Anaheim Encoder ENCA5SN SingleEnded Encoder without Index Spec Sheet

							FEATURES
ORDERING INFORMATION
910 East Orangefair Ln.  Anaheim, CA 92801     Tel. (714) 992-6990      Fax. (714) 992-0471     www.anaheimautomation.com
DESCRIPTION
The ENC-A5SN is a single-ended, transmissive optical encoder module desi\
gned to detect 
the rotary position with a code wheel.  The ENC-A5SN requires a minimum shaft length of 
.445” and can be attached to the end of any shaft size ranging from.0\
79” to.394” in diameter 
to provide digital feedback information.  This single-ended encoder consists of a LED source 
lens and a monolithic detector IC enclosed in a small mance and toleranc\
es over traditional 
aperture mask type encoders.  The ENC-A5SN series provides digital quadrature squarewave 
outputs on all resolutions and are capable of sinking or sourcing 8 mA each.  These encoders 
are powered from a single +5VDC power supply.
L010732
ENC-A5SN Single-Ended Encoder
without Index Channel
ENC - A5SN - 0050 - 394 - H  - G
Cover Options
E = Cover Extension
H = Hole in Cover
Blank = Default
Base Options
3 = Base Mounting Holes Become 0.125”
A = Adds Self-Aligning Shoulder to Base
G = Adds 1.812” Mounting Ears to Base
R = Adds 3-Slot Adapter to Bottom of Base
T  = Transfer Adhesive
Blank = Default
Bore Size
079 = 2mm236 = 6mm
118 = 3mm 250 = 1/4”
125 = 1/8” 276 = 7mm
156 = 5/32” 313 = 5/16”
157 = 4mm 315 = 8mm
188 = 3/16” 375 = 3/8”
197 = 5mm 394 = 10mm
CPR
003202500540
0050 02560720
0096 03600900
0100 04001000
0192 05001024
0200 05121250
• 32 to 1,250 Cycles Per Revolution (CPR)
• Tracks 0 to 300,000 Cycles Per Second
• 128 to 5,000 Pulses Per Revolution (PPR)
• Powered From a Single +5VDC Power Supply
• Accepts +/- 0.010” Axial Shaft Play
• 2-Channel Quadrature TTL Squarewave Outputs
• Operating Temperature of -40° to +100° C
• RoHS Compliant and REACH Certified 
						

							910 East Orangefair Ln.  Anaheim, CA 92801     Tel. (714) 992-6990     Fax. (714) 992-0471     www.anaheimautomation.com
Cover Options: Description
E - Option E-Option provides a cylindrical extension cover  for larger shafts.  
The required shaft length is .445” to .750”.  
Note: E-option + R-Option the required shaft length is .570” to 
.875”.
H - Option Shafts 2mm to 1/4”, a .295” diameter hole is supplied. 
Shafts 5/16” to 10mm, a .438” diameter hole is supplied.
Required shaft length > 0.445”
 
Note: H-Option + R-Option the required shaft length is > .570”
Default Option The required length is .445” to .570”
Note: Default Option + R-Option the required shaft length is 
.570” to .695”
COVER OPTIONS
DIMENSIONS
Note: Dimensions are in inches 
						

							910 East Orangefair Ln.  Anaheim, CA 92801     Tel. (714) 992-6990     Fax. (714) 992-0471     www.anaheimautomation.com
BASE OPTIONS
PIN/TIMING DIAGRAMS
SINGLE-ENDED ENCODER PINOUTTOP OF ENCODER FACING PLUG
Pin #Function
1 Ground
2 No Connection
3 Channel A
4 +5VDC Input
5 Channel B
(Note: Base Mounting Screws are NOT included. #2-56 or #4-40 screws can\
 be used to mount the base to your mounting surface.) 
						

							910 East Orangefair Ln.  Anaheim, CA 92801     Tel. (714) 992-6990     Fax. (714) 992-0471     www.anaheimautomation.com
ELECTRICAL SPECIFICATIONS
ACCESSORIES
Bore Size
079=2mm 236=6mm
118=3mm 250=1/4”
125=1/8” 276=7mm
157=4mm 313=5/15”
188=3/16” 375=3/8”
197=5mm 394=10mm
Centering Tools:
ENC-CTOOL - 250
Centering tools are optional, but recommended for a 
more precise installation. 
Cable Part Number Length
ENC-CBL-AA5939 1 ft.
ENC-CBL-AA5939-5 5 ft.
ENC-CBL-AA5939-10 10 ft.
Cables:
The following cables are compatible with Anaheim 
Automation’s A5SN series encoder. Select a cable 
length from the table below: 
NOTE: For pricing and other information on cables 
and centering tools, please visit Accessories on our 
website.
Parameter MinTy pMax Units
Supply Voltage 4.55.05.5Volts
Supply Current
CPR < 500, no load
CPR ≥ 500 and < 2000, no load
CPR ≥ 2000, no load -
-
-
27
50
72 33
62
85
mA
Output Low 
I
OL = 8mA max (CPR < 2000)
I
OL = 5mA max (CPR ≥ 2000)
no load (CPR ≥ 2000) -
-
-
-
-
0.25 0.5
0.5
- Volts
Output High*
I
OL = -8mA max (CPR < 2000)
I
OL = -5mA max (CPR ≥ 2000) 
no load (CPR < 2000)
no load (CPR ≥ 2000)     
2.0
2.0 -
- -
-
4.8
3.5        
-
-
-
- Volts
Output Current Per Channel 
(CPR < 2000) -8.0
-8.0 mA
Output Current Per Channel 
(CPR ≥ 2000) -5.0
-5.0 mA
Output Rise Time (CPR < 2000) -11 0 -nS
Output Rise Time
(CPR ≥ 2000), ± 5mA load -
50 -
Output Fall Time (CPR < 2000) -11 0 -
Output Fall Time
(CPR ≥ 2000), ± 5mA load -
50 -nS
Terminology Description
CPR(N): The Number of Cycles Per Revolution
One Shaft Rotation: 360 mechanical degrees, N cycles
One Electrical Degree (°e): 1/360th of one cycle
One Cycle (C): 360 electrical degrees (°e). Each cycle can 
be decoded into 1 or 4 codes, referred to as 
X1 or X4 resolution multiplication
Symmetry: A measure of the relationship between (X) 
and (Y) in electrical degrees, nominally 180 
°e
Quadrature (Z): The phase lag or lead between channels A 
and B in electrical degrees, nominally 90 °e
Index (CH I): The Index Output goes high once per 
revolution, coincident with the low states of 
channels A and B, nominally 1/4 of one cycle 
(90°e)
Parameter
MaxUnits
Vibration (5 to 2kHz) 20g
Shaft Axial  Play +/- 0.01in.
Shaft Eccentricity Plus Radial Play 0.004in.
Acceleration 250,000rad/sec
2
* Unloaded high level output voltage is 4.80V typically, 4.2V minimum.
Recommended Operating Conditions MinMax Units
Temperature (CPR < 2000) -40100 °C
Temperature (CPR ≥ 2000) -25100 °C
Load Capacitance -100 pF
Count Frequency
(CPR ≤ 1250) -
300 kHz
Count Frequency
(CPR 2000-2500) -
360 kHz
Count Frequency (CPR 4000+) -720 kHz
Speed Calculation Units
CPR ≤ 1250  18x10
6 / CPRRPM
CPR 2000-2500 21.6x10
6 / CPRRPM
CPR 4000+ 43.2x10
6 / CPRRPM
*60,000 RPM is the maximum RPM due to mechanical limitations.