DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
The incremental sensor module EBR7911EBx-xA-UA contains an Anisotropic
MagnetoResistive (AMR) FixPitch sensor with 2 mm magnetic pitch and a
Giant MagnetoResistive (GMR) sensor GF708 with SpinValve-Technology for
the reference signal.
When used with a magnetic scale with 2 mm pitch and a reference pole, the
module delivers two differential rectangle signals (A, B) and a differential reference pulse (Z).
The flank-to-flank resolution of the incremental signal is programmable, as well
as a lot of other parameters.
All EBR7911-types are protected against reverse polarity. The
EBR7911EBx-FA-UA is additionally equipped with a voltage regulator and a
line driver.
Features
Product Overview
Article
Description
EBR7911EBx-FA-UA (Type: 24 V)
EBR7911EBx-DA-UA (Type: 5 V)
Incremental sensor module with reference for 2
mm pitch with programmable resolution
Quick Reference Guide
1)
Symbol
Parameter
Min.
typ.
Max.
Unit
VCC
Supply voltage (Type: 24 V)
(Type: 5 V)
6.5
4.5
24.0
5.0
28.8
5.5
V
IC
Current consumption 1)
-
50
-
mA
F
Flanks per pitch (2 mm)
4
-
400
-
Tamb
Ambient temperature
-40
-
+100
°C
–
FixPitch sensor
–
SmartFit adjust function
–
Programmable resolution
–
A/B/Z differential output signal
–
Protection against reverse polarity
–
Extra protection against ESD
–
Ambient temperature range from
-40° C to +100° C
Advantages
–
Easy to mount
–
Large working distance
–
Small size
No load.
Applications
Stresses beyond those listed under “Absolute maximum ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Incremental encoder for rotating or linear
movements in various applications, for example:
– Motor feedback system
–
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 1 of 12
Robotics
Subject to technical changes
May 22nd 2015
Incremental FixPitch Sensor Module
Absolute Maximum Ratings Values
In accordance with the absolute maximum rating system (IEC60134).
Symbol
Parameter
Min.
Max.
Unit
VCC
Supply voltage (Type: 24 V)
Supply voltage (Type: 5 V)
-
40
6
V
Tamb
Ambient temperature
-25
+100
°C
Tstg
Storage temperature
-40
+100
°C
Electrical Data
Tamb = 25 °C; Hext = 20 kA/m; unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VCC
Supply voltage
Type: 24 V
Type: 5 V
6.0
4.5
24.0
5.0
28.8
5.5
V
Ic
Current consumption
No load
-
50
-
mA
F
Flanks per pitch
4
-
400
-
Hys
Hysteresis 1)
0.9
5.0
1.8
10.0
11.7
65.0
deg
µm
Tamb
Ambient temperature
-40
-
+100
°C
Iout,pin
Current per output (source and sink) 2)
Type: 24 V
Type: 5 V
-800
-150
100
+800
+150
mA
VoutH
Output high level
Isource=30 mA, VCC=24 V
Isource=50 mA, VCC= 5 V
23.6
4.3
-
24.0
5.0
V
VoutL
Output low level
Isink = 30 mA. VCC= 24 V
Isink = 50 mA. VCC= 5 V
0.0
0.0
-
0.4
0.7
V
f in
Input frequency 3)
Flanks per pitch ≤ 20
Flanks per pitch ≥ 384
-
-
200
10
kHz
0.2
-
1.6
µs
Minimal edge distance
1)
Digital programmable hysteresis related to the input signal period (1 increment is equivalent to 0.9° or 5 µm, see page 5 for more details).
2)
Programmable feature at EBR7911EBx-DA-UA (Type: 5 V).
3)
See page 4 for detailed information.
Mechanical Data
Symbol
Parameter
∆radial
Working distance (scale surface ↔ sensor)
EBR7911EBx-xA-UA.DSE.03
Conditions
Preliminary data sheet
Page 2 of 12
Min.
Typ.
Max.
Unit
-
600
1000
µm
Subject to technical changes
May 22nd 2015
Data s h ee t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
Accuracy of the Module
Tamb = 25 °C; ideal magnetic scale; unless otherwise specified.
Symbol
Parameter
Conditions
INL
Absolute accuracy 1)
R
Repeatability
Typ.
Max.
Unit
0.9
5
1.8
10
deg
µm
-
0.1
0.55
-
deg
µm
∆Π
Deviation of pulse width
-
< ±2
±10
%
∆φ
Deviation of phase shift
-
< ±2
±10
%
Typ.
Max.
Unit
tbd
tbd
deg
unidirectional
Min.
Relative to input signal of 360° or 2 mm pitch.
1)
Accuracy of the Kit
Tamb = 25 °C; for example with magnetic pole ring MWC-50-63; unless otherwise specified.
1)
Symbol
Parameter
Conditions
Min.
∆X
Absolute accuracy
R
Repeatability
unidirectional
-
tbd
-
deg
∆Π
Deviation of pulse width
See Fig. 3
-
tbd
tbd
%
∆φ
Deviation of phase shift
See Fig. 3
-
tbd
tbd
%
1)
Relative to input signal of 360° or 2 mm pitch.
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 3 of 12
Subject to technical changes
May 22nd 2015
Data s h ee t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
typical Performance Graphs
Fig. 2: Logical assignment for the reference signal (default setting,
inverted signals not shown).
Fig. 1: Typical output signals depend on direction of movement.
Fig. 3: Pulse width deviation and phase shift.
Fig. 4: Functional block diagram. Type: 24 V
EBR7911EBx-xA-UA.DSE.03
Fig. 5: Functional block diagram. Type: 5 V
Preliminary data sheet
Page 4 of 12
Subject to technical changes
May 22nd 2015
DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
Programmable Parameters of EBR7911EBx-xA-UA
hysteresis
Resolution
Flanks per pole
Interpolation
Factor (IPF)
Resulting maximal
Input frequency
f in
4
1
200 kHz
8
2
200 kHz
2 increments
12
3
200 kHz
...
16
4
200 kHz
13 increments
20
5
200 kHz
24
6
166 kHz
32
8
125 kHz
40
10
100 kHz
48
12
83 kHz
64
16
62.5 kHz
80
20
50 kHz
96
24
40 kHz
600 ns
100
25
40 kHz
800 ns
128
32
30 kHz
1 µs
192
48
20 kHz
1.2 µs
200
50
20 kHz
1.4 µs
384
96
10 kHz
1.6 µs
400
100
10 kHz
Logical Assignment for Z-Signal
Logical Assignment
1)
hysteresis
1 increment 1)
Low output
stability
↑
↓
Low accuracy
High output
stability
A higher hysteresis
makes the output
more stable but
decreases the
bidirectional
repeatability
Default configuration
Minimal Edge
Minimal edge
distance
Description
200 ns 1)
400 ns
1)
A higher edge distance (ED) may be useful for controls
with slower, limited inputs.
Restricting the minimal edge distance has an impact on
the maximal input frequency.
f in =
1
ED ⋅ IPF ⋅ 4
Default configuration.
Output Driver
(Only available for EBR7911EBx-DA-UA)
Output current
A low, B high
2 mA
A low, B high
8 mA
A low, B high
40 mA
A low, B high 1)
100 mA 1)
EBR7911EBx-xA-UA.DSE.03
High accuracy
Description
One increment is equivalent to 0.9° or 5 µm (at pole pitch of 2 mm).
1)
Description
Default configuration.
Effect output
stability
Effect
accuracy
1)
Description
In use with external line drivers
For RS422 application
Default configuration.
Preliminary data sheet
Page 5 of 12
Subject to technical changes
May 22nd 2015
DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
Pinning and Dimensions of the Module EBR7911EBx-xA-UA
Pinning
Pad
Symbol
Parameter
1
PZ
Output signal Z
2
NZ
Inverted output signal Z
3
NA
Inverted output signal A
4
PA
Output signal A
5
NB
Inverted output signal B
6
PB
Output signal B
7
GND
Ground
8
VCC
Supply voltage
Fig. 6: Connector.
Dimensions
Fig. 7: Board outline and dimensions of EBR7911EBx-xH-UA.
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 6 of 12
Subject to technical changes
May 22nd 2015
DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
Adjustment of the Sensor Module EBR7911EBx-xA-UA
Fig. 8: Adjustment of the sensor module EBR7911EBx-xA-UA with a typical pole ring MWRxxxxFAx.
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 7 of 12
Subject to technical changes
May 22nd 2015
DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
SmartFit
The SmartFit feature helps the user to verify the function of the sensor kit directly after mounting.
Switching on the power supply, the module examines the interpolation circuit and the amount of voltage.
Blinking green LED:
Everything is OK and an appropriate magnetic field for the module exists.
Glowing red LED:
a) low supply voltage or
b) not suitable because of a too small magnetic field.
In any case, please check the power supply and the correct adjustment to the scale.
Once the module or the scale is moved, SmartFit begins to analyze the sensor data.
Blinking green LED:
Not all required data are read yet.
Glowing green LED:
All necessary data are collected.
Blinking red LED:
The sensor data do not have the needed quality. In this case, please check the alignment of
the module in relation to the scale.
Glowing red LED:
Critical error. The module starts verifying the sensor data again, what is indicated by a solely
blinking green LED.
A permanently glowing green LED indicates, that the system works trouble-free.
Fig. 9: SmartFit - Status overview
EBR7911EBx-xA-UA.DSE.03.
Preliminary data sheet
Page 8 of 12
Subject to technical changes
May 22nd 2015
DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
Order Code
EBR7911EBF-DA-UA
Temperat ure and packaging
Supply voltage and variant
Sensor, output-interf ace and resolution
Module number
Type of system
Product Overview - Standard Products
Supply
voltage
5V
24 V
Flanks per
Pitch
Interpolation
factor
Article
4
1
EBR7911EBA-DA-UA
20
5
EBR7911EBD-DA-UA
64
16
EBR7911EBF-DA-UA
100
25
EBR7911EBH-DA-UA
400
100
EBR7911EBL-DA-UA
4
1
EBR7911EBA-FA-UA
20
5
EBR7911EBD-FA-UA
64
16
EBR7911EBF-FA-UA
100
25
EBR7911EBH-FA-UA
400
100
EBR7911EBL-FA-UA
Product Overview - Special Products
Article description
Article number
Special feature
Currently not available
-
-
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 9 of 12
Subject to technical changes
May 22nd 2015
Data s h ee t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
Additional Information on Ordering Code
Special Design Features
Sensors with PerfectWave design provide the best signal quality, highest accuracy and optimal sensor linearity by filtering out higher harmonics in the signal. The linearity of the sensor
is assured, even for weak magnetic field measurement.
In PurePitch sensors the FixPitch principle is extended over several poles in order to increase
accuracy still further. This arrangement reduces the influence of errors in the measurement
scale and improves the immunity to interference fields.
FixPitch sensors are adapted to the pole length (pitch) of the measurement scale. The linearity of the sensor is optimized and the influence of interference fields is minimized.
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 10 of 12
Subject to technical changes
May 22nd 2015
DAtA S h E E t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
General Information
Product Status
Phase
Status
EBR7911EBx-FA-UA
The product is under development, qualification is on going. Deliverables have a sample status.
The datasheet is preliminary.
EBR7911EBx-DA-UA
The product is under development, qualification is on going. Deliverables have a sample status.
The datasheet is preliminary.
Note
The status of the product may have changed since this data sheet was published. The latest information is
available on the internet at www.sensitec.com.
Disclaimer
Sensitec GmbH reserves the right to make changes, without notice, in the products, including software, described or contained
herein in order to improve design and/or performance. Information in this document is believed to be accurate and reliable. However,
Sensitec GmbH does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such information. Sensitec GmbH takes no responsibility for
the content in this document if provided by an information source outside of Sensitec products.
In no event shall Sensitec GmbH be liable for any indirect, incidental, punitive, special or consequential damages (including but not
limited to lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework
charges) irrespective the legal base the claims are based on, including but not limited to tort (including negligence), warranty, breach
of contract, equity or any other legal theory.
Notwithstanding any damages that customer might incur for any reason whatsoever, Sensitec product aggregate and cumulative
liability towards customer for the products described herein shall be limited in accordance with the General Terms and Conditions
of Sale of Sensitec GmbH. Nothing in this document may be interpreted or construed as an offer to sell products that is open for
acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual
property rights.
Unless otherwise agreed upon in an individual agreement Sensitec products sold are subject to the General Terms and Conditions
of Sales as published at www.sensitec.com.
Sensitec GmbH
Georg-Ohm-Str. 11 · 35633 Lahnau · Germany
Tel. +49 6441 9788-0 · Fax +49 6441 9788-17
www.sensitec.com · sensitec@sensitec.com
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 11 of 12
Subject to technical changes
May 22nd 2015
Data s h ee t
EBR7911EBx-xA-UA
Incremental FixPitch Sensor Module
General Information
Application Information
Applications that are described herein for any of these products are for illustrative purposes only. Sensitec GmbH makes no representation or warranty – whether expressed or implied – that such applications will be suitable for the specified use without further
testing or modification.
Customers are responsible for the design and operation of their applications and products using Sensitec products, and Sensitec
GmbH accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to
determine whether the Sensitec product is suitable and fit for the customer’s applications and products planned, as well as for the
planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating
safeguards to minimize the risks associated with their applications and products.
Sensitec GmbH does not accept any liability related to any default, damage, costs or problem which is based on any weakness
or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is
responsible for doing all necessary testing for the customer’s applications and products using Sensitec products in order to avoid a
default of the applications and the products or of the application or use by customer’s third party customer(s).
Sensitec does not accept any liability in this respect.
Life Critical Applications
These products are not qualified for use in life support appliances, aeronautical applications or devices or systems where malfunction of these products can reasonably be expected to result in personal injury.
Copyright © 2015 by Sensitec GmbH, Germany
All rights reserved. No part of this document may be copied or reproduced in any form or by any means without the prior written
agreement of the copyright owner. The information in this document is subject to change without notice. Please observe that typical
values cannot be guaranteed. Sensitec GmbH does not assume any liability for any consequence of its use.
Sensitec GmbH
Georg-Ohm-Str. 11 · 35633 Lahnau · Germany
Tel. +49 6441 9788-0 · Fax +49 6441 9788-17
www.sensitec.com · sensitec@sensitec.com
EBR7911EBx-xA-UA.DSE.03
Preliminary data sheet
Page 12 of 12
Subject to technical changes
May 22nd 2015
Data s h ee t
EBR7911EBx-xA-UA