CUI DEVICES | SERIES: NEMA11-AMT112S | DESCRIPTION: STEPPER SERVO MOTOR

date 08/05/2022 | page 2 of 6

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AMT112S 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

output high level

VDD-0.1

V

output low level

0.1

V

output current (per channel)

15

mA

rise/fall time

8

ns

INCREMENTAL CHARACTERISTICS

parameter

conditions/description

min

typ

max

units

channels

CMOS Voltage: A, B, Z

waveform

CMOS voltage square wave

phase difference

A leads B for CCW rotation (viewed from front)

quadrature resolutions1

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

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

PPR

index2

one pulse per 360 degree rotation

accuracy

0.2

degrees

quadrature duty cycle

50

%

Notes:

1. Resolution programmed with AMT Viewpoint™ PC software. Default resolution set to 400 PPR.

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

MECHANICAL

parameter

conditions/description

min

typ

max

units

weight

15.7

g

rotational speed (at each

resolution)

48, 96, 100, 125, 192, 200, 250, 256, 384, 400, 500, 512,

800, 1000, 1024, 2048

8000

RPM

360, 768, 1600, 2000, 4096

4000

RPM

2500

2500

RPM

ENCODER WAVEFORMS

Z

A

B

I

P

T

S S S S

Quadrature signals with index showing

counter-clockwise rotation

Figure 1

Parameter

Description

Expression

Units

T

period

360/R

mechanical degrees

P

pulse width

T/2

mechanical degrees

I

index width

P/2

mechanical degrees

S

A/B state width

P/2

mechanical degrees

The following parameters are defined by the resolution selected for each encoder,

where R = resolution.

Additional Resources: Product Page | 3D Model