Omron E2C User manual

1
Inductive Proximity Sensor E2C
Variable Sensing Distance and
Differential Travel Allow a Wide Range
of Applications
Various Sensing Heads available in outer diame-
tersfrom2.0to40mm.
Operation and stability indicators (LED) in Amplifier
Unit allow easy monitoring of stable operation.
AmplifierUnithaswide-ranging operatingvoltages,
10 to 30 VDC or 90 to 264 VAC.
Small differences in size, distance, and materials
can be detected.
Ordering Information
AC 2-wire Models
Size Shield Sensing
d
i
t
Maxi- Sensor
H
d
Amplifier Unit
g
distance mum
operat-
ing dis-
tance
Head Multi-function Single-function Self-
diag-
nostic
function
AC DC
(PNP,
NPN)
DC
(NPN) DC (PNP,
NPN)
DC
(NPN) DC (PNP) DC (NPN)
2.0 dia. Un-
shielded
(see
note1)
0.5 mm 1.2 mm E2C-
CR5B E2C-
AK4A E2C- AM4A --- --- E2C-
GE4B E2C- GF4B ---
3.5 dia. Shielded 0.8 mm 1.8 mm E2C-
CR8A E2C-
JCA4 E2C- WH4AF
(
E2C-
GE4A E2C- GF4A E2C- JCA4P
(
3.8 dia. 1mm 2mm E2C-
CR8B
J
C
(see
note 2)
E
2
C
-
G
G
J
C
(see
note 3)
M5 E2C-
X1A
E
2
C
-
WH4A
5.4 dia. E2C-
C1A
M8 1.5 mm 3mm E2C-
X1R5A
M12 2mm 5mm E2C-
X2A --- --- ---
M18 5mm 10 mm E2C-
X5A
M30 10 mm 18 mm E2C-
X10A
40 dia. Un-
shielded 20 mm 50 mm E2C- C20MA
Note: 1. The E2C-CR5B cannot be flush-mounted in metal even though the E2C-CR5B is of a shielded construction.
2. Use the E2C-WH4AF in combination with the S3D8 Sensor Controller
3. The E2C-JCA4P is an Amplifier Unit with self-diagnostic output for DIN track mounting.

E2C E2C
2
Specifications
Sensor Heads
Model E2C-CR5B E2C-CR8A
E2C-CR5B E2C-X1A E2C-C1A E2C- X1R5A E2C-X2A E2C-X5A E2C-X10A E2C- C20MA
Sensing object Magnetic metals (Refer to Engineering Data for non-magnetic metals.)
Standard sensing
object Iron:5x5x
1mm Iron: 5 x 5 x1mm Iron: 5 x 5 x1mm Iron: 8 x 8 x1mm Iron: 12 x 12 x 1 mm Iron: 18 x 18 x 1 mm Iron: 30 x 30 x 1 mm Iron: 50 x 50 x 1 mm
Stable sensing range
(within rated
temperature range)
0to0.5mm 0to
0.8 mm 0to1mm 0to 1.5 mm 0to2mm 0to5mm 0to10mm 0to20mm
Safety sensing range
(0!Cto40
!C) 0to0.7mm 0to
1.2 mm 0to 1.5 mm 0to2mm 0to 2.5 mm 0to7mm 0to15mm 0to28mm
Maximum operating
distance (at 23!C) 1.2 mm 1.8 mm 2mm 3mm 5mm 10 mm 18 mm 50 mm
Response frequency
(see note 1) 1kHz 800 Hz 350 Hz 100 Hz 50 Hz
Ambient temperature Operating:
-- 10!Cto
55!C
Operating: --25!Cto70
!C (with no icing)
Ambient humidity Operating: 35% to 95%
Temperature
influence "25% max.
of the sens-
ing dis-
tance at
23!Cina
tempera-
ture range
of --10!C
and 55!C
"15% max. of the sensing distance at 23!C in a temperature range of --25!C and 70!C
Vibration resistance Malfunction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hrs each in X, Y, and Z directions
Shock resistance Malfunction: 500 m/s2(approx. 50G) for 3 times each in X, Y, and Z directions
Enclosure rating IEC IP64 IEC IP67
Cable length (see
note 2) 3-m
shielded
cable
3-m high-frequency coaxial cable (5 m
max.) 3-m high-frequency coaxial cable (10 m max.)
Weight (with 3-m
cable) Approx.
10 g Approx. 40 g Approx. 45 g Approx. 50 g Approx. 60 g Approx. 140 g Approx. 270 g Approx. 300 g
Material Case Stainless steel Brass
Sensing
surface ABS resin
Cable Polyethylene
Note: 1. ResponsefrequenciesareminimumvaluesapplicabletoDCsolid-statecontroloutput usedtomeasurestandardsensingobjects,
each separated from oneanotherwith adistance thatis doublethe sidedimension of thesensing object and located at a distance
that is half the maximum sensing distance.
2. ThecablelengthvarieswiththeAmplifierUnitandSensorHeadincombination.Refertothetableonthenextpage.Thecharacter-
istic impedance of the coaxial cable is 50 #.

E2C E2C
3
Cable Lengths vs. Amplifier Unit and Sensor Head Combinations
Amplifier
U
i
t
Sensor Head
p
Unit E2C-
CR5B E2C- CR8A E2C- CR8B E2C-X1A E2C-C1A E2C- X1R5A E2C-X2A E2C-X5A E2C- X10A E2C- C20MA
E2C-GE4B 3 m only --- --- --- --- --- --- --- --- ---
E2C-GF4B
y
--- --- --- --- --- --- --- --- ---
E2C-GE4A --- 3 m only --- --- --- ---
E2C-GF4A ---
y
--- --- --- ---
E2C-WH4A --- 3 m or 5 m only
S
e
t
t
h
e
p
i
n
s
o
f
t
h
e
c
a
b
l
e
l
e
n
g
t
h
s
e
l
e
c
t
o
r
p
r
o
p
e
r
l
y
(
s
e
e
--- --- --- ---
E2C-WH4AF ---
S
et t
h
ep
i
ns o
f
t
h
eca
b
l
e
l
engt
h
se
l
ector proper
l
y
(
see
note). --- --- --- ---
E2C-JC4AP --- 1 to 3 m: Short-circuit the cable length selector terminals.
3 to 5 m: Open the cable length selector terminals. --- --- ---
E2C-JC4A --- 3 m only --- --- ---
E2C-AM4A 3mor
5 m only
with all
pins of
t
h
e
c
a
b
l
e
0to5m
Set the pins of the cable length selector properly (see
note).
0to10m
Set the pins of the cable length selector
properly (see note).
E2C-AK4A
t
h
eca
b
l
e
length
selector
set to the
left.
Note: Refer to page 12 for cable length selection.
Amplifier Units
Model E2C-AK4A E2C-AM4A E2C-JC4A
E2C-JC4AP E2C-GE4jE2C-GF4jE2C-WH4A E2C-WH4AF
Power supply
voltage (Operating
voltage range)
100 to
240 VAC (90
to 264 VAC)
50/60 Hz
12 to 24 VDC (10 to 30 VDC), ripple (p-p): 10% max. (see note 1)
Current consumption 55 mA max. 50 mA max. 45 mA max. 25 mA max. 25 mA max.
Sensing distance
adjustable range
(see note 2)
20% to 100% of rated sensing distance with a
4-turn potentiometer 20% min. of rated sensing distance 20% to 100% of rated sensing distance with a
4-turn potentiometer
Differential travel 1% to 5% of rated sensing
distance (see note 3) 10% max. of sensing distance
Response
time DC solid-
state Refer to the response frequency of the Proximity Sensor in use.
t
e
Relay 20 ms max. ---
Control
output DC solid-
state 50 mA max.
at 40 V with
a residual
voltage of
2Vmax.,
transistor
photocoupler
200 mA max.
at 40 V with a
residual
voltage of
1.5 V max.,
NPN and
PNP open
collector
output
100 mA max.
at 40 V with a
residual
voltage of
0.7 V max.
(1 V max. for
E2C-JC4AP),
NPN open
collector
output
100 mA max.
at 40 V with
a residual
voltage of
1.5 V max.,
NPN output
with a
resistance of
4.7 k#
100 mA max.
at 40 V with
a residual
voltage of
1.5 V max.,
PNP output
with a
resistance of
4.7 k#
200 mA max.
at 40 V with
a residual
voltage of
1.5 V max.,
NPN and
PNP open
collector
outputs
200 mA max.
at 40 V with
a residual
voltage of
1.5 V max.,
NPN and
PNP open
collector
output
Connector
output:
50 mA max.
with a
residual
voltage of
2Vmax.,
Transistor
photocoupler
Relay 2 A at 250
VAC, cos ø =
1 (resistive
load) (see
note 4),
SPDT relay
output
---
Output configuration NO/NC selectable

E2C E2C
4
Model E2C-WH4AFE2C-WH4A
E2C-GF4j E2C-GE4j
E2C-JC4A
E2C-JC4AP
E2C-AM4AE2C-AK4A
Self-diagnostic
output --- E2C-JA4AP
only.
Output
transistor
turns ON:
Sensor wire
burnout or
unstable
detection
50 mA max.
at 40 V with a
residual
voltage of 1 V
max., NPN
open collector
---
Timer function --- OFF-delay:
40"10 ms ---
Cable length
compensation Mode selection with a
4-throw switch E2C-JC4AP only.
3m/5mter-
minals with
short bar
Short-cir-
cuited: 1 to
3m
Open: 3 to
5m
--- 3 m/5 m selectable
Indicator Operation indicator and
stability indicator Operation indicator and
stability
indicator
Operation indicator
Ambient temperature Operating: --10!Cto55
!C (with no icing)
Ambient humidity Operating: 35% to 85% (35% to 95% for the E2C-JC4AP)
Temperature
influence "10% max. of sensing distance at 23!C in temperature range of --10!C and 55!C
Voltage influence DC models: "1% max. of sensing distance in rated voltage range of "20% of the rated power supply voltage
AC models: "1% max. of sensing distance in rated voltage range of "10% of the rated power supply voltage
Insulation resistance 50 M#(at 500 VDC) between current carry parts and case
Dielectric strength DC models: 1,000 VAC (50/60 Hz) for 1 min between current carry parts and case
AC models: 1,500 VAC (50/60 Hz) for 1 min between current carry parts and case
Vibration resistance Malfunction: 10 to 25 Hz,
2-mm double amplitude for
2hrseachinX,Y,andZ
directions
Malfunction:
10 to 55 Hz,
1.5-mm
double
amplitude for
2hrseachin
X, Y, and Z
directions
Malfunction: 10 to 25 Hz,
2-mm double amplitude for
2hrseachinX,Y,andZ
directions
Malfunction: 10 to 25 Hz,
2-mm double amplitude for
2hrseachinX,Y,andZ
directions
Shock resistance Malfunction: 100 m/s2(approx. 10G) for 3 times each in X, Y, and Z directions
Life expectancy Mechanical:
10,000,000
times min.
Electrical:
100,000
times min.
---
Weight Approx.
250 g Approx. 140 g Approx. 50 g (E2C-JC4AP:
Approx. 80 g)
Approx. 20 g Approx. 80 g
Note: 1. Apowersupplywithfull-waverectificationwithanaverageoutput of24VDC"10%canbeusedwithallE2CAmplifierUnitsexcept
the E2C-GE4j.
2. ThesensingdistanceadjustablerangeindicatesthesensingrangeoftheE2CAmplifierUnitinsatisfactoryoperationwithSensors.
3. The differential travel is adjustable within a range between 1% and 20% of the rated sensing distance if the E2C-CR5B is used.
4. The built-in Relay is the G2R-114P-V-VS with an operating voltage of 12 V.
5. The weight of each model does not include the weight of the connecting socket.

E2C E2C
5
Operation
Output Circuits
Main
circuit
50 mA max. 2.2 #
47 V
Output (+)
Output (--)
E2C-AK4A (AC-switching Amplifier Unit)
Note: Relay contact output is incorporated.
Main
circuit 2.2 #
47 V
47 V
200 mA max.
12 to 24 VDC
Output 1 (PNP)
Output 2 (NPN)
0V
E2C-AM4A (DC-switching Amplifier Unit)
E2C-GE4j(DC-switching Amplifier Unit) E2C-GF4j(DC-switching Amplifier Unit)
Main
circuit
4.7 k#
47 V
100 mA
max.
12 to 24 VDC
Output
0V
2.2 #Main
circuit
4.7 k#
47 V
100 mA max.
12 to 24 VDC
Output
0V
2.2 #
E2C-JC4A (DC-switching Amplifier Unit) E2C-JC4AP
Main
circuit
12 to 24 VDC
Brown (Red)
Output
Black (White)
0V
Blue (Black)
47 V
2.2 #
Load
12 to
24 VDC
100 mA
max.
0V
Brown (Red)
Black
(White)
Output
Blue (Black)
Orange (Yellow)
Self-diagnostic
output (50 mA
max.)
Operation
indicator Stability indicator
(Red) (Green)
2.2 #
3.9 #
ZD:V
Z=40 V
Main
circuit
Note: VoltageoutputfromE2C-GE4jwillbeavailableiftheoperationselector
issettoNC. Whenusingvoltageoutput, besure toresettheE2C-GE4j
afterthe E2C-GE4jisturnedon,atwhichmomenttheE2C-GE4jgen-
eratesa pulseforapproximately60ms.Nosuchpulseisgeneratedfrom
the E2C-GF4 with PNP output.
100 mA max.
E2C-WH4A (DC-switching Amplifier Unit) E2C-WH4AF
(DC-switching Amplifier Unit with Connector Output)
Main
circuit
12 to 24 VDC
0V
2.2 #
2.2 #
47 V
47 V
200 mA max.
Output 2 (PNP)
Output 1 (NPN)
12 to 24 VDC
0V
2.2 #
2.2 #
47 V
47 V
200 mA max.
Output 2 (PNP)
Output 1 (NPN)
2.2 #
47 V
50 mA max.
Connector output
Main
circuit

E2C E2C
6
Operating Charts
E2C-Aj4A
Mode
selector
Yes
No
Sensing
object
Relay output
(transistor output)
Operation
indicator ON
OFF
E2C-Gj4j
Mode
selector
Yes
No
Sensing
object
Transistor output
(voltage output)
Operation
indicator ON
OFF
Operation
Reset ON
OFF
E2C-JC4A
Yes
No
Sensing
object
Mode
selector
Operation
indicator ON
OFF
Output transistor, ter-
minals short-circuited
(OFF-delay enabled)
Output transistor, ter-
minals open (OFF-
delay disabled)
E2C-JC4AP
Mode
selector
Yes
No
Sensing
object
Timer switch ON
(OFF-delay enabled)
Timer switch OFF
(OFF-delay disabled)
Output transistor
Operation
indicator ON
OFF
E2C-WH4A(F)
Mode
selector
Yes
No
Sensing
object
Transistor
output
Operation
indicator ON
OFF
Self-diagnostic Function
The output transistor of self-diagnostic output will turn on instantly if the E2C detects one of the following events.
1. Sensor wire burnout
2. The operation indicator is ON for 0.3 s or more while the sensing object is at 93% to 100% of the sensing distance. This will occur if the
sensing object is in the wrong position, for example.
3. TheoperationindicatorisOFFfor0.3sormorewhilethesensingobjectlocatedat100%to107%ofthesensingdistance.Thiswilloccur
if the Sensor is influenced by the background of the sensing object, for example.
Sensor Wire is Burnt Out Sensor Wire is Connected
Sensing
object
Control
output (NO)
Self-diagnostic
output
Operation
Stability
Burnout Normal Burnout Normal
Red
Green
Red
Sensing
distance
Set distance
Operation
Stability
0.3 s min. 0.3 s min.
Indicator
Yes
No
Control
output (NO)
Self-diagnostic
output
Indicator
*Self-diagnostic outputwill be ON if thesensingobjectmoves at
slow speed, in which case, add an ON-delay timer circuit.
Note: Replace the 93% value with 96% and the 107% value
with 104% for the E2C-X2A.
Red
Green
GreenGreen

E2C E2C
7
Indicators
$The operation indicator is lit when the sensing object is near the
sensing distance.
$The stability indicator is lit when the sensing object position is
less than 95% or more than 107% of the sensing distance. The
stability indicator indicates the range in which each sensing
object is detected smoothly.
Stable non-
sensing area
Operation indicator
(red)
Not lit
Stability indicator
(green)
Stable sensing
area Lit
Set distance x
approx. 1.07
(see note)
Lit
Lit
Set distance
Set distance x
approx. 0.93
(see note)
Not lit
Note: Replace the 1.07 value with 1.04 and the 0.93 value with
0.96 for the E2C-X2A.
Sensitivity Adjustment
1. Initial Adjustment
After the E2C Amplifier Unit is turned on, adjust the following Sensor according to the status of each indicator without a sensing object.
$Status of
Indicators $Adjustment
E2C-JC4A Multi-function Model
E2C-Aj4A Multi-function Model
Lit
Operation
A
B
C
D
Sensitivity Operation Sensitivity Sensitivity
E2C-Gj4jSingle-function Model
E2C-WH4A(F) Multi-function Model
No adjustment is required.
Not Lit
Turn the sensitivity adjuster coun-
terclockwise until the operation in-
dicator turns off.
Lit Lit
Lit
Lit
Not Lit
NotLit NotLit
Not Lit
Indicator
mode
$Status of Indicators $Adjustment
Turn the sensitivity adjuster
counterclockwise so that the op-
eration indicator turns off and the
stability indicator is lit (i.e., the
E2C Amplifier Unit is in mode D).
No adjustment is required.
2. Sensitivity Adjustment
Item E2C-Gj4jSingle-function Model E2C-WH4A(F) Multi-function Model
Step 1 2 3 1 2 3
Sensing
Sensitivity
adjuster --- --- --- ---
Adjustment Obtain the
sensing distance
Xfromtheset
distance S
divided by 0.8.
Determine S so
that X will be
less than the
maximum
sensing
distance.
Locate the
Sensor so that
the distance
between the
Sensor and
sensing object is
X. Turn the
sensitivity
adjuster
clockwise until
the operation
indicator is lit.
Return the
Sensor to the
previous position
so that the
distance
between the
Sensor and
sensing object is
S. Secure the
position of the
Sensor to
complete the
sensitivity
adjustment.
Obtain the
sensing distance
Xfromtheset
distance S
divided by 0.8.
Determine S so
that X will be
less than the
maximum
sensing
distance.
Locate the
Sensor so that
the distance
between the
Sensor and
sensing object is
X. Turn the
sensitivity
adjuster
clockwise until
the operation
indicator is lit.
Return the
Sensor to the
previous position
so that the
distance
between the
Sensor and
sensing object is
S. Secure the
position of the
Sensor to
complete the
sensitivity
adjustment.
Note: If the E2C Amplifier Unit malfunctions due to radical ambient temperature changes, shorten the distance between the Sensor and
sensing object to 80% maximum of the set distance.

E2C E2C
8
Model E2C-Aj4A and E2C-JC4A Multi-function Models (See note 2)
Step 1 2 3 4
Sensing ---
Sensing object
Sensing object
Sensing object
Sensitivity adjuster ---
Adjustment Set the MD adjuster to
the center between “Min”
and “Max.”
Locate the sensing
object in the adjustment
range of sensing
distance and turn the
sensitivity adjuster
clockwise slowly until the
operation indicator is lit.
Move the sensing object
for a necessary
differential travel
distance (i.e., 1% to 5%
of the rated sensing
distance) and turn the
MD adjuster
counterclockwise slowly
until the operation
indicator turns off. Then
move the sensing object
and check that the
Sensor detects the
object when the object is
in the sensing distance
range.
Shorten the distance
between the Sensor and
sensing object and fix
the position of the
Sensor where both the
operation indicator and
stability indicator are lit
to complete the
sensitivity adjustment.
Note: 1. IftheE2CAmplifierUnitmalfunctionsduetoradicalambient temperaturechanges,furthershortenthedistancebetweentheSen-
sor and sensing object to 80% maximum of the set distance.
2. The E2C-JC4A has no function to adjust differential travel. Therefore, take steps 2 and 4 only.
Adjustment
Model E2C-JC4AP
Step 1 2 3
Sensing
Sensing object
Sensing object
Sensing object
Sensitivity adjuster --- ---
Adjustment Obtain the sensing distance X
from the set distance S divided
by 0.8. Determine S so that X
will be less than the maximum
sensing distance.
Locate the Sensor so that the
distance between the Sensor
and sensing object is X. Turn
the sensitivity adjuster
clockwise or counterclockwise
until the red operation indicator
is lit.
Return the Sensor to the
previous position so that the
distance between the Sensor
and sensing object is S. Secure
the position of the Sensor to
complete the sensitivity
adjustment. The green stability
indicator must be lit when the
sensing object is located within
the sensing distance and not lit
when the sensing object is
completely outside the sensing
distance.
Note: If the E2C Amplifier Unit malfunctions due to radical ambient temperature changes, further shorten the distance between the Sensor
and sensing object to 80% maximum of the set distance.
Acautionlabelis providedwith the E2CAmplifierUnit.Aftercompletingsensitivity adjustment,affixthecautionlabelovertheadjuster holeof
the cover to prevent mis-operation of the E2C Amplifier Unit.

E2C E2C
9
Engineering Data
Operating Range (Typical)
E2C-CR5B E2C-CR8jE2C-X1A/E2C-C1A
Sensing object: Iron
5x5x1mm
Sensing distance
(variable): 0.2 to 0.5 mm
Sensing distance X (mm)
2-dia. Sensing Head
Sensing object: Iron
5x5x1mm
Sensing distance
(variable): 0.16 to 0.8 mm
E2C-CR8j
Sensing Head
Sensing object: Iron
5x5x1mm
Sensing distance
(variable): 0.2 to 1 mm
E2C-X1A Sensing Head
E2C-C1A Sensing Head
Sensing distance X (mm)
Sensing distance X (mm)
Y (mm) Y (mm) Y (mm)
E2EC-X1R5A E2EC-X2A E2EC-X5A
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
Sensing object: Iron
8x8x1mm
Sensing distance
(variable): 0.3 to 1.5 mm
E2C-X1R5A Sensing Head
Sensing object: Iron
12 x 12 x 1 mm
Sensing distance
(variable): 0.4 to 2 mm
E2C-X2A Sensing Head
Sensing object: Iron
18x18x1mm
Sensing distance
(variable): 1 to 5 mm
E2C-X5A Sensing Head
Y (mm) Y (mm) Y (mm)
E2EC-CX10A E2EC-C20MA
Sensing distance X (mm)
Sensing distance X (mm)
E2C-X10A Sensing Head E2C-X20MA Sensing Head
Sensing object: Iron
30x30x1mm
Sensing distance
(variable): 2 to10 mm
Sensing object: Iron
50x50x1mm
Sensing distance
(variable): 4 to 20 mm
Y (mm) Y (mm)

E2C E2C
10
Sensing Distance vs. Sensing Object (Typical)
E2EC-CR5B E2C-CR8jE2C-X1A/E2C-C1A
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
Size of sensing object !(mm)
Iron
Stainless steel (SUS304)
Brass
Aluminum
Size of sensing object !(mm) Size of sensing object !(mm)
Iron
Iron
E2EC-X1R5A E2EC-X2A E2EC-X5A
Sensing distance X (mm)
Sensing distance X (mm)
Sensing distance X (mm)
Iron
Brass
Aluminum
Iron
Brass
Aluminum
Iron
Brass
Aluminum
Size of sensing object !(mm) Size of sensing object !(mm) Size of sensing object !(mm)
Stainless steel (SUS304) Stainless steel (SUS304) Stainless steel (SUS304)
E2EC-CX10A E2EC-C20MA
Sensing distance X (mm)
Sensing distance X (mm)
Iron
Brass
Aluminum
Iron
Brass
Aluminum
Size of sensing object !(mm) Size of sensing object !(mm)
Stainless steel (SUS304) Stainless steel (SUS304)