Smartscan Safety Light Curtain 1000 Series: Principle of Operation
Principle of Operation
The Smartscan 1000 series sensing unit consists of a transmitter and a receiver column that face
each other across an area to be safeguarded. The transmitter contains a row of infrared, light emitting diodes that sequentially transmit parallel beams of energy to corresponding receiving diodes in the receiver column. When the control/monitoring unit detects an obstruction in the optical path of one, or more of the beams that form the sensing field, the output signal switching devices (OSSD’s) will turn-OFF immediately.
The Smartscan 1000 series sensing unit consists of a transmitter and a receiver column that face
each other across an area to be safeguarded. The transmitter contains a row of infrared, light emitting diodes that sequentially transmit parallel beams of energy to corresponding receiving diodes in the receiver column. When the control/monitoring unit detects an obstruction in the optical path of one, or more of the beams that form the sensing field, the output signal switching devices (OSSD’s) will turn-OFF immediately.
The transmitter and receiver units operate entirely independently from each other, e.g. there are no electrical connections between the transmitter and receiver units. The transmitter column cabling consists of a two conductor, hard-wired cable, the conductors are for input power (+24Vdc & 0Vdc). The receiver column cabling consists of a four conductor, hard-wired cable, the conductors are for input power (+24Vdc & 0Vdc) and safety output signals (dual). All hard-wired cables assemblies are un-terminated.
Diagnostic Indicators
TRANSMITTER OK: A yellow ‘blinking’ indicators in the transmitter column indicates the unit is powered-up and the electronic system operational.
TRANSMITTER OK: A yellow ‘blinking’ indicators in the transmitter column indicates the unit is powered-up and the electronic system operational.
COMMUNICATION OK: A yellow ‘blinking’ indicators in the receiver column indicates that communication is established between transmitter and receiver.
OSSD's ON: Green LED indicator at the receiver unit illuminates when the electronic output switches, OSSD1 and OSSD2 are ‘ON’ (only when the light curtain detection zone is ‘clear’ of any obstruction).If the Green LED indicator is flashing an output fault has been detected.
OSSD's OFF: Red LED indicator at the RX unit illuminates when the electronic output switches, OSSD1 and OSSD2 are ‘OFF’ e.g. a trip condition or, when the light curtain detection zone is ‘blocked’. If the Red LED indicator is flashing the system is in lockout a fault has been detected.
OSSD's ON: Green LED indicator at the receiver unit illuminates when the electronic output switches, OSSD1 and OSSD2 are ‘ON’ (only when the light curtain detection zone is ‘clear’ of any obstruction).If the Green LED indicator is flashing an output fault has been detected.
OSSD's OFF: Red LED indicator at the RX unit illuminates when the electronic output switches, OSSD1 and OSSD2 are ‘OFF’ e.g. a trip condition or, when the light curtain detection zone is ‘blocked’. If the Red LED indicator is flashing the system is in lockout a fault has been detected.
Mode of Operation
Automatic Restart: After initial “Power Up” the light curtains OSSD’s become active (OSSD’s are “ON”). If the light curtains sensing unit is blocked the OSSD’s turn “OFF”. Once the obstruction has been removed from the sensing unit the light curtain automatically reactivates itself.(OSSD’s turn “ON”)
Additional functions & features such as relay outputs, muting, and more can be tied to the 1000 with the use on multi-function units. (Click on the picture or highlighted text for more information on the multi-function units)
Automatic Restart: After initial “Power Up” the light curtains OSSD’s become active (OSSD’s are “ON”). If the light curtains sensing unit is blocked the OSSD’s turn “OFF”. Once the obstruction has been removed from the sensing unit the light curtain automatically reactivates itself.(OSSD’s turn “ON”)
Additional functions & features such as relay outputs, muting, and more can be tied to the 1000 with the use on multi-function units. (Click on the picture or highlighted text for more information on the multi-function units)
