Datasheet

Relays for functional safety
Safety relays PNOZ X
PZE 9P
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
484
Wiring
Please note:
} Information given in the "Technical details [ 486]" must be followed.
} Outputs 13-14, 23-24, 33-34, 43-44, 53-54, 63-64, 73-74, 83-84 are safety contacts;
output 91-92 is an auxiliary contact (e.g. for display).
} Do not use auxiliary contact 91-92 for safety circuits!
} Do not connect undesignated terminals.
} To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 486]).
} 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 Technical details [ 486])
R
l
/km = cable resistance/km
} Use copper wire that can withstand 60/75°C.
} Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
} Do not switch low currents using contacts that have been used previously with high cur-
rents.
} 777140, 787140 units or 777148, 787148 units, when the supply voltage is connected
via B1 and B2: The power supply must comply with the regulations for extra low
voltages with safe electrical separation (SELV, PELV) in accordance with VDE 0100,
Part 410.
} Ensure the wiring and EMC requirements of IEC 60204-1 are met.