Pilz PNOZ e1.1p User manual
PNOZ e1.1p
Operating Manual 21238-EN-06
}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 e1.1p
21238-EN-06 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
Unit features 8
Safety features 8
Block diagram/terminal configuration 8
Function description 9
Operating modes 9
Selecting sensors 10
Installation 10
Wiring 11
Preparing for operation 12
Supply voltage 12
Input circuit 12
Start circuit 13
Feedback loop 13
Logic connection between several units 15
Logic input S35 and S36 16
Examples 17
Operation 21
Status indicators 21
Faults – Interference 22
Dimensions in mm 27
Technical details 27
Safety characteristic data 30
PNOZ e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 5
Introduction
Validity of documentation
This documentation is valid for the product PNOZ e1.1p. 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 e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 6
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The safety relay PNOZ e1.1p provides a safety-related interruption of a safety circuit.
The safety relay meets the requirements of EN60947-5-1, EN60204-1 and VDE0113‑1
and may be used in applications with
}E-STOP pushbuttons
}Safety gates
}Light grids and safety switches with detection of shorts across contacts
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 [ 27]).
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.
PNOZ e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 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 someone who, because of their training, experience and current pro-
fessional activity, has the specialist knowledge required to test, assess and operate the
work equipment, devices, systems, plant and machinery in accordance with the general
standards and guidelines for safety technology.
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"
}And have a good knowledge of the generic and specialist standards applicable to the
specific 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).
PNOZ e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 8
Unit features
}Outputs using semiconductor technology:
– 2 safety outputs
– 1 auxiliary output
– 2 test pulse outputs
}Connection options:
– E-STOP pushbuttons
– Safety gate limit switches
– Start button
– Proximity switch
}To process signals from output signal switching devices (OSSDs) on light grids
}LED display for:
– Supply voltage
– Switch status of the safety contacts
}2 logic inputs (AND/OR) for logic connections between several units
}Feedback loops for monitoring external contactors
}Detection of shorts across contacts via test pulse outputs
Safety features
The relay meets the following safety requirements:
}The circuit is redundant with built-in self-monitoring.
}The safety device remains effective in the case of a component failure.
}The safety outputs are tested periodically using an off-test.
Block diagram/terminal configuration
InputInput &Feed-
back
Diag-
nostic
Power
Test
Pulse
Output
S12 S35 S36 Y6
Y5 S11 S21 14 24Y32
A1 A2 S22
Start
S34Y4
PNOZ e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 9
Function description
When supply voltage is applied and the set operating mode is detected (initialisation
phase), the "POWER" LED is lit. The unit is ready for operation when the feedback loop is
closed.
}Input circuit is closed (e.g. E-STOP pushbutton not operated):
– There are high signals at safety outputs 14 and 24 and auxiliary output Y32.
– The LEDs "CH.1" and "CH.2" are lit.
}Input circuit is opened (e.g. E-STOP pushbutton operated):
– There are low signals at safety outputs 14 and 24 and auxiliary output Y32.
– The LEDs "CH.1" and "CH.2" go out.
Feedback loop
Before a safety output is switched on, a test is run to establish whether the contacts ahead
of feedback loop input Y6 are closed. If a contact is open, an error is detected and LEDs
CH.1 and CH.2 will flash alternately. It will not be possible to switch the unit back on until
the feedback loop is closed and the safety function has been reset.
The feedback loop contacts are also checked when the signal at the output changes from
high to low. After this signal change, the contacts at the feedback loop input must close
within 150 ms. If a contact is still open after 150 ms has elapsed, an error is detected and is
displayed as a flashing code (1,8) (see Faults – Interference [ 22]). It will not be pos-
sible to switch the unit back on until the error has been rectified and the supply voltage has
been switched off and then on again.
AND/OR connection
The PNOZ e1.1p has two logic inputs S35 (OR) and S36 (AND) for logic connections
between several units.
Operating modes
}Single-channel operation: Input wiring in accordance with EN 60204, no redundancy in
the input circuit; earth faults in the input circuit and start circuit are detected.
}Dual-channel operation: Redundant input circuit; earth faults in the input circuit and
start circuit are detected, with or without detection of shorts between the pushbutton
contacts.
}Automatic start: Unit is active once the input circuit has been closed.
}Monitored start: Unit is not active until the start button has been operated and then re-
leased.
}The start-up test prevents automatic restarting after a power failure and subsequent re-
turn of voltage. The unit checks whether the input circuit is opened and then closed
when supply voltage is applied.
}Increase in the number of available contacts by connecting contact expander modules
or external contactors/relays.
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21238-EN-06 10
Selecting sensors
When selecting sensors, you must comply with the technical details of the input circuits on
the PNOZelog units.
Please note:
}Sensors with mechanical contacts can be used in operating modes with or without de-
tection of shorts across contacts, provided you comply with the technical details
provided by the manufacturer. It is not always possible to use sensors with semicon-
ductor outputs when operating with detection of shorts across contacts.
}Sensors with pulsed semiconductor outputs are only permitted if the PNOZelog is oper-
ated without detection of shorts across contacts.
Installation
CAUTION!
Electrostatic discharge can damage components on the safety system!
Ensure against discharge before touching the safety system, e.g. by touch-
ing an earthed, conductive surface or by wearing an earthed armband.
}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).
NOTICE
If you are connecting several units logically, please note the guidelines in
the section entitled Logic connection between several units [ 15].
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