DC12~48V(±10%), rated current 20Ax2

MD400T
BLDC Motor Driver Specification Sheet
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 MD400T Spec.

1. Name of MD400T

MOT2(M+, M-, OUT)

REGEN. RESISTOR

CLUTCH2

CLUTCH1

PWR_SW

PWR(Vpp, Gnd)
DIP_SW

MOT1(M+, M-, OUT)

COM

CTRL

HALL1

ENC1

HALL2

SS/SD, LOAD, LED(STATE, ALARM1, ALARM2)

ENC2

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 MD400T Spec.

2. MD400T size

3. MD400T features

2ch DC motor drive, 4-Q (Quadrant) PWM servo controller (for motor with encoder)
Selection of various modes such as RS485, RS232, 0~5V analog input, etc.

12~48VDC, operation by a single power source

Servo driving by installing multi-step speed input

(STEP MODE) encoder up to 7 levels

Regenerative braking resistor can be installed when using power devices such as SMPS.

Input curve pitching (set 2 sections of low-speed section and high-speed section and set each slope separately) If there

is no motor movement and an output above a certain level is detected, a stall alarm

Prevents phase short circuit, overvoltage, low voltage, and high temperature of the

motor Differentiated the number of times the alarm LED blinks according to the controller status

Change of internal parameters and remote control by communication program (MDUI)

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 MD400T Spec.

4. Specifications for each controller (OP->Option)

TTL232/ PULSE_ POW_S

Controller Voltage(VDC) Current (A) RS485 CAN ENC RC_IN CLUTCH
(RS232) IN W

DMD50 12~24 3 ○

DMD50C 12~24 3.5 ○ ○

DPNT50 12~24 3x2 ○ ○

DMD100 12~24 5 ○

DMD200 12~48 10 ○ ○ ○

DMD400 12~48 20 ○ ○ ○ ○ ○ ○ ○

DMD400T 12~48 20x2 ○ ○ /( ○ ) ○ ○ ○ ○ ○ ○

DMD750 24-72 30 ○ ○ ○ ○ ○ ○ ○ ○

DMD1K 12~48 50 ○ ○ ○ ○ ○ ○ ○ ○

DMD2K 24-48 100 ○ ○ ○ ○ ○ ○ ○

DMDA200 90~310 1.5 ○ (OP) ○ ○

DMDA400 90~310 2.5 ○ (OP) ○ ○ (OP) ○

• PULSE_IN: 0~400kpps Speed control by pulse input RC

• Servo input: Wireless controller (RC) input

• ENC: Encoder input for servo control CAN:

• CAN communication (Extended mode only)

• TTL232/ RS232: TTL level RS232 port (G, Rx, Tx, 5VDC) or RS232 CLUTC: Port for

• controlling the electronic clutch (brake) mounted on the motor (G, Vpp) RS485: RS485

• communication connector (G, 485+) , 485-)

5. Input, output

Item Contents Remark

External size Width x Length x Height (127x166x42.5)

Controller input/output DC12~48V(±10%), rated current 20Ax2ch No voltage inflow over 60V

Driving target For DC12~48V, DC Motor

Input signal type: Pull-up, Output signal type: Open-collector Speed

Control
control range: 50~5,000rpm Speed fluctuation rate: ±1% or less

RS485 1ch, CAN 1ch, RS232 1ch, TTL232 1ch

Communication PLC linked control
Baudrate: 19,200bps, 1stop bit, no-parity

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 MD400T Spec.

6. Specification and Protection Function

denomination Color Number of flashes Contents (Refer to the figure below)

0, ENC fail When the encoder is installed and set, it is ON for abnormal encoder signal.

1, Over load In case of system overload, blinks every 1 sec.

2, Short circuit In case of exceeding the upper limit of the specification voltage range, detection of a short circuit in the

ALARM RED 3, Over voltage motor phase or a sudden current exceeding 30% of the rated current

4, Low voltage If a value below the lower limit of the specification voltage range is detected, an

5, Control fail error of more than 15% of the reference speed is maintained for more than 5

6, Over temperature seconds.

STATUS GREEN 1, Normal status Flashes in 1 second cycle in normal operation

Flashing pattern (2, example in case of short circuit)

7. DIP switch specification

DIP name Pin number denominationContents Remark

One INV Encoder polarity reversal

Select 1Q or 4Q (required for servo control) control

2 1Q Default: 4Q
ON: Operates as 1Q, OFF (default): 4Q

Motor is controlled by open-loop. Output in proportion to the variable Open-loop,

3 OPEN
resistance value set by the user without using speed feedback. Closed-loop
4Pin dip
When ON, DIR signal for direction setting of CTRL connector is operated as
Switch,
CW signal and START/STOP signal is operated as CCW signal. Up and down such as a lift or
DIP_SW
Motor state CW(DIR) CCW(START/STOP) Left and right

4 CHG Stop OFF OFF Limit switch and

CW rotation ON OFF Safety in conjunction with

CCW rotation OFF ON Apply if used

Bae ON ON

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 MD400T Spec.

8. Type of input signal and output signal

Set the resistance value so that no more than 10mA of current flows through the pull-up

resistor. Ex) In case of 24VDC input, the minimum resistance should be 24V/0.01A = 2.4kΩ.

9. Motor and other connector specifications (G: Ground, 0V)

Connector name pin denomination Contents Remarks (external harness)

HALL1, HALL2 1~ Hu(A), Hv(B)

Step speed signal input, 7 step speed input
MOLEX 3 Hw(C) MOLEX, 5264-05

5267-05 4,5 G, 5VDC Hall sensor power

No MOT and POWER connector (6mm^2 for power wire, 14AWG for motor wire, U, V, W) MOT

(motor power line): U(M+, RED), V(M-, WHITE), W(OUT , BLACK)

PWR(Power input line): G(BLACK), V+(RED, 12~48V)

ENC1, ENC2 1~ G, B, A,
Encoder input connector SMH250-05
SMAW250-05 5 5V, Z

CLUTCH1, 2 C1, C2 The operation relay contact output of the electronic clutch attached to the motor
One,
MOLEX, Coil side, is ON when the motor starts to run,
2
5566-02 Power side OFF after motor stops

One Gnd Ground(Orange/White)

COM 2 5V DC5V for MDTS (Orange) TTL232

RJ45 3 RxD RxD signal (green/white)

(HA-108- 4 485- RS485- signal (blue)

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 MD400T Spec.

NENL) 5 485+ RS485+ signal (blue/white)

(T568B 6 TxD TTL232 TxD signal (green)

connection) 7 CAN_H CAN HIGH (Brown/White)

8 CAN_L CAN LOW (brown)

PWR_SW Control power

1,2 Control power is supplied only when No. 1 and No. 2 are connected. MOLEX, 5264-02
MOLEX,5267-02 connect

REGEN.
Braking resistance External regenerative braking resistor connection connector
RESISTOR 1,2 MOLEX, 5557-02
connect Internal regenerative braking resistor is 5W, 20Ω installed
MOLEX,5566-02

One 5V Ground

2 SPEED_IN1 Analog speed input of motor 1 (0~5V)

3 RUN/BRK1 RUN/BRAKE input of motor 1

START/
4 START/STOP input of motor 1
STOP1

DIR1
5 Direction input of motor 1
(CW/CCW1)

6 Gnd Ground

7 INT_SPEED1 In case of ON, speed input of motor 1 with LOAD variable resistor Receive

8 RS232_RxD RS232C communication

9 ALM_OUT1 Alarm output of motor 1

10 RC_IN1 RC servo input for motor 1

Pulse frequency speed input for motor 1

11 PULSE_IN1
0~400Khz (0~maximum set speed)

12 CTR_OUT1 Pulse output ground proportional to the speed of

CTRL 13 Gnd motor 1

DSUB 25PIN 14 SPEED_IN2 Analog speed input of motor 2 (0~5V)

START/
15 START/STOP input of motor 2
STOP2

DIR2
16 Direction input of motor 2
(CW/CCW2)
17 RUN/BRK2 Motor 2's RUN/BRAKE input
18 ALM_RST alarm reset signal
19 INT_SPEED2 When ON, speed input of motor 2 with LOAD variable resistor Sends

20 RS232_TxD RS232C communication

21 ALM_OUT2 Alarm output of motor 2

22 RC_IN2 RC servo input for motor 2

Pulse frequency speed input for motor 2
23 PULSE_IN2
0~400Khz (0~maximum set speed)

24 CTR_OUT2 Pulse output proportional to the speed of motor 2

25 BUSY Output ON (Low level) when motor 1 and motor 2 move

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 MD400T Spec.

10. START/STOP and RUN/BRAKE signal status and motor driving condition

START/STOP RUN/BRAKE Driving condition

ON(L) ON(L) Normal operation

ON(L) OFF(H) Immediate stop

OFF(H) ON(L) Natural stop due to inertia of motor and load

To start the motor, turn RUN/BRAKE ON and START/STOP ON, set the desired speed direction to DIR
(CW/CCW), and supply speed input to SPEED_IN (variable resistance or direct voltage input).

If RUN/BRAKE is turned off while the motor is starting, the motor stops immediately and

If START/STOP is turned OFF when the RUN/BRAKE signal is ON, the motor stops naturally.

11. How to connect the MOT(OUT) terminal

The load is tightened as shown in the figure below.

The output terminal (OUT) is driven by Open-Collector type.
Use by supplying power to one side of the load and connecting the other side to the OUT
terminal. It is ON when there is motor speed or control output.
When this output is used by the user for communication, 0~100% PWM output is given according to the
commanded value (0~1023).

OUT
Controller Load V(+)

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 MD400T Spec.

12. Detailed description of CTRL connector

number Signal name/description direction Contents

6, 13 GND Black Ground

INT_SPEED ON: Set the speed using the internal volume (LOAD/SPEED).

7, 19 Speed input IN OFF: The speed uses an external volume and the LOAD/SPEED signal limits the

Selection maximum current of the motor.

When there is a warning due to the controller's alarm signal or overload, the signal line turns ON

ALM_OUT (High) and the alarm LED turns on.

9, 21 OUT
Alarm output In normal operation, it is OFF (low level), and the alarm LED turns off. In case

of driving the alarm signal in reverse, it is set by communication.

Pulse output according to BLDC motor rotation

CTR_OUT The number of output pulses per rotation of the motor varies depending on the

12, 24 Speed pulse OUT number of poles of the motor. Only for 10-pole motors, the number of poles is 3

Print times, the width of the output pulses is about 0.3 ms. Print. Example) 4 poles:

6ppr, 8 poles: 12ppr, 10 poles: 30ppr, 12 poles: 18ppr.

It is used when the controller stops due to overload, and forcibly RESTART

ALM_ after removing the cause of the alarm.

18 RESET IN When this signal changes from ON to OFF state is detected,

Alarm reset Alarm reset occurs when START/STOP signal is OFF or speed input signal is

Zero (0).

Determines the speed direction of the motor. When viewed from the axial direction of the motor, when this signal

line is connected to GND, it rotates in the CW direction, and the others rotate in the CCW direction.
DIR
When the 8 pin CHG of the DIP switch is ON, the motor proceeds in the direction of
5, 16 (CW/CCW) IN
CW when the DIR signal is ON.
Direction input
In the case of communication control, it must be short-circuited with GND when driving in

the CW (-) direction to operate (used as a limit switch input).

When turned ON (L), the motor starts.

RUN/BRAKE
3, 17 IN If turned OFF while the motor is starting, it will stop immediately. If the
Brake input
signal line is OFF, the motor will not start.

When it is ON, the motor is ready to rotate.

If it is turned OFF during motor starting, it will stop naturally.

START/STOP When the #8 pin CHG of the DIP switch is ON, the START/STOP signal is
4, 15 IN
Operation enabled/disabled ON and the motor proceeds in the CCW direction.

In case of communication control, it must be shorted to GND when driving in the

CCW (+) direction to operate (use as a limit switch input).

6, 13 GND Ground

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 MD400T Spec.

SPEED_IN DC power input for speed setting. The range is 0~5V, and in this section, it is
2, 14 IN
Speed input proportionally controlled to the full speed range of the motor.

Supply DC power (DC5V), this power is supplied from the outside and used as the
One 5V OUT
power input of the variable resistor for speed input. Other uses are prohibited.

The signal line is in pull-up state internally, and it is turned off when it is L(GND), that is, when the signal line is combined with

GND, or when the potential level becomes GND level, and when it is NC (connection to GND is disconnected).

DSUB 25PIN FEMALE PLUG-FRONT VIEW

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 MD400T Spec.

13. Motor response according to input signal

When CHG signal is OFF (communication setting, PID_DIP_CHG, default OFF)

When the RUN/BRAKE signal and STAT/STOP signal are ON, the motor can be operated.

When CHG signal is ON (set by communication, PID_DIP_CHG)

When RUN/BRAKE is ON, the motor can be operated.

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 MD400T Spec.

14. Internal variable resistance

Slope of motor acceleration and deceleration (SS/SD)

Determines the slope of the acceleration and deceleration of the motor (SLOPE).

When the SS or SD variable resistance is at the maximum value, the motor reaches the maximum speed from the stop state to the maximum speed or the maximum speed to the

minimum speed in about 15 seconds, and if it is set to the minimum value less than 1 division, within about 0.1 seconds. It is possible to change the maximum input speed.

If rapid acceleration or deceleration operation is required, set the SS and SD resistance scales to 1 or less.

Input voltage of SS(Slow Start)

Current limit (LOAD)

The current limit value of the motor increases in proportion to the clockwise direction of the variable resistance and the maximum allowable current increases.

100%
Maximum current

10%

0V 0.5V 5V

Input voltage according to volume position (LOAD)

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 MD400T Spec.

15. Communication drive and controller I/O

When the controller is driven by communication, the controller, DIR (CW/CCW) and START/STOP

signals of the CTRL connector act as limit switches.

In other words, it is possible to drive in the command direction only when this signal line is connected to GND.

Driving in the CW direction requires the DIR pin to be ON, and driving in the CCW direction requires the

START/STOP pin to be ON.

When controlling a motor in a mechanically constrained situation such as LIFT, if the limit switch (Normal

Closed SW) located at both ends of the device is connected to the DIR, START/STOP signal line and driven, the

device is damaged due to malfunction or the controller Can be prevented in advance.

X: don't care
CTRL connector(DIR, START/STOP signal input)
Input direction Driving state
DIR(CW/CCW) START/STOP

ON X Driving
CW(Reverse)
OFF X stoppage

X ON Driving
CCW(Forward)
X OFF stoppage

DIR(CW/CCW)

Reverse limit switch(NC)

CW rotation

Ground(pin #1)

CCW rotation
Forward limit switch(normal-closed)

RUN/STOP

Connection diagram between limit switch and driving direction

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 MD400T Spec.

16. Input type (ANALOG/ JS/ PULSE/ RC/ THROTTLE)

The input mode is changed by communication, but in the case of RC servo input, it detects and operates itself.

Input type/ range Etc

mode Drawing
Input connector input speed Middle value (Range and input port)

In case of PWM input

ANALOG mode
0~5V 2.5V or 10KHz or more
0 Analog or PWM/ 0~max.
Duty cycle 50% duty Use of carrier frequency.
CTRL SPEED_IN
SPEED_IN

JS mode deadzone:2~3V
-max.~
One Joystick/ 0~5V 2.5V (±10%)
+ max.
CTRL SPEED_IN SPEED_IN

Pulse input By pulse input

2 0~400khz 0~max. PULSE_IN
PULSE_IN Speed control

deadzone:
RC (radio controller) min-
1.05~ 1.4~1.6ms
3 (>50Hz)/ center- 1.5ms
1.95 ms Auto detection
RC_IN max
PULSE_IN

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 MD400T Spec.

17. Fault diagnosis

If the motor operation does not operate normally, check according to the following items.

phenomenon Probable cause Measures

RUN/BRAKE and START/STOP Both RUN/BRAKE and START/STOP inputs are turned ON

Not all signals are ON. (connected to GND).

CHG is ON and RUN/BRAKE is

not ON, or Turn on the RUN/BRAKE signal and use DIR for CW drive.

Neither DIR nor START/STOP is ON. START/STOP is turned ON for CCW operation.

Internal speed setter (LOAD/SPEED)

Motor does not rotate
If use,
Does not. Turn on INT_SPEED input.
Do not turn ON INT_SPEED of

CTRL connector.

External speed setter Check if the voltage of SPEED_IN of CTRL connector is

(External variable volume) Poor. changed to 0~5V and input

Poor connection of external DC voltage. Check the connection of external DC voltage (0~5V variable voltage) Check the

connection of the Hall sensor of the motor.

The alarm LED stays on.
Check motor connector disconnection and connection failure.

Check the number of times the LED flashes. Check the LED
Stopped during the turn. Protection function operation
specifications by the number of flashes.

Out of speed control LOAD/SPEED variable volume is current

Turn the internal variable resistor LOAD/SPEED to the
Or the motor has power The direction with the lower limit
right to achieve the desired force.
none. Turn to the left

Wrong input of DIR input or

When DIR (CW/CCW) signal is ON, it rotates in the CW direction.
The motor is not connected to the specified direction.

It rotates in reverse. Depending on the reduction ratio, the rotation direction of the
It is equipped with a reducer.
reducer shaft can be changed, so reverse the DIR direction.

Between the output shaft of the motor and the load shaft. Check the shaft coupling condition, and if

The centering is wrong. possible, use a flexible coupling to fasten it.

Motor operation When affected by strong electromagnetic waves from a

Instability and vibration welding machine, etc., use a noise filter or case to shield the
Effect of noise
Big. noise. Change the signal cable to a shield wire or install a

ferrite core.

Motor setting is wrong. DIP_SW, 1~4 are set according to the number of poles and rotations of the motor.

Start/STOP signal to start motor

Motor momentarily Stop the motor with RUN/BRAKE input.
Stop.
Do not stop.
The load inertia is too large. Increase the friction load or reduce the load inertia.

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 MD400T Spec.

Match responsiveness.

Motor too
SS(SlowStart), SD volume setting
Start slow Set the volume so that the desired responsiveness comes out.
Inappropriate.
Stop
At maximum speed
According to the direction of motor rotation Set the use of the motor with the opposite speed through
Runaway stop
Inversion of the speed signal. communication (MDAS) (PID_DIP_INV, 52)
Alarm LED ON

18. History

Document version date Contents Controller version

V1.0 2018.03.01 Initial specification V1.0

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