase Stepper Motor Drive 3MR8
●3 phase hybrid nema 34 stepper motor
unit:mm
24V
48V
Motor:85H3P6858A3
Driver:3MR8
Subdivision 20 Step/r：00
Current:5 8. A
24V
48V
Motor:85H3P9758A3
Driver:3MR8
Subdivision 2000 Step/r：
Current:5 8. A
Holding
Torque N.m
Speed rpm Speed rpm
Holding
Torque N.m
24V
48V
Motor:85H3P12558A3
Driver:3MR8
Subdivision 2000 Step/r：
Current:5 8. A
Holding
Torque N.m
Speed rpm

Add:4/F, Block B, RuiLian Zhenxing Industrial
Park, Wanjiang District, Dongguan City,
Guangdong Province, China
Tel: [phone]
Fax:[phone]
ican-tech.en.alibaba.com
Website:
After sale service
Warranty period
Dongguan ICAN Technology provides warranty for 1 year from the date of shipping.
Maintenance process
1) Get the maintenance permission
2) Ship the package to the following address: 4/F, Block B, RuiLian Zhenxing Industrial Park,
Wanjiang District, Dongguan City, Guangdong Province
Tel: [phone]
Return policy
1. After use or man-made damage condition (etc, wrong wiring), no return
2. ICAN Technology guarantees the product quality, but product incompatibility is not in
the return or maintain condition.
3. Customers don’t use the products under the specified electrical performance and
environment indicators, no maintain condition
Aut o m a tion
Dongguan ICAN Technology Co., Ltd
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