Pilz PNOZ s8 User manual

PNOZ s8
Operating Manual-21400-EN-10
}Safety relays

Preface
This document is the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made
for the user's internal purposes. Suggestions and comments for improving this documenta-
tion will be gratefully received.
Source code from third-party manufacturers or open source software has been used for
some components. The relevant licence information is available on the Internet on the Pilz
homepage.
Pilz®, PIT®, PMI®, PNOZ®, Primo®, PSEN®, PSS®, PVIS®, SafetyBUS p®,
SafetyEYE®, SafetyNET p®, the spirit of safety® are registered and protected trademarks
of Pilz GmbH & Co. KG in some countries.
SD means Secure Digital

Contents
Operating Manual PNOZ s8
21400-EN-10 3
Introduction 5
Validity of documentation 5
Using the documentation 5
Definition of symbols 5
Safety 6
Intended use 6
Safety regulations 6
Safety assessment 6
Use of qualified personnel 7
Warranty and liability 7
Disposal 7
For your safety 7
Unit features 8
Safety features 8
Block diagram/terminal configuration 8
Function description 9
Timing diagram 9
Installation 9
Wiring 10
Preparing for operation 10
Operation 11
Status indicators 12
Error indicators 12
Faults - malfunctions 12
Dimensions in mm 12
Technical details 13
Safety characteristic data 16
Supplementary data 17
Service life table 17
Permitted operating height 18

Contents
Operating Manual PNOZ s8
21400-EN-10 4
Remove plug-in terminals 19
Order reference 19
EC declaration of conformity 19

PNOZ s8
Operating Manual PNOZ s8
21400-EN-10 5
Introduction
Validity of documentation
This documentation is valid for the product PNOZ s8. It is valid until new documentation is
published.
This operating manual explains the function and operation, describes the installation and
provides guidelines on how to connect the product.
Using the documentation
This document is intended for instruction. Only install and commission the product if you
have read and understood this document. The document should be retained for future ref-
erence.
Definition of symbols
Information that is particularly important is identified as follows:
DANGER!
This warning must be heeded! It warns of a hazardous situation that poses
an immediate threat of serious injury and death and indicates preventive
measures that can be taken.
WARNING!
This warning must be heeded! It warns of a hazardous situation that could
lead to serious injury and death and indicates preventive measures that can
be taken.
CAUTION!
This refers to a hazard that can lead to a less serious or minor injury plus
material damage, and also provides information on preventive measures
that can be taken.
NOTICE
This describes a situation in which the product or devices could be dam-
aged and also provides information on preventive measures that can be
taken. It also highlights areas within the text that are of particular import-
ance.

PNOZ s8
Operating Manual PNOZ s8
21400-EN-10 6
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The contact expansion module PNOZ s8 meets the requirements of EN60947-5-1,
EN60204-1 and VDE0113-1. It is used to increase the number of safety contacts available
on a base unit. Base units are all safety relays with feedback loop.
The max. achievable safety level depends on the base unit. The expansion module may not
exceed this. The safety-related characteristic values stated under Safety-related character-
istic data [ 16] can only be achieved if the base unit also exhibits these values.
The following is deemed improper use in particular
}Any component, technical or electrical modification to the product,
}Use of the product outside the areas described in this manual,
}Use of the product outside the technical details (see Technical details [ 13]).
NOTICE
EMC-compliant electrical installation
The product is designed for use in an industrial environment. The product
may cause interference if installed in other environments. If installed in other
environments, measures should be taken to comply with the applicable
standards and directives for the respective installation site with regard to in-
terference.
Safety regulations
Safety assessment
Before using a device it is necessary to perform a safety assessment in accordance with
the Machinery Directive.
Functional safety is guaranteed for the product as a single component. However, this does
not guarantee the functional safety of the overall plant/machine. In order to achieve the re-
quired safety level for the overall plant/machine, define the safety requirements for the
plant/machine and then define how these must be implemented from a technical and organ-
isational standpoint.

PNOZ s8
Operating Manual PNOZ s8
21400-EN-10 7
Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.
A competent person is a qualified and knowledgeable person who, because of their train-
ing, experience and current professional activity, has the specialist knowledge required. To
be able to inspect, assess and operate devices, systems and machines, the person has to
be informed of the state of the art and the applicable national, European and international
laws, directives and standards.
It is the company’s responsibility only to employ personnel who
}Are familiar with the basic regulations concerning health and safety / accident preven-
tion,
}Have read and understood the information provided in the section entitled Safety
}Have a good knowledge of the generic and specialist standards applicable to the spe-
cific application.
Warranty and liability
All claims to warranty and liability will be rendered invalid if
}The product was used contrary to the purpose for which it is intended,
}Damage can be attributed to not having followed the guidelines in the manual,
}Operating personnel are not suitably qualified,
}Any type of modification has been made (e.g. exchanging components on the PCB
boards, soldering work etc.).
Disposal
}In safety-related applications, please comply with the mission time TM in the safety-re-
lated characteristic data.
}When decommissioning, please comply with local regulations regarding the disposal of
electronic devices (e.g. Electrical and Electronic Equipment Act).
For your safety
The unit meets all the necessary conditions for safe operation. However, please note the
following:
}Note for overvoltage category III: If voltages higher than low voltage (>50 VAC or >120
VDC) are present on the unit, connected control elements and sensors must have a
rated insulation voltage of at least 250 V.

PNOZ s8
Operating Manual PNOZ s8
21400-EN-10 8
Unit features
}Relay outputs:
– 2 safety contacts (N/O), instantaneous
}1 semiconductor output
}LED for:
– Input status, channel1
– Input status, channel2
– Switch status of the safety contacts
– Fault
}Plug-in connection terminals (either spring-loaded terminal or screw terminal)
}See order reference for unit types
Safety features
The unit meets the following safety requirements:
}The unit monitors its own output contacts.
}The safety function remains effective 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/terminal configuration
Interface
expansion
module
Fig.: Centre: Front view with cover, right: Front view without cover
*Safe separation from non-marked area in accordance with EN 60947-1, 6 kV, basic insula-
tion between all safety contacts.

PNOZ s8
Operating Manual PNOZ s8
21400-EN-10 9
Function description
with PNOZsigma base unit:
}Dual-channel operation via PNOZsigma connector
without PNOZsigma base unit:
}Single-channel operation: one input circuit affects the output relays
Timing diagram
POWER/Input
Legend
}POWER/Input: Supply voltage/input
}Output safe: Safety contacts
}Out semi: Semiconductor output
}t1: Switch-on delay
}t2: Delay-on de-energisation
Installation
Install contact expansion module without base unit:
}Ensure that the plug terminator is inserted at the side of the unit.
Connect base unit and PNOZsigma contact expansion module:
}Remove the plug terminator at the side of the base unit and at the contact expander
module
}Connect the base unit and the contact expansion module using the connector supplied,
before mounting the units to the DIN rail.
Control cabinet installation
}The safety relay should be installed in a control cabinet with a protection type of at least
IP54.
}Use the notch on the rear of the unit to attach it to a DIN rail (35 mm).
}When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).
}Push the unit upwards or downwards before lifting it from the DIN rail.

PNOZ s8
Operating Manual PNOZ s8
21400-EN-10 10
Wiring
Please note:
}Information given in the "Technical details [ 13]" must be followed.
}Outputs 13-14 and 23-24 are safety contacts, the semiconductor output Y32 is an auxil-
iary output (e.g. for display).
}Semiconductor output Y32 should not be used for safety circuits!
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 13]).
}Calculation of the max. cable length lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 13])
Rl/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.
}Ensure the wiring and EMC requirements of EN 60204-1 are met.
}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
A20 V
O1
L-
PNOZsigma
expansion
module