Pilz PSS u2 EF 2DO R 8A User manual

PSS u2 EF 2DO R 8A
Operating Manual-1003625-EN-03
}Control system PSS u2
}Remote I/O system PSS u2

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
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1 Introduction ............................................................................................................................5
1.1 Validity of documentation.......................................................................................................... 5
1.2 Using the documentation .......................................................................................................... 5
1.3 Definition of symbols................................................................................................................. 5
2 Overview .................................................................................................................................7
2.1 Module features ........................................................................................................................ 7
3 Safety ...................................................................................................................................... 8
3.1 Intended use ............................................................................................................................. 8
3.2 System requirements................................................................................................................ 9
3.3 Safety regulations ..................................................................................................................... 9
3.3.1 Safety assessment ................................................................................................................... 9
3.3.2 Use of qualified personnel ........................................................................................................ 9
3.3.3 Warranty and liability ................................................................................................................ 9
3.3.4 Disposal .................................................................................................................................... 10
4 Function description ............................................................................................................. 11
4.1 Block diagram ........................................................................................................................... 11
4.2 Supply....................................................................................................................................... 11
4.3 Outputs ..................................................................................................................................... 11
4.4 Integrated protection mechanisms............................................................................................ 13
4.5 Reaction times .......................................................................................................................... 13
4.6 Energy-saving functions ........................................................................................................... 14
5 Address assignment ............................................................................................................. 15
6 Installation ..............................................................................................................................16
6.1 General installation guidelines.................................................................................................. 16
6.1.1 Dimensions ............................................................................................................................... 16
6.2 Protective coding on terminal block .......................................................................................... 16
6.3 Inserting and removing an electronic module ........................................................................... 18
6.3.1 Inserting an electronic module.................................................................................................. 18
6.3.2 Removing an electronic module ............................................................................................... 20
6.3.3 Changing an electronic module during operation ..................................................................... 20
7 Wiring ......................................................................................................................................22
7.1 General wiring guidelines ......................................................................................................... 22
7.1.1 Connection mechanism for terminal blocks .............................................................................. 22
7.2 Terminal configuration .............................................................................................................. 23
7.3 Function test during commissioning ......................................................................................... 23
8 Operation ................................................................................................................................24
8.1 Display elements and messages .............................................................................................. 24
9 Technical Details ...................................................................................................................26
9.1 Service life graphs .................................................................................................................... 28
9.2 Safety characteristic data ......................................................................................................... 29

Contents
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10 Order reference ......................................................................................................................31
10.1 Product ..................................................................................................................................... 31
10.2 Accessories .............................................................................................................................. 31

Introduction
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1 Introduction
1.1 Validity of documentation
This operating manual explains the function and operation, describes the installation and
provides guidelines on how to connect the product.
This documentation is valid for the product PSS u2 EF 2DO R 8A. It is valid until new docu-
mentation is published.
1.2 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.
Please refer to the PSS u2 Installation Manual.
1.3 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.

Introduction
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INFORMATION
This gives advice on applications and provides information on special fea-
tures.

Overview
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2 Overview
Module structure:
A module consists of
}An electronic module
}A terminal block with cage clamp terminals and
}A backplane
The electronic modules are plugged into the backplane and determine the function. The
backplane is used for communication between the head module and the electronic modules
and forms the carrier unit for the electronic modules. The terminal block is plugged into the
electronic modules and is used to connect the field wiring.
Details of the terminal blocks that can be used are available under "Intended Use".
2.1 Module features
Application of the product PSS u2 EF 2DO R 8A:
Electronic module with monitored relay outputs for failsafe applications
The product has the following features:
}Relay contacts with reading back the relay contacts
– N/O contact
– Volt-free
– Current load capacity per output: 10 A
– Configurable switch-off delay
}Energy-saving functions
}LEDs for:
– Switch status of each output
– Module error

Safety
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3 Safety
3.1 Intended use
The module provides failsafe outputs and may be used for failsafe applications in the PSS
u2 system.
The module meets the requirements of ENIEC61508 up to SIL 3 and ENISO13849-1 up
to PLe.
The outputs may be used to switch:
}Resistive loads
}Inductive loads
The module can be used in furnaces. If the module's relay outputs shut down the entire fuel
supply and the furnace is used in continuous operation, appropriate external measures
must be used to establish diversity of the shutdown elements (requirement of EN 50156-1).
For example, an appropriate measure may be an additional, monitored switching element
(contactor or relay), which is controlled by a safe semiconductor output and is switched in
series with both relay outputs.
The programmable safety system should be installed in a protected environment that meets
at least the requirements of pollution degree 2. Example: Protected inside space or control
cabinet with protection class IP54.
Make sure that only authorised personnel have access to the programmable safety system.
WARNING!
Risk of electric shock with overvoltage category III!
If you use the head module PSS u2 P0 F/S PN with the terminal block order
no. 328 830, contact with live components could cause life-threatening injur-
ies when voltage is applied.
In applications with overvoltage category III, the head module
PSS u2 P0 F/S PN should only be used with terminal block order no.
328 831.
Intended use includes making the electrical installation EMC-compliant. The module is de-
signed for use in an industrial environment. Interference may occur if used in other areas.
The following is deemed improper use in particular
}Any component, technical or electrical modification to the module,
}Use of the module outside the areas described in this manual,
}Any use of the module that is not in accordance with the technical details.
The module PSS u2 EF 2DO R 8A may be used in conjunction with the following terminal
block:
}8-pin terminal block

Safety
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3.2 System requirements
INFORMATION
The module is supported by
}PASconfig from version 1.0.0
– We recommend that you always use the latest version (download
from www.pilz.com).
3.3 Safety regulations
3.3.1 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.
3.3.2 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 prevention,
}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 specific
application.
3.3.3 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.).

Safety
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3.3.4 Disposal
}In safety-related applications, please comply with the mission time TM in the safety-related
characteristic data.
}When decommissioning, please comply with local regulations regarding the disposal of
electronic devices (e.g. Electrical and Electronic Equipment Act).

Function description
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4 Function description
4.1 Block diagram
1
O0.13
K0
3
P0
5
O0.14
7
P0
9
O1.13
11
P1
13
O1.14
15
P1
K1
Module
Supply
Data
(FS)
Periphery
Supply
+24 V DC
Module Bus
Fig.: Block diagram PSS u2 EF 2DO R 8A
4.2 Supply
}The module is supplied with voltage via the head module.
4.3 Outputs
Outputs
}The head module sets the output status via the module bus.
}The relationship between the load current and the operating temperature is illustrated in
the following derating diagram. The operating point should be below the characteristic
curve.

Function description
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20
40
80
100
0
1 2 3 4 5 6 7 8 9 10 I [A]
T[°C]
55
Fig.: Derating for the permitted ambient temperature T dependent on load current!
Switch-off delay
FS outputs can be switched off with a delay. Even if the process image of outputs switches
from "1" to "0", a "1" signal may remain at the output for the duration of the delay. If there is
another "1" signal during the switch-off delay, the switch-off delay time is reset again and
restarts at the next "0" signal.
In the event of external errors, e.g. if the connection to the controller is lost, the output is
switched off after the set switch-off delay.
However, in the event of internal module errors, the switch-off delay cannot be guaranteed.
Default value: 0 ms (immediate shutdown).
tdelay
t
PAA
Clamp
1
0
0
1
tdelay
Fig.: Switch-off delay
Legend
PIO Process image of outputs
tdelay Configured switch-off delay time
If there is another "1" signal, the time is reset and restarts
at the next "0" signal
Clamp Signal at the terminal

Function description
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4.4 Integrated protection mechanisms
The module has the following protection mechanisms:
}1monitored relay contact per output
}Protective separation between both relay contacts (see Technical details [ 26])
}Protective separation between both relay contacts and the periphery supply as well as
the module supply, in accordance with DINVDE0110 overvoltage category III in a pro-
tected industrial network
}Temperature monitoring
The module provides the following diagnostic data:
}Start-up error
}Configuration error
}FS communication error
}Temperature error: too warm
}Temperature error: too hot
}Relay control error
}Relay error
4.5 Reaction times
You can find information about the reaction times in the operating manual for the head
module PSSu2P0 F/S PN.

Function description
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4.6 Energy-saving functions
The energy levels are supported by the head module and are not configurable. The module
supports the following energy levels:
– Switching off the LEDs that display the module and terminal status
– Switching off the LEDs that display the terminal status

Address assignment
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5 Address assignment
The module occupies 1 Byte in the process image of outputs.
PIO Meaning State
Bit 0 Output data O0 0: Safety contacts are opened
1: Safety contacts are closed
Bit 1 Output data O1
Bit 2-7 None Constant "0"
The module occupies 1 Byte in the process image of inputs:
PII Meaning State
Bit 0 Valid bit of output O0 0: Output error
1: The signal in the PIO corresponds to the
output signal
Bit 1 Valid bit of output O1
Bit 2-7 None Constant "0"

Installation
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6 Installation
6.1 General installation guidelines
NOTICE
Damage due to electrostatic discharge!
Electrostatic discharge can damage components. Ensure against discharge
before touching the product, e.g. by touching an earthed, conductive sur-
face or by wearing an earthed armband.
6.1.1 Dimensions
88,37
6
51,1 60
111,1
(95.3)
54.4
50.1
51.7
25
Fig.: Dimensions in mm, including backplane, electronic module and terminal block
6.2 Protective coding on terminal block
If voltages over 50 VAC or 120 VDC are connected to a module's switch contacts, then pro-
tective coding must be used. Protective coding prevents the terminal block from being
plugged into another module.

Installation
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1. Insert the protective
coding into the 8-pin ter-
minal block
2. The protective coding
must be visible on the
terminal side
3. Rotate the protective
coding until is embed-
ded within the terminal
block.
4. Plug the coded ter-
minal block into the
module.

Installation
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6.3 Inserting and removing an electronic module
Please note:
}Backplane must be installed first.
}Electronic modules may only be plugged or unplugged if the terminal block has been re-
moved first.
}The mechanics of the electronic modules are designed for 20 plug in/out cycles.
}On electronic modules with outputs, the terminal block may only be inserted and removed
when the load is switched off. Unforeseeable error reactions may be triggered if modules
are inserted and removed under load.
6.3.1 Inserting an electronic module
1. Insert the electronic
module into the suspen-
sion lug on the back-
plane.

Installation
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2. Swivel the electronic
module downwards until
you hear it click into
place.
3. Insert the terminal
block into the suspen-
sion lug on the module.
4. Swivel the terminal
block upwards until you
hear it click into place.

Installation
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6.3.2 Removing an electronic module
1. Press the unlocking
mechanism on the ter-
minal block that is
shown by the arrow and
pull off the terminal
block upwards.
2. Press the unlocking
mechanism that is
shown by the arrow and
pull off the electronic
module upwards.
6.3.3 Changing an electronic module during operation
An electronic module can be hot swapped.
Effects:
}Module bus communication between the other modules is not interrupted.
}The configuration data is retained.
}The module is detected automatically as soon as the module is re-inserted.
Procedure:
1. Removing an electronic module
2. Inserting an electronic module
A new electronic module can be inserted during operation.