General - Omron F3EM2-005 Series Operation Manual

2-1 General

2-1 General

The light curtain consists of one bar with light emitting optical elements and of one with
receiving optical elements. The photosensitive elements are scanned in sequence, thus
broken rays are detected.
F3EM2 features optical synchronisation and does not require synchronization wire between
transmitter and receiver. The sync-function is provided by the upper beam located on the
opposite side of the connector (see illustration below). During operation this beam must always
be kept free. Otherwise it will result a loss of synchronism between the transmitter and
receiver.
2
For applications where also the upper beam is needed for measurement synchronization by
wire can be activated (see '4-1 DIP switch setting' on page 4-2). In this case transmitter and
receiver must be connected by a sync-wire (see '2-5 Wiring & output circuit' on page 2-5).
2-2
1st BEAM
D
D
F3EM2 MEASURING LIGHT CURTAINS OPERATION MANUAL
x
X: measuring direction
L
L: Maximum measurement area
D: System resolution
x
X: measuring direction
L
L: Maximum measurement area
D: System resolution