Subminiature Ultrasonic Sensor-10 mm Head E4C2
Subminiature Sensor With Remote
Sensing Head
Sensing range, 20 to 50 mm
Sensitivity adjustment for precise
sensing
DIN rail mounted amplifier
Remote 10 mm sensing head
Switch selectable NO/NC operation
Ordering Information
Supply
voltage Sensing type Sensing
distance Cable length Output configuration Part number
12 to 24 VDC Reflective
ultrasonic 20 to 50 mm 1.03 m (34)NPN E4C2-LM50C4
Specifications
RATINGS/CHARACTERISTICS
Part number E4C2-LM50C4
Sensing method Reflective ultrasonic
Supply voltage Operating voltage range: 12 VDC –10% to 24 VDC +15% with a max. ripple (p-p) 10%
Current consumption 35 mA max.
Sensing distance 20 to 50 mm (0.79 to 1.97 in), adjustable, at 20°C (68°F)
Standard sensing object 40 x 40 mm flat plate
Ultrasonic oscillation Approx. 395 kHz
Response time 50 ms (switching frequency 10 Hz)
Control output NPN open collector output (normally open or normally closed selectable with a slide switch):
100 mA at 30 VDC max.
Circuit protection Power reverse polarity, and short circuit protection
Indicators Output (orange LED)
Ambient operating temperature 0°C to 50°C (32°F to 122°F) with no icing
Storage temperature –25°C to 70°C (–13°F to 158°F) with no icing
Relative humidity 35 to 95%
Temperature influence ±10% max. of sensing distance at 20°C (68°F) in the temperature range of 0°C and 50°C
(32°F to 122°F)
Insulation resistance 50 MΩ min. at 500 VDC between current carrying parts and case
Dielectric strength 1,000 VAC (50/60 Hz) for 1 min between current carrying parts and case
(This table continues on the next page.)
E4C2
E4C2
2
Specifications Table – continued from previous page
Part number E4C2-LM50C4
Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z axes
Shock
it
Sensor 500 m/s2 once each in X, Y, and Z axes
resistance Amplifier 300 m/s2 once each in X, Y, and Z axes
Enclosure
ti
Sensor IEC IP54
rating Amplifier IEC IP50 with a protection cover attached
Approvals UL, cUL Recognized, File No. E41515 when used with Class 2 power supply
Weight Approx. 75 g
Amplifier mounting method DIN rail mounting and two 3.4 mm dia. through holes
Material Amplifier ABS resin
Cover Polycarbonate resin
Sensor Brass
Accessories included One set of M10 nuts, instruction sheet
Operation
OUTPUT CIRCUIT
(+) 12 to 24 VDC
100 mA max.
Load
Brown
Main
circuit (OUT)
Black
(–)
Blue GND
OPERATING MODE
Output ON when an Object is Present with Operation
Selector Set to NO
Yes
No
Operation indicator
(orange)
Output transistor ON
OFF
Load (e.g., relay) Operate
Release
Sensing object
present
ON
OFF
Output ON when an Object is Not Present with
Operation Selector Set to NC
Output transistor ON
OFF
Load (e.g., relay) Operate
Release
Yes
No
Operation indicator
(orange)
Sensing object
present
ON
OFF
E4C2 E4C2
3
En
g
ineerin
g
Data
SENSING RANGE (TYPICAL)
Distance Y (mm)
Distance X (cm)
Unstable sensing
range (with no op-
eration accuracy
guaranteed)
Sensing point
Dimensions
Unit: mm (inch)
E4C2-LM50C4
Two, 3.4-dia.
mounting holes. 3.9-dia. vinyl-insulated round
cable, 0.2 dia. x 3 conductor
Standard length: 2 m
M10 x 1
Two clamping nut
Toothed
washer
8.8 dia.
(0.35)
18
(0.71)
14
16.2
4
26
(1.02) 56
(2.20)
43 6
6
30
(1.18)
13.6 (0.54)
7
2,000
(6.56 ft)
1,030
(3.38 ft)
E4C2
E4C2
4
Nomenclature
OUTPUT: Output indicator (orange)
SENS: Sensitivity adjuster
Operation selector
SENSITIVITY ADJUSTMENTS
Make sure that the E4C2 is adjusted so that it has an appropriate
margin of sensing distance and that the E4C2 is not influenced at
all by the background object.
Sensitivity adjuster
Background object
Target object
SENSITIVITY ADJUSTMENT STEPS
FOR THREE APPLICATION TYPES
If the target moves laterally in front of the sensor head, and
the background is within the sensing distance:
Procedure:
1. With target present, adjust sensitivity to the minimum for
target detection.
2. Without target, adjust sensitivity to the minimum for back-
ground detection.
3. Reduce sensitivity to the midpoint between 1 and 2.
If the target moves laterally in front of the sensor head, and
no background is within sensing distance:
Procedure:
1. Set sensitivity to the maximum.
If the target approaches the sensing head directly, and
no background is within the sensing distance:
Procedure:
1. Move target to desired sensing position.
2. Adjust the sensitivity to detect the target.
E4C2 E4C2
Precautions
WIRING
Do not wire power lines or high-tension lines within the same
conduit with the E4C2 or the E4C2 may be damaged or
malfunction due to induction. Be sure the lines of the E4C2 are
laid separated from power lines or high-tension lines or laid in an
exclusive, shielded conduit.
SENSOR MOUNTING
Do not tighten the nut with excessive force.
Be sure to apply the provided toothed washer and tighten the nut
to a torque of 9 N m maximum.
SENSITIVITY ADJUSTER
Do not turn the sensitivity adjuster excessively. If the sensitivity
adjuster is turned exceeding the permissible range, the stopper
may break and sensitivity adjustment will not be possible.
POWER SUPPLY
If a switching regulator is employed, ground the FG and G
terminals.
Do not impose voltage exceeding the rated supply voltage or
connect an AC power supply.
TURNING POWER ON
It takes a maximum of 100 ms for the Sensor to be ready to
operate after the E4C2 is turned ON. If the load and E4C2 are
connected to independent power supplies respectively, be sure to
turn ON the E4C2 first.
SHORT-CIRCUIT PROTECTION
The E4C2 has a built-in circuit that protects against short-circuit
damage. If the circuit is triggered, the load will not operate
regardless of the incident status. If that happens, turn OFF the
E4C2, check the condition of the load, eliminate the cause of the
short-circuiting, and then turn ON the E4C2 again.
EFFECTS OF SURROUNDING OBJECTS
If there are surrounding objects near the Sensor, make sure to
keep the Sensor away from the surrounding objects for the
following distances or more.
40 mm
8 mm
MUTUAL INTERFERENCE
If more than one Unit is closely mounted together or used in a
narrow space, mutual interference of the Sensors will result.
If more than one E4C2 is mounted face to face or in parallel,
make sure that the distances between two Units adjacent to each
other are the same as or larger than the corresponding values
shown below.
300 mm 20 mm
Cat. No. CEDSAX3 10/99 Specifications subject to change without notice. Printed in U.S.A.
OMRON ELECTRONICS, INC.
One East Commerce Drive
Schaumburg, IL 60173
NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.
1-800-55-OMRON
OMRON CANADA, INC.
885 Milner Avenue
Scarborough, Ontario M1B 5V8
416-286-6465
