Turck Section M Selection Guide
TURCK
Innovative Solutions for Automation
Selection Guide - Section M
Introduction to Sensor Products
Introduction ..............................................M2
Glossary of Terms .........................................M3-M4
General Specifications
Operating Principles ........................................M5-M6
Operating Distances ........................................M7-M8
Wiring Instructions - DC (Green)
DC Outputs, Short-Circuit and Overload Protection, TTL Compatible ..................M11
Sinking and Sourcing .........................................M11
"AD" 2-Wire DC Output ........................................M11
"AN4" and "AP4", "AN6(7)" and "AP6(7)" 3-Wire DC Outputs .......................M12
"VN4" and "VP4", "VN6" and "VP6" 4-Wire DC Outputs..........................M13
"LIU" 4-Wire Linear Analog DC Output .................................M15
Series / Parallel Connection ...................................M15 - M16
Wiring Instructions - AC (Red)
Short-Circuit and Overload Protection .................................M17
AC and AC/DC Outputs ........................................M18
Series Connection, Mechanical Switches in Series............................M19
Parallel Connection, Mechanical Switches in Parallel ..........................M20
Wiring Instructions - NAMUR (Blue)
NAMUR (Y0 and Y1) Outputs, Typical Output Curves ..........................M21
Typical Intrinsically Safe Installation, Interface Circuits .........................M22
eurofast
Innovative Sensor Solutions ...................................M25 - M26
®
Pinout Diagrams and Mating Cordset .........................M23 - M24
General Specifications
................................................M27 - M32
Compliances and Hazardous Locations
Third Party Compliances .....................................LL33M33
Hazardous Location Approvals .................................M33 - M34
Enclosure Ratings and Material Properties
Enclosure Ratings ...........................................M35
Material Descriptions - Plastic and Metal ................................M36
Matrix of TURCK Sensor Materials ................................M37 - M38
Chemical Compatibility ........................................M38
M1 B1008 TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
Important Safety Warning!
TURCK sensors and peripheral devices DO NOT include the self-checking redundant circuitry required to
permit their use in personnel safety applications. A device failure or malfunction can result in either an
energized or a de-energized output condition.
Never use these products as sensing devices for personnel protection. Their use as safety devices may create
unsafe conditions that could lead to serious bodily injury or death.
Selection Guide - Section M
How does Proximity Sensing compare to conventional methods?
TURCK proximity sensors are entirely solid state electronic controls that contain no moving parts to wear out as do mechanical
switches. They require no physical contact for actuation, no cams or linkages, have no contacts to bounce or arc and are completely
encapsulated, making them impervious to most liquids, chemicals and corrosive agents. In addition, TURCK has a line of sensors that
can be used in hazardous explosive environments without any special enclosures.
See Hazardous Area Locations in Section A.
If any of the following conditions exists, a Proximity Sensor should be used:
• The object being detected is too small, too lightweight, or too soft to operate a mechanical switch.
• Rapid response and high switching rates are required, as in counting or ejection control applications.
• Object has to be sensed through non-metallic barriers such as glass, plastic, or paper carton.
• Hostile environments demand improved sealing properties, preventing proper operation of mechanical switches.
• Long life and reliable service are required.
• Fast electronic control system requires bounce-free input signal.
Proximity Sensors are being used today in all industries:
Mining and Metallurgy Sheet Metal Fabrication
Foundries Automotive and Appliance Plants
Automatic Assembly and Robotics Electroplating Installations
Conveyor Systems in Airports and Factories Can Plants, Food Processing and Breweries
Chemical Plants and Oil Refineries Shipyards, Docks, and Off-shore Drilling Rigs
Semiconductor Equipment PC-board Handling Machinery
Typical applications:
Parts Detection Void or Jam Control Valve Position Indication
Parts Counting Feed Control Missing Parts Control
Positioning Indexing Parts Diverting
Motion and Speed Control Inter-lock Control Coin Counting and Sorting
Bottle Cap or Can Lid Detection Liquid Level Control Edge Guide Control
Punch Press Feed and Ejection Control Leak Detection Robotics and Conveyors
Broken or Damaged Tool Detection Machine Programming
TURCK Inc. Minneapolis, MN 55441 B1008 M2
Specifications
TURCK
Innovative Solutions for Automation
Axial Approach
The approach of the target with its center maintained on
the sensor reference axis.
Axially Polarized Ring Magnet
A ring magnet whose poles are the two flat sides of the disk.
Mounted on pistons for permaprox
sensing through nonmagnetic cylinder walls.
Capacitive Proximity Sensor
A proximity sensor producing an electrostatic field that
senses conductive targets and nonconductive materials
having a dielectric constant of >1 within its sensing zone.
Complementary Output
Two outputs, one N.O. and one N.C., that can be used
simultaneously. The sum of both load currents cannot
exceed the sensor’s rated Continuous Load Current.
Continuous Load Current
The maximum current allowed to continuously flow
through the sensor output in the ON state.
Correction Factors
Percentage of the rated operating distance (Sn) that
represents the operating distance for targets constructed
from materials other than mild steel (mild steel’s correction
factor is 1.0).
Differential Travel (Hysteresis)
The difference between the operating point as the target
approaches the sensor face, and the release point as the
target moves away. Given as a percentage of the operating
distance (Sn).
Dynamic Output
A sensor output that stays energized for a set duration
of time, independent of the time the target is present
(one-shot).
Embeddable (Shielded) Proximity Sensor
A sensor that can be flush-mounted in any material without
that material influencing the sensing characteristics.
Free Zone
The space around a proximity sensor that must be
kept free of any material capable of affecting the
sensing characteristics.
Inductive Proximity Sensor
A proximity sensor producing an electromagnetic field
that senses only metal targets within its sensing zone.
Inductive Magnet Operated Sensor (permaprox ®)
A solid-state sensor consisting of a sensing element
susceptible to magnetic field strengths of 20-350 Gauss, and
switching circuitry similar to that of an inductive proximity
sensor.
®
cylinder position
Inrush Current
The maximum short-term load current that the output
of a sensor can tolerate.
IP Rating
Ingress Protection rating per IEC 529.
Lateral Approach
The approach of a target perpendicular to the sensor
reference axis.
Load
A device or circuit that is operated by the energy output
of another device such as a proximity sensor.
M Threading
ISO 68 Metric straight threading, designated as
“Nominal Size” X “Pitch”, in mm. (Ex. M5X0.5)
Minimum Load Current
The minimum amount of current that is required by
the sensor for reliable operation.
NAMUR
The acronym for a European standards organization.
NAMUR Sensor
A 2-wire variable-resistance DC sensor whose operating
characteristics conform to DIN 19 234. Requires a
remote amplifier for operation. Typically used for
intrinsically safe applications.
NEMA Rating
An enclosure rating per NEMA Standard 250.
No-Load Current
The current drawn by a DC proximity sensor from the power
supply when the outputs are not connected to a load.
Nonembeddable (Nonshielded) Proximity Sensor
A sensor is nonembeddable when a specified free zone
must be maintained around its sensing face in order
not to influence the sensing characteristics.
Normally Closed (N.C.)
The output is OFF when the target is detected by
the sensor.
Normally Open (N.O.)
The output is ON when the target is detected by
the sensor.
NPN Output (Current Sinking)
A transistor output that switches the common or negative
voltage to the load. Load is between sensor and positive
supply voltage.
NPSM Threading
American National Standard Straight Pipe Thread for
Free-Fitting Mechanical Parts.
M3 B1008 TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
NPT Threading
American National Standard Taper Pipe Thread.
Off-State (Leakage) Current
The current that flows through the load circuit when
the sensor is in the OFF-state. Also known as leakage
or residual current.
Operating Distance
A distance at which the target approaching the sensing face
along the reference axis causes the output signal to change.
Overload Protection
The ability of a sensor to withstand load currents between
continuous load rating and short-circuit condition with
no damage.
PG Threading
Steel conduit threading per German standard DIN 40 430.
PNP Output (Current Sourcing)
Transistor output that switches the positive voltage to
the load. Load is between sensor and common.
Programmable Output
Sensor output whose N.O. or N.C. function can be selected
by means of a jumper or specific terminal connection.
Radially Polarized Ring Magnet
A ring magnet whose poles are the inner and outer
diameter rings.
Rated Operating Distance (Sn)
A conventional quantity used to designate the operating
distance. It does not take into account either
manufacturing tolerances or variations due to external
conditions such as voltage and temperature.
Reference Axis
An axis perpendicular to the sensing face and passing
through its center.
Repeatability
The difference between actual operating distances
measured at a constant temperature and voltage over
an 8-hour period. It is expressed as a percentage (%) of
rated operating distance (Sn).
Response frequency
The maximum rate that the output can change in response
to the input and still maintain linearity.
Response Time
The time required for the device switching element to
respond after the target enters or exits the sensing zone.
Reverse Polarity Protection
Internal components that keep the sensor from being
damaged by incorrect polarity connection to the
power supply.
Ripple
The alternating component remaining on a DC signal after
rectifying, expressed in percentage of rated voltage.
Sensing Face
The surface of the proximity sensor through which the
electromagnetic (or electrostatic) field emerges.
Short-Circuit Protection
The ability of a sensor to withstand a shorted condition (no
current-limiting load connected) without damage.
Slew Rate
The rate of change of the output voltage with respect to a
step change in input. A change in output of 0 to 10 volts at
a slew rate of 1.25 V/ms would take 8 ms to slew to the new
value.
Solid State
Pertains to devices using semiconductors instead of
mechanical parts.
Static Output
A sensor output that stays energized as long as the target
is present.
Switching Frequency
The maximum number of times per second that the sensor
can change state (ON and OFF) under ideal conditions,
usually expressed in Hertz (Hz).
Time-Delay Before Availability
The length of time after power is applied to the sensor
before it is ready to operate correctly, expressed in
milliseconds (ms).
Uprox Sensor ®
An inductive proximity sensor that detects all metals at the
same range. Uprox sensors are inherently weld-field
immune, operate over a wider temperature range and have
a higher switching frequency than standard inductive
sensors.
Uprox+ Sensor ®
Same basic characteristics as the Uprox Sensor, but with a
redesigned multi coil system which provides increased
sensing capabilities. Uprox+ also carries an IP68
environmental rating
Weld-Field Immunity (WFI)
The ability of a sensor not to false-trigger in the presence
of strong magnetic fields typically produced by resistance
welders.
Wire-Break Protection
Results in the output being OFF on a DC sensor if either
supply wire is broken.
Specifications
TURCK Inc. Minneapolis, MN 55441 B1008 M4
TURCK
Innovative Solutions for Automation
Operating Principle Ferrite Core
Figure 1
An inductive proximity sensor consists of a coil and ferrite core arrangement, an oscillator and detector circuit, and a solid-state
output (Figure 1). The oscillator creates a high frequency field radiating from the coil in front of the sensor, centered around the axis
of the coil. The ferrite core bundles and directs the electro-magnetic field to the front.
When a metal object enters the high-frequency field, eddy currents are induced on the surface of the target. This results in a loss of
energy in the oscillator circuit and, consequently, a smaller amplitude of oscillation. The detector circuit recognizes a specific change
in amplitude and generates a signal which will turn the solid-state output “ON” or “OFF”. When the metal object leaves the sensing
area, the oscillator regenerates, allowing the sensor to return to its normal state.
Embeddable (Shielded) vs. Nonembeddable (Nonshielded)
See mounting characteristics at the front of each section.
Figure 2
Embeddable construction includes a metal band
that surrounds the ferrite core and coil
arrangement. This helps to “bundle” or direct the
electro- magnetic field to the front of the sensor.
Figure 3
Nonembeddable (Nonshielded Sensor)Embeddable (Shielded Sensor)
Nonembeddable sensors do not have this
metal band; therefore, they have a longer
operating distance and are side sensitive.
M5 B1008 TURCK Inc. Minneapolis, MN 55441
Industrial
15
Automation
Uprox ® and Uprox+ ® Characteristics
No Correction Factor - Same rated operating distance for all metals.
•
Extended Operating Distance - Up to 400% greater than standard inductive sensors when using non-ferrous targets (Figure 4).
•
Weld Field Immunity - Uprox is unaffected by strong electromagnetic AC or DC fields because of its unique patented design.
•
High Switching Frequencies - Up to 10 times faster than standard inductive sensors.
•
Extended Temperature Range - Uprox can withstand temperatures up to 85°C (+185°F) with a ±15% temperature drift.
•
Figure 4
Standard
Ni 8-M18-..
TURCK Uprox is a patented next generation
development of inductive sensors that uses a
multi-coil system. Active coil(s) induces eddy
currents on the metal target and passive coil(s) are
affected by these eddy currents. Ferrous and
nonferrous metals have the same effect on the two
coils. Therefore, all metals, including galvanized
metals, have the same rated operating distance.
TURCK standard inductive sensors use a single coil
randomly wound around a ferrite core. The single
coil both induces eddy currents on the metal target
and is affected by these eddy currents. Ferrous and
nonferrous metals affect the sensor differently,
making it impossible to detect both types of metals
at the same rated operating distance.
Uprox
Ni15U-M18-..
Operating Principle Uprox ® and Uprox+ ®
Figure 5
Specifications
Operating distances comparison of Uprox
sensors and standard inductive sensors.
TURCK Inc. Minneapolis, MN 55441 B1008 M6
TURCK
Innovative Solutions for Automation
Operating Distance (Sensing Range) Considerations
The operating distance (S) of the different models is basically a function of the diameter of the sensing coil. Maximum operating
distance is achieved with the use of a standard or larger target. Rated operating distance (Sn) for each model is given in the manual.
When using a proximity sensor the target should be within the assured range (Sa).
Standard Target
A square piece of mild steel having a thickness of 1 mm (0.04 in) is used as a standard target to determine the following operating
tolerances. The length and width of the square is equal to either the diameter of the circle inscribed on the active surface of the
sensing face or three times the rated operating distance Sn, whichever is greater.
Operating Distance = S
The operating distance is the distance at which the target approaching the sensing face along the reference axis causes the output
signal to change.
Rated Operating Distance = Sn
The rated operating distance is a conventional quantity used to designate the nominal operating distance. It does not take into
account either manufacturing tolerances or variations due to external conditions such as voltage and temperature.
Effective Operating Distance = Sr 0.9 Sn≤Sr≤1.1Sn
The effective operating distance is the operating distance of an individual proximity sensor at a constant rated voltage and 23°C
(73°F). It allows for manufacturing tolerances.
Usable Operating Distance = Su 0.81 Sn≤Su≤1.21Sn
The usable operating distance is the operating distance of an individual proximity sensor measured over the operating temperature
range at 85% to 110% of its rated voltage. It allows for external conditions and for manufacturing tolerances.
Assured Operating Range = Sa 0 ≤ Sa ≤ 0.81Sn
The assured actuating range is between 0 and 81% of the rated operating distance. It is the range within which the correct operation
of the proximity sensor under specified voltage and temperature ranges is assured.
Figure 6
M7 B1008 TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
Operating Distance (Sensing Range) Considerations
These correction factors apply to standard inductive sensors when a nonferrous target is being detected.
The correction factors are nominal values. Deviations may be due to variations in oscillator frequency, alloy composition, purity
and target geometry.
Aluminum foil 1.00
Stainless steel 0.60 to 1.00
Mercury 0.65 to 0.85
Lead 0.50 to 0.75
Brass 0.35 to 0.50
Aluminum (massive) 0.35 to 0.50
Copper 0.25 to 0.45
Correction factors do not apply to TURCK Uprox®sensors. These sensors see all metals at the same range.
•
TURCK also manufactures “nonferrous only” sensors. These sensors will selectively detect nonferrous targets at the rated
•
operating distance. They will not detect ferrous targets; however, ferrous targets positioned between them and a
nonferrous target may mask the nonferrous target. The rated operating distance of these sensors is not subject to the
correction factors that apply to standard inductive sensors.
Differential Travel (Hysteresis)
The difference between the “operate” and “release”
points is called differential travel (See shaded area in
Figure 7).It is factory set at less than 15% of the effective
operating distance.
Differential travel is needed to keep proximity sensors from
“chattering” when subjected to shock and vibration, slow
moving targets, or minor disturbances such as electrical noise
and temperature drift.
Figure 7
Specifications
Actuation Mode
Inductive sensors can be actuated in an axial or lateral approach (See Figure 7). It is important to maintain an air gap between the
target and the sensing face to prevent physically damaging the sensors.
TURCK Inc. Minneapolis, MN 55441 B1008 M8
TURCK
Innovative Solutions for Automation
Maximum Switching Frequency
Minimum parameters for measuring at maximum switching frequency are shown in Figure 8. Using a smaller target or space may
result in a reduction of a specific sensor’s maximum switching frequency and decrease sensor to target air gap tolerance. See page
M7 for determining dimension “A” of standard target.
Weld Field Immunity
Many critical applications for proximity sensors involve their use in weld field environments. AC and DC resistance welders used in
assembly equipment and other construction machines often require in excess of 20 kA to perform their weld function. Magnetic
fields generated by these currents can cause false outputs in standard sensors.
TURCK has pioneered the design and development of inductive proximity sensors that not only survive such environments, but
remain fully operative in them.
The limit of the weld field immunity depends on the kind of field (AC or DC), the housing size of the sensor and its location in the
field. For example, in an AC or DC weld field, the “/S34" inductive sensors can be positioned one inch from a 20 kA current carrying
bus. See Section H for a list of weld field immune sensors.
Reference values for magnetic induction:
Distance [mm]
I [kA]
5
10
20
50
100
Gauss = 10 x mT
12.5
80 mT
160 mT
320 mT
800 mT
1600 mT
25
40 mT
80 mT
160 mT
400 mT
800 mT
50
20 mT
40 mT
80 mT
200 mT
400 mT
100
10 mT
20 mT
40 mT
100 mT
200 mT
M9 B1008 TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
TURCK inductive proximity sensors are manufactured with a shielded coil, designated by “Bi” in the part number, and a
nonshielded coil, designated by “Ni” in the part number. Embeddable (shielded) units may be safely flush-mounted in
metal. Nonembeddable (nonshielded) units require a metal free area around the sensing face. Because of possible
interference of the electromagnetic fields generated by the oscillators, minimum spacing is required between adjacent
or opposing sensors.
It is good engineering practice to mount sensors horizontally or with the sensing face looking down. Avoid sensors that
look up wherever possible, especially if metal filings and chips are present.
Maximum Locknut Torque Specifications
The locknut torque should be considered for all threaded sensors to prevent the housing from being over stressed.
The values below pertain to the locknut provided with each sensor. Liquid thread sealants of an anaerobic base, such as
Loctite, are recommended if strong vibrations are likely.
Caution: Sensor barrels are typically brass. Consider break torque when selecting grade of thread sealant.
Mounting
Barrel Size Metal Barrel Plastic Barrel
5 mm 5 Nm (3.7 ft-lb) ---8 mm 10 Nm (7.4 ft-lb) ---12 mm 10 Nm (11 ft-lb) 1 Nm (0.7 ft-lb)
18 mm 25 Nm (18 ft-lb) 2 Nm (1.4 ft-lb)
30 mm 90 Nm (66 ft-lb) 5 Nm (3.7 ft-lb)
47 mm 90 Nm (66 ft-lb) ----
Drill Hole Sizes for Metric Threads
Thread Size Pitch Thru Hole (mm) Tap Hole Dia. (mm) Thru Hole (in) Tap Hole Dia. (in)
M5 x 0.5 0.5 5.0 4.5 13/64 5/32
M8 x 1 1.0 8.0 7 21/64 1/4
M12 x 1 1.0 12.0 11 31/64 13/32
M18 x 1 1.0 18.0 17 23/32 41/64
M30 x 1.5 1.5 30.0 28 1-3/16 1-5/64
Specifications
PG 9 1.41 15.2 14 5/8 1/2
PG 13.5 1.41 20.4 19 13/16 23/32
PG 36 1.59 47.0 45.5 1-7/8 1-47/64
TURCK Inc. Minneapolis, MN 55441 B1008 M10
TURCK
Innovative Solutions for Automation
DC Outputs
Two-, three-, or four-wire proximity sensors contain a transistor oscillator and a snap-action amplifier. This provides exceedingly high
accuracy to a set switching point, even with very slowly approaching targets. Switching characteristics are unaffected by supply
voltage fluctuations within the specified limits.
The sensors can drive electromechanical relays, counters, solenoids, or electronic modules, and interface directly with logic systems
or programmable controllers without additional interface circuitry. They are available with either NPN output transistors (current
sinking) or PNP output transistors (current sourcing).
Load current ratings vary from 100 mA to 200 mA depending on physical size. Standard voltage range is 10-30 VDC with certain
types available for 10-65 VDC. All models incorporate wire-break, transient and reverse polarity protection.
Power-On false pulse suppression is also standard.
Short-Circuit and Overload Protection
TURCK DC sensors with a Voltage Range designation of "4", "6" or "8" in the part number are short-circuit and overload protected
(automatic reset). These sensors incorporate a specially designed circuit which continuously monitors the ON state output current
for a short-circuit or overload condition. If either of these fault conditions occurs, the output is turned OFF and pulse tested until the
fault is removed. This added protection causes a ≤1.8 V drop across the output in the normal ON state. This may be a problem when
interfacing with some logic low inputs (see TTL compatibility).
TTL Compatibility
Some solid-state loads requiring NPN (sinking) input signals need a ≤0.8 V signal to reliably turn ON. The output of these sensors will
have a voltage drop of ≤0.7 V (0.3 V typical), which will ensure reliable operation. Do not use voltage ranges "4" and '6" when TTL
compatibility is required. Contact the factory for a list of part numbers with this specification.
Figure 2Figure 1
Voltage drop is measured from output wire black (BK) to ground wire blue (BU).
M11 B1008 TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
DC Sourcing and Sinking
2-Wire DC
Figure 3 Source (PNP)
Figure 6 Sink (NPN)
Figure 4 Sink (NPN)
Note: TURCK 2-wire DC
sensors with an "AD"
designation are not
polarity sensitive and can
be used to sink or source
a load.
3-Wire DC
Figure 5 Source (PNP)
Figure 7
Figure 9
Figure 8
DC Outputs
“AD” 2-Wire DC Output
“AG” 2-Wire DC Output
Specifications
TURCK Inc. Minneapolis, MN 55441 B1008 M12
Loading...