Jaquet Green line E12A User manual

OPERATING INSTRUCTIONS
E12A REV. 0
www.jaquet.com
[e-mail]
Tel.: [phone]
Page 1/3
Variable Reluctance Speed Sensor
E12A
Product ID
Type #
Product #
Drawing #
E12A
385Z-05320
113.586 Rev.1
General
Function The E12A series variable reluctance (VR) speed sensors consist of an iron core,
an inductive coil, and a permanent magnet. A ferrous pole wheel passing the
sensor face changes the magnetic field strength, resulting in an AC voltage
being induced in the coil. The frequency of the output signal is proportional to the
speed of the moving target. The amplitude of the signal depends on speed, air
gap, geometry of target, magnetic properties of target material, and the electrical
load. VR sensors, also known as passive or electromagneticsensors, do not
require an external supply.
Technical data
Coil properties Inductance @ 1 kHz: 170 mH ± 10%
Resistance: 850 Ohm ± 10%
Magnet polarity: north pole towards front face
Pole piece: diameter 2.7 mm
Polarity Upon approach of ferrous metal, the signal pin is positive with respect to GND.
Signal output The signal frequency is proportional to the target speed.
The signal amplitude shown in the figure is valid for a load of 100 kOhm, and is
affected by air gap, target geometry and material. It is also proportional to the
linear speed of the teeth.
Frequency range Up to 20 kHz, lower limit depending on application
Housing M12x1, tightening torque: max. 12 Nm
Connection Connector: M12x1 thread, 4 pins, black
Protection Sensor head: IP68
Connector: IP67
Insulation Housing and electronics galvanically isolated (Test: 500 V, 50 Hz for 1 minute)
Pole wheel Prerequisite: Toothed wheel of a ferrous material (e.g. Steel 1.0036).
Optimal performance with
Involute gear
Tooth width > 10 mm
Side offset < 0.2 mm
Eccentricity< 0.2 mm
Air gap between sensor and Depending on lowest circumferential speed which has to be detected and on

OPERATING INSTRUCTIONS
E12A REV. 0
www.jaquet.com
[e-mail]
Tel.: [phone]
Page 2/3
pole wheel trigger level. See figure.
Electromagneticcompatibility
(EMC) Please contact Jaquet for further details.
Vibration & shock immunity Jaquet Greenline sensors are approved for rough environments. Please contact
Jaquet for further details.
Operating temperature -40°C…125°C
Further Information
Safety All mechanical installations must be carried out by an expert. General safety
requirements have to be met.
Installation The sensor has to be aligned to the pole wheel according to the sensor drawing
independent of its rotational orientation. Deviations in positioning may affect the
performance and decrease the noise immunity of the sensor. During installation,
the smallest possible pole wheel to sensor gap should be set. The gap should
however be set to prevent the face of the sensor ever touching the pole wheel.
A sensor should be mounted with the middle of the face side over the middle of
the pole wheel. Dependent upon the wheel width, a certain degree of axial
movement is permissible. However, the middle of the sensor must be at
minimum in a distance of 3 mm from the edge of the pole wheel under all
operating conditions.
A solid and vibration free mounting of the sensor is important. Eventual sensor
vibration relative to the pole wheel can induce additional output pulses.
The sensors are insensitive to oil, grease etc. and can be installed in arduous
conditions.
Maintenance Product cannot be repaired.
Transport Product must be handled with care to prevent damage of the front face.
Storage Product must be stored in dry conditions. The storage temperature corresponds
to the operation temperature.
Disposal Product must be disposed of properly, it must not be disposed as domestic
waste.

www.jaquet.com
[e-mail]
Tel.: [phone]
Page 3/3
0
N
A
TECHNOLOGY GROUP
I N
CHARGE OF SPEED
OPERATING INSTRUCTIONS
E12A REV. 0
viewA
2:1
B + 0 5/0
r:;!
A +1/0
.JQL
::::t=
i7)
X
14)
,..,
11)
0
x
-
--A
17 hex across flats
connecting diagram:
mates with straight plug M12x1, 4 pins
- m a rkin g
type, logo, CE, fab.code
contact configuration:
1 not connected
2 not connected
3GND
4 signal (-)
FOR TECHNICAL SPECIFICATIONS SEE OPERATING INSTRUGTIONS
dimensions in mm
part no. material Iremarks
-I-
-I-
-I-
-I-
10.11.06/ebi aktualisiert im Rahmen der GreenUne Erweiterung
appli[ation
nominal size range
allowed toleran[e
repla[ement for
first angle
proje[tion drawn
27.09.2006
ebi
dntelsignnture
JAG.UET
chnnge description
part name
-EJ$-
SEale
1:1
approved
3/l, .. o·t-
/)/
TECHNOLOGY GROUP
Thannerstrasse 15
CH-4009 Basel
www.jaquet.com
speed sensor Greenline E12A formal drawing no. rev.
A4
113.586
1
file name 113586_rev1.dft