date 08/05/2022

page 1 of 11

SERIES: AMT31 | DESCRIPTION: MODULAR COMMUTATION ENCODER

cuidevices.com

ELECTRICAL

parameter

conditions/description

min

typ

max

units

power supply

VDD

4.5

5

5.5

V

start-up time1

200

ms

current consumption

with unloaded output

16

mA

single ended channels

output high level

output low level

output current (per channel)

rise/fall time

VDD-0.1

8

0.1

15

V

V

mA

ns

differential RS-422 channels

output high level

output low level

output current (per channel)

rise/fall time

3

7

11

0.1

20

20

V

V

mA

ns

Note:

1. Encoder must be stationary during start-up.

INCREMENTAL CHARACTERISTICS

parameter

conditions/description

min

typ

max

units

waveform

CMOS voltage square wave

phase difference

A leads B for CCW rotation (viewed from front)

90

degrees

quadrature resolutions2

48, 96, 100, 125, 192, 200, 250, 256, 360, 384, 400, 500,

512, 768, 800, 1000, 1024, 1600, 2000, 2048, 2500, 4096

PPR

index3

one pulse per 360 degree rotation

accuracy

0.2

degrees

quadrature duty cycle (at each

resolution)

48, 96, 100, 125, 192, 256, 384

200, 250, 360, 400, 768, 800

500, 1000, 1600

512, 1024 , 2048, 4096

2000

2500

49

48

46

50

44

43

50

50

50

50

50

50

51

52

54

50

56

57

%

%

%

%

%

%

Notes:

2. Resolutions programmed with AMT Viewpoint™ PC software. Default resolution set to 2048 PPR. Listed as pre-quadrature, meaning final number of counts is PPR x 4.

3. Zero position alignment set with AMT One Touch Zero™ module, AMT Viewpoint™ PC software, or serial commands.

FEATURES

• patented capacitive ASIC technology

• low power consumption

• U, V, W commutation phase channels

• 2, 4, 6, 8, 10, 12, 20 motor poles w/ incremental resolutions up to 4096 PPR

• resolutions and poles programmable with AMT Viewpoint™ PC software

• differential line driver versions

• digitally set zero position with AMT One Touch Zero™ module or serial commands

• compact modular package with locking hub for ease of installation

• radial and axial cable connections

• -40~125°C operating temperature

Additional Resources: Product Page | 3D Model