Pilz PSS u2 ES 4DI User manual

PSS u2 ES 4DI
Operating Manual-1003609-EN-03
}Control system PSS u2
}Remote I/O system PSS u2

Preface
This document is the original document.
Where unavoidable, for reasons of readability, the masculine form has been selected when
formulating this document. We do assure you that all persons are regarded without discrim-
ination and on an equal basis.
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.
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 ............................................................................................................................ 4
1.1 Validity of documentation.......................................................................................................... 4
1.2 Using the documentation .......................................................................................................... 4
1.3 Definition of symbols................................................................................................................. 4
2 Overview ................................................................................................................................. 6
2.1 Module features ........................................................................................................................ 6
3 Safety ...................................................................................................................................... 7
3.1 Intended use ............................................................................................................................. 7
3.2 System requirements................................................................................................................ 7
3.3 Safety regulations ..................................................................................................................... 8
3.3.1 Use of qualified personnel ........................................................................................................ 8
3.3.2 Warranty and liability ................................................................................................................ 8
3.3.3 Disposal .................................................................................................................................... 8
4 Function description ............................................................................................................. 9
4.1 Block diagram ........................................................................................................................... 9
4.2 Supply....................................................................................................................................... 9
4.3 Inputs ........................................................................................................................................ 9
4.4 Reaction times .......................................................................................................................... 14
4.5 Energy-saving functions ........................................................................................................... 14
5 Address assignment ............................................................................................................. 15
6 Installation .............................................................................................................................. 16
6.1 General installation guidelines.................................................................................................. 16
6.1.1 Dimensions ............................................................................................................................... 16
6.2 Inserting and removing an electronic module ........................................................................... 17
6.2.1 Inserting an electronic module.................................................................................................. 17
6.2.2 Removing an electronic module ............................................................................................... 19
6.2.3 Changing an electronic module during operation ..................................................................... 20
7 Wiring ...................................................................................................................................... 21
7.1 General wiring guidelines ......................................................................................................... 21
7.1.1 Connection mechanism for terminal blocks .............................................................................. 21
7.2 Terminal configuration .............................................................................................................. 21
8 Operation ................................................................................................................................ 22
8.1 Display elements and messages .............................................................................................. 22
9 Technical details .................................................................................................................... 24
10 Order reference ...................................................................................................................... 26
10.1 Product ..................................................................................................................................... 26
10.2 Accessories .............................................................................................................................. 26

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 ES 4DI hardware version 01 or higher.
It is valid until new documentation 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 module carrier
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 ES 4DI:
Electronic module with digital inputs for standard applications
The product has the following features:
}4 type 3 digital inputs in accordance with IEC 61131-2
}Configurable input filter time: 0 … 25.5 [ms]
}Configurable pulse stretching: 0 … 255 [ms]
}4 outputs with constant voltage (periphery supply)
}Energy-saving functions
}LEDs for:
– Status of inputs
– Module error
– Operating status

Safety
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3 Safety
3.1 Intended use
The module provides standard type 3 inputs in accordance with IEC61131-2 and may be
used for standard applications in the PSS u2 system.
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 ES 4DI may be used in conjunction with the following terminal block:
}8-pin terminal block
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).

Safety
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3.3 Safety regulations
3.3.1 Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by persons who are competent to do so.
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.
3.3.2 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.).
3.3.3 Disposal
}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
3
24 V
1
I0
5
I1
9
I2
13
I3
7
24 V
15
24 V
11
24 V
Module
Supply
Data
(ST)
Periphery
Supply
+24 V DC
Module Bus
Input
Periphery
Supply
Input Input Input
Fig.: Block diagram PSS u2 ES 4DI
4.2 Supply
}The module is supplied with voltage via the head module.
Periphery supply
}The module routes the periphery supply from the module bus to the terminal block.
}The periphery supply is used to supply the sensors.
}The module does not switch the periphery supply.
}The periphery supply has no current limitation.
4.3 Inputs
}The status of the inputs is signalled to the head module via the module bus.
}The inputs are fitted with a configurable software filter.
}Pulse stretching can be configured for the inputs.
}Any signals that are shorter than the signal suppression time tpulse_sup are filtered out. The
signal suppression time depends on the configured software filter time.
tpulse_sup= tfilter – 300 µs

Function description
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}The module detects any signals that are present at the input for longer than the minimum
signal time tsignal_min.
tsignal_min= tfilter + tProcIM
tProcIM: Input processing time (see Technical details [ 24]).
}A signal is always detected and signalled to the head module's PII if it is present for
longer than the sum of the following times:
– Minimum signal time tsignal_min
– ST scan time
Clamp
Module
tsignal_min
Fig.: Software filter
Legend
Clamp Signal at the terminal
Module Filtered signal in the module
tsignal_min Time for which a signal must be present at the input in order to be de-
tected

Function description
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Pulse stretching:
The module stretches a 1-signal or 0-signal at the input terminals to the configured pulse
stretch time tstretch. If the signal is longer than the pulse stretch time, then it is not stretched
any further.
Signal requirements at the terminals:
The 0-signal and the subsequent 1-signal together must be present at the input for longer
than twice the configured pulse stretch time tstretch.
Initialise position
0-signal in the module 1-signal in the module
1-signal stretching
0-signal in the module
0-signal stretching
0-signal in the module
Waiting for 1-signal
1-signal in the module
Waiting for 0-signal
0-signal at the terminal
after pulse stretching has
elapsed
Pulse stretching active
0-signal at the terminal
1-signal at the terminal
1-signal at the terminal starts
pulse stretching
0-signal at the terminal
starts pulse stretching
1-signal at the terminal
after pulse stretching has
elapsed
1-signal at the terminal
after pulse stretching has
elapsed
0-signal at the terminal
after pulse stretching has
elapsed
Fig.: States for pulse stretching

Function description
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stretch
lstretch
l
Clamp
Pulse
stretching
Stretched
signal
1-signal
l
stretch
l
FALSE
l
TRUE
l
0-signal
l
1-signal
l
lsignal_min lsignal_min
Fig.: Timing diagram: pulse stretching > signal duration of 1-signal
Legend
Clamp Signal at the terminal
Pulse stretching Pulse stretching
Stretched signal Stretched signal
t1-signal Duration of 1-signal
tstretch Duration of pulse stretching
tsignal_min Time for which a signal must be present at the input in order to be de-
tected
tTRUE Stretched 1-signal in the module
tFALSE Stretched 0-signal in the module
stretch
lstretch
l
TRUE
lFALSE
l
Clamp
Pulse
stretching
Stretched
signal
1-signal
l0-signal
l
lsignal_min lsignal_min
Fig.: Timing diagram: pulse stretching ≤ signal duration of 1-signal
Legend
Clamp Signal at the terminal
Pulse stretching Pulse stretching
Stretched signal Stretched signal
t1-signal Duration of 1-signal
tstretch Duration of pulse stretching

Function description
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tsignal_min Time for which a signal must be present at the input in order to be de-
tected
tTRUE Stretched 1-signal in the module
tFALSE Stretched 0-signal in the module
0-signal
l
stretch
lstretch
l
TRUE
l
Clamp
Pulse
stretching
Stretched
signal
1-signal
l
FALSE
l
lsignal_min lsignal_min
Fig.: Timing diagram: pulse stretching with variable signal duration
Legend
Clamp Signal at the terminal
Pulse stretching Pulse stretching
Stretched signal Stretched signal
t1-signal Duration of 1-signal
tstretch Duration of pulse stretching
tsignal_min Time for which a signal must be present at the input in order to be de-
tected
tTRUE Stretched 1-signal in the module
tFALSE Stretched 0-signal in the module
Grey shaded
area
Signals that are not detected during stretching

Function description
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4.4 Reaction times
Detailed information on the reaction times is available in the operating manual of the head
modules.
4.5 Energy-saving functions
The energy-saving levels are controlled by the head module and are not configurable. The
module supports the following energy-saving levels:
}Switching off the LEDs
The LEDs have two energy-saving levels:
– Switching off the LEDs to display the terminal status
– Switching off the LEDs to display the module and terminal status
}Standby mode
– All module functions are inactive.
– The LEDs for displaying the module and terminal status are switched off.

Address assignment
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5 Address assignment
The module occupies 1 Byte in the process image.
PII Meaning State
Bit 0 Input data I0 0: "0"-signal (0 V) at the input
1: "1"-signal (+ 24 V) at the input
Bit 1 Input data I1
Bit 2 Input data I2
Bit 3 Input data I3
Bit 4-7 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
The dimensions include the backplane, electronic module and terminal block.
12,5
50,1
54.4
88,37
6
51,1 60
111,1
(95.3)
51,7
Fig.: Dimensions in mm, including backplane, electronic module and terminal block

Installation
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6.2 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.
6.2.1 Inserting an electronic module
1. Insert the electronic
module into the suspen-
sion lug on the back-
plane.
2. Swivel the electronic
module downwards until
you hear it click into
place.

Installation
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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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6.2.2 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 forward.
2. Press the unlocking
mechanism that is
shown by the arrow and
pull off the electronic
module upwards.

Installation
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6.2.3 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 [ 19]
2. Inserting an electronic module [ 17]
A new electronic module can be inserted during operation.
Procedure:
}Inserting an electronic module [ 17]
Effects:
}Module bus communication between the other modules is not interrupted.
}To detect the new module the following steps can be necessary:
– Creating a new configuration or changing an existing configuration
– Download of the configuration to the head module
– Restart of the head module. After a restart, the system behaves as after a warm reset
using a reset pushbutton (see operating manual of the head module, chapter “Reset
pusbutton", section "Carrying out a warm reset (restart)").