AMCI DC25 User manual

MICRO CONTROLS INC.
ADVANCED
U
s
e
r
M
a
n
u
a
l
Manual #: 940-0D043

ADVANCED MICRO CONTROLS INC.
GENERAL INFORMATION
Important User Information
The products and application data described in this manual are useful in a wide variety of different applica-
tions. Therefore, the user and others responsible for applying these products described herein are responsible
for determining the acceptability for each application. While efforts have been made to provide accurate infor-
mation within this manual, AMCI assumes no responsibility for the application or the completeness of the
information contained herein.
UNDER NO CIRCUMSTANCES WILL ADVANCED MICRO CONTROLS, INC. BE RESPONSIBLE OR
LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING INDIRECT OR CONSEQUENTIAL DAM-
AGES OR LOSSES, ARISING FROM THE USE OF ANY INFORMATION CONTAINED WITHIN THIS
MANUAL, OR THE USE OF ANY PRODUCTS OR SERVICES REFERENCED HEREIN.
No patent liability is assumed by AMCI, with respect to use of information, circuits, equipment, or software
described in this manual.
The information contained within this manual is subject to change without notice.
This manual is copyright 2018 by Advanced Micro Controls Inc. You may reproduce this manual, in whole or
in part, for your personal use, provided that this copyright notice is included. You may distribute copies of this
complete manual in electronic format provided that they are unaltered from the version posted by Advanced
Micro Controls Inc. on our official website: www.amci.com. You may incorporate portions of this documents
in other literature for your own personal use provided that you include the notice “Portions of this document
copyright 2018 by Advanced Micro Controls Inc.” You may not alter the contents of this document or charge a
fee for reproducing or distributing it.
Standard Warranty
ADVANCED MICRO CONTROLS, INC. warrants that all equipment manufactured by it will be free from
defects, under normal use, in materials and workmanship for a period of [18] months. Within this warranty
period, AMCI shall, at its option, repair or replace, free of charge, any equipment covered by this warranty
which is returned, shipping charges prepaid, within eighteen months from date of invoice, and which upon
examination proves to be defective in material or workmanship and not caused by accident, misuse, neglect,
alteration, improper installation or improper testing.
The provisions of the "STANDARD WARRANTY" are the sole obligations of AMCI and excludes all other
warranties expressed or implied. In no event shall AMCI be liable for incidental or consequential damages or
for delay in performance of this warranty.
Returns Policy
All equipment being returned to AMCI for repair or replacement, regardless of warranty status, must have a
Return Merchandise Authorization number issued by AMCI. Call [phone] with the model number and
serial number (if applicable) along with a description of the problem during regular business hours, Monday
through Friday, 8AM - 5PM Eastern. An "RMA" number will be issued. Equipment must be shipped to AMCI
with transportation charges prepaid. Title and risk of loss or damage remains with the customer until shipment
is received by AMCI.
24 Hour Technical Support Number
24 Hour technical support is available on this product. If you have internet access, start at www.amci.com.
Product documentation and FAQ’s are available on the site that answer most common questions.
If you require additional technical support, call [phone]. Your call will be answered by the factory dur-
ing regular business hours, Monday through Friday, 8AM - 5PM Eastern. During non-business hours an auto-
mated system will ask you to enter the telephone number you can be reached at. Please remember to include
your area code. The system will page an engineer on call. Please have your product model number and a
description of the problem ready before you call.
Waste Electrical and Electronic Equipment (WEEE)
At the end of life, this equipment should be collected separately from any unsorted municipal waste.

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com 3
TABLE OF CONTENTS
General Information
Important User Information ..................... 2
Standard Warranty ................................... 2
Returns Policy .......................................... 2
24 Hour Technical Support Number ........ 2
WEEE Statement ..................................... 2
About This Manual
Audience .................................................. 5
Navigating this Manual ............................ 5
Manual Conventions ................................ 5
Trademarks and Other Legal Stuff .......... 5
Revision Record ....................................... 5
Where to Go From Here .......................... 6
Reference 1: The Absolute Digital 
DuraCoder
Absolute Digital DuraCoder Overview ... 7
Absolute Digital DuraCoder 
Diagnostics .................................. 7
Part Numbering System ........................... 8
Description of Outputs ............................. 8
Output Codecs ............................... 8
Output Update Control .................. 8
Output Electrical Configurations ... 9
Status LED ............................................... 9
Normal Operation 
(Test Pin open) ............................ 9
Test Mode 
(Test Pin grounded) ..................... 9
Electrical Specifications .......................... 10
Environmental Specifications .................. 10
Mechanical Specifications ....................... 10
Task 1: Installation
Flange Mount Outline Drawings .............. 11
End Connector .............................. 11
Side Connector .............................. 11
Alternate Shafts ............................. 12
Shaft Loading ................................ 12
Servo Mount Outline Drawings ............... 13
End Connector .............................. 13
Side Connector .............................. 13
Alternate Shafts ............................. 14
Shaft Loading ................................ 14
Blind Shaft Mount Outline Drawings ...... 15
End Connector .............................. 15
Side Connector .............................. 16
Available Shaft Diameters ............ 16
Shaft Loading ................................ 16
5/8" Shaft Outline Drawings .................... 17
End Connector .............................. 17
Side Connector .............................. 18
Shaft Loading ................................ 19
Connector Pinout ...................................... 19
Task 2: Diagnostics
Output States ............................................ 21
Over Voltage and 
Under Voltage Detection ....................... 21
Error Output ............................................. 22
Test Input ................................................. 22
Normal Operation 
(Test Pin Open) ........................... 22
Test Mode 
(Test Pin Tied to GND) .............. 23
Testing Sourcing Output DuraCoders ...... 23
High True Output Units ................ 23
Low True Output Units ................. 23
Testing Sinking Output DuraCoders ........ 24
High True Output Units ................ 24
Low True Output Units ................. 24

TABLE OF CONTENTS Absolute Digital DuraCoder User’s Manual
ADVANCED MICRO CONTROLS INC.
4
Notes

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com 5
ABOUT THIS MANUAL
Audience
This manual explains the installation and operation of AMCI’s absolute digital output DuraCoders. It is writ-
ten for the engineer responsible for incorporating the Absolute Digital DuraCoder into a design as well as the
engineer or technician responsible for its actual installation. If there are any unanswered questions after read-
ing this manual, call the factory. An applications engineer will be available to assist you.
Navigating this Manual
This manual is designed to be used in both printed and on-line forms. Its on-line form is a PDF document,
which requires Adobe Acrobat Reader version 7.0+ to open it. You are allowed add notes and annotations as
well as select and copy sections for use in other documents. If you decide to print out this manual, all sections
contain an even number of pages which allows you to easily print out a single chapter on a duplex (two-sided)
printer.
Manual Conventions
Three icons are used to highlight important information in the manual:
NOTES highlight important concepts, decisions you must make, or the implications of those
decisions.
CAUTIONS tell you when equipment may be damaged if the procedure is not followed
properly.
WARNINGS tell you when people may be hurt or equipment may be damaged if the pro-
cedure is not followed properly.
The following table shows the text formatting conventions:
Trademarks and Other Legal Stuff
The AMCI logo is a trademark, and “DuraCoder” is a registered trademark of Advanced Micro Controls Inc.
“Adobe” and “acrobat” are registered trademarks of Adobe Systems Incorporated.
All other trademarks contained herein are the property of their respective holders.
Revision Record
This manual, 940-0D043 is the fourth release of the manual. It adds information on the new diagnostic capa-
bilities and the alterations to the connector pinout. It was first released October 31th, 2018.
Read this chapter to learn how to navigate through this manual and familiarize
yourself with the conventions used in it. The last section of this chapter highlights
the manual’s remaining chapters and their target audience.
Format Description
Normal Font Font used throughout this manual.
Emphasis Font Font used the first time a new term is introduced.
Cross Reference When viewing the PDF version of the manual, clicking on the
cross reference text jumps you to referenced section.
HTML Reference When viewing the PDF version of the manual, clicking on the
HTML reference text will open your default web browser to
the referenced web page.

ABOUT THIS MANUAL
ADVANCED MICRO CONTROLS INC.
6
Where to Go From Here
The table below gives a brief description of the content of each chapter to help you find the information you
need to assist you in your job.
CHP
NUM. Chapter Title Chapter Description
Reference
1The Absolute Digital
DuraCoder
Intended for anyone new to the Absolute Digital DuraCoder,
this chapter gives a basic overview of the unit. The chapter
also explains the Absolute Digital DuraCoder part numbering
system.
Task 1 Installation This chapter is intended for the engineer or technician respon-
sible for installing and wiring the Absolute Digital Dura-
Coder. Information in this chapter includes mechanical
drawings, installation guidelines and connector pinout.
Task 2 Diagnostics This chapter explains the diagnostics available on the latest
revision of the absolute digital DuraCoders. A status LED has
been added on the rear cover of the revised DuraCoders.

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com 7
REFERENCE 1
THE ABSOLUTE DIGITAL DURACODER
Absolute Digital DuraCoder Overview
DuraCoders are designed as direct replacements for optical
encoders. Instead of being designed around a disk and optics, a
DuraCoder uses a resolver as its primary shaft position sensor.
Constructed in a manner similar to high precision motors,
resolvers are absolute, single turn position sensors that are
unsurpassed in terms of ruggedness and reliability. The resolver
is an analog device whose outputs vary sinusodially as the shaft
is rotated. If you are interested in learning more about resolvers,
read the article on our website at: https://www.amci.com/indus-
trial-automation-resources/plc-automation-tutorials/what-
resolver/.
The resolver’s analog signals are decoded into a 12 bit position
value by electronics incorporated into the DuraCoder. This 12
bit (4096 count), absolute position value is available as a paral-
lel digital output. Several different output codes and voltage
level outputs are available.
In addition to the actual position outputs, the Absolute Digital
DuraCoders also offer two inputs that control the outputs. The
Latch Input is used to control when the position values update
and the Direction Input controls the direction of rotation needed to produce increasing counts.
The Absolute Digital DuraCoder is available in a variety of industry standard size 25 optical encoder pack-
ages. A flange mount unit with a 3/8" shaft and a side connector is shown in figure R1.1. Servo mount and
end connect units are also available. If your application requires you to mount the DuraCoder to a motor, a
blind shaft mounting option is available as well. Finally, a face mount unit with a 5/8 inch shaft is available
for applications that may be exposed to high shaft loads.
Outline drawings of all of the packing options is available in the Outline Drawings section of the Installation
chapter, starting on page 11.
Absolute Digital DuraCoder Diagnostics
Starting in August of 2018, Absolute Digital DuraCoders include additional diagnostic features.
Fault Output - This output is active during normal operation and goes inactive when one or more of the
following conditions exists:
1) Over temperature of the output drivers
2) Output shorted to ground
3) Output shorted to Vdc
4) Open connection or wire.
Test Input - Used to test the outputs of the unit. This single input can be used to force all of the outputs
into their active or inactive states. A full explanation of the uses of this pin can be found in Task 2,
Diagnostics starting on page 21.
Status LED - Located on the back of the unit, this LED shows the status of the unit under normal oper-
ating conditions, and the status of the outputs when used with the Test Pin.
Figure R1.1 An Absolute Digital DuraCoder

THE ABSOLUTE DIGITAL DURACODER
ADVANCED MICRO CONTROLS INC.
8
Part Numbering System
Figure R1.2 Part Numbering System
Description of Outputs
Output Codecs
The Absolute Digital DuraCoder can output its data in 12 bit Natural Binary, 12 bit Gray Code, or 12 bit BCD
formats. In Natural Binary and Gray Code formats, the maximum output value is 4,095. For BCD format, the
maximum output value is 999.
In new installations, the sole advantage of Gray Code over Natural Binary is that only one bit
changes per count. This allows you to easily check the validity of the position data. This one
bit change holds true only if your number of counts per turn is a power of two. (2, 4, 8, ...
4,096) If your number of counts per turn is not set to a power of two, the transition between
your maximum count and zero will result in two or more bits changing in the data.
Output Update Control
Position data updates are controlled by a single pin named Latch Control and the type of control is set when
the DuraCoder is ordered. Two types of position update control are available.
Level Sensitive (Part # starts: DC25?-??A) – The
position data updates every 325 microseconds
while the Latch Control pin is at a Logic 1 voltage
or the pin is left open. The position data will freeze
within 25 microseconds of this pin being driven to
a Logic 0 voltage. The position data will begin to
update within 325 microseconds once it is released
from the Logic 0 voltage level. If the Latch Control
pin is at a Logic 0 on power up, all outputs will be
in their zero state until the first positive transition.
Position data will not be valid until this transition.
DC25
HOUSING
F = Square Flange
S = 2.5" Dia. Servo Mount
H = 63mm Blind Shaft Mount
–
BEARING SEAL
B = Nitrile (standard)
V = Viton
SHAFT DIA.
Standard Shaft
Blind Shaft Hole
1 = 0.375" Dia.
2 = 10mm Dia.
3 = 0.250" Dia.
5 = 0.625" Dia.
1 = 0.375" Dia
2 = 10mm Dia.
4 = 0.500" Dia
6 = 12mm Dia.
Flange Mount Only
Housing = 'F'
OUTPUT CONFIG.
High True Outputs
A= Current Source, 24Vdc max.
B
= Current Sink, 24Vdc max.
C = Current Sink with 10 K pullup
to DuraCoder Input Voltage.
F = Current Source, 24Vdc max.
G = Current Sink, 24Vdc max.
H = Current Sink with 10 K pullup
to DuraCoder Input Voltage.


Low True Outputs
CONNECTOR
S = Side
E = End
DURACODER TYPE
A =Absolute Parallel, Level Update
B =Absolute Parallel, Edge Update
OUTPUT CODING
1 = 1,024 Count, Gray Code
2 = 1,024 Count, Binary
3 = 4,096 Count, Gray Code
4 = 4,096 Count, Binary
5 = 360 Count, BCD
6 = 1,000 Count, BCD
B0002 to B4096
Factory Set, Binary
D0002 to D1000
Factory Set, BCD
G0002 toG4096
Factory Set, Gray Code
Figure R1.3 Level Sensitive Update
DATA
BITS
LATCH
CONTROL
325 µS
25 µS

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
THE ABSOLUTE DIGITAL DURACODER
9
Description of Outputs (continued)
Output Update Control (continued)
Edge Sensitive (Part # starts: DC25?-??B) – A
Logic 0  1 or 1  0 transition on the Latch Control
input will update the outputs within 325 microsec-
onds. The output will then freeze until another valid
transition. Transitions must be a minimum of 325
microseconds apart. (1.5 kHz at a 50% duty cycle
maximum.) On power up, all of the outputs will be in
their zero state until the first valid transition occurs.
Position data will not be valid until this transition.
Output Electrical Configurations
Three different electrical configurations are available for the outputs.
Open Collector Sourcing
Open Collector Sinking
Open Collector Sinking with a 10Kresistor to +Vin
Full characteristics for the output are available in the Electrical Specifications section on the following page.
Outputs can be ordered as a High True Output or a Low True Output. The table below shows the states.
Figure R0.1 Output States
Status LED
As shown in figure R1.5, the Status LED is located on the back of the unit.
Normal Operation (Test Pin open)
Steady Green - The encoder is operating normally without a fault.
Steady Red - One or more of the following fault conditions exists:
1) Over temperature of the output drivers
2) Output shorted to ground
3) Output shorted to Vdc
4) Open connection or wire.
Test Mode (Test Pin grounded)
OFF - The output are acting normally.
ON - A fault condition exists on one or more of the outputs. See Task
2, Diagnostics starting on page 21 for information on diagnosing the
error condition.
High True Low True
Logic 1 Logic 0 Logic 1 Logic 0
Open Collector Source Output Conducts to VIN High-Impedance High-Impedance Conducts to VIN
Open Collector Sink Output High-Impedance Conducts to GND Conducts to GND High-Impedance
Sink Output w/ 10 KPullup High-Impedance
Pulled to VIN
through 10 KConducts to GND Conducts to GND High-Impedance
Pulled to VIN
through 10 K
Figure R1.4 Edge Sensitive Update
DATA
BITS
LATCH
CONTROL
325 µS 325 µS
Status LED
Figure R1.5 Status LED Location

THE ABSOLUTE DIGITAL DURACODER
ADVANCED MICRO CONTROLS INC.
10
Electrical Specifications
Operating Voltage
10.8 Vdc to 26.4Vdc (12 to 24 Vdc nominal)
Power Requirements
1.2 W max. (50mA @ 24Vdc) 
All outputs in their inactive state.
Position Resolution
2 to 4,096 counts with Gray Code or Natural Binary out-
put format.
2 to 1,000 counts with BCD output format
Position Update Control
Latch Control pin on connector that is factory set to
either Level control or Edge control.
With Level control, the outputs update continuously
while pin is at a logic 1 or open circuit. Outputs
freeze when input tied to DC Return.
With Edge control, outputs update within 325 microsec-
onds of a transition from logic 0 to logic 1 or logic 1
to logic 0. Transitions must occur at a minimum of
325 microseconds apart. (1.5KHz at 50% duty cycle)
Logic Level Input Voltages
Logic 0: 0 Vdc to 0.8 Vdc.
Logic 1: 2 Vdc to Operating Voltage.
Inputs have pull up resistors, so 
leaving them disconnected will act 
as a logic “1”
Position Update Time
325 microseconds when using Level update control and
the Latch Control pin has been at a logic 1 or open
circuit for a minimum of 325 microseconds
Max. Output Settling Time
325 microseconds. Occurs on either transition when
using Edge control or when Latch Control pin
changes from Logic 0 to Logic 1 state when using
Level control.
Direction of Increasing Counts
Default CCW looking at shaft
Can be set to CW increasing by shorting pin R to DC
Return.
Output Types
Open Collector Sourcing, Open Collector Sinking, and
Sinking with 10 Kpull-up resistor.
On State Current
500 mA per output without damage.
On State Resistance
0.75 max. (0.03 Vdc drop across driver at 40 mA)
Leakage Current
5 microamps maximum
Environmental Specifications
Operating Temperature
-40°F to +185°F (-40°C to +85°C)
Shock
50g, 11 millisecond duration
Vibration
20g, 5 to 2000Hz
Enclosure Rating
IP67
Approximate Weight
2.0 lbs. (0.91 Kg) 0.625" shafts
1.4 lbs. (0.65 Kg) All other shafts
Mechanical Specifications
Package Style
2.5 inch aluminum housing with flange, servo, or blind
shaft mounting
Connector Location
Side or End
Housing
Powder coated aluminum
Shaft
0.250", 0.375", 0.625", or 10mm
Blind Shaft with 0.375", 0.500", 10mm or 12 mm hole
Max. Starting Torque @ 25°C
2.0 oz-in: 0.250", 0.375", and 10mm shafts
6.0 oz-in: All blind shafts
6.0 oz-in: 0.625" shaft
Moment of Inertia (oz-in-sec2)
6.00 X 10-4: 0.250", 0.375", and 10mm shafts
7.00 X 10-4: All blind shafts
8.50 X 10-4: 0.625" shaft
Max. Operating Speed
6000 RPM
Max. Shaft Loading (0.625" shaft)
Axial: 50 lbs. (222 N)
Radial: 100 lbs. (445 N)
As specified max. loads, bearing life is 2X109revolu-
tions min.
Max. Shaft Loading (All other shafts)
Axial: 20 lbs. (89 N)
Radial: 40 lbs. (178 N)
As specified max. loads, bearing life is 2X109
revolutions minimum.

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com 11
TASK 1
INSTALLATION
Flange Mount Outline Drawings
End Connector
Figure T1.1 Flange Mount, End Connect Outline Drawing
Side Connector
Figure T1.2 Flange Mount, Side Connect Outline Drawing
DC25
Absolute Digital
Output
Flange Mount
End Connector
(67.3)
(67.3)
(6.35)
(26.21)
(26.21)
( ) = Dimensions in millimeters
(31.75)
L
L
MS3112E-14-19P
Connector
DC25
Absolute Digital
Output
Flange Mount
Side Connector
(26.21)
(67.3)
(26.21)
max.
(35.6)
(6.35)
2.50"
dia.
(63.5)
( ) = Dimensions in millimeters
(22.86)
(31.75)
L
L
MS3112E-14-19P
Connector

INSTALLATION
ADVANCED MICRO CONTROLS INC.
12
Flange Mount Outline Drawings (continued)
Alternate Shafts
Shaft Loading
Limit shaft loading to the following values. These values statistically yield an L10 life of 2X109revolutions.
(L10 life is a rating which means that statistically, only 10% of the bearings will have failed after 2X109rev-
olutions.) Shaft loading has an exponential effect on bearing life. The bearings will statistically last longer if
you can limit shaft loading below the given values. Consider using the 5/8" shaft DuraCoder from AMCI if
your shaft loading is expected to be greater than the values given below. Outline drawings for the 5/8" shaft
DuraCoders start on page 17.
Table T1.1 Flange Mount Shaft Loading
Radial Load Axial Load
40 lbs. (178 N) 20 lbs. (88 N)
Figure T1.3 Flange Mount Alternate Shafts
0.2497"
0.2492" (6.330)
(6.342)
1/4" Shaft
(Shaft Option 3)
10mm Shaft
(Shaft Option 2)
0.900"
0.850" (21.59)
0.3934"
0.3931" (9.985)
(9.993)
(22.86) 0.900"
0.850" (21.59)
(22.86)
() = Dimensions in mm

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
INSTALLATION
13
Servo Mount Outline Drawings
End Connector
Figure T1.4 Servo Mount, End Connect Outline Drawing
Side Connector
Figure T1.5 Servo Mount, Side Connect Outline Drawing
DC25
Absolute Digital
Output
Servo Mount
End Connector
#8-32 UNC- 2B. 0.18" min depth. Six
places, 60° apart on a 1.875" B.C.
(4.6) (47.63)
(58.64)
( ) = Dimensions in millimeters
(22.86)
(31.75)
MS3112E-14-19P
Connector
(35.6)
2.50"
dia.
(63.5)
MS3112E-14-19P
Connector
DC25
Absolute Digital
Output
Servo Mount
Side Connector
(7.62)
(58.6)
#8-32 UNC-2B.
0.18" min. depth.
Six places, 60° apart
on 1.875" B.C.
(4.6)
(47.62)
( ) = Dimensions in millimeters
(22.86)
(7.62)
(31.75)

INSTALLATION
ADVANCED MICRO CONTROLS INC.
14
Servo Mount Outline Drawings (continued)
Alternate Shafts
Shaft Loading
Limit shaft loading to the following values. These values statistically yield an L10 life of 2X109revolutions.
(L10 life is a rating which means that statistically, only 10% of the bearings will have failed after 2X109rev-
olutions.) Shaft loading has an exponential effect on bearing life. The bearings will statistically last longer if
you can limit shaft loading below the given values. Consider using the 5/8" shaft DuraCoder from AMCI if
your shaft loading is expected to be greater than the values given below. Outline drawings for the 5/8" shaft
DuraCoders start on page 17.
Table T1.2 Servo Mount Shaft Loading
Radial Load Axial Load
40 lbs. (178 N) 20 lbs. (88 N)
Figure T1.6 Servo Mount Alternate Shafts
0.2497"
0.2492" (6.330)
(6.342)
1/4" Shaft
(Shaft Option 3)
10mm Shaft
(Shaft Option 2)
0.900"
0.850" (21.59)
0.3934"
0.3931" (9.985)
(9.993)
(22.86) 0.900"
0.850" (21.59)
(22.86)
() = Dimensions in mm

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
INSTALLATION
15
Blind Shaft Mount Outline Drawings
End Connector
Figure T1.7 Blind Shaft Mount, End Connect Outline Drawing
(28.58)
2.72"(69.0)
0.067" radius
on2.48" B.C.
(1.70)
(63.0)
(17.0) (20.0)
SEE
CHART
Customer
Side
0.75"
(19.0)
2.48" B.C.
(63.0)
0.65" Clearance
(16.5)
1.10" depth (27.9)
2.50" Dia.
(63.5)
VIEW A
0.14"
(3.6)
4-40 Thru Tap
3 places,
120° apart
ShaftLength
0.59" min.
1.10" max.
(15)
(27.9)
SEE
CHART
VIEW A
4.09"
(
103.9
)
DC25
Absolute Digital
Output
Blind Shaft Mount
End Connector
0.55" max.
Total clearance of 4.5" needed
for removal of matin
g
connector.
(14.0)
(114)
Shaft Seal
English Metric
Nominal Hole
Diameters Available
( ) = Dimensions in millimeters
MS3112E-14-19P
Connector

INSTALLATION
ADVANCED MICRO CONTROLS INC.
16
Blind Shaft Mount Outline Drawings (continued)
Side Connector
Figure T1.8 Blind Shaft Mount, Side Connect Outline Drawing
Available Shaft Diameters
The diameter of the drive shaft must be specified when ordering a blind shaft DuraCoder. Available options
are given in the table below. Other diameter options may have become available after the release of this man-
ual. Please check our website, www.amci.com, if you do not see the shaft diameter that fits your application.
Table T1.3 Available Blind Shaft Diameters
Shaft Loading
The load that the Analog DuraCoder presents to your input shaft, which is equal to the load presented to the
DuraCoder by your input shaft, is difficult to calculate and is dependent on the accuracy of the mounting. The
flexible metal mounting bracket will be able to absorb most of the radial loading forces, but accurate mount-
ing of the DuraCoder is still important.
Nominal Hole Diameters
English Metric
0.375" 10 mm
0.500" 12 mm
(28.58)
2.72" (69.0)
0.067" radius
on 2.48" B.C.
(1.70)
(63.0)
(17.0) (20.0)
SEE
CHART
Customer
Side
0.75"
(19.0)
2.48" B.C.
(63.0)
0.65" Clearance
(16.5)
1.10" depth (27.9)
2.50" Dia. (63.5)
VIEW A
0.14"
(3.6)
4-40 Thru Tap
3 places,
120° apart
Shaft Length
0.59" min.
1.10" max.
(15)
(27.9)
SEE
CHART
VIEW A
4.09"(103.9)
DC25
Absolute Digital
Output
Blind Shaft Mount
End Connector
Shaft Seal
English Metric
Nominal Hole
Diameters Available
( ) = Dimensions in millimeters
1.40" sq.
(35.6)
MS3112E-14-19P
Connector
max.
1.05" max.
Total clearance of 5.1"
needed for removal of
mating connector.
(26.7) (130)
2.30" (58.4)

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
INSTALLATION
17
5/8" Shaft Outline Drawings
End Connector
Figure T1.9 5/8" Shaft, Face Mount, End Connect Outline Drawing
KEYWAY SPECIFICATIONS
INCLUDED KEY
KEYWAY
0.1895"
0.1885"
(4.788)
X
0.108"
0.106"
(2.69)
NOTES:
1
)
Inte
g
ral Shaft Seal.
2
)
1/4-20 UNC-2B 0.50"
(
12.7
)
minimum
depth. Six Places.
3
)
Total clearance of 4.5"
(
114
)
needed
for removal of mating connector.
Deep
See Keyway
Specifications
0.750"
(19.05)
1.500"
(38.10)
0.470"
(11.95)
See Note 1
1.032"
(26.21)
0.94"
(23.9)
L
(36.8)
0.125"
(3.18)
1.500"
1.499"
(38.07)
(38.10)
diameter
L
See Note 2
0.6247"
0.6237"
(15.842)
(15.867)
0.188"
0.187"
(4.75)
Sq.
X
1.00" (25.4)
0.55" max.
See Note 3
(14.0)
DC25
Absolute Digital
Output
5/8" Shaft
Flange Mount
End Connector
MS3112E-14-19P Connector
( ) = Dimensions in millimeters
2.50"
(63.5)
dia.
typ.
typ.
1.00"
(25.4)
1.032"
(26.21)

INSTALLATION
ADVANCED MICRO CONTROLS INC.
18
5/8" Shaft Outline Drawings (continued)
Side Connector
Figure T1.10 Flange Mount, Side Connect Outline Drawing
max.
1.37" max.
See Note 3
(34.8)
NOTES:
1) Integral Shaft Seal.
2) 1/4-20 UNC-2B 0.50" minimum
depth. Six Places.
3) Total clearance of 5.0" needed
for removal of mating connector.
(12.7)
(127)
See Keyway
Specifications
0.750"
(19.05)
1.500"
(38.10)
0.470"
(11.95)
See Note 1
1.032"
(26.21)
0.94"
(23.9)
L
(36.8)
0.125"
(3.18)
1.500"
1.499"
(38.07)
(38.10)
diameter
L
0.6247"
0.6237"
(15.842)
(15.867)
( ) = Dimensions in millimeters
DC25
Absolute Digital
Output
5/8" Shaft
Flange Mount
Side Connector
MS3112E-14-19P
Connector
typ.
1.032" typ. (26.21)
See Note 2
1.40" sq.
(35.6)
KEYWAY SPECIFICATIONS
INCLUDED KEY
KEYWAY
0.1895"
0.1885"
(4.788)
X
0.108"
0.106"
(2.69)
Deep
0.188"
0.187"
(4.75)
Sq.
X
1.00" (25.4)
2.50"
(63.5)
dia.
1.00"
(25.4)

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
INSTALLATION
19
5/8" Shaft Outline Drawings (continued)
Shaft Loading
Limit shaft loading to the following values. These values statistically yield an L10 life of 2X109revolutions.
(L10 life is a rating which means that statistically, only 10% of the bearings will have failed after 2X109rev-
olutions.) Shaft loading has an exponential effect on bearing life. The bearings will statistically last longer if
you can limit shaft loading below the given values.
Table T1.4 Flange Mount Shaft Loading
Connector Pinout
Figure T1.11 shows the pin designations on the MS3112E-14-19P connector.
AMCI sells a straight mating connector under the AMCI part number: MS-19.
AMCI does not supply factory made cables for the Absolute Digital Dura-
Coder because of the many possible configurations.
Pins A-M: Position Output – These pins output the absolute position value.
Pin A is the least significant bit.
Prior to the August 2018 release of the Absolute Digital Dura-
Coder, the “N” and “P” pins were “No Connection” pins.
Pin N: Error Output – The output state of this pin is active dur-
ing normal operation. It switches to its inactive state when there
is a fault condition. The four detectable fault conditions are:
Output driver over-temperature
Output shorted to ground
Output shorted to Vdc
Open wire or connections
These faults are latched. Once they occur, the DuraCoder will
report the error until it is cleared. There are two methods to clear
the error.
1)Cycle power to the DuraCoder
2)Pull the Test input low for a minimum of 10 milliseconds
and release it.
If the fault condition no longer exists, the Error output will
return to its active and the Status LED on the back of the unit
will change from red to green.
See table T2.2, Output Voltage States, found on page 21 for the
output voltage levels when the output is active or inactive.
Pin P: Test Input – This pin is used to test the outputs of the
DuraCoder and clear fault conditions. This pin should be left
open for normal operation. Connecting this pin to GND will
place the DuraCoder in test mode. The use of this pin is fully
described in Task 2, Diagnostics, starting on page 21.
Radial Load Axial Load
100 lbs. (445 N) 50 lbs. (222 N)
V R DU
P
B
T
H
N
S
F
K
M
G
L
EJ
C
A
Figure T1.11 Connector Pinout
PIN
Function
Gray
Code Natural Binary BCD (8421)
AG(0) 2
01
BG(1) 212
CG(2) 2
24
DG(3) 238
EG(4) 2
410
FG(5) 2520
GG(6) 2
640
HG(7) 2780
JG(8) 2
8100
KG(9) 29200
L G(10) 210 400
MG(11) 211 800
N Error Output
PTest Input
R Direction Control Input
SCase GND
T DC Return
ULatch Control Input
V +DC Input

INSTALLATION
ADVANCED MICRO CONTROLS INC.
20
Connector Pinout
Pin R: Direction Control – This pin controls which direction the shaft must rotate to increment the position
data. With this pin open circuit, position data increases with CCW rotation, looking at the shaft. Connecting
this pin to Pin T, (DC Return), forces the position to increase with CW rotation, looking at the shaft.
If you want CW increasing counts, you must connect pins R and T at the connector or at the
end of a short extension cable. Do not run a long cable pair from these pins and connect these
pins at the other end of the cable. This may allow noise to be injected into the Direction Con-
trol pin that will affect the position count.
Pin S: Case GND – This pin should be used to tie the body of the DuraCoder to chassis ground at the 
DuraCoder if the unit is not grounded through its mounting. This pin is not to be used as the power supply
return. The power supply must be wired to pins T (DC Return) and V (+DC Input).
Pin T: DC Return – This pin must be connected the power supply return. The power supply must be wired to
pins T (DC Return) and V (+DC Input). This pin cannot be used to tie the body of the DuraCoder to chassis
ground.
Pin U: Latch Control – The Latch Control input is fully described in the section Output Update Control,
found on page 8. Briefly here, there are two types of position data update control:
 Level Sensitive: The outputs update every 325 microseconds when the pin is open circuit or at a logic 1
voltage level. The outputs will freeze within 25 microseconds when a logic 0 voltage is applied. When the
input transitions between a logic 0 and a logic 1, the outputs will take approximately 325 microseconds
before they begin to update.
 Edge Sensitive: The outputs update within 325 microseconds of a 0  1 or 1  0 transition on the input.
The outputs then freeze until another valid transition. Transitions must be at least 325 microseconds apart,
which yields a maximum frequency of 1.5KHz with a 50% duty cycle. All of the outputs will be at a logic
0 state on power up until the first valid transition occurs.
Pin V: +DC Input – This pin must be connected to the high side of the power supply. The power supply must
be wired to pins T (DC Return) and V (+DC Input).