E3C-WE4 Datasheet, PDF (9/16 Pages) Omron Electronics LLC – Thin, Compact Head Saves Space and Mounts Closely. Built-in Interference Protection Provided.

Nomenclature/Settings
E3C
Amplifier Units
Nomenclature
Operation
indicator (red)
When a relay-switch
operates, the indicator turns
on.
Stability indicator (green)
When the light receiving input
becomes +20% or more and −20%
or less of operating voltage, it will
be turned on. (Indicate stable status)
Operation switching
Settings
DARK ON
DARK ON
LIGHT ON
LIGHT ON
DARK turns the relay ON and the transistor out-
put "H".
LIGHT turns the relay ON and the transistor out-
put "H".
Response time changing (The different frequency type can be
made up by changing the response speed.)
E3C-A
Operation
selector
Response
time
selector
switch
Light indicator
(red)
When the light
inputs,
it will be turned on.
Sensitivity adjuster
Operation indicator
(red)
When a relay-switch
operates, the indicator turns
on.
Operation
selector
Stability indicator (green)
When the light receiving input
becomes +20% or more and −20%
or less of operating voltage, it will be
turned on. (Indicate stable status)
Selector
switch for
response
time
Timer
function
setting
switch
Delay
time setting
switch
Delay time adjuster
Light indicator
(red)
When the light
inputs,
it will be turned on.
Sensitivity adjuster
2 ms (B)
1 ms (A) The response time is set to 2 ms.
2 ms (B)
1 ms (A) The response time is set to 1 ms.
Timing chart
Incident light
No incident light
Selector switch for
operating mode
LIGHT ON
Selector switch for
operating mode
DARK ON
t
t
Output
Relay Solid
state
"a" "H"
"b" "L"
"a" "H"
"b" "L"
(Output
transistor)
(OFF)
(ON)
(OFF)
(ON)
Note 1. Control output is produced only during input time.
2. When t exceeds 1 ms or 2 ms, solid-state output is produced.
To produce relay output, t must be longer than 20 ms.
Operation switching
DARK ON
DARK ON
LIGHT ON
LIGHT ON
DARK turns the relay ON and the transistor out-
put "H".
LIGHT turns the relay ON and the transistor out-
put "H".
Response time changing (The different frequency type can be
made up by changing the response speed.)
2 ms (B)
1 ms (A) The response time is set to 2 ms.
2 ms (B)
1 ms (A)
Delay time setting
The response time is set to 1 ms.
1 sec
10 sec
0.1 to 1 s can be set.
1 sec
10 sec
1 to 10 s can be set.
E3C-C
After setting the selector, fine-adjust the delay time with the
variable adjuster. (Clockwise turn increases the delay time.)
Timer function setting
When select-
ing ON delay
(ON D.)
DARK ON
2 ms (B)
DELAY
ON D.
1 sec
When select-
ing OFF de-
lay (OFF D.)
DARK ON
2 ms (B)
DELAY
ON D.
1 sec
When select-
ing one-shot
delay
(O.S.D.)
DARK ON
2 ms (B)
DELAY
ON D.
1 sec
LIGHT ON Set a position freely
1 ms (A)
Set a position freely
O.S.D.
OFF D.
10 sec
Set a position freely
LIGHT ON
1 ms (A)
Set a position freely
Set a position freely
O.S.D.
OFF D.
10 sec
Set a position freely
LIGHT ON Set a position freely
1 ms (A) Set a position freely
O.S.D.
OFF D.
10 sec
Since the function has
stopped, it allows in
both of the positions.
Set a position freely
Min
Max
TIME
Timing chart
t
Incident light
No incident light
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T
ON D.
T
T
DARK ON
T
T
LIGHT ON
OFF D.
T
DARK ON
T
T
LIGHT ON
O.S.D.
T
T
DARK ON
Output
Relay Solid
state
(Output
transistor)
"a" "H" (OFF)
"b" "L" (ON)
"a" "H" (OFF)
"b" "L" (ON)
"a" "H" (OFF)
"b" "L" (ON)
"a" "H" (OFF)
"b" "L" (ON)
"a" "H" (OFF)
"b" "L" (ON)
"a" "H" (OFF)
"b" "L" (ON)
Note 1. t must be longer than 1 ms or 2 ms. 2. T denotes a delay time.
External synchronous input operation
When the external synchronous input terminal (9) is open (HIGH), the output
relay performs timer operation according to the input signals (LIGHT, DARK).
When the external synchronous input terminaL (9) is connected to the 0 V ter-
minal (2) (LOW), the output relay turns OFF, independently of the input signals
and output status, and acts as an inhibit signal.
9