Pilz PNOZ c2 User manual

PNOZ c2
Operating Manual-22212-EN-04
}Safety relays

Preface
This document is a translation of the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made
for internal purposes. Suggestions and comments for improving this documentation 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 c2
22212-EN-04 3
Introduction 4
Validity of documentation 4
Using the documentation 4
Definition of symbols 4
Safety 5
Intended use 5
Safety regulations 5
Safety assessment 5
Use of qualified personnel 5
Warranty and liability 6
Disposal 6
For your safety 6
Unit features 7
Safety features 7
Block diagram/terminal configuration 7
Function description 8
Installation 8
Wiring 8
Connect cable with crimp connector 9
Connect cable without crimp connector 10
Disconnect cable 10
Preparing for operation 11
Operation 12
Status indicators 12
Faults - malfunctions 13
Dimensions in mm 13
Technical details 14
Safety characteristic data 17
Supplementary data 17
Service life graph 18
Order reference 19
EC declaration of conformity 19

PNOZ c2
Operating Manual PNOZ c2
22212-EN-04 4
Introduction
Validity of documentation
This documentation is valid for the product PNOZ c2. 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 c2
Operating Manual PNOZ c2
22212-EN-04 5
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The safety relay meets the requirements of EN60947-5-1, EN60204-1 and VDE0113‑1
and may be used in applications with dual-channel positive switching OSSDs such as
}periodically tested light guard type 2 in accordance with EN 61496-1
}Light guard type 4 EN 61496-1
}safe sensors with semiconductor outputs
The safety relay provides a safety-related interruption of a safety circuit.
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).
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 unit 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.
Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.

PNOZ c2
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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 this description under "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.

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Unit features
}Positive-guided relay outputs:
– 2 safety contacts (N/O), instantaneous
}1 semiconductor output (auxiliary output)
}Connection options for:
– Type 2 or Type 4 light guards
– safe sensors with semiconductor outputs (OSSD)
– Start button
}LED display for:
– Supply voltage
– Switch status channel 1
– Switch status channel 2
Safety features
The safety relay meets the following safety requirements:
}The circuit is redundant with built-in self-monitoring.
}The safety function remains effective in the case of a component failure.
}The correct opening and closing of the safety function relays is tested automatically in
each on-off cycle.
Block diagram/terminal configuration
14
S33
S35
S34
13
23
24
Y32
PNOZ c2
S22
S12
A2
A2
A2
A1
A1
A1
Power
Ch. 1
Ch. 2
tD12ms
* Insulation from non-marked area: Safe separation (overvoltage category III),
Insulation between relay contacts: basic insulation (overvoltage category III), safe separa-
tion (overvoltage category II)

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Function description
When the supply voltage is supplied, the "POWER" LED illuminates. The unit is ready for
operation when the start circuit is closed or a start contact in the start circuit is opened and
then closed again.
}High signal at the input circuit (e.g. light guard not interrupted): The safety contacts are
closed and the auxiliary contact is enabled.
}Low signal at the input circuit (e.g. light guard interrupted): The safety contacts are
open and the auxiliary contact is disabled.
}Dual-channel operation without detection of shorts across contacts: Redundant input
circuit, detects earth faults in the start and input circuit .
}Automatic start: Unit is active as soon as a high signal is present at the input circuit.
}Monitored start: Unit is active when there is a high signal at the input circuit is closed
and then the start circuit is closed.
}Increase in the number of available contacts by connecting contact expander modules
or external contactors/relays.
Installation
}The unit 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.
}Ensure the unit is mounted securely on a vertical DIN rail (35 mm) by using a fixing ele-
ment (e.g. retaining bracket or an end angle).
Wiring
Please note:
}Information given in the "Technical details" 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).
}Use copper wire that can withstand 60/75°C.
}Do not connect capacitive load.
}Do not switch low currents using contacts that have been used previously with high cur-
rents.
}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.
}Ensure the wiring and EMC requirements of IEC 60204-1 are met.

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INFORMATION
The voltage at the inputs S12, S22 has to be at least 24 V DC less the lower
tolerance value of the supply voltage (s. technical details). When the voltage
is too low, increase the supply voltage until at least the lower tolerance
value is reached at the inputs.
Connect cable with crimp connector
}Strip the cable [1] and apply a crimp connector.
}Insert the stripped cable with the crimp connector applied into the terminal point [2] [3]
as far as it will go.
NOTICE
Do not use a tool to connect the cable.
[1] [2] [3]
10 mm
Fig.: Connect cable with crimp connector

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Connect cable without crimp connector
}Strip the cable [1].
}Using the screwdriver, press the actuator button [2] and insert the stripped cable into
the terminal point [2] [3] as far as it will go.
We recommend you use a screw driver with a 0.4 x 2.5 mm (DIN 5264) blade!
[1] [2] [3]
10 mm
Fig.: Connect cable without crimp connector
Disconnect cable
We recommend you use a screw driver with a 0.4 x 2.5 mm (DIN 5264) blade!
}Using the screwdriver, press the actuator button and pull the cable out of the terminal
point [4].
[4]
Fig.: Disconnect cable