Application manual for PSRclassic and PSRmultifunction, and the modular safety relay system
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102597_en_03
3.2
Maximum cable lengths
Depending on the size of the machine or system, a considerable amount of cabling may be
required to wire the sensors.
Figure 3-2
Example for calculating the cable lengths
Make sure that the specified cable lengths are not exceeded, so as to ensure error-free
operation of the safety relay.
L+
(L1)
M
(N)
R1
R2
R3
PSR-ESAM4
A1
S11 S12
S21 S22
13
23
A2
S34 S35
14
24
41
42
(+)
( )
(GND)
( )
( )
( )
33
34
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