2
E3A2 E3A2
Slim Sensor with Plug-in Outputs,
Built-in T ime Delays
Plug-in replaceable outputs
Light-ON/Dark-ON operation, switch
selectable
Optional solid-state outputs
Polarized diffuse and through-beam
models
Timer models provide
selectable ON-delay , OFF-delay
and one-shot outputs
Standard with 3 A relay output
AC/DC Supply with Timer Models E3A2
Ordering Information
Method of detection Through-beam Retroreflective Diffuse reflective
Sensing distance 10 m (32.8 ft) 3 m (9.8 ft) 70 cm (27.6 in)
Part number Without timer E3A2-10M4 E3A2-R3M4 E3A2-DS70M4
ON-delay , OFF-delay, one-shot E3A2-10M4T E3A2-R3M4T E3A2-DS70M4T
equal ON- and OFF-delays
(0.1 to 5 seconds)
Independent ON-delays and E3A2-10M4D E3A2-R3M4D E3A2-DS70M4D
OFF-delays (0.1 to 5 seconds)
SENSORS
Description Part number
Solid-state AC (SCR) output module; 200 mA, 250 VAC max. load G3K-2R2P-1
output DC NPN output module; 200 mA, 30 VDC max. load, dual complementary G3KD-YR2P-1
modules DC PNP output module; 200 mA, 30 VDC max. load, dual complementary G3KD-YR2P-2
Reflector adapter for stud-mounting E39-R1 reflector E39-L7
ACCESSORIES
Description Part number
Relay output module, SPDT, 3 A at 250 VAC (output supplied with each sensor) G6C-2117P-DC8
Reflector (supplied with retroreflective sensor) E39-R1
Mounting bracket (supplied with each sensor) E39-L34
REPLACEMENT P ARTS
3
E3A2 E3A2
Specifications
Part number E3A2-10■■■ E3A2-R3■■■ E3A2-DS70■■■
Method of detection Through-beam Retroreflective Diffuse reflective
Supply voltage 24 to 240 VAC, 50/60 Hz; 12 to 240 VDC
Power Relay output type Emitter: 0.82 W max. 1.5 W max.
consumption DC solid-state output type Receiver: 1.2 W max.
AC solid-state output type Emitter: 0.82 VA max. 2 VA max.
Receiver: 1.2 VA max.
Sensing distance 10 m (32.8 ft) 3 m (9.8 ft) 70 cm (27.6 in) with
with E39-R1 reflector 10 x 10 cm (3.94 x 3.94 in)
(included) 90% reflectance white
mat paper
Light source Pulse modulated Pulse modulated red Pulse modulated
infrared LED (950 nm) LED, polarized (680 nm) infrared LED (950 nm)
Detectable object type Opaque materials, Opaque and mirror Opaque and
26 mm (1.02 in) surface materials, 56 mm translucent materials
minimum dimension (2.20 in) min. dimension
Operation mode Light-ON/Dark-ON, switch selectable
Sensitivity Fixed Adjustable
Mutual interference protection Not provided Provided
Control Relay Type SPDT with G6C-2117P-DC8 output module (standard)
output Max. load 3 A, 250 VAC (p.f. = 1); 3 A, 30 VDC
AC Type SCR with G3K-2R2P-1 output module (optional)
solid- Max. load 200 mA, 250 VAC
state Min. load 5 mA
Max. inrush 2 A
Off-state leakage current 1 mA max.
DC Type NPN-SPDT with G3KD-YR2P-1 output module (optional)
solid- PNP-SPDT with G3KD-YR2P-2 output module (optional)
state Max. load 200 mA, 30 VDC
Max. on-state voltage drop 2 VDC at 200 mA
Response Relay 15 ms max. with G6C-2117P-DC8 output module (standard)
time (ON AC solid-state output 30 ms max. with G3KD-2R2P-1 output module (optional)
and OFF) DC solid-state 1 ms max. with G3KD-YR2P-1 or -2 output modules (optional)
Timing T ype E3A2-■■■T Normal, ON-delay, OFF-delay, one-shot or equal ON- and OFF-delays,
functions switch selectable
T ype E3A2-■■■D Independent ON- and OFF-delays
Range 0.1 to 5 seconds
Circuit protection Output short-circuit Provided (AC solid-state and DC solid-state output modules only)
DC power supply reverse Provided
polarity
Indicators Emitter: Light Incident (red LED) and Output Stability
Power On (red LED) (green LED);
Receiver: Light Incident Output Operation (yellow LED) on timer-equipped
(red LED) and output sta- models
bility (green LED); Output
Operation (yellow LED) on
timer-equipped models
Materials Lens Plastic
Case Plastic
Mounting Side surface mount with two through holes; E39-L34 bracket and hardware included
Connections Conduit 1/2-14 NPT
Wire Terminal screws
Weight Emitter: 200 g (7.1 oz) 200 g (7.1 oz)
Receiver: 200 g (7.1 oz)
(Table continues on the next page)
4
E3A2 E3A2
Part number E3A2-10■■■ E3A2-R3■■■ E3A2-DS70■■■
Enclosure ratings NEMA 1, 4, 4X, 12
IEC 144 IP66
Approvals UL Listed, File Number E41515
Ambient Operating -25° to 55°C (-13° to 131°F)
temperature Storage -30° to 70°C (-22° to 159°F)
Specifications Table - continued from previous page
CONNECTIONS
Through-Beam Type Retroreflective and Diffuse Reflective Types
OUTPUT CIRCUIT DIAGRAMS
Relay output AC solid-state output
DC solid-state PNP output DC solid-state NPN output
Light Source Receiver
24 to 240 VAC
12 to 240 VDC
24 to 240 VAC
12 to 240 VDC See Output
Circuit Diagrams
See Output
Circuit Diagrams
24 to 240 VAC
12 to 240 VDC
5
E3A2 E3A2
TIMING CHART
NOTE:
1. For sensors without built-in timer
functions, operation follows the
NORM mode shown with multi-
function time delay models.
2. T1, T2 and T denote set time, variable
within 0.1 to 5 second range.
3. For multifunction time delay models
(part numbers ending in “T”), the ON-
and OFF-delay time settings will be
the same.
4. For ON- and OFF-delay models (part
numbers ending in “D”), T1 and T 2 are
independently variable.
5. O.S.D.: one shot delay
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E3A2 E3A2
EXCESS GAIN RATIO
Through-Beam Type
Engineering Data
LIGHT SOURCE/RECEIVER
SETTING RANGE
Through-Beam Type
Distance X [m (ft)]
Distance Y [cm (in)]
REFLECTOR SETTING RANGE
Retroreflective Type
Distance X [m (ft)]
Distance Y [mm (in)]
OPERATING RANGE
Diffuse Reflective Type
Distance X [cm (in)]
Distance Y [mm (in)]
DETECTING DISTANCE VS. MINIMUM
TARGET SIZE (AT MAXIMUM SENSITIVITY)
Diffuse Reflective Type
Area of detectable object [cm2 (in2)]
Detecting distance [cm (in)]
Excess gain ratio
Distance [m (ft)]
Excess gain ratio
Distance [m (ft)]
Excess gain ratio
Distance [cm (in)]
Retroreflective Type Diffuse Reflective Type
E3A2 E3A2
Dimensions
Unit: mm (inch)
E39-R1 Reflector E39-L7 Reflector Adapter
LIGHT and STABILITY indicators LIGHT -ON/DARK-ON and
function selector
OPERATION indicator
(Timer function
equipped type only)
4-hexagonal spot facing
width across flats: 8 (.31)
depth: 4 (.16)
2-5.5 (.22) dia.
mounting holes
Mounting holes
OMRON ELECTRONICS LLC OMRON CANADA, INC.
One East Commerce Drive 885 Milner Avenue
Schaumburg, IL 60173 Scarborough, Ontario M1B 5V8
1-800-55-OMRON 416-286-6465
Cat. No. CEDSAX4 11/01 Specifications subject to change without notice. Printed in the U.S.A.
OMRON ON-LINE
Global - http://www.omron.com
USA - http://www.omron.com/oei
Canada - http://www.omron.com/oci