E4P Product Description THE E4P HAS BEEN DISCONTINUED AND THE CURRENT MODEL IS THE E4T .
The E4P miniature reflective encoder is designed to provide digital quadrature encoder feedback for high-volume applications with limited space constraints. The E4P version utilizes an innovative, patented push-on encoder disk that accepts shaft diameters of 2mm to .250 in.
The E4P reflective encoder is the leader for high-quality OEM applications, but the E4 is the ideal choice when a set-screw encoder disk encoder is required (see the E4 page).
The E4P miniature encoder base provides mounting holes for two #3-48, length 1/4 in. or two M2.5x.45mm, length 6mm screws on a .586 in. bolt circle. When mounting holes are not available, a pre-applied transfer adhesive (with peel-off backing) is available for "stick-on" mounting.
The encoder cover is easily snapped onto the base and is embossed with the connector pin-out.
The E4P reflective series encoder can be connected using a (high retention 4-conductor snap-in polarized 1.25mm pitch) connector. Mating cables and connectors (see the Cables /Connectors web page) are not included and are available separately.
Product Specifications
ENVIRONMENTAL
PARAMETER
VALUE
UNITS
Vibration (5Hz to 2kHz)
20
G
Max. Relative Humidity
90
%
Storage Temperature
-40 to 100
C
Operating Temperature
-20 to 100
C
Electrostatic Discharge, IEC 61000-4-2S -option)D -option)
MECHANICAL
PARAMETER
VALUE
UNITS
Max. Shaft Axial Play
± .020
in.
Max. Off-axis Mounting Tolerance
± .010
in.
Max. Acceleration
250000
rad/sec²
Mounting Screw Size
Screw Bolt Circle Diameter
.586 ±.002
in.
Axial Length of Codewheel
.270
in.
Required Shaft Length (1)
.375 to .395
in.
Mounting Screw Torque
2-3
in-lbs
Technical Bulletin TB1001 - Shaft and Bore Tolerances
Download
(1) Includes axial play.
SINGLE-ENDED ELECTRICAL
SPECIFICATIONS
MIN.
TYP.
MAX.
UNITS
NOTES
Supply Voltage
4.5
5.0
5.5
V
Supply Current
21
27
mA
no load
Low-level Output
0.4
V
IOL = 6 mA
High-level Output
2.4
V
IOH = -1 mA
Rise Time
500
ns
CL = 25 pF, RL = 2.7 kΩ
Fall Time
100
ns
DIFFERENTIAL ELECTRICAL
SPECIFICATIONS
MIN.
TYP.
MAX.
UNITS
NOTES
Supply Voltage
4.5
5.0
5.5
V
Supply Current
23
29
mA
no load
Single-Ended Output Voltage High
4.75
5.0
V
Min. @ 25mA load, Typ. @ no load
Single-Ended Output Voltage Low
0.25
0.60
V
Typ. @ no load, Max. @ 4.5mA load
Differential Output Voltage
3.0
3.8
V
RL = 100 ohm
Differential Output Rise/Fall Time
1300
ns
PHASE RELATIONSHIP
PARAMETER
TYP.
MAX.
UNITS
Symmetry, S
180 ± 16
180 ± 75
electrical degrees
Quadrature Delay, Q
90 ± 10
90 ± 60
electrical degrees
(1) A leads B for clockwise shaft rotation, B leads A for counterclockwise shaft rotation viewed from the cover/label side of the encoder.
(2) Typical values represent the encoder performance at typical mounting alignment, whereas the maximum values represent the encoder performance across the range of recommended mounting tolerance.
PIN-OUT
4-PIN SINGLE-ENDED (1)
6-PIN DIFFERENTIAL (2)
Pin
Description
Pin
Description
1
+5VDC power
1
Ground
2
A channel
2
A channel
3
Ground
3
A- channel
4
B channel
4
+5VDC power
5
B channel
6
B- channel
(1) 4-pin single-ended mating connector is CON-MIC4 CON-MIC6
OPTIONS
H-OPTION (HOLE IN COVER)
The H -option adds a hole in the cover for the shaft to pass through:
For shaft diameters of 1.5mm to 1/8", a 0.170" hole is supplied.
For shaft diameters of 5/32" to 1/4", a 0.295" hole is supplied.
M-OPTION (METRIC MOUNTING SCREWS)
Provides alternate metric M2.5x.45mm, length 6mm screws. When M -option is NOT specified the default is #3-48 x 1/4" screws.
T-OPTION (TRANSFER ADHESIVE)
When mounting holes are not available, a pre-applied transfer adhesive (with peel-off backing) is available for "stick-on" mounting. Use the centering tool (above) to position the base. T -option specifies transfer adhesive.
Before installation, cleaning the mounting surface with alcohol is recommended to remove dust and oil.
ACCESSORIES
1. Centering Tool
The centering tool is only included with the -3 packaging option. It has to be ordered separately for other package options.
Part #: MCTOOL - (Shaft Diameter) Description: This reusable tool provides a simple method for accurately centering the E4P base onto the shaft. A centering tool is highly recommended when using the T -option transfer adhesive.
2. Spacer Tool
A spacer tool is included for all packaging options.
Part #: SPACER-E4P Description: This reusable tool is used to properly space the codewheel from the encoder.
PRODUCT CHANGE NOTIFICATIONS
Title
Date
Description
Download
E4, E4P, S4 - PCN 5741
05/09/2016
As part of our on-going product lifecycle management process, we have identified products that will be transitioned to an "End-of-Life" status. Products targeted for end-of-life may be available for a last time buy option prior to being made obsolete, however quantities are limited, and special requirements may apply.
Download
E4 - E4P - S4 Update - PCN 1014
11/29/2011
We have modified the E4, E4P and S4 product lines in order to improve the performance and durability of the encoder. Changes include new molds for the plastic base and cover parts with an over-molded bushing in the S4 base, a new SMT connector (compatible with current mating connector)and a modified PCB profile to accommodate the new connector and plastic part modifications.
Download
Additional Information
Product Notes
Cables and connectors are not included and must be ordered separately.
US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.
Related
Datasheet
Feedback
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