CUI AMT303_13

date
03/29/2013
page
1 of 6
SERIES: AMT303 │ DESCRIPTION: MODULAR ENCODER
FEATURES
•
•
•
•
•
•
•
•
•
•
U, V, W commutation lines
small size 37 mm
line count up to 1024 PPR
optional line driver output (303LD)
single pulse index
capacitive ASIC technology
modular locking hub design for ease of installation
2, 4, 6, 8, 10, 12, or 20 pole motors
6 programmable functions
’One Touch’ commutation signal alignment
RoHS
ELECTRICAL
parameter
conditions/description
power supply
current consumption
with unloaded outputs
commutation output signals
U, V, W phase
commutation pole
2, 4, 6, 8, 10, 12, 20 (software programmable)
incremental output signals
A, B, Z (AMT303)
A, A, B, B, Z, Z (AMT303LD)
incremental output waveform
quadrature output square wave
quadrature output resolutions
96, 192, 200, 250, 384, 400, 500, 512, 800, 1000,
1024
index
one pulse per 360 deg.
quadrature output current
AMT303 (single ended) sink/source
AMT303LD (differential) sink/source
min
nom
max
units
4.5
5
5.5
V
8
10
mA
PPR
2
20
position accuracy
0.2
mA
deg
MECHANICAL
parameter
conditions/description
min
nom
max. rotational speed
mounting options
max
units
8,000
RPM
max
units
125
°C
85
%
5
G
200
G
A) 2 x M1.6 on 16 mm (0.63”) bolt circle
B) 2 x #4 on 19.05 mm (0.75”) bolt circle
C) 2 x M1.6 or M2 on 20 mm (0.787”) bolt circle
D) 3 x M1.6 or M2 on 20.9 mm (0.823”) bolt circle
with washers in option B holes
E) 3 x M1.6 or M2 on 22 mm (0.866”) bolt circle
F) 4 x M1.6 or M2 on 25.4 mm (1”) bolt circle
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
-40
humidity
non-condensing
vibration
10 ~ 500 Hz, 5 min. sweep, 2 hours each XYZ
shock
3 pulses, 6 ms, 3 each XYZ
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nom
CUI Inc │ SERIES: AMT303 │ DESCRIPTION: MODULAR ENCODER
date 03/29/2013 │ page 2 of 6
PART NUMBER KEY
For customers that prefer a specific AMT303 configuration, please reference the custom configuration key below.
AMT303XX - XXXX - XXXX - XX - XX - X
Base Number
Output Signals:
“blank” = A, B, Z, U, V, W
LD = Line Driver
A, A, B, B, Z, Z, U, V, W
Resolution (ppr):
00960500
01920512
02000800
02501000
04001024
Sleeve Bore Diameter:
2000 = 2 mm
3000 = 3 mm
3175 = 3.175 mm (1/8”)
4000 = 4 mm
4760 = 4.76 mm (3/16”)
5000 = 5 mm
6000 = 6 mm
6350 = 6.35 mm (1/4”)
8000 = 8 mm
SKIT = 8 sleve kit
Options:
“blank” = standard connector
C = locking connector
D = conformal coating with
standard connector
E = conformal coating with
locking connector
Motor Poles:
0210
0412
0620
08
Direction:
“blank” = CCW
CW = clockwise
AMT303 KITS
In order to provide maximum flexibility for our customers, the AMT303 series is provided in kit form standard. This allows the user to implement the encoder
into a range of applications using one sku#, reducing engineering and inventory costs.
SLEEVES
8mm
1/4 inch
(6.35mm)
6mm
5mm
3/16 inch
(4.76mm)
4mm
1/8 inch
(3.175mm)
3mm
2mm
Blue
Snow
Red1
Green1
Yellow1
Gray60
Purple1
Orange
Light Sky Blue
ORDERING GUIDE
AMT303XX-V
TOOL A
BASE
TOP COVER
Output Signals:
“blank” = A, B, Z, U, V, W signals
LD = Line Driver
A, A, B, B, Z, Z, U, V, W signals
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TOOL C
SHAFT
ADAPTER
CUI Inc │ SERIES: AMT303 │ DESCRIPTION: MODULAR ENCODER
date 03/29/2013 │ page 3 of 6
ENCODER INTERFACE
Standard Connector Option
Locking Connector Option
PINOUT CONNECTOR 1
Function
#
AMT303
AMT303LD
14
GND_C1
GND_C1
13
N/A
-Z
12
Z
Z
11
N/A
-A
10
A
A
9
N/A
-B
8
B
B
7
V
V
6
5 V+
5 V+
5
W
W
4
GND
GND
3
U
U
2
zero set
zero set
1
N/A
N/A
Notes:
1. GND_C is mode selection line used at
startup to determine encoder mode:
VCC/Floating: SPI Communication Mode
Ground: Normal Operation Mode
Standard use requires attaching GND_C
Pin# 14 to GND in order to get Commutation output.
SPI Communication mode allows the user to write
parameters to the encoder via SPI link, contact CUI
Inc. for more details.
Mating Connector:
Samtec ISDF-07-D
B
13 11 9
7
5
3
1
14 12 10 8
6
4
2
DETAIL B
SCALE 4 : 1
B
13 11 9
Mating Connector:
Samtec ISDF-07-D-L
5
3
1
14 12 10 8
6
4
2
DETAIL B
SCALE 4 : 1
Demo Board Side
Encoder Side
1' 0.25"
(304.8)
Samtec
ISDF-07-D
7
Demo Board Cable
(Cable available without Demo Board Connector)
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28 AWG
10 conductor
1.27 mm pitch
CUI Inc │ SERIES: AMT303 │ DESCRIPTION: MODULAR ENCODER
date 03/29/2013 │ page 4 of 6
MECHANICAL DRAWING
10.34 0.407
R15.49 0.610
15.30 0.602
15.33 0.604
37.39 1.472
28.58 1.125
10.93 0.430
A (3 PLCS)
22.00 0.866
2.00 0.079
(4 PLCS)
21.45 0.844
R2.10 0.083
12.60 0.496
19.05 0.750
2.95 0.116
(2 PLCS)
TOLERANCE:
±0.05mm UNLESS OTHERWISE
SPECIFIED
1.70 0.067
(2 PLCS)
0.55
20.90 0.823
DETAIL A
SCALE 4 : 1
25.48 1.003
16.00 0.630
18.60mm
AMT303 COMM WWYY
US Patent No. 6892590
SCALE 5:1
5.30mm
5.30mm
18.60mm
R1.20mm
AMT303LD COMM WWYY
US Patent No. 6892590
SCALE 5:1
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R1.20mm
CUI Inc │ SERIES: AMT303 │ DESCRIPTION: MODULAR ENCODER
date 03/29/2013 │ page 5 of 6
ENCODER OPERATIONAL MODE
Initialization mode:
– At power up the encoder goes through an initiation and stabilization procedure. This includes
microprocessor stabilization and the program for combining Coarse and Fine channel of the encoder for getting the absolute start position. This takes less than 0.1 seconds.
Tracking mode:
– MCU 12 bit position register is updated from Fine Asic every 48 μs.
– The commutation program in the MCU has a compensation for the average delay caused by the update rate, leaving a remaining jitter of less than 24 µs RMS.
•The communication jitter expressed in electrical degrees will be proportional speed and does not reach 6 deg RMS until the speed reaches the following values:
Commutaon Jier in Electrical Degrees
Jier (Electrical Degrees)
14
12
4 pole
10
6 pole
8
8 pole
10 pole
6
12 pole
4
20 pole
2
0
0
2000
4000
6000
8000
10000
RPM
COMMUTATION ALIGNMENT AND SETTING THE ZERO POINT
We strongly recommend the use of the AMT303 series demo board to set commutation zero. It greatly
simplifies and expedites the process. The demo board also allows setting of resolution, # of motor poles,
direction of quadrature increment, and commutation angle offset (when required). If you do not have or
cannot obtain a demo board, use the following procedure to align the AMT303XX commutation angle with your
motor:
1.
Mount the AMT303 series encoder to the motor.
2.
Put the motor in a ‘locked rotor’ condition. Consult your motor manufacturer if you are not certain how to lock the rotor for commutation alignment.
3.
With the motor in a locked rotor position, pull pin# 2 (zero set) low, tie Pin 2 to Ground, to write the rotor position into non-volatile memory in the encoder.
4.
Power cycle the encoder, i.e., remove power from it. The commutation position is now permanently aligned with the motor rotor zero position and will use this offset at initialization every time at startup.
Note: The procedure is based on the standard “WYE” motor phase connection configuration. If your motor uses other than the “WYE” phase connection, you must acquire the AMT303 series demo board to program the required offset to align encoder commutation signal zero with motor zero position.
cui.com
CUI Inc │ SERIES: AMT303 │ DESCRIPTION: MODULAR ENCODER
date 03/29/2013 │ page 6 of 6
REVISION HISTORY
rev.
description
date
1.0
initial release
05/04/2011
1.01
updated electrical specifications
06/10/2011
1.02
updated pin-out and speed specification
09/21/2011
1.03
addition of commutation jitter, shock, speed, and position accuracy,
updated part number key
09/30/2011
1.04
updated Part Number Key
03/09/2012
1.05
clarification notes
08/17/2012
added locking connector drawing
03/29/2013
1.06
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
CUI offers a one (1) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
affect its safety or effectiveness.