Temposonics
®
®
Magnetostrictive, Absolute, Non-contact
Linear-Position Sensors
E-Series Model ER
Analog and Digital-Pulse (Start/Stop) Outputs
Data Sheet
SENS
O
RS
Document Part Number:
550996 Revision E
Model ER position sensor-
Stroke Length: 50 mm to 1500 mm (2 in. to 60 in.)
FEATURES
Linear, Absolute Measurement
Non-Contact Sensing Technology
Linearity Deviation Less Than 0.02% F.S.
Repeatability Within 0.001% F.S.
Two Outputs Available:
• Analog (Voltage/Current) Forward or Reverse Acting
• Digital-Pulse Output (Start/Stop)
Simple Sensor Parameter Upload (for Start/Stop)
Stroke Length Range: 50 mm to 1500 mm (2 in. to 60 in.)
Internal Electronics are Sealed for IP67 Ingress Protection
EMI Shielded and CE Certified
BENEFITS
Rugged, Cost Effective, Precise and Durable Non-wear
Alternative to Linear Potentiometers
Extendable and Retractable Dual Rod Ends
The Magnet is Contained and Protected Inside The Sensor
Housing
Over Voltage Protection to 36 Vdc and Polarity Protection
up to -30 Vdc
APPLICATIONS
Continuous Operation In Harsh Industrial Conditions
TYPICAL INDUSTRIES
Factory Automation
Woodworking and Metal Forming
Material Handling and Packaging
Time-based Magnetostrictive position sensing principle
Movable position magnet
Magnetic field encompasses
entire waveguide - generated
by the interrogation pulse
Interrogation
Return wire
Waveguide
Strain-Pulse detector
Bias magnet
Magnetic field from
position magnet
Interaction of magnetic
fields causes waveguide to
generate a strain pulse
Benefits of Magnetostriction
Temposonics linear-position sensors use the time-based magneto-
strictive position sensing principle developed by MTS. Within the
sensing element, a sonic-strain pulse is induced in a specially designed
magnetostrictive waveguide by the momentary interaction of two
magnetic fields. One field comes from a movable permanent magnet
that passes along the outside of the sensor. The other field comes
from an “interrogation” current pulse applied along the waveguide.
The resulting strain pulse travels at sonic speed along the waveguide
and is detected at the head of the sensing element.
The position of the magnet is determined with high precision and
speed by accurately measuring the elapsed time between the applica-
tion of the interrogation pulse and the arrival of the resulting strain
pulse with a high-speed counter. The elapsed time measurement is
directly proportional to the position of the permanent magnet and is
an absolute value. Therefore, the sensor's output signal corresponds
to absolute position, instead of incremental, and never requires
recalibration or re-homing after a power loss. Absolute, non-contact
sensing eliminates wear, and guarantees the best durability and output
repeatability.
All specifications are subject to change. Contact MTS for specifications and
engineering drawings that are critical to your application. Drawings contained
in this document are for reference only. Go to http://www.mtssensors.com for
the latest product documentation and related media.
E-Series Model ER Sensor, Analog and Start/Stop Outputs
Product Overview and Specifications
MTS Sensors continues to establish new performance standards for
low-cost, fully-industrial, durable position sensors using the widely
preferred magnetostrictive technology. This principle for accurate and
non-contact measurement of linear-position sensing was developed
30 years ago by MTS and is used with outstanding success in a large
variety of industrial applications.
The innovative Temposonics model ER sensor brings proven benefits
of magnetostrictive feedback to the versatile rod-and-cylinder sensor
package.
It is ideal for demanding industrial applications where high perfor-
mance non-contact feedback is essential for maximum productivity
and overall reliability. The model ER sensor’s rod-and-cylinder design
has a rod that can extend from the sensor housing. As the rod is
extended and retracted, the sensing magnet remains completely con-
tained and protected at all times, ensuring reliable sensor performance
in the toughest industrial environments.
Product specifications
Parameters
OUTPUT
Measured output
variables:
Resolution:
Position
Analog:
Infinite (restricted by output
ripple)
Start/Stop:
0.1, 0.01 and 0.005 mm
(controller dependent)
< ± 0.02% full stroke
(minimum ± 60 µm)
< ± 0.001% full stroke
(minimum ± 5 µm)
Analog (voltage or current)
Voltage:
0 to 10 Vdc and 10 to 0 Vdc or
Two outputs:
0 to 10 Vdc and 10 to 0 Vdc
(controller input resistance RL
≥ 5k Ohm)
Current:
4 to 20 mA or 20 to 4 mA
(Controller input resistance RL
≤
500
Ohm)
Digital-pulse (Start/Stop):
RS-422 differential signal
Serial parameter upload available for:
Measuring range, offset, gradient,
status and manufacturer number
Stroke length:
ELECTRONICS
Operating
voltage:
+24 Vdc nominal:
-15% or +20%
Polarity protection:
up to -30 Vdc
Over voltage protection:
up to 36 Vdc
Current drain:
Analog: 50 - 140 mA
Start/Stop: 50 - 100 mA
(Stroke length dependent)
Dielectric withstand voltage:
500 Vdc
(DC ground to machine ground)
Range:
50 mm to 1500 mm (2 in. to 60 in.)
EMC test:
Specifications
Parameters
ENVIRONMENTAL
Operating
conditions:
Operating temperature:
-40 °C (-40 °F) to 75 °C (167 °F)
Relative humidity:
90% no condensation
Ingress protection:
IP 67
(when mating connector is correctly
fitted)
Electromagnetic emission:
EN 61000-6-4, CISPR 16
Electromagnetic susceptibility:
EN 61000-6-2, EN 61000-4-2/3/4/6,
CE qualified
100 g (single hit)/
IEC standard EN 60068-2-27
10 g/10 to 2000 Hz, IEC standard
EN 60068-2-6 (resonance frequencies
causing excess of 10 g are excluded)
Analog output:
5-pin (M12) male integral connector
Start/Stop output:
8-pin (M12) male integral connector
Aluminum
Aluminum
Adjustable mounting clamps or dual
rod ends
Specifications
Linearity deviation:
Repeatability:
Outputs:
Shock rating:
Vibration rating:
WIRING
Connection types:
ROD-AND-CYLINDER STYLE SENSOR
Sensor rod:
Sensor housing:
Mounting options:
Temposonics
®
Linear-Position Sensors - Product Data Sheet
E-Series, Model ER, Document Part No.: 550996, Revision E 02/11, 07/11
2
MTS Sensors
E-Series Model ER Sensor, Analog and Start/Stop Outputs
Communication and Programmability
Outputs
ANALOG (VOLTAGE/CURRENT) OUTPUTS
Analog outputs include voltage (0 to 10 Vdc forward
or reverse acting), and current (4 to 20 mA forward or
reverse acting). Since the outputs are direct, no signal
conditioning electronics are needed when interfacing
with controllers or meters
(see 'Figure 1’).
Analog output voltages ranges:
•
0 to 10 Vdc
•
10 to 0 Vdc
•
0 to 10 Vdc and 10 to 0 Vdc
•
4 to 20 mA
•
20 to 4 mA
Active stroke length
(Measuring Range)
Output
value
For
cti
rd a
wa
ng
Rev
ers
e ac
ting
®
Position magnet
Figure 1.
Analog Output signals
DIGITAL START/STOP OUTPUT
The Temposonics E-Series Model ER Start/Stop
output sensors require a start signal from a control-
ler or interface module to initiate the measurement
cycle. The sensor generates a stop signal at the end
Start signal from
controller or
of the measurement cycle that is used to stop the
interface module
controller’s counter clock.
Start/Stop
+ Start
- Start
Start Pulse
Input signals
to sensor
Start pulse `re ection´
The elapsed time between the Start and Stop signals
+ Stop
- Stop
is directly proportional to the magnet’s position
along the active stroke length. The controller can
calculate the absolute position of the magnet from
Time between ‘Start’ and ‘Stop’ pulses
the time value and the sensor’s unique gradient value
is proportional to magnet position
(inverse of the speed for the sonic pulse traveling in
Figure 2.
Start/Stop output signals (RS-422 differential pairs)
the sensor’s waveguide).
(see 'Figure 2’).
Stop pulse
Output signals
from sensor
Communication and programmability
For applications using smart sensor interfaces, the Model ER sensor
with Start/Stop output
(Option
R3)
comes with the ability to perform
sensor parameter uploads. This feature replaces the task of entering
sensor data manually, saving time and preventing possible entry
errors during start-up or for system maintenance.
Note: Start/Stop output (option R3)
When the sensor parameter upload feature is not activated the
Start/Stop output (Option
R3)
remains fully compatible with the
Start/Stop output (Option
R0)
used in the previous generation
E-Series sensor family.
SENSOR PARAMETER UPLOAD FEATURE
The upload feature supports the following sensor parameters:
•
Measuring range
•
Offset
•
Gradient - (Shown as speed of the sonic-strain pulse (m/s) or
inverse speed (μs/in.)
•
Status
•
Manufacturer number
The sensor’s specific parameters can be retrieved by the controller
and interface module at any time, via the sensor’s Start/Stop signal
lines.
The sensor parameter upload feature requires a customer supplied
RS-422 interface. The data format is serial, 4800 Baud, 8-bit data
length. Please contact the factory for additional parameter upload
protocol details.
MTS Sensors
3
Temposonics
®
Linear-Position Sensors - Product Data Sheet
E-Series, Model ER, Document Part No.: 550996, Revision E 02/11, 07/11
E-Series Model ER Sensor, Analog and Start/Stop Outputs
Sensor Dimensions and Mounting
Model ER rod-and-cylinder sensor dimension references
Drawings are for reference only, contact applications engineering for tolerance specific information.
A robust aluminum extrusion forms the sensor housing containing the sensor rod, magnet, sensing element and electronics. The permanent
magnet is mounted on a sliding carrier attached to the end of the rod. As the rod moves in and out, the magnet travels above the sensing
element inside the sensor housing.
MODEL ER ROD-AND-CYLINDER SENSOR
Rod end accessory
(M12)
18 mm (0.7 in.)
Mounting
clamp
20 mm
(0.8 in.)
50 mm
(1.97 in.)
68 mm
(2.68 in.)
51 mm
(2.0 in.)
38 mm
(1.5 in.)
5-pin or
8-pin (M12)
25 mm
(1 in.)
61 mm
(2.4 in.)
Beginning of stroke
Null position
Stroke length 50 to 1500 mm
(2 in. to 60 in.)
End of stroke
71.5 mm (2.8 in.)
Dead zone
3 mm
(0.1 in.)
25 mm
(1 in.)
2 mm
(0.08 in.)
Mounting clamp part no.: 403508
Rod end
(see accessories)
Figure 3.
E-Series model ER rod-and cylinder sensor dimension reference
Sensor mounting (Model ER)
SENSOR MOUNTING CLAMPS
The E-Series model ER sensor is mounted onto the machine with moveable mounting clamps. Grooves for mounting clamps are available on
three sides of the sensor housing, allowing versatile mounting orientations for the sensor’s connector and extension cable. The rod is then
attached to the moving machine part.
Optional rod ends can be used to simplify sensor installation design and facilitate articulated motion sensing. Using dual rod ends the model
ER sensor can be mounted between two independent moving points, such as swinging door applications. Please note for model ER sensors
having stroke lengths over 750 mm (30 in.) only the first 90% of the stroke length can be used for articulated type applications when the weight
of the sensor is supported only by rod ends.
Notes:
1. Mounting clamps are ordered separately. Two mounting clamps, (part number 403508) are required for stroke lengths up to 750 mm (30 in.). A least
one additional mounting clamp is required for longer stroke lengths.
2. MTS recommends using 10-32 cap screws (customer supplied) at a maximum torque of 44 in. lbs. when fastening mounting clamps.
Model ER sensor mounting and installation reference
4 Holes
5.4 mm
(0.21 in.) dia.
2 mm
(0.08 in.)
Mounting method
31 mm
(1.2 in.)
50 mm
(1.97 in.)
9 mm
(0.36 in.)
10 mm
(0.4 in.)
Part number
68 mm
(2.68 in.)
Mounting clamp
Sensor mounting for sensor
model ER
403508
Mounting clamp width:
14.6 mm (0.57 in.)
Mounting
clamp
Three possible mounting
configuration using mounting
clamp and screws
Mounting
clamp,
part number
403508
Temposonics
®
Linear-Position Sensors - Product Data Sheet
E-Series, Model ER, Document Part No.: 550996, Revision E 02/11, 07/11
4
MTS Sensors
E-Series Model ER Sensor, Analog and Start/Stop Outputs
Sensor Mounting
Model ER sensor mounting and installation reference
36 mm (1.4 in.)
21 mm
15 mm
36
(0.8
(1.4 in.)
mm
in.)
(0.6 in.)
21 mm
15 mm
(0.8 in.)
(0.6 in.)
1/4 - 28 UNF
6 mm
(0.24 in.) dia.
6 mm
(0.24 in.) dia.
7.2 mm (0.3 in.)
7.2 mm (0.3 in.)
Mounting method
Rod end
US customary measurement
Optional, male 1/4 - 28 threads
Part number
254235
27 mm
(1.1 in.)
27 mm
9.5 mm (0.4 in.)
(1.1 in.)
9.5 mm (0.4 in.)
1/4 - 28 UNF
36 mm (1.4 in.)
21
(1.4
36 mm
mm
in.)
15 mm
(0.8 in.)
(0.6 in.)
21 mm
15 mm
(0.8 in.)
(0.6 in.)
M6 x 1
M6 x 1
(0.24 in.) dia.
6 mm
(0.24
6 mm
in.) dia.
(1.1 in.)
9.5 mm (0.4 in.)
9.5 mm (0.4 in.)
27 mm
27
(1.1 in.)
mm
Rod end
Metric measurement
Optional, male M6 threads
254210
7.2 mm (0.3 in.)
7.2 mm (0.3 in.)
53 mm
(2.1 in.)
1/4 in. Jam nut
Threaded rod
Mounting hardware:
(1/4 - 28 UNF)
1/4 in. Hex nuts (2 ea.)
14 mm (0.56 in.) O.D. Washer
Stud end
Optional mounting hardware kit
Hex nuts (2 pcs.), jam nut and
washer
251975
MTS Sensors
5
Temposonics
®
Linear-Position Sensors - Product Data Sheet
E-Series, Model ER, Document Part No.: 550996, Revision E 02/11, 07/11
