Rockwell Automation 42JT VisiSight Photoelectric Clear Object Sensors - Manual (Page 2)

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yields the highest intensity of the green LED. Press and release
the button once to return to the RUN mode—or the sensor
returns to the RUN mode automatically in two minutes.
VisiSight™ Configuration
The 42JT VisiSight is configured using the pushbutton (or Remote
Teach) and the LED indicators on the sensor. There are five
features that can be configured:
• Static Teach: Standard sensitivity/sensing range adjustment
• Dynamic Teach (running process)
• Light operate (LO) or dark operate (DO) output
• Auto PNP/NPN, dedicated NPN or dedicated PNP
• Pushbutton lock/unlock
The sensor output is disabled during Teach.
Teach Sensitivity/Sensing Range
Static Teach:
Teaching the sensitivity/sensing range is a two step process:
Standard Teach:
1. Install and align the reflector
2. Teach reflector as target:
Align the sensor to the reflector. Press and hold button for three
seconds until the yellow LED starts flashing. Release the button.
The reflector has now been aligned.
With the reflector in the sensor’s field of view, press and release
the button. The teach process is complete.
If the push button is not pressed within 30 seconds, the sensor
exits teach mode and returns to RUN mode without learning
new setting.
t > 3 s
Reflector
t < 0.5 s
Reflector
Dynamic Teach (Running Process):
If the targets to be detected are moving with the sensor aimed at
the running process, press and hold the button for three seconds
until the yellow LED starts flashing. The sensitivity will
automatically be taught in the next 30 seconds provided the
sensor sees two cycles of “target” and “no target.”
Teach Light Operate (L.O.) or Dark Operate (D.O.)
The default setting of the output is Dark Operate (DO)
DO setting means that output turns ON when the target is
detected. If the application requires the output to turn OFF when
the target is detected, the setting may be changed to Light
Operate (LO).
1. To access the teach output mode setting:
2. To change the sensor output mode setting:
Output Type Selection:
Auto PNP/NPN, Dedicated NPN, Dedicated PNP)
The default setting is Auto PNP/NPN. This means the sensor
monitors the load connection and automatically configures for
the proper operation, i.e., PNP or NPN.
The following applications are covered with dedicated PNP or
dedicated NPN selection:
a. Parallel wiring of multiple sensor outputs: select dedicated
PNP or dedicated NPN setting, as needed.
b. If the load is connected for NPN configuration but to a
different power supply than the power to the sensor or via a
load enabling contact (e.g., a relay contact in series with the
load): select dedicated NPN.
Selection can be made as follows:
1. To access output type: Press and hold the pushbutton for
nine seconds (until both LEDs start flashing synchronously). At
the release of the button, the current setting of output type is
indicated by the slow flashing of the LED (or LEDs) as follows:
Press and hold button for six seconds until green LED starts
flashing. Release the button. The current setting is indicated by
the yellow LED:
L.O.: Yellow LED ON
D.O.: Yellow LED OFF
Press and release the button within ten seconds to toggle from
L.O. to D.O., the selection indicated by the yellow LED.
The sensor retains the setting per the last button depression and
returns to the RUN mode ten seconds after the last button is
depressed.
t > 6 s
t < 0.5 s