Omron E2C - Operating Charts and Functions; Operating Charts; Self-Diagnostic Function

E2C
E2C
6
Operating Charts
E2C-A
j
4A
Mode
selector
Yes
No
Sensing
object
Relay output
(transistor output)
Operation
indicator
ON
OFF
E2C-G
j
4
j
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. TheoperationindicatorisOFF for 0.3 s ormore whilethesensingobject locatedat 100%to107% of thesensingdistance.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 output will be ON if the sensing object moves 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