Pilz PNOZ e2.2p Manuale utente
PNOZ e2.2p
Operating Manual-21360-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 e2.2p
21360-EN-06 3
Introduction 5
Validity of documentation 5
Using the documentation 5
Definition of symbols 5
Safety 6
Intended use 6
Safety regulations 7
Safety assessment 7
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
Installation 10
Wiring 10
Preparing for operation 11
Supply voltage 11
Input circuit 11
Feedback loop 12
Logic connection between several units 13
Logic inputs S35 and S36 14
Examples 14
Operation 19
Status indicators 19
Faults - malfunctions 20
Dimensions in mm 25
Technical details 25
Safety characteristic data 28
PNOZ e2.2p
Operating Manual PNOZ e2.2p
21360-EN-06 5
Introduction
Validity of documentation
This documentation is valid for the product PNOZ e2.2p. 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 e2.2p
Operating Manual PNOZ e2.2p
21360-EN-06 6
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The two-hand control device PNOZ e2.2p meets the requirements of EN574 Type III A.
CAUTION!
The two-hand control device PNOZ e2.2p may not be used on press con-
trollers. For these we recommend the PNOZ e2.1p. It is only suitable for use
where the risk analysis has established a low level of risk (e.g. EN ISO
13849-1 Cat. 1).
The two-hand control device is used as a Type III A hand protection device on plant and
machinery, in accordance with EN 574. The unit forces the operator to keep his hands out
of the danger zone during dangerous movements. The unit is designed for use in two-hand
circuits. Please note the type of two-hand circuit as stated in the relevant C standard.
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 [ 25]).
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.
PNOZ e2.2p
Operating Manual PNOZ e2.2p
21360-EN-06 7
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.
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).
PNOZ e2.2p
Operating Manual PNOZ e2.2p
21360-EN-06 8
Unit features
}Outputs using semiconductor technology:
– 2 safety outputs
– 1 auxiliary output
– 2 test pulse outputs
}Application: Two-hand monitoring
}LED display for:
– Supply voltage
– Switch state of safety outputs
}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
S14 S24 S35 S36 Y6 Y7
Y5 S13 S23 14 24Y32
A1 A2
PNOZ e2.2p
Operating Manual PNOZ e2.2p
21360-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 loops
are closed.
The two-hand control device is activated by simultaneously pressing two pushbuttons. It in-
terrupts the control command for the hazardous movement when one or both pushbuttons
are released. The movement can only be restarted when both pushbuttons have returned
to their start position (released) and are operated again.
}Both pushbuttons have been operated simultaneously, i.e. within 0.5 s:
– There are high signals at safety outputs 14 and 24 and auxiliary output Y32
– The LEDs "CH.1" and "CH.2" are lit.
}One pushbutton has been released following simultaneous operation:
– There are low signals at safety outputs 14 and 24 and auxiliary output Y32.
– The LEDs "CH.1" and "CH.2" go out.
}There are also low signals at safety outputs 14 and 24 and auxiliary output Y32 when:
– Only one control element is pressed,
– Simultaneity is not upheld,
– The feedback control loop is still open.
}The safety outputs will not return to a high signal until both control elements are re-
leased and then re-operated simultaneously.
Feedback loop
Before a safety output is switched on, a test is run to establish whether the contacts at
feedback loop inputs Y6 and Y7 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 loops are 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 inputs 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 - malfunctions [ 20]). It will not be possible
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 e2.2p has two logic inputs S35 (OR) and S36 (AND) for logic connections
between several units.
Operating modes
}Automatic start: Unit is active once the input circuit has been closed within the simultan-
eity period.
}Increase in the number of available contacts by connecting contact expander modules
or external contactors/relays.
PNOZ e2.2p
Operating Manual PNOZ e2.2p
21360-EN-06 10
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 (35 mm).
}When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).
NOTICE
The distance of the pushbutton on the two-hand control device from the
nearest danger zone must be large enough so that if one of the pushbuttons
is released, the hazardous movement is interrupted before the operator
reaches the danger zone or can reach into the danger zone (see EN 999
"Hand-arm speed").
NOTICE
If you are connecting several units logically, please note the guidelines in
the section entitled Logic connection between several units [ 13].
Wiring
Please note:
}Information given in the "Technical details [ 25]" must be followed.
}Use copper wire that can withstand 60/75°C.
}Calculation of the max. cable length lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 25])
Rl/km = cable resistance/km
}Cables that have to be laid outside the control cabinet must be protected from mechan-
ical damage, e.g. by installing them in a conduit.
}The unit and the input circuits must always be supplied by a single power supply.
}The connection cables between the PNOZ e2.2p and the pushbuttons should not be
laid directly next to power cables, otherwise inductive and capacitive interference coup-
ling can result.
}Safety outputs 14 and 24 should exclusively be used for safe applications.
}The safety outputs must not be connected to control inputs.
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