PSR-CT
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108366_en_01
2.9
Limit range monitoring
The moving part of a safety equipment product can settle with time. The actuator is attached
to the moving part of the safety equipment product, and therefore moves out of the response
area of the sensor. The sensor detects this and indicates that the actuator is within the limit
range with a flashing DIAG LED. In this way, the safety equipment can be readjusted in time.
See Section “LED status indicators and switching states” on page 43.
2.10
Series connection
PSR-CT safety switches are suitable for operation in a series connection according to
EN ISO 14119. If a safety equipment product is opened, or an error occurs at a safety
switch, the entire system is switched off.
Connect a
maximum of 30
safety switches in series.
Observe the corresponding
minimum distances
between the safety switches and the
maximum cable length
of a switch chain.
See Section “Mounting” on page 26 and Section “Maximum cable lengths” on page 35.
Observe the rise of the
risk time
for a switch chain.
See Appendix “Explanation of the typical system times” on page 65.