Slim Proximity Sensor
TL-T
Slim Model of Width 12 mm.
Ideal for side-by-side mounting.
Be sure to read Safety Precautions on page 5.
Ordering Information
Note: Models with a different frequency are available. The model numbers are TL-T@@@5. (e.g., TL-T2E15).
Appearance Sensing distance Output specifications
Model
Output configuration
NO NC
DC 3-wire models NPN TL-T2E1 TL-T2E2
PNP TL-T2F1 ---
AC 2-wire models TL-T2Y1 TL-T2Y2
DC 3-wire models NPN TL-T5ME1 TL-T5ME2
AC 2-wire models TL-T5MY1 TL-T5MY2
Shielded 2 mm
Unshielded 5 mm
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TL-T
Ratings and Specifications
Model
Item
TL-T2E1
TL-T2E2
TL-T2F1
TL-T2Y1
TL-T2Y2
TL-T5ME1
TL-T5ME2
TL-T5MY1
TL-T5MY2
Sensing distance 2 mm±10% 5 mm±10%
Setting distance 0 to 1.6 mm 0 to 4 mm
Differential travel 10% max. of sensing distance
Sensing object Ferrous metal (The sensing distance decreases with non-ferrous metal. Refer to Engineering Data on
page 3.)
Standard sensing object Iron 12 × 12 × 1 mm Iron 15 × 15 × 1 mm
Response frequency E and F models: 800 Hz,
Y models: 20 Hz
E models: 250 Hz,
Y models: 20 Hz
Supply voltage
(operating voltage range)
E and F models: 12 to 24 VDC (10 to 30 VDC), ripple (p-p): 20% max.
Y models: 100 to 220 VAC (90 to 250 VAC) 50/60 Hz
Current consumption E and F models: 15 mA max. at 24 VDC
Leakage current Y models: 2.5 mA max. at 200 VAC
Control
output
Switching
capacity
E and F models: 100 mA max. at 12 VDC, 200 mA max. at 24 VDC
Y models: 10 to 200 mA
Residual
voltage
E and F models: 1.0 V max. with a load current of 100 mA and cord length of 2 m
Y models: Refer to Residual Voltage (Typical) on page 3.
Indicators Detection indicator (red)
Operation mode
(with sensing object ap-
proaching)
E1 models: NO
E2 models: NC
F1 models: NO
Y1 models: NO
Y2 models: NC
Circuit protection E models: Reverse connection protection and surge absorber
Y models: Surge absorber
Ambient temperature Operating/Storage: 25°C to 70°C (with no icing or condensation)
Ambient humidity Operating/Storage: 35% to 95% (with no condensation)
Temperature influence ±10% max. of sensing distance at 23% in the temperature range of 25 to 70°C
Voltage influence E and F models: ±2.5% max. of sensing distance within a range of ±15% of the rated power supply voltage
Y models: ±2.5% max. of sensing distance within a range of ±10% of the rated power supply voltage
Insulation resistance 50 MΩ min. (at 500 VDC) between case and current-carrying parts
Dielectric strength E and F models: 1,000 VAC, 50/60 Hz for 1 min between case and current-carrying parts
Y models: 2,000 VAC, 50/60 Hz for 1 min between case and current-carrying parts
Vibration resistance
(destruction) 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance
(destruction) 500 m/s2 for 10 times each in X, Y, and Z directions
Degree of protection IEC IP67, in-house standard for oil-resistance
Connection method Pre-wired Models (Standard cable length: 2 m)
Weight (packed state) Approx. 70 g
Material Case Heat-resistant ABS resin
Sensing surface
Accessories Instruction sheet
Refer to I/O Circuit Diagrams Timing Chart on page 4.
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TL-T
Engineering Data
Operating Range Sensing Object Size and Material Influence
TL-T2@/T5@TL-T2 TL-T5M
Residual Voltage (Typical) Leakage Current (Typical)
TL-T@(M)Y@ at 100 VAC TL-T@(M)Y@at 200 VAC TL-T@Y
(Typical)
TL-T5M
TL-T2
86420 2
6
5
4
3
2
1
0468
Y
X
Distance X (mm)
Distance
Y (mm)
Sensing Head
0 5 10 15 20 25
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
@d
t = 1
mm
X
Stainless steel (SUS304)
Iron
Brass
Side length of sensing object: d (mm)
Aluminum
Distance X (mm)
Side length of sensing object: d (mm)
Distance X (mm)
0102030403525155
6
5
4
3
2
1
Aluminum
@d
t = 1
mm
X
Iron
Stainless steel (SUS304)
Brass
ON
OFF
0 10 1505 20050 100
100
50 100 VAC
A
V
Load voltage VL (V)
Residual load
voltage
Load current (mA)
Residual output voltage
ON
OFF
0 10 1505 20050 100
200
50
200 VAC
A
V
Residual
load voltage
Load voltage VL (V)
Load current (mA)
Residual output voltage 6
5
4
3
2
1
090 150 200 250100
R
A
Leakage current (mA)
Supply voltage (V)
AC
power
supply
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TL-T
I/O Circuit Diagrams
DC 3-wire Models
AC 2-wire Models
Operation
mode
Output
specifications Models Timing charts Output circuits
NO
NPN
TL-T2E1
TL-T5ME1
NC TL-T2E2
TL-T5ME2
NO PNP TL-T2F1
Operation mode Models Timing charts Output circuits
NO TL-T2Y1
TL-T5MY1
NC TL-T2Y2
TL-T5MY2
Present
Not present
Load
(between brown
and black)
Operate
Reset
Output voltage
(between black
and blue)
H
L
ON
OFF
Sensing object
Detection
indicator (red)
Load
+V
Tr
*2
*1
2.2 Ω
4.7 kΩ
0 V
Proxim-
ity
Sensor
main
circuit
Brown
Black
Out-
put
Blue
*1. 200 mA (load current)
*2. When a transistor is connected
Present
Not present
Load
(between brown
and black)
Operate
Reset
Output voltage
(between black
and blue)
H
L
ON
OFF
Sensing object
Detection
indicator (red)
Present
Not present
Load
(between brown
and black)
Operate
Reset
Output voltage
(between black
and blue)
H
L
ON
OFF
Sensing object
Detection
indicator (red)
+V
Tr
*2
*1
0 V
2.2 Ω
4.7 kΩ
Proxim-
ity
Sensor
main
circuit
Brown
Black
Out-
put
Blue
Load
*1. 200 mA (load current)
*2. When a transistor is connected
Load Operate
Reset
ON
OFF
Present
Not present
Sensing object
Detection indicator
(red)
Load
Blue
Brown
Proxi-
mity
Sensor
main
circuit
Load Operate
Reset
ON
OFF
Present
Not present
Sensing object
Detection indicator
(red)
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TL-T
Safety Precautions
This product is not designed or rated for
ensuring safety of persons.
Do not use it for such purposes.
Do not short the load. Explosion or burning may
result.
Do not supply power to the Sensor with no load
connected, otherwise internal parts may be
damaged or burnt.
Applicable Models: AC 2-wire Models
Do not use this product under ambient conditions that exceed
the ratings.
Design
Effect of Surrounding Metals
Be sure to separate the Sensor from surrounding metal
objects as shown in the following illustration.
The TL-T2 will not be influenced by metal when it is
embedded in metal.
Mutual Interference
When two or more Sensors are mounted face-to-face or side-
by-side, separate them as shown below. The table below
indicates the minimum distances A and B.
Mutual Interference (Unit: mm)
Note: Figures in parentheses will apply if the Sensors in use are different from
each other in response frequency.
Mounting
At the time of rear mounting, be sure that the tightening
torque does not exceed 0.59 N·m.
At the time of side mounting, be sure that the tightening
torque does not exceed 0.78 N·m.
(Unit: mm)
Dimensions Unless otherwise specified, the tolerance class IT16 is used for dimensions in this data sheet.
WARNING
Precautions for Correct Use
12 mm
15 mm
15 mm 15 mm
25 mm
15 mm
15 mm
Distance
Model A B
TL-T2 40 (10) 12 (0)
TL-T5 120 (60) 80 (40)
AB
Mounting screw
0.59 N·m
Mounting screw
0.78 N·m
6
4
4
12
17±0.2
32±0.2 16±0.2
5
9
40
26
*1
Indicator *2
Sensing surface
Two, M3, depth 6
Two, 3.1-dia. holes *1. DC-switching model: 4.0-dia.
vinyl-insulated round cable
with 3 conductors (Conductor
cross section: 0.2 mm2,
Insulator diameter: 1.2 mm),
Standard length: 2 m
AC-switching model: 4.0-dia.
vinyl-insulated round cable
with 2 conductors (Conductor
cross section: 0.3 mm2,
Insulator diameter: 1.3 mm),
Standard length: 2 m
*2. Detection indicator (red)
TL-T@
In the interest of product improvement, specifications are subject to change without notice.
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Proximity Sensors Technical Guide
General Precautions
These products cannot be used in safety devices for
presses or other safety devices used to protect human
life.
These products are designed for use in applications
for sensing workpieces and workers that do not affect
safety.
To ensure safety, always observe the following precautions.
Wiring Considerations
Operating Environment
Do not use the Sensor in an environment where there are explosive or combustible gases.
For precautions on individual products, refer to the Safety Precautions
in individual product information.
WARNING
Precautions for Safe Use
Item Typical examples
Power Supply Voltage
Do not use a voltage that exceeds the operat-
ing voltage range. Applying a voltage that is
higher than the operating voltage range, or us-
ing an AC power supply (100 VAC or higher)
for a Sensor that requires a DC power supply
may cause explosion or burning.
DC 3-Wire NPN Output Sensors DC 2-Wire Sensors
Load short-circuiting
Do not short-circuit the load. Explosion or
burning may result.
The load short-circuit protection function op-
erates when the power supply is connected
with the correct polarity and the power is
within the rated voltage range.
DC 3-Wire NPN Output Sensors DC 2-Wire Sensors
Even with the load short-circuit protection
function, protection will not be provided when
a load short circuit occurs if the power supply
polarity is not correct.
Incorrect Wiring
Be sure that the power supply polarity and oth-
er wiring is correct. Incorrect wiring may cause
explosion or burning.
DC 3-Wire NPN Output Sensors
Connection without a Load
If the power supply is connected directly with-
out a load, the internal elements may explode
or burn. Be sure to insert a load when connect-
ing the power supply.
DC 2-Wire Sensors
Even with the load short-circuit protection
function, protection will not be provided if
both the power supply polarity is incorrect
and no load is connected.
AC 2-Wire Sensors
Load
Sensor
Brown
Blue
Black
Load
Sensor
Brown
Blue
+
(Load short
circuit)
Load
Sensor
Brown
Blue
Black
(Load short circuit)
Load
Sensor
Brown
Blue
+
+
+
Load
Load
Sensor
Brown
Black
Blue
Sensor
Brown
Blue
Black
+
Sensor
Brown
Blue
Sensor
Brown
Blue
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Proximity Sensors Technical Guide
The following conditions must be considered to understand the conditions of the application and location as well as the relation to control
equipment.
Model Selection
* mT (millitesla) is a unit for expressing magnetic flux density. One tesla is the equivalent of 10,000 gauss.
Precautions for Correct Use
Item Points of consideration
Sensing
object and
operating
condition of
Proximity
Sensor
Electrical
conditions
Environ-
mental
conditions
Mounting
conditions
Influence of
external
electromag-
netic fields
The influence within a DC magnetic field is 20 mT* max. Do not use the Sensor at a level higher than 20 mT.
Sudden changes in the DC magnetic field may cause malfunction. Do not use the Sensor for applications that involve turning a
DC electromagnet ON and OFF.
Do not place a transceiver near the Sensor or its wiring. Doing so may cause malfunction.
Other con-
siderations Cost feasibility: Price/delivery time Life: Power-ON time/frequency of use
Check the relation between the sensing object
and the Proximity Sensor.
Sensing object
Proximity Sensor
Sensing
distance
Surrounding
metals
S
pecific condi-
tions of object
Direction of ob-
ject movement
Peripheral metal
S
ensing distance
Material, size,
shape, existence
of plating, etc.
Transit interval,
speed, existence
of vibration, etc.
Material, distance
to Sensor, orien-
tation, etc.
Fluctuation in
transit point, al-
lowable error, etc.
Sensing (set) distance, shape of Sensor (rectangular, cylindrical, through-
beam, grooved), influence of peripheral metal (Shielded Sensors, Non-
shielded Sensors), response speed (response frequency), influence of
temperature, influence of voltage, etc.
Verify the electrical conditions of the control system
to be used and the electrical performance of the
Proximity Sensor.
Load
Output
Proximity
Sensor
Power
supply
Switching element
DC (voltage fluctuation, current capac-
ity value)
AC (voltage fluctuation, frequency,
etc.)
Need for S3D2 Controller
Power
supply
Selecting the power
supply type
DC
DC + S3D2 Controller
AC
{
Resistive load - Non-contact control
system
Inductive load - Relay, solenoid, etc.
Steady-state current, inrush current
Operating, reset voltage (current)
Lamp load
Steady-state current, inrush current
Open/close frequency
Load
Selecting the power
supply type
DC
DC + S3D2 Controller
AC
Control output
Maximum current
(voltage)
Leakage current
Residual load voltage
{
The environmental tolerance of the Proximity Sensor
is better than that of other types of Sensors. However,
investigate carefully before using a Proximity Sensor
under harsh temperatures or in special atmospheres.
Water Resistance
Do not use the Sensor in water, rain, or outdoors.
Ambient Conditions
To maintain reliability of operation, do not use the
Sensor outside the specified temperature range or
outdoors. Even though the Proximity Sensor has a
water-resistant structure, it must be covered to pre-
vent direct contact with water or water-soluble cut-
ting oil. Do not use the Sensor in atmospheres with
chemical vapors, in particular, strong alkalis or ac-
ids (nitric acid, chromic acid, or hot concentrated
sulfuric acid).
Explosive Atmospheres
Do not use the Sensor in atmospheres where
there is a danger of explosion. Use an Explosion-
proof Sensor.
Temperature
and humidity
Highest or lowest
values, existence
of direct sunlight,
etc.
Temperature influence,
high-temperature use,
low temperature use,
need for shade, etc.
Atmosphere Water, oil, iron
powder, or other
special chemicals
Need for water resis-
tance or oil resistance,
need for explosion-
proof structure
Vibration and
shock
Size, duration Need for strength,
mounting method
When deciding the mounting method, take into consideration not
only restrictions due to mechanical devices, but also ease of main-
tenance and inspection, and interference between Sensors.
Wiring method,
existence of in-
ductance surges
Connection
Wires
Wire type, length, oil-resistant
cable, shielded cable, robot
cable, etc.
Conduits, ducts, pre-wired,
terminal wiring, ease of main-
tenance and inspection
Mounting procedure
Installation location
Existence of mounting
brackets, direct mounting,
secured with bolts or screws
Ease of maintenance and
inspection, mounting space
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Proximity Sensors Technical Guide
Design
Sensing Object Material
The sensing distance varies greatly depending on the material of the
sensing object. Study the engineering data for the influence of
sensing object material and size and select a distance with sufficient
leeway.
In general, if the
sensing object is a non-
magnetic metal (for
example, aluminum),
the sensing distance
decreases.
Size of Sensing Object
In general, if the object is smaller
than the standard sensing
object, the sensing distance
decreases.
Design the setup for an object
size that is the same or greater
than the standard sensing
object size from the graphs
showing the sensing object
size and sensing distance.
When the size of the standard
sensing object is the same or
less than the size of the
standard sensing object,
select a sensing distance with
sufficient leeway.
Thickness of Sensing Object
The thickness of ferrous metals
(iron, nickel, etc.) must be 1 mm
or greater.
For non-magnetic metal, a
sensing distance equivalent to a
magnetic body can be obtained
when the coating thickness is
0.01 mm or less. With pulse-
response models (e.g., E2V),
however, the characteristics may
vary. Be sure to check the
catalog information for the
relevant model.
When the coating is extremely
thin and is not conductive, such
as a vacuum deposited film,
detection is not possible.
Influence of Plating If the sensing object is plated, the sensing
distance will change (see the table below).
Effect of Plating (Typical)
(Reference values: Percent of non-plated sensing distance)
Mutual Interference
Mutual interference refers to a state where a Sensor is affected by
magnetism (or static capacitance) from an adjacent Sensor and the
output is unstable.
One means of avoiding interference when mounting Proximity
Sensors close together is to alternate Sensors with different
frequencies. The model tables indicate whether different
frequencies are available. Please refer to the tables.
When Proximity Sensors with the same frequency are mounted
together in a line or face-to-face, they must be separated by a
minimum distance. For details, refer to Mutual Interference in the
Safety Precautions for individual Sensors.
Power Reset Time
A Sensor is ready for detection within 100 ms after turning ON the
power. If the load and Sensor are connected to separate power
supplies, design the system so that the Sensor power turns ON first.
Aluminum Copper
Brass
Stainless steel
Steel
(SPCC)
0
5
10 15 20 25 30 35 40 45 50 55
Side length (one side) of sensing object: d (mm)
14
12
10
8
6
4
2
X
d
t=1mm
Sensing distance X (mm)
Example: E2-X10D@
Stability
Side length (one side)
of sensing object: d (mm)
Sensing distance X (mm)
Standard
sensing
object
Sensing
distance
becomes
short
Thickness and base material of
plating Steel Brass
No plating 100 100
Zn 5 to 15 μm90 to 120 95 to 105
Cd 5 to 15 μm100 to 110 95 to 105
Ag 5 to 15 μm60 to 90 85 to 100
Cu 10 to 20 μm70 to 95 95 to 105
Cu 5 to 15 μm-95 to 105
Cu (5 to 10 μm) + Ni (10 to 20 μm) 70 to 95 -
Cu (5 to 10 μm) + Ni (10 μm)
+ Cr (0.3 μm) 75 to 95 -
Aluminum
Steel
0 0.01 0.1 1 10
Thickness of sensing object: t (mm)
10
8
6
4
2
Sensing distance X (mm)
Reset
Operate
Sensing object shape: Square
d=30mm
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Proximity Sensors Technical Guide
Turning OFF the Power
An output pulse may be generated when the power is turned OFF, so
design the system so that the load or load line power turns OFF first.
Influence of Surrounding Metal
The existence of a metal object other than the sensing object near the
sensing surface of the Proximity Sensor will affect detection perfor-
mance, increase the apparent operating distance, degrade tempera-
ture characteristics, and cause reset failures. For details, refer to the
influence of surrounding metal table in Safety Precautions for individ-
ual Sensors.
The values in the table are for the nuts provided with the Sensors.
Changing the nut material will change the influence of the surrounding
metal.
Power Transformers
Be sure to use an insulated transformer for a DC power supply. Do
not use an auto-transformer (single-coil transformer).
Precautions for AC 2-Wire/DC 2-Wire Sensors
Surge Protection
Although the Proximity Sensor has a surge absorption circuit, if there
is a device (motor, welder, etc.) that causes large surges near the
Proximity Sensor, insert a surge absorber near the source of the
surges.
Influence of Leakage Current
Even when the Proximity Sensor is OFF, a small amount of current
runs through the circuit as leakage current.
For this reason, a small current may remain in the load (residual
voltage in the load) and cause load reset failures. Verify that this
voltage is lower than the load reset voltage (the leakage current is
less than the load reset current) before using the Sensor.
Using an Electronic Device as the Load for an AC 2-Wire
Sensor
When using an electronic device, such as a Timer, some types of
devices use AC half-wave rectification. When a Proximity Sensor is
connected to a device using AC half-wave rectification, only AC half-
wave power will be supplied to the Sensor. This will cause the Sensor
operation to be unstable. Also, do not use a Proximity Sensor to turn
the power supply ON and OFF for electronic devices that use DC half-
wave rectification. In such a case, use a relay to turn the power supply
ON and OFF, and check the system for operating stability after
connecting it.
Examples of Timers that Use AC Half-wave Rectification
Timers: H3Y, H3YN, H3RN, H3CA-8, RD2P, and H3CR (-A, -A8, -AP,
-F, -G)
Countermeasures for Leakage Current (Examples)
AC 2-Wire Sensors
Connect a bleeder resistor to bypass the leakage current flowing in
the load so that the current flowing through the load is less than the
load reset current.
Calculate the bleeder resistance and allowable power using the
following equation.
P : Watts of bleeder resistance (the actual number of watts
used should be several times this number)
I : Load current (mA)
It is recommend that leeway be included in the actual values used.
For 100 VAC, use 10 kΩ or less and 3 W (5 W) or higher, and for 200
VAC, use 20 kΩ or less and 10 W (20 W) or higher. If the effects of
heat generation are a problem, use the number of watts in
parentheses ( ) or higher.
DC 2-Wire Sensors
Connect a bleeder resistor to bypass the leakage current flowing in
the load, and design the load current so that (leakage current) × (load
input impedance) < reset voltage.
Calculate the bleeder resistance and allowable power using the
following equation.
P : Watts of bleeder resistance (the actual number of watts
used should be several times this number)
iR: Leakage current of Proximity Sensor (mA)
iOFF : Load reset current (mA)
It is recommend that leeway be included in the actual values used.
For 12 VDC, use 15 kΩ or less and 450 mW or higher, and for 24
VDC, use 30 kΩ or less and 0.1 W or higher.
R Vs (kΩ)P >
Vs2
(mW)
10 - I R
R Vs (kΩ) P > Vs2
(mW)
iR - iOFFR R
When using an AC 2-Wire Sensor, connect a bleeder
resistor so that the Proximity Sensor current is at least 10
mA, and the residual load voltage when the Proximity
Sensor is OFF is less than the load reset voltage.
Bleeder resistor R
Load
AC power supply
voltage Vs
Vs
Bleeder resistor R
Load
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Proximity Sensors Technical Guide
Loads with Large Inrush Current
Loads, such as lamps or motors, that cause a large inrush current* will
weaken or damage the switching element. In this situation, use a
relay.
*E2K, TL-N@Y: 1 A or higher
Mounting
Mounting the Sensor
When mounting a Sensor, do not tap it with a hammer or otherwise
subject it to excessive shock. This will weaken water resistance and
may damage the Sensor. If the Sensor is being secured with bolts,
observe the allowable tightening torque. Some models require the
use of toothed washers.
For details, refer to the mounting precautions in Precautions for
Correct Use in individual product information.
Mounting/Removing Using DIN Track
(Example for E2CY)
<Mounting>
(1)Insert the front of the Sensor into the special Mounting Bracket
(included) or DIN Track.
(2)Press the rear of the Sensor into the special Mounting Bracket or
DIN Track.
When mounting the side of the Sensor using the special Mounting
Bracket, first secure the Amplifier Unit to the special Mounting
Bracket, and then mount the special Mounting Bracket with M3
screws and flat washers with a diameter of 6 mm maximum.
<Removing>
While pressing the Amplifier Unit in the direction of (3), lift the fiber
plug in the direction of (4) for easy removal without a screwdriver.
Set Distance
The sensing distance may vary due to fluctuations in temperature and
voltage. When mounting the Sensor, it is recommend that installation
be based on the set distance.
Front
Rear
Mounting track (yellow)
DIN Track (or Mounting Bracket)
(1)
(2)
Flat washers (6 dia. max.)
(3)
(4)
DIN Track
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Proximity Sensors Technical Guide
Wiring Considerations
AND/OR Connections for Proximity Sensors
Note: When AND/OR connections are used with Proximity Sensors, the effects of erroneous pulses or leakage current may prevent use. Verify that there are no
problems before use.
Model Type of
connection Connection Description
DC 2-Wire
AND (series
connection)
Keep the number of connected Sensors (N) within the range of the following
equation.
VS - N × VR Operating load voltage
It is possible, however, that the indicators may not light correctly and error
pulses (of approximately 1 ms) may be generated because the rated power
supply voltage and current are not supplied to individual Proximity Sensors.
Verify that this is not a problem before operation.
OR (parallel
connection)
Keep the number of connected Sensors (N) within the range of the following
equation.
N × i Load reset current
Example: When an MY (24-VDC) Relay is used as the load, the maximum
number of Sensors that can be connected is 4.
AC 2-wire
AND (series
connection)
<TL-NY, TL-MY, E2K-@MY@, TL-T@Y>
The above Proximity Sensors cannot be used in a series connection. If need-
ed, connect through relays.
<E2E-X@Y>
For the above Proximity Sensors, the voltage VL that can be applied to the
load when ON is VL = VS - (Output residual voltage × Number of Sensors), for
both 100 VAC and 200 VAC.
The load will not operate unless VL is higher than the load operating voltage.
This must be verified before use.
When using two or more Sensors in series with an AND circuit, the limit is three
Sensors. (Be careful of the VS value in the diagram at left.)
OR (parallel
connection)
In general it is not possible to use two or more Proximity Sensors in parallel
with an OR circuit.
A parallel connection can be used if A and B will not be operated simulta-
neously and there is no need to hold the load. The leakage current, however,
will be n times the value for each Sensor and reset failures will frequently oc-
cur.
("n" is the number of Proximity Sensors.)
If A and B will be operated simultaneously and the load is held, a parallel con-
nection is not possible.
If A and B operate simultaneously and the load is held, the voltages of both A
and B will fall to about 10 V when A turns ON, and the load current will flow
through A causing random operation. When the sensing object approaches B,
the voltage of both terminals of B is too low at 10 V and the switching element
of B will not operate. When A turns OFF again, the voltages of both A and B
rise to the power supply voltage and B is finally able to turn ON.
During this period, there are times when A and B both turn OFF (approximately
10 ms) and the loads are momentarily restored. In cases where the load is to
be held in this way, use a relay as shown in the diagram at left.
Vs
-
-
+
+
Load
N : Number of Sensors that can be connected
VR: Residual output voltage of Proximity Sensor
VS: Power voltage
-
+
+
Vs
Load
N: Number of Sensors that can be connected
i: Leakage current of Proximity Sensor
X1
X1
X2
X2
VL
VS
VS
VS
V
S
100V
Load
Load
Load
Load
(A)
(A)
(B)
(B)
X1
X1
X2
X2
Load
AC power supply
voltage Vs
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Proximity Sensors Technical Guide
Note: When AND/OR connections are used with Proximity Sensors, the effects of erroneous pulses or leakage current may prevent use. Verify that there are no
problems before use.
Extending Cable Length
The cable of a Built-in Amplifier Sensor can be extended to a
maximum length of 200 m with each of the standard cables (excluding
some models).
For Separate Amplifier Sensors (E2C-EDA, E2C, E2J, E2CY), refer
to the specific precautions for individual products.
Bending the Cable
If you need to bend the cable, we recommend a bend radius that is at
least 3 times the outer diameter of the cable (with the exception of
coaxial and shielded cables).
Cable Tensile Strength
In general, do not subject the cable to a tension greater than that
indicated in the following table.
Note: Do not subject a shielded cable or coaxial cable to tension.
Separating High-voltage Lines
Using Metal Conduits
If a power line is to be located near the Proximity Sensor cable, use a
separate metal conduit to prevent malfunction or damage. (Same for
DC models.)
Example of Connection with S3D2 Sensor Controller
Using the S3D2 Sensor Controller
Connecting to a Relay Load
Note: DC 2-Wire Sensors have a residual voltage of 3 V. Check the operating
voltage of the relay before use.
The residual voltage of the E2E-XD-M1J-T is 5 V.
Model Type of
connection Connection Description
DC 3-wire
AND (series
connection)
Keep the number of connected Sensors (N) within the range of the following
equation.
iL + (N - 1) × i Upper limit of Proximity Sensor control output
VS - N × VR Operating load voltage
Note: When an AND circuit is connected, the operation of Proximity Sensor B
causes power to be supplied to Proximity Sensor A, and thus erroneous
pulses (approximately 1 ms) may be generated in A when the power is
turned ON. For this reason, take care when the load has a high
response speed because malfunction may result.
OR (parallel
connection)
For Sensors with a current output, a minimum of three OR connections is pos-
sible. Whether or not four or more connections is possible depends on the
model.
(B)
(A)
Vs
i
+
+
OUT
OUT
-
-
iL
i
Load
Example: A maximum of two
Sensors can be used when an
MY (24-VDC) Relay is used for
the load.
N : Number of Sensors that can be con-
nected
VR: Residual output voltage of Sensor
VS: Power supply voltage
i : Current consumption of Sensor
iL: Load current
-
OUT
OUT
-
+
+
Vs
Load
Cable diameter Tensile strength
Less than 4 mm 30 N max.
4 mm min. 50 N max.
DC 2-Wire Sensors
DC 3-Wire Sensors
5
2
4
1
6
3
11
8
10
7
12
9
Brown OUT
Blue 0 V
S3D2
Operation can be reversed with the signal input
switch on the S3D2.
Blue
Brown
24 VDC
X
5
2
4
1
6
3
11
8
10
7
12
9
Black OUT
Blue 0 V
Brown +12 V
S3D2
Operation can be reversed with the signal input
switch on the S3D2.
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Proximity Sensors Technical Guide
Operating Environment
Water Resistance
Do not use the Sensor in water, rain, or outdoors.
Ambient Conditions
Do not use the Sensor in the following environments.
Doing so may cause malfunction or failure of the Sensor.
1. To maintain operational reliability and service life, use the Sensor
only within the specified temperature range and do not use it
outdoors.
2. The Sensor has a water resistant structure, however, attaching a
cover to prevent direct contact with water will help improve
reliability and prolong product life.
3. Avoid using the Sensor where there are chemical vapors,
especially strong alkalis or acids (nitric acid, chromic acid, or hot
concentrated sulfuric acid).
Maintenance and inspection
Periodic Inspection
To ensure long-term stable operation of the Proximity Sensor, inspect
for the following on a regular basis. Conduct these inspections also
for control devices.
1. Shifting, loosening, or deformation of the sensing object and
Proximity Sensor mounting
2. Loosening, bad contact, or wire breakage in the wiring and
connections
3. Adherence or accumulation of metal powder
4. Abnormal operating temperature or ambient conditions
5. Abnormal indicator flashing (on setting indicator types)
Disassembly and Repair
Do not under any circumstances attempt to disassemble or repair the
product.
Quick Failure Check
You can conveniently check for failures by connecting the E39-VA
Handy Checker to check the operation of the Sensor.
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
2008.9
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2008 All Rights Reserved.
In the interest of product improvement, specifications are subject to change without notice.
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comments.
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