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. The operation indicator is OFF for 0.3 s or more while the sensing object located at 100% to 107% of the sensing distance. This will occur
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
Green
Green