PNOZ s8
Operating Manual PNOZ s8
21400-EN-10
10
Wiring
Please note:
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Information given in the "
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Outputs 13-14 and 23-24 are safety contacts, the semiconductor output Y32 is an auxil-
iary output (e.g. for display).
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Semiconductor output Y32 should
not
be used for safety circuits!
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To prevent contact welding, a fuse should be connected before the output contacts (see
).
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Calculation of the max. cable length l
max
in the input circuit:
R
lmax
R
l
/ km
I
max
=
R
lmax
= max. overall cable resistance (see
R
l
/ km = cable resistance/km
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Use copper wire that can withstand 60/75 °C.
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Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
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Ensure the wiring and EMC requirements of EN 60204-1 are met.
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The power supply must comply with the regulations for extra low voltages with protect-
ive electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.
Preparing for operation
Supply voltage
AC
DC
A1
A2
24 V DC
0 V
PNOZsigma
expansion
module
Input circuit
Single-channel
Dual-channel
Base unit:
Safety relay PNOZ X
A1
A2
24 V DC
0 V
PNOZsigma
expansion
module
Base unit:
Safety relay PNOZelog
Driven via semiconductor outputs
(24 VDC)
A1
A2
0 V
O1
L-
PNOZsigma
expansion
module
