Operating instructions

Operating Instructions Chapter 11
C4000 Standard/Advanced
8009861/WA65/2012-06-12 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 79
Subject to change without notice
Technical specifications
11.3 Response time
T
he response time depends on the following parameters:
 number of beams
 beam coding
 configuration of floating blanking
 number of cascaded systems
 the output signal switching device used (see section 11.3.1 “Different response times”
on page 81)
How to determine the response time of the system:
 Read the response times of the individual systems (shown on type label). Note whether
the system is operated with or without beam coding.
If you are planning the application without actually having any devices available, you
may also determine the response time using Tab. 31 and Tab. 32. When determining
the number of beams in Tab. 31, the physical resolution is important. The physical
resolution of the light curtain does not change even if fixed or floating blanking has
been selected.
 Fill out the following table to determine the total response time.
Line Required detail Response time
1 Host ms
2 Guest 1 + ms
3 Guest 2 + ms
Greatest response time from lines
1 to 3: × 0.5 = + ms
4 Only if floating
blanking is used:
Deduct 4 ms here. – ms
5 If single guest is used, then add 8 ms here. (If no guest is
used or two guests are used, do not add anything here.) + ms
6 Total response time to be taken into account
(The total response time must be  108 ms!) = ms
 Verify that the total response time determined is  108 ms. EN 61496C1 does not
permit response times exceeding 108 ms. If necessary, adjust the configuration.
Note
Tab.
30
:
Determining the
response time of a C4000
system