LZ－002－02( 1 / 8 )Product Specification
Product Name
MDH－70◇◇－21B
TypeMD－70 Series

Product No．
S52500, S52510, S52520

Specification No．
LAC17E04－3

Technical No．
LC－17E06

Date Of Issue
2017 / 05 / 25

Last Revision Date ( Revision No．)
2019 / 04 / 09 ( Rev. 3 )Product Summary
・Body diameter φ70mm
・Absolute encoder (RS422 serial communication compliant (BiSS-C format) )・Cable length 0.3m（With connector for driver (MC－110) connection）

Don’t copy or otherwise
use without our permission
MICROTECH LABORATORY INC.

LAC17E04－3

MDH－70◇◇－21B( 2 / 8 )Contents
1．Specification ……………………………………………………………………………

3

1-1．Motor Specifications……………………………………………………………

3

1-2．Encoder Specifications…………………………………………………………

5…………………………………………………………………

6……………………………………………………

7

4．Outline Drawing ………………………………………………………………………

8

2．Connection Diagram

3．Signal Timing Chart (Encoder)

MICROTECH LABORATORY INC.

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MDH－70◇◇－21B( 3 / 8 )1．Specification
1-1．Motor Specifications (1)Motor Model

MDH－70◇◇－21B
MDH－7006－21B

MDH－7012－21B

Motor TypeThree-phase AC servomotor, Permanent magnet

Rotor Poles

20 P

Input Power

DC48V

MDH－7018－21B(Driver Input)
Peak Armature Current

13 Arms

16 Arms

19 Arms

Rated Armature Current (※)

2.8 Arms

3.0 Arms

3.5 Arms

Voltage Constant

13 V/(kr/min)

23 V/(kr/min)

31 V(kr/min)

Peak Power

30 W

60 W

90 W

Peak Power Rate

24 kW/sec

83 kW/sec

147 kW/sec

1.9 Ω

1.8 Ω

3.1×10 -3 H

3.3×10 -3 H

Line Armature Resistance2.1 Ω(at 25℃)
Line Amature Inductance

2.6×10 -3 H

Armature Insulation Resistance

100MΩ or more

Armature Insulation
AC500V
Withstand Voltage
Motor Height (◇◇)

※DC500V

1 minute[06] 31.5 mm

6.55×10 -5 kg・m2
Moment Of Inertia※ J=GD2/4[12] 37.5 mm[18] 43.5 mm

8.24×10 -5 kg・m2

9.92×10 -5 kg・m2

Maximum Speed

200 r/min

Rated Speed

200 r/min

Peak Stall Torque

1.0 N･m

2.2 N･m

3.1 N･mRated Stall Torque0.36 N･m

0.66 N･m

1.0 N･mContinuous Rated Torque0.36 N･m

0.66 N･m

1.0 N･mTorque Constant (at 25℃)

0.13 N･m/Arms

0.22 N･m/Arms0.30 N･m/Arms

Maximum Shaft Loads Radial load Fr：500N 、Axial load Fa：250N
Load Reference
27.0 mm
Point Distance La

33.0 mm

38.9 mm※ Rated armature current is the value measured with the standard heat sink attached to the motor at an ambient temperature of 40℃

MICROTECH LABORATORY INC.

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MDH－70◇◇－21B( 4 / 8 )1．Specification
1-1．Motor Specifications (2)Motor Model

MDH－70◇◇－21B
MDH－7006－21B

MDH－7012－21B

MDH－7018－21B

Operating Environment

Temperature：0℃～＋40℃、Humidity：10%～85%RH (However、without condensation)

Storage Environment

Temperature：－20℃～＋60℃

Vibration ResistanceEndurance 25 m/s2 (About 2.5G) 10Hz～400Hz

Shock ResistanceEndurance 300 m/s2 (About 30G)
3 times each in the XYZ direction (Except for the impact on the shaft)

Thermal ClassB typeStandard Heat Sink Size

225×225×8 Aluminum

Cable

Motor cable ：Outer diameter φ4.2(3 cores)fluorine wire、bent insulated shield cable(300mm)
Encoder cable：Outer diameter φ4.2(14 cores)fluorine wire、bent insulated shield cable (300mm)

Mass

530 g (Cable included) 650 g (Cable included) 770 g (Cable included)Outline Drawing

See attachment

Accessories

None

Notices

None

MICROTECH LABORATORY INC.

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MDH－70◇◇－21B( 5 / 8 )1．Specification
1-2．Encoder Specifications
Motor Model

MDH－70◇◇－21B

Encoder Model

MA－59－2097152N1Detection Type

Absolute type / Batteryless specification

Code

Binary code

Resolution

2097152 (Single turn)

Communication Method RS422 serial communication compliant (BiSS-C format)
Encoder Power

DC5V±5%

Supply Voltage
Current Consumption 100 mA or less (at no load)
VOH = 2.5V or more、VOL = 0.5V or less、IO = ±20mA or less
Output Capacity(DATA)VOH = 2.0V or more、VOL = 0.8V or less
Input Capacity(CLK)
Notices

None

MICROTECH LABORATORY INC.

LAC17E04－3

MDH－70◇◇－21B( 6 / 8 )2．Connection Diagram

・Motor cable
Color

RedWhiteBlack

ShieldSignalU phaseV phaseW phase－・Encoder cable (Absolute signal)
Color

Red

PurpleGreen

ShieldSignalVcc

DATA

CLK－ColorBlack

Purple/Black

Green/Black

Signal0V/DATA/CLK

MICROTECH LABORATORY INC.

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MDH－70◇◇－21B( 7 / 8 )3．Signal
Timing Chart(Encoder)

MICROTECH LABORATORY INC.

LAC17E04－3MDH－70◇◇－21B( 8 / 8 )4．Outline Drawing

MICROTECH LABORATORY INC.