Pilz PNOZ s8 Data Sheet
Contact expansion modules
up to PL c of EN ISO 13849-1
PNOZ s8
Gertebild
][Bildunterschrift Kontakterweiterungen
Contact expansion module for increasing the number of available contacts
Approvals
PNOZ s8
SÜDDEUTSCHLAND
Zulassungen
Unit features
Gertemerkmale
` Relay outputs:
– 2 safety contacts (N/O), instanta-
neous
` 1 semiconductor output
` LED indicator for:
– Input status, channel 1
– Input status, channel 2
– Switch status of the safety con-
tacts
– Error
` Plug-in connection terminals (either
spring-loaded terminal or screw
terminal)
Unit description
Bestimmung/Gertebesch reibung Kontakter weiterungen Schalt _PNOZ
The unit meets the requirements of
EN 60947-5-1, EN 60204-1 and
VDE 0113-1. The contact expansion
module is used to increase the number
of instantaneous safety contacts available on a base unit. Base units are all
safety relays with feedback loop monitoring.
The category that can be achieved in
accordance with EN 954-1 and
EN ISO 13849-1 depends on the category of the base unit. The contact expansion module may not exceed this.
Safety features
Safety features
The unit meets the following safety requirements:
` The unit monitors its own output
contacts.
` The safety function remains effec-
tive in the case of a component failure.
` Earth fault in the feedback loop:
Detected, depending on the base
unit that is used.
` Earth fault in the input circuit:
The output relays de-energise and
the safety contacts open.
Block diagram
Blockschaltbild
A1 A2
=
Power
=
Input
Y32
K1
K2
13
14
23
24
unit
Interface
expansion
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-399-2010-10
Contact expansion modules
up to PL c of EN ISO 13849-1
PNOZ s8
Function description
][Funktionsbeschreibung_Erweiterungsgert
with PNOZsigma base unit:
` Dual-channel operation via
PNOZsigma connector
Timing diagram
Output safe
Key
` Power: Supply voltage
` Input: Input circuits A1
` Output safe: Safety contacts 13-14,
23-24
Wiring
without PNOZsigma base unit:
` Single-channel operation: one input
circuit affects the output relays
Zeitdiagramm
POWER
Input
Out semi
t1 t1t2 t2
` Out semi: Semiconductor output
Y32
: Switch-on delay
` t
1
` t
: Delay-on de-energisation
2
][Verdrahtung_Si_unverz
Please note:
` Information given in the “Technical
details” must be followed.
` Outputs 13-14, 23-24 are safety
contacts.
` To prevent contact welding, a fuse
should be connected before the
output contacts (see technical details).
` Calculation of the max. cable runs
in the input circuit:
l
max
R
lmax
=
I
max
Rl / km
R
= max. overall cable resist-
lmax
ance (see technical details)
/km = cable resistance/km
R
l
` Use copper wire that can withstand
60/75 °C.
` Sufficient fuse protection must be
provided on all output contacts with
capacitive and inductive loads.
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-399-2010-10Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
-2
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