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Functions
4.2.5
DoubleScan
DEUTSCH
The receiver provides an option for increasing the availability with difficult environmental
conditions. It doesn’t switch off immediately after a beam interruption, but rather waits to
see if the interruption is still present in the next scan, before the receiver switches the
OSSDs off. If DoubleScan is active, the receiver switches to the OFF state as soon as the
same beam is interrupted in two consecutive scans.
ENGLISH
Fig. 4.2-4:
Example: DoubleScan, scan factor H = 2
FRANÇAIS
Warning!
The change to DoubleScan mode is described in Chapter 8. It results in an extension of the
response time. The values are shown in the tables in Chapter 12. The safety distance to
the danger point must be recalculated in accordance with Chapter 6.1!
4.3
Diagnostics function: Dirt and error signal output
For diagnostic purposes COMPACT has a short circuit-proof “Weak Beam/Error Indication”
signal output for forwarding to the machine control unit. Information on connection of the
signal output and connection examples can be found in Chapter 7.2.2, Chapter 7.3.2 and
Chapter 7.4.2.
ITALIANO
4.4
Test input
ESPAÑOL
As a type 4 AOPD, COMPACT has a constant self-monitoring function that independently
detects errors in the system as well as cross and short circuits on the output cables of the
machine interface. An external test signal is not required for this. To test the downstream
contactors, an external control (e.g. protective combination) via activation of the test signal
on the transmitter can switch off the OSSD outputs of the receiver and test the drop-out of
the switching elements. The test signal time is a maximum 3 seconds. If this test function is
not required, the transmitter’s connecting terminals (terminal 3 and 4) are connected with a
jumper. For this, see also Chapter 7.2, Chapter 7.3 and Chapter 7.4
NEDERLANDS
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COMPACT
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