Material Descriptions - Plastic and Metal ................................M36
Matrix of TURCK Sensor Materials ................................M37 - M38
Chemical Compatibility ........................................M38
M1 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
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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.
Parts DetectionVoid or Jam ControlValve Position Indication
Parts CountingFeed ControlMissing Parts Control
PositioningIndexingParts Diverting
Motion and Speed ControlInter-lock ControlCoin Counting and Sorting
Bottle Cap or Can Lid DetectionLiquid Level ControlEdge Guide Control
Punch Press Feed and Ejection ControlLeak DetectionRobotics and Conveyors
Broken or Damaged Tool DetectionMachine Programming
TURCK Inc. Minneapolis, MN 55441B1008 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 cannotexceed 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 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
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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 55441B1008 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.
Nonembeddable sensors do not have this
metal band; therefore, they have a longer
operating distance and are side sensitive.
M5 B1008TURCK 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 55441B1008 M6
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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 = Sr0.9 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 = Su0.81 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 = Sa0 ≤ 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 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
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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 foil1.00
Stainless steel0.60 to 1.00
Mercury0.65 to 0.85
Lead0.50 to 0.75
Brass0.35 to 0.50
Aluminum (massive)0.35 to 0.50
Copper0.25 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 55441B1008 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 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
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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.
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 B1008TURCK Inc. Minneapolis, MN 55441
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DC Sourcing and Sinking
2-Wire DC
Figure 3Source (PNP)
Figure 6Sink (NPN)
Figure 4Sink (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.
NPN transistor
(i.e. current sinking
negative switching)
N.O. output
PNP transistor
(i.e. current sourcing
positive switching)
N.O. output
•
Order current sinking (NPN) sensors with
the voltage range “7" only when low
voltage drop for TTL gates is required. In all
other cases, order sensors with voltage
ranges ”4" or “6".
NPN transistor
(i.e. current sinking
negative switching)
complementary
output (SPDT)
PNP transistor
(i.e. current sourcing
positive switching)
complementary
output (SPDT)
Specifications
TURCK Inc. Minneapolis, MN 55441B1008 M14
TURCK
Innovative Solutions for Automation
DC Outputs
“LIU" 4-Wire Linear Analog DC Output
Figure 18Electronic Output Circuit
Figure 20Wiring Diagram
Figure 19Typical Response Curve
Linear Analog Output; Current and Voltage
Series/Parallel Connection
Logic functions with DC proximity sensors:
Self-contained proximity sensors can be wired in series or parallel to perform such logic functions as AND, OR, NAND, NOR. The
wiring diagrams show the hook-up of four sensors with NPN and PNP outputs.
Take into account the accumulated no-load current and voltage drop per sensor added in the series string.
Series-connection:
N.O. sensors:AND Function
(target present, all sensors: load “on”)
N.C. sensors:NOR Function
(target present, any sensor: load “off”)
Parallel-connection:
N.O. sensors:OR Function
(target present, any sensor: load “on”)
N.C. sensors:NAND Function
(target present, all sensors: load “off”)
TURCK TIP
•
To prevent the load from seeing the cumulative voltage drop of multiple 3-wire sensors in series, alternating polarity sensors can
be used provided that the desired polarity is at the load.
•
Wiring 3-wire sensors in series delays the load by the accumulated “time delay before availability" of all sensors in the string.
M15 B1008TURCK Inc. Minneapolis, MN 55441
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Figure 21NPN Connection
Series/Parallel Connection
Figure 22PNP Connection
Specifications
TURCK Inc. Minneapolis, MN 55441B1008 M16
TURCK
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Short-Circuit and Overload Protection
TURCK AC sensors with the Voltage Range designation “30", “32" or ”40" are short-circuit and overload protected
(manual 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 latched
OFF until the power has been cycled OFF and ON again.
Always select short-circuit and overload protected sensors whenever possible.
CAUTION!
DO NOT…
operate an incandescent light bulb as a load.
The extremely high cold current will cause an overload condition.
DO NOT…
operate a proximity sensor from a wall outlet without a load.
This is considered a “dead” short and can cause catastrophic
damage to nonshort-circuit protected sensors.
DO NOT…
directly operate a motor with a proximity sensor.
The inrush current can cause an overload condition.
Always use a motor starter, relay or other appropriate device.
DO NOT…
forget to ground. AC and AC/DC sensors must be grounded or there exists
a potential of electrical shock.
M17 B1008TURCK Inc. Minneapolis, MN 55441
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AC and AC/DC Outputs
Figure 1AC/DC Outputs - "3", "31", "33", non-SCP
SCP = Short-circuit Protected
These sensors are used as pilot devices for AC-operated loads such as relays, contactors, solenoids, etc. The solid-state output
permits use of the sensors directly on the line in series with an appropriate load. They, therefore, replace mechanical limit switches
without alteration of circuitry, where operating speed or environmental conditions require the application of solid-state sensors.
These sensors are typically available in a voltage range of 20-250 VAC. All models are available with either normally open (N.O.),
normally closed (N.C.) or programmable outputs (from N.O. to N.C.). Careful consideration must be given to the voltage drop across
AC/DC sensors when used at 24 VDC.
Figure 2AC/DC Outputs - "30", "32", "40" SCP
Figure 3Electro-Mechanical Equivalents
Since the sensors are connected in series with the
load by means of only two leads, an off-state
current flows through the load in the magnitude of
approximately 1.7 mA.
This, however, does not affect the proper and
reliable performance of most AC loads. Another
characteristic of solid state sensors isa5to7volt
drop developed across the sensor in the ON state.
All models contain a snubber network to protect
against transients from inductive loads, which can
cause false triggering.
Specifications
TURCK Inc. Minneapolis, MN 55441B1008 M18
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Innovative Solutions for Automation
Series Connection
Figure 4
Series-connection: (Figure 4)
N.O. sensors: AND Function
(target present, all sensors: load “on”)
N.C. sensors: NOR Function
(target present, any sensor: load “off”)
The maximum number of sensors to be operated in series depends on the stability of the line voltage and the operating
characteristics of the load in question. The supply voltage minus the accumulative on state voltage drop across the series connection
(approximately 7 Vrms per sensor) must be ≥ the minimum required load voltage.
Mechanical Switches in Series
Problem:
Mechanical switches in series with proximity sensors should always
be avoided because they can create an open circuit, leaving the
proximity sensor without power. In order to operate properly, a
proximity sensor should be powered continuously. A typical
problem encountered when the mechanical contact closes while
the target is present is a short time delay that is experienced before
the load energizes (time delay before availability).
Solution:
A33kΩ, 1W by-pass resistor can be added across the mechanical
contact to eliminate the time delay before availability. This will
allow enough leakage current to keep the sensor ready for
instantaneous operation.
Figure 5
Figure 6
M19 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
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Parallel Connection
Figure 7
Parallel Connection: (Figure 7)
N.O. sensors: OR Function
(target present, any sensor: load “on”)
N.C. sensors: NAND Function
(target present, all sensors: load “off”)
Wiring AC proximity sensors in parallel can result in inconsistent operation and should generally be avoided.
On-state voltage drop: With any sensor ON, the voltage across all other sensors is typically 7 Vrms. Since the minimum rated
voltage for AC sensors is 20 Vrms, no other sensor with a target present can turn ON until the first sensor turns OFF. This transition is
not instantaneous due to the time delay before availability, during which the load may drop out.
Leakage current through the load: This is equal to the total leakage of all sensors wired in parallel. Too much leakage into a solid
state load can cause the input to turn ON and not turn OFF. Small relays may not drop out if the leakage current exceeds the relay’s
holding current.
Figure 8
Figure 9
Formula:
minimum operating voltage of proximity sensor
R=
load current at operating voltage
Mechanical Switches in Parallel
Problem:
As previously discussed, proximity sensors should be
powered continuously to avoid the time delay before
availability during power-up.
With mechanical switches in parallel, the sensor is
shorted out every time the contact is closed, leaving it
without power. If the target is present when the
mechanical contact is opened, a small delay will be
experienced during which the load may drop out.
Solution:
This delay can be avoided by adding a resistor in series with the mechanical
contact. The voltage drop developed across the resistor with the contact closed
will be enough to keep the sensor active. Use the formula below to determine the
value and wattage.
Example:
20 V
R=
180 mA
R = 110 W
Minimum resistor wattage rating: E x I
Example: 20 V x 180 mA = 3.6 W
recommended
≈ 5 watts
Specifications
TURCK Inc. Minneapolis, MN 55441B1008 M20
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NAMUR (Y0 and Y1) Output
NAMUR sensors are 2-wire sensing devices used with switching amplifiers. Because of the small amount of energy needed to operate
NAMUR sensors, they can be used in intrinsically safe applications.
The operation of this sensor is similar to that of a variable resistor with a change in impedance as a target approaches the sensor.
When no metal is being sensed, the inductive sensor is in a low impedance state and draws a current of more than 2.2 mA. When a
metal target enters the high-frequency field radiated from the sensor head, the impedance increases as the target approaches. When
fully damped, the sensor draws less than 1.0 mA. Note: For capacitive and inductive magnet operated sensors, the current change
characteristics are opposite.
The current differential from the undamped to the damped (metal present) state is used to trigger an amplifier at a defined switching
point. These sensors contain a relatively small number of components, which allows the construction of small devices and also
assures a high degree of reliability.
In the undamped and damped state, the devices have fairly low impedance and are therefore, unaffected by most transients. NAMUR
sensor circuits operate on direct current. Therefore, cable runs of several sensors may be run parallel to one another without mutual
interference.
The NAMUR (Y0 and Y1) sensor behaves like
a variable resistor when a target
approaches.
The impedence increases or decreases
between 1 kΩ and8kΩ.
Typical Output Curves
Figure 2
Note:
The typical curve of
current versus sensing
distance with 8.2 V DC
supply and 1 kΩ source
impedence. All NAMUR (Y0
and Y1) sensors are
calibrated to pass through
1.55 mA at nominal
sensing range±10%.
Figure 1
Figure 3
M21 B1008TURCK Inc. Minneapolis, MN 55441
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Typical Intrinsically Safe Installation
Figure 4
For guidance on installation of TURCK intrinsically safe systems, refer to the Instrument Society of America publication
ISA-RP12.6-1995, “Wiring Practices for Hazardous (Classified) Locations Instrumentation".
The complete line of Intrinsically Safe and Associated Apparatus is featured in the TURCK “Isolated Barriers and Amplifiers” catalog.
Custom Interface Circuits
Figure 5
NAMUR sensors can operate outside the nominal operating values when the sensor is used in a nonhazardous area.
The supply voltage limits are: V
If these values are used, the current Isncorresponds to the rated operating distance (Sn) of the sensor.
NAMUR sensors are short-circuit protected up to 15 VDC and reverse polarity protected up to 10 VDC.
TURCK Inc. Minneapolis, MN 55441B1008 M22
TURCK
Innovative Solutions for Automation
eurofast ® Pinout Diagrams and Mating Cordset
AD4X-H1141
Mating Cordset: RK 4.2T-*
AD4X-H1144
Mating Cordset: RK 4.2T-*/S674
RD4X-H1141
Mating Cordset: RK 4.21T-* (Y0)
RD4X-H1143
Mating Cordset: RK 4.2T-*
AG41X-H1341
Mating Cordset: RK 4.23T-*/S748
AP6X-H1141/H1341
Mating Cordset: RK 4T-*
AN6X-H1141/H1341
Mating Cordset: RK 4T-*
M23 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
eurofast ® Pinout Diagrams and Mating Cordset
RN6X-H1141
Mating Cordset: RK 4.4T-*
RN6X-H1143/H1343
Mating Cordset: RK 4.42T-*
RP6X-H1141
Mating Cordset: RK 4.4T-*
RP6X-H1143/H1343
Mating Cordset: RK 4T-*
AG41X-H3141
Mating Cordset: RK 4.23T-*/S748
VP4X2-H1141/H1341
Mating Cordset: RK 4.4T-*
VN4X2-H1141/H1341
Mating Cordset: RK 4.4T-*
Specifications
TURCK Inc. Minneapolis, MN 55441B1008 M24
TURCK
Innovative Solutions for Automation
Innovative Sensor and Connector Solutions
TURCK is the market leader in providing innovative sensor and connectivity solutions for industrial automation. Combine
TURCK's high quality, high performance sensors with our ability to quickly mold multiple styles of cordsets give our customers
an infinite selection of unique connectorized sensing solutions.
All TURCK sensors with potted-in cable are available with customized cable length and connector options. The broadest
selection of connector options provides custom sensing solutions for the most diverse industrial applications.
Because it is TURCK, you can expect the same fast, flexible support. Even with custom configurations, YOUR
be made within several days. Best of all, minimum quantity for YOUR
Part numbers are developed through your TURCK representative or application support.
In general, the formula below illustrates how to configure a custom, connectorized TURCK sensor.
Vibration ........................................55Hz,1mmAmplitude in all 3 Planes
Repeatability .....................................≤2% of Rated Operating Distance
Temperature Drift ..................................<±20% of Rated Operating Distance
Specifications
TURCK Inc. Minneapolis, MN 55441B1008 M30
TURCK
Innovative Solutions for Automation
4-Wire DC Analog - (LIU)
Ripple ..................≤10%
No-Load Current ...........≤8.0 mA
Voltage Output ............0-10 V/R
Current Output ............0-20 mA/R
Linearity Tolerance ..........±3% of full scale
Temperature Tolerance .......±0.06% / °C
Reverse Polarity Protection.....Incorporated
≥4.7 kΩ
L
≤500 Ω
L
3-Wire DC Analog - (LI2)
Ripple ..................≤10%
No-Load Current ...........≤8.0 mA
Current Output ............4-20 mA/R
Linearity Tolerance ..........±3% of full scale
Temperature Drift ..........±0.06% / °C
Reverse Polarity Protection.....Incorporated
LI = indicates current output only.
2 = Indicates a variance to standard which is 0-20 mA.
≤500 Ω
L
3-Wire DC Analog - (LF10)
Ripple ..................≤10%
No-Load Current ...........≤8.0 mA
Frequency Output ..........1-10 kHz
Linearity Tolerance ..........±5% of full scale
Temperature Tolerance .......±0.06% / °C
Reverse Polarity Protection.....Incorporated
Wire-Break Protection ........Incorporated
Wire-Break Protection ........Incorporated
Transient Protection .........PerEN60947-5-2
Shock ..................30g,11ms
Vibration ................55Hz,1mmAmplitude,
......................in all 3 planes
Repeatability ..............≤1%
......................
Wire-Break Protection ........Incorporated
Transient Protection .........PerEN60947-5-2
Shock ..................30g,11ms
Vibration ................55Hz,1mmAmplitude,
......................in all 3 planes
Repeatability ..............≤1%
......................
Transient Protection .........PerEN60947-5-2
Shock ..................30g,11ms
Vibration ................55Hz,1mmAmplitude,
......................in all 3 planes
Repeatability ..............≤1%
......................
(0.5% after 30 min. warm up)
(0.5% after 30 min. warm up)
(0.5% after 30 min. warm up)
LF = Linear frequency (1-10 kHz) output.
4-Wire DC Analog - (LUAP6X)
Ripple ..................≤10%
No-Load Current ...........≤8.0 mA
Voltage Output ............0-10 V/R
Linearity Tolerance ..........±5% of full scale
Temperature Tolerance .......±0.06% / °C
Reverse Polarity Protection.....Incorporated
Wire-Break Protection ........Incorporated
Transient Protection .........PerEN60947-5-2
Shock ..................30g,11ms
Off-State (Leakage) Current ....<100 mA
M31 B1008TURCK Inc. Minneapolis, MN 55441
≥4.7 kΩ
L
Voltage Drop Across Conducting Sensor..........≤1.8 V
Trigger Current for
Overload Protection .........≥220 mA on
......................200 mA load current
No-Load Current ...........<10mA
Vibration ................55Hz,1mmAmplitude,
......................in all 3 planes
Repeatability ..............≤1%
......................
(0.5% after 30 min. warm up)
Industrial
Automation
3-Wire DC Analog - (LU)
4-Wire DC Analog - (LIU5)
Ripple ...................≤10%
No-Load Current ............≤8.0 mA
Voltage Output .............0-10 V/R
Current Output .............4-20 mA/R
Linearity Tolerance ..........±3% of full scale
Temperature Drift ...........±0.06% / °C
Reverse Polarity Protection .....Incorporated
Wire-Break Protection ........Incorporated
Transient Protection..........PerEN60947-5-2
Shock ...................30g,11ms
Vibration .................55Hz,1mmAmplitude,
.......................in all 3 planes
LIU = Linear voltage or current output.
5 = Indicates 4-20 mA and 0-10 V output.
Variations:
No Load Current
WIM 40-Q20L60 ............≤23.0 mA
WIM 70-Q20L100............≤23.0 mA
WIM 40-NTL/STL ............≤23.0 mA
Linearity Tolerance
WIM 40-Q20L60 ............≤2%
WIM 70-Q20L100............≤8%
WIM 40-NTL/STL ............≤2%
≥4.7 kΩ
L
≤500 Ω
L
Repeatability ..............≤1%
.......................
LIU = Linear voltage or current output.
5 = Indicates 4-20 mA and 0-10 V output.
Variations:
No Load Current
WIM 40-Q20L60 ............≤23.0 mA
WIM 70-Q20L100............≤23.0 mA
WIM 40-NTL/STL ............≤23.0 mA
Linearity Tolerance
WIM 40-Q20L60 ............≤2%
Relative Temp. Drift
WIM 40-Q20L60 ............≤±0.06% °C
WIM 70-Q20L100............≤±0.06% °C
WIM 40-NTL/STL ............≤±0.06% °C
(0.5% after 30 min. warm up)
Linearity Tolerance ..........≤5% of final value
Nominal Voltage ............8.2VDC(EN50227)
Current Output .............4-20 mA
Power-On Effect ............Realized in Amplifier
Reverse Polarity Protection .....Incorporated
Wire-Break Protection ........Realized in Amplifier
Transient Protection..........Realized in Amplifier
TURCK Inc. Minneapolis, MN 55441B1008 M32
2-Wire DC Analog NAMUR - (LI-EXI)
Temperature Drift ...........≤±0.06% per °C
Shock ...................30g,11ms
Vibration .................55Hz,1mmAmplitude,
.......................in all 3 Planes
Repeatability ..............≤1%
.......................
(0.5% after 30 min. warm up)
Specifications
TURCK
Innovative Solutions for Automation
Third Party Compliances
CSA - Canadian Standards Association
CSA certifies devices for use in Canadian and American hazardous and non-hazardous locations.
FM - Approvals
FM approves devices for use in explosive hazardous locations in the US. Intrinsically safe (IS)
devices are approved for Division 1 areas; nonincendive (NI) devices are approved for
Division 2 areas.
UL - Underwriter’s Laboratories
UL is a nationally recognized US test laboratory that tests equipment to meet US standards and
jurisdictional requirements. UL lists stand-alone devices, such as sensors, and recognizes system
components, such as relays.
Note: TURCK products comply with many International standards. Consult factory for more information.
Hazardous Location Approvals
The NAMUR sensors shown in this catalog are Intrinsically Safe per the following:
EUROPE:CENELEC Standards EN 50 014 and EN 50 020; EC Directive 94/9/EC (ATEX)
USA, CANADA: Class I, II, IIIDivision 1Groups A, B, C, D, E, F, G*
Any FM approved or CSA certified associated apparatus with the following Entity Concept parameters can be used with
these sensors:
V
or VT≤15 VCa≥C
OC
or IT≤60 mALa≥L
I
SC
* Note: CSA does not allow the use of quick disconnects in Groups E and F
Many 3-wire DC sensors are Nonincendive for Class I, Division 2 hazardous areas. Only those 3-wire sensors identified with
the FM logo have this approval.
USA: Class IDivision 2Groups A, B, C, D
-AN6X, -AP6X
-RN6X, -RP6X
Factory P/N's ending in /S1751
Integrated cables and cordsets must have ITC-ER Rating.
cable
cable
+ 220 nF
+ 280 μH
Nonincendive
M33 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
More on Hazardous Locations
Standards for Intrinsically Safe systems in hazardous locations are found in the following publications:
United States:National Electrical Code 1996 (ANSI/NFPA 70) Articles 504 and 505
Factory Mutual Approval Standard Class No. 3610
Underwriters Laboratory Standard UL 913
Canada:Canadian Electrical Code C22.1-94 Section 18 and Appendix F.
Europe:CENELEC Standards EN 50 020 and EN 50 014
Hazardous Location Definitions (U.S. and Canada)
Class ILocations in which flammable gases or vapors exist or may be present in the air in quantities sufficient to
produce explosive or ignitable mixtures.
Class IILocations that are hazardous because of the presence of combustible dust.
Class IIILocations that are hazardous because of the presence of easily ignitable fibers or flyings, but in which
such fibers or flyings are not likely to be suspended in the air in quantities sufficient to produce
ignitable mixtures.
Division 1Locations in which hazardous concentrations in the air exist continuously, intermittently, or periodically
under normal operating conditions.
Division 2Locations in which hazardous materials are handled, processed or used, but in which they are normally
confined within closed containers or closed systems from which they can escape only in case of accidental
rupture or breakdown.
Group AAtmospheres containing acetylene.
Group BAtmospheres containing hydrogen, fuel and combustible process gases containing more than 30%
hydrogen by volume, or gases or vapors of equivalent hazard such as butadiene, ethylene oxide, propylene
oxide and acrolein.
Group CAtmospheres such as ethyl ether, ethylene, acetaldehyde, cyclopropane, or gases or vapors of
equivalent hazard.
Group DAtmospheres such as acetone, alcohol, ammonia, benzene, butane, cyclopropane, ethylene dichloride,
gasoline, hexane, lacquer solvent vapors, methane, natural gas, naphtha, propane, xylene, or gases or
vapors of equivalent hazard.
Group EAtmospheres containing combustible metal dusts, including aluminum, magnesium, and their commercial
alloys, and other combustible dusts with similarly hazardous characteristics.
Group FAtmospheres containing combustible carbonaceous dusts, including carbon black, charcoal and coal.
Group GAtmospheres containing other combustible dusts, such as chemical, agricultural or plastic dusts.
Exerpt from National Electrical Code:
Intrinsically safe apparatus and wiring shall be permitted in any hazardous (classified) location for which it is approved, and the
provisions of Articles 501 through 503 and 510 through 516 shall not be considered applicable to such installations except as
required by Article 504.
Wiring of intrinsically safe circuits shall be physically separated from wiring of all other circuits that are not intrinsically safe. Means
shall be provided to minimize the passage of gases and vapors. Installation of intrinsically safe apparatus and wiring shall be in
accordance with the requirements of Article 504.
TURCK Inc. Minneapolis, MN 55441B1008 M34
Specifications
TURCK
Innovative Solutions for Automation
Enclosure Ratings
NEMA 250-1991
NEMA 1Enclosures are intended for indoor use primarily to provide a degree of protection against limited amounts of
falling dirt.
NEMA 3Enclosures are intended for outdoor use primarily to provide a degree of protection against rain, sleet,
windblown dust, and damage from external ice formation.
NEMA 4Enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against
windblown dust and rain, splashing water, hose-directed water, and damage from external ice formation.
NEMA 4XEnclosures are intended for indoor or outdoor use primarily to provide a degree of protection against
corrosion, windblown dust and rain, splashing water, hose-directed water and damage from external ice
formation.
NEMA 6Enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against
hose-directed water, the entry of water during occasional temporary submersion at a limited depth, and
damage from external ice formation.
IEC 529
IP 40Protection against solid bodies larger than 1 mm. No protection against liquids.
IP 65Dust tight. Protection against water spray from all directions at 14.2 PSI through a 12.5 mm nozzle.
IP 67Dust tight. Protection against the effects of immersion in water for 30 minutes at 1 meter.
IP 68Dust tight. Protection against the effects of indefinite immersion in water at a pressure specified by the
manufacturer. Ex. TURCK's IP 68 definitions is IP 67 plus.
•
24 hours at 70°C
•
24 hours at -25°C
•
7 days at 1 meter under water at a constant temperature
•
10 cycles +70°C and -25°C, minimum of 1 hour at each temperature
IP 69K
Hot steam jet cleaning per EN 60529 (IP enclosure ratings) and DIN 40050-9.
TURCK TIP
For oily environments - Use plastic sensors with quick disconnects and TURCK PUR “/S90" cordsets.
For washdown environments - Use TURCK's WashdownSensors and appropriate mating cordsets.
High temperature resistance and good mechanical strength
Heat and chemical resistant, withstands short-term temperatures to 482° F
(similar to PTFE), high mechanical strength
For use at high or low ambient temperatures (-50...+180 °C), moderate mechanical strength,
average resistance against alkalis, acids, oils, and solvents
Metals
AG
SS - 306 Stainless SteelExcellent atmospheric resistance
CPBChrome Plated Brass
CuZn - BrassGenerally good resistance to industrial atmospheres
GD - AlSi12 - Aluminum, die-castLow specific weight, long-life characteristics
SF - Stoneface®High abrasion resistance, excellent for MIG welding applications, high heat and
TS - Tool SteelExcellent durability
armorguard ®
weldguard ®
weld flow immunity
TURCK Inc. Minneapolis, MN 55441B1008 M36
Specifications
TURCK
Innovative Solutions for Automation
Matrix of TURCK Sensor Materials *
Housing StyleABSPA,
CA25, CA40
CK40
CP40
CP80, K90SR
DS20
EG
EM
G, M (potted-in cable)
G, M (connector)
G..SK
G47SR
INR, INT
K..SK, P..SK
K40SR, P30SR
KT34
M..T
PCS
P, S (potted-in cable)
P, S (connector)
P.../S139
PT30
QF5.5
Q06
Q6.5 (World Clamp)
Q6.5
Q5.5, Q9.5, ISI
Q08, Q8SE
Q10
Q10S
Q11S, Q12
Q14, Q20
Q14, Q20 Ring
Q18, Q25, Q30
Q26
Q34, Q80
S185
Cable GlandX
Wet Suit
Trog. T
XXX
XX
PAPBT POM
X**X
XXX
XXX
XX
PP
PURPVCPVDF PEI306SSAlBrassZinc Thermoset
XX XX
XXX
XX
XXXX
XX
XXXX
XX
XXX
X
XXX
XXXX
XXX
X
XXX
X
X
XX
XXX
XX
XXX
XXXX
X
XXX
XX
XXXX
XXXX
XXX
XXX
XX
XXX
XXX
Plastic
M37 B1008TURCK Inc. Minneapolis, MN 55441
Industrial
Automation
Matrix of TURCK Sensor Materials *
Housing Style ABSPA,
Trog. T
A23
AKT
CRS
FST, NST, QST
IKE, IKM, IKT
KST
PSM
PST
PAPBTPOMPURPVCPVDFPEI306 SSAlBrassZincThermoset
XXXXX
XXXXX
XXX
XXXX
XXXXX
XXXXX
XXXXX
XXXX
The information in this chart is derived from reputable industry sources and is to be used only as
a guide in selecting materials suitable for your application. TURCK does not warrant in any
fashion that the information in this chart is accurate or complete, or that any material is suitable
for any purpose.
Most ratings listed here apply to a 48-hour exposure period.
Ratings: A - No effect
B - Minor effect
C - Moderate effect
D - Severe effect
ϕ - No specific data, but probable rating.