MANUAL
• Subject to alteration! Version: August 2021
ipf electronic gmbh
│
Rosmarter Allee 14
•
58762 Altena
• Germany
│
Tel +49 2351 9365-0 • [email protected] •
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Forked light barriers
Intended use
Fork light barriers are used as part of a higher-level overall system for detecting objects.
Function
Fork light barriers work according to the principle of the through-beam light barrier. They are made of a transmitter and a
receiver, each housed in one side of the common housing. The beam direction transmitter to receiver is marked with arrows
on the housing sides.
The light beam emitted by the transmitter is fixed to the receiver. The output of the receiver switches its mode when the
light beam is interrupted. The output function can be switched between NO (dark switching) and NC (light switching). The
initial condition is indicated by a ring LED in the connector plug.
Mouting
Avoid external light on the receiver side! The beam direction from transmitter to receiver is marked with arrows on the
housing sides.
Mount the fork light barrier so that the object to be detected can pass freely through the fork opening. Depending on
the type, mounting is done with M3, M4 or M5 screws (For dimensional drawings please refer to our catalogue or on
our homepage).
The device may be installed in any position, but make sure that it is installed in a vibration-free and vibration-damping
manner. The device must be protected against mechanical stress, e.g. shocks or impacts.
Pay attention to the device-specific information on connection and operation. Do not operate the device outside the
specified temperature limits.
Electrical connection
The electrical connection is made via a 3-pole M8 cable socket, e.g. VK200071. The device has a push-pull switching output
and can be operated on both PNP and NPN control inputs.
LED display
The display is via a yellow ring LED on the connector. When the LED is constantly on, the switching output is active.
Operating ements
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Potentiometer response sensitivity:
The sensitivity is highest when the potentiometer is turned to the left.
The smallest possible parts are recorded.
The radiated power is the lowest in this case.
When the potentiometer is turned to the right, the sensitivity is at its lowest. So only larger parts are recorded.
The radiant power is at the maximum. With this setting, the forked light barriers have a high contamination limit.
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Output function:
The output function (NO/NC) is set with a rotary switch. Please refer to the type plate for the required switch
position. To prevent unintentional switching, the rotary switch is covered with a rubber cap.
Always set the switch for the output function to the left or right stop!
Intermediate positions lead to undefined initial conditions..
Maintenance and repair
Fork light barriers are almost maintenance-free. Remove deposits on the optics of the forked light barrier regularly with a
soft tissue. Repair only by ipf electronic gmbh.
