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

Contents
Operating Manual PNOZ e1.1p
21238-EN-06 4
Remove plug-in terminals 31
Order reference 31
Product 31
Accessories 31

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 EN60947-5-1, EN60204-1 and VDE0113‑1
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.

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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).

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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

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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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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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21238-EN-06 11
Wiring
Please note:
}Information given in the "Technical details [ 27]" 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 [ 27])
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.
}Safety outputs 14 and 24 should exclusively be used for safe applications.
}The safety outputs must not be connected to control inputs.
}To suppress the pulse on switching off at safety outputs 14 and 24, use the terminal
block with filter (see Order reference [ 31]).
}You must comply with the idling capacity at safety outputs 14 and 24 (see Technical
details [ 27]).
}Do not connect undesignated terminals.
}Output Y32 is an auxiliary output, e.g. for communication with a PLC or text display.
}Auxiliary output Y32 shouldnot be used for safety circuits!
}Only contactors with positive-guided contacts should be used for safety functions.
}Use freewheel diodes to drive inductive loads (e.g. contactors or relays) with the safety/
auxiliary outputs.
}When connecting magnetically operated, reed proximity switches, ensure that the max.
peak inrush current (on the input circuit) does not overload the proximity switch.
}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.
}Terminal Y5 is provided for Pilz-internal diagnostic purposes.

PNOZ e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 12
Preparing for operation
Supply voltage
Supply voltage AC DC
A1
F1
A2
L+
L-
Input circuit
Connect the N/C contact from the trigger element (e.g. E-STOP) to the input circuit.
The table describes how the input circuit is wired when the unit is used individually (without
logic input). If units are linked together logically, Y4 must be wired as described in the table
in the section entitled "Logic connection between several units [ 16]".
Input circuit Single-channel Dual-channel
E-STOP
without detection of shorts
across contacts
E-STOP
with detection of shorts
across contacts
Safety gate
without detection of shorts
across contacts
Y4
S11
A1
S12
S22
Y4
S11 S12
S22
A1
Safety gate
with detection of shorts
across contacts
S11
S12
S21
S22
Y4
S21S21
Light guard or safety switch,
detection of shorts across
contacts via ESPE
A1
A2 S12
S22
24 V DC
GND
Y4
S11
The E-STOP pushbutton and safety gate switch symbolise a trigger element with N/C / N/C
combination.

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Operating Manual PNOZ e1.1p
21238-EN-06 13
Start circuit
The unit can be started automatically or manually with monitoring.
With an automatic start, an operating mode with start-up test can also be selected.
}The start circuit should be connected as described in the table.
Start circuit Automatic start Monitored start
Safety gate without start-up
test
E-STOP wiring
Safety gate with start-up test
NOTICE
With automatic start
The unit starts up automatically when the safeguard is reset, e.g. when the
E-STOP pushbutton is released. Use external circuit measures to prevent
an unexpected restart.
Feedback loop
Contacts from external contactors can be connected between Y6 and A1.
}Feedback loop unconnected:
If you do not wish to connect any contacts to the feedback loop, Y6 must be connected
to A1.
CAUTION!
Do not connect the contacts from external contactors in series to the start
circuit.

PNOZ e1.1p
Operating Manual PNOZ e1.1p
21238-EN-06 14
Example
The positive-guided contacts of contactors K1 and K2 control the feedback loop

PNOZ e1.1p
Operating Manual PNOZ e1.1p
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Logic connection between several units
Units from the PNOZelog product range can be logically connected to each other and to
units from the PNOZmulti product range. On the PNOZelog, input S35 is intended for the
logic OR connection and input S36 for the logic AND connection. Safety outputs 14 and 24
on the PNOZelog are suitable for logic connections.
When linking several units logically, please note:
}When PNOZelog units are linked logically to each other, a safety output from a
PNOZelog unit may be connected to logic inputs from one or more PNOZelog units.
}When linking PNOZelog units logically to PNOZmulti units
– a cascading output from PNOZmulti units may be connected to logic inputs on
PNOZelog units
or
– a safety output from PNOZelog units may be connected to cascading inputs on
PNOZmulti units.
}The unit with the lowest SIL/PL value determines the SIL/PL value of the entire circuit.
}PNOZ e1p, PNOZ e8.1p: These units do not have logic inputs. Their safety outputs can
be used to logically link the units to the logic inputs of other PNOZelog units or to the
cascading inputs from PNOZmulti units.
}Safety outputs from the PNOZ e1p are suitable for logic connections from unit version
3.0.
}Each safety output on a PNOZelog unit that is connected to the load may also be con-
nected to the logic inputs of a maximum of four PNOZelog units (Example 1 [ 18]).
}Up to 50 logic inputs from PNOZelog units can be connected to safety outputs with no
load.
}Logically linking the units leads to delays when switching on and off (see on-delay and
response time in the Technical details [ 27]). These are added up with each unit
that is logically linked (Example 3 [ 20]).
}Install all the logically linked units in the same control cabinet or ensure that faults re-
garding the units' connection are excluded, e.g. via protected installation of the connec-
tion cables.
}All linked units must be connected to the same supply voltage.

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Operating Manual PNOZ e1.1p
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Logic input S35 and S36
The logic inputs are connected to each other as follows:
Input circuit
Safety outputs
Logic inputs S35 and S36 from the PNOZ e1.1p enable additional PNOZelog or PNOZmulti
units to be logically AND/OR connected.
Input circuit Logic AND + OR
connection
Logic AND connec-
tion
Logic OR connec-
tion
without detection of
shorts across con-
tacts
Y4
S36
S35
14/24
14/24
PNOZ e1.1p
Unit 1
Unit 2
AND
OR
A1
*1
Y4
S36
14/24
PNOZ e1.1p
Unit 1
AND
A1
*1
Y4
S35
14/24
PNOZ e1.1p
Unit 1
OR
S11
with detection of
shorts across con-
tacts
Y4
S36
S35
14/24
14/24
PNOZ e1.1p
Unit 1
Unit 2
AND
OR
*1
Y4
S36
14/24
PNOZ e1.1p
Unit 1
AND
*1
Y4
S35
14/24
PNOZ e1.1p
Unit 1
OR
S21
∗1 Where units are linked logically, Y4 must be wired as shown here (differs from the por-
trayal on the input circuit).

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Examples
WARNING!
Muting the safety function
A valid signal at the OR input of a PNOZelog unit mutes its safety function
and can lead to the most serious injuries and death.
– Before using the OR function, carry out a risk analysis and use other
measures to establish a safe condition.
The following examples represent various ways in which PNOZelog units can be logically
connected. In all the application examples, 2 loads may also be connected to the safety
outputs.

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Operating Manual PNOZ e1.1p
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}Example 1:
Loads are connected to the safety outputs of Unit 1. In addition, a safety output is AND-
linked to 4 other PNOZelog units via the logic input S36.
14

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21238-EN-06 19
}Example 2:
Loads are connected to the safety outputs of Unit 1. In addition, a safety output is AND-
linked to another PNOZelog unit via the logic input S36.

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21238-EN-06 20
}Example 3
The logic connection line between Unit 1 and Unit 2 contains contacts from the external
contactors on Unit 4. This means that Unit 4 and Unit 1 can set the outputs on Unit 2 and
Unit 3 to low.
A short circuit between +24 VDC and a safety output must be excluded!
K5 K6 K3 K4
K7 K8
K7
K1 K2
K8