cui.com

date 10/13/2015

page 1 of 10

SERIES: AMT31

│ DESCRIPTION: MODULAR COMMUTATION ENCODER

ELECTRICAL

parameter

conditions/description

min

typ

max

units

power supply

VDD

4.5

5

5.5

V

start up time

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

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

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

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

PPR

one pulse per 360 degree rotation

accuracy

0.2

degrees

quadrature duty cycle

50

%

COMMUTATION CHARACTERISTICS

parameter

conditions/description

min

typ

max

units

channels

CMOS Voltage (S)

Quadrature Line Driver (Q)

Commutation Line Driver (C)

Line Driver (D)

A, B, Z, U, V, W

A, A, B, B, Z, Z, U, V, W

A, B, Z, U, U, V, V, W, W

A, A, B, B, Z, Z, U, U, V, V, W, W

2, 4, 6, 8, 10, 12, 20

CMOS voltage square wave

phase difference

WYE motor winding configurations

120

electrical

degrees

Notes:

1. Resolutions programmed with AMT Viewpoint™ PC software. Default resolution set to 2048 PPR.

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

3. Pole counts and waveform direction set via AMT Viewpoint™ PC software. Default poles set to 4 poles and counter-clockwise direction.

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

• -40~105°C operating temperature

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For more information, please visit the product page.