Phoenix Contact PSR-CT Series, Operating Instructions Manual, Page: 36 / 69

PSR-CT
36 / 69
PHOENIX CONTACT 108366_en_01
4.4.1 Checking the planned design
Check the planned design using Table 4-3 “Example table for cable lengths”. Proceed as
described in the example.

See “Example: determining the cable length” on page 37.
The information on the cable lengths applies under the following conditions:
– The requirements on the connecting cables according to Table 4-1 are adhered to.
Table 4-3 Example table for cable lengths
n
Maximum number of
switches
i
out
[mA]
Possible output current per
channel FO1A/FO1B
l1 [m]
Maximum cable length from
the last switch to the control-
ler
0.34 mm² cable
5
10 100
25 100
50 80
100 50
6
10 100
25 90
50 70
100 50
10
10 70
25 60
50 50
100 35
Note that connecting a reset button will influence the cable length design.
If you are connecting more than ten switches in series, please contact Phoenix Contact: