Pilz PSS u2 ES 8DI User manual

PSS u2 ES 8DI
Operating Manual-1003610-EN-01
}Control system PSS u2
}Remote I/O system PSS u2

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 PSS u2 ES 8DI
1003610-EN-01 3
Section 1 Introduction 4
1.1 Validity of documentation 4
1.1.1 Retaining the documentation 4
1.2 Definition of symbols 4
Section 2 Overview 6
2.1 Module features 6
Section 3 Safety 7
3.1 Intended use 7
3.2 System requirements 7
3.3 Safety regulations 7
3.3.1 Use of qualified personnel 7
3.3.2 Warranty and liability 8
3.3.3 Disposal 8
Section 4 Function description 9
4.1 Block diagram 9
4.2 Supply 9
4.3 Inputs 9
4.4 Reaction times 13
4.5 Energy-saving functions 13
Section 5 Address assignment 14
Section 6 Installation 15
6.1 General installation guidelines 15
6.1.1 Dimensions 15
6.2 Inserting and removing an electronic module 16
6.2.1 Inserting an electronic module 16
6.2.2 Removing an electronic module 18
6.2.3 Changing an electronic module during operation 18
Section 7 Wiring 19
7.1 General wiring guidelines 19
7.1.1 Connection mechanism for terminal blocks 19
7.2 Terminal configuration 20
Section 8 Operation 21
8.1 Display elements and messages 21
Section 9 Technical details 23
Section 10 Order reference 25
10.1 Product 25
10.2 Accessories 25

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 8DI. It is valid until new documenta-
tion is published.
1.1.1 Retaining the documentation
This documentation is intended for instruction and should be retained for future reference.
1.2 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
Using the product PSS u2 ES 8DI:
Electronic module with digital inputs for standard applications
The product has the following features:
}8 type 3 digital inputs in accordance with IEC 61131-2
}Configurable input filter time: 0 … 10.0 [ms]
}Configurable pulse stretching: 0 … 255 [ms]
}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 8DI 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).
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 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.

Safety
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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
I0
1
I2
5
I4
9
I6
13
Module
Supply
Data
(ST)
Periphery
Supply
+24 V DC
Module Bus
I1
3
I3
7
I5
11
I7
15
Input Input InputInput
Fig.: Block diagram PSS u2 ES 8DI
4.2 Supply
}The module supply provides the module with voltage.
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
}The module detects any signals that are present at the input for longer than the min-
imum signal time tsignal_min.
tsignal_min= tfilter + tProcIM
tProcIM: Input processing time (see Technical details [ 23]).
}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

Function description
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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
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.

Function description
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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
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

Function description
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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
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

Function description
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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
4.4 Reaction times
You can find information about the reaction times in the operating manual for the head
module PSSu2P0 F/S PN.
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 of inputs.
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 Input data I4
Bit 5 Input data I5
Bit 6 Input data I6
Bit 7 Input data I7

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
removed 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. Press 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. Press the terminal
block downwards until
you hear it click into
place.

Installation
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6.2.2 Removing an electronic module
1. Remove the terminal
block
2. Press the release [1]
and remove the elec-
tronic module
[1]
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.
A new electronic module can be inserted during operation.
Effects:
}Module bus communication between the other modules is not interrupted.
}The head module may need to be configured and restarted in order for the new module
to be detected.

Wiring
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7 Wiring
7.1 General wiring guidelines
Please note:
}Signal lines do not have to be shielded.
}Use copper wiring.
7.1.1 Connection mechanism for terminal blocks
Procedure:
}Use a flat head screwdriver.
}Strip the wire back 9 mm.
}Feed the stripped cable as far as it will go into the opening for the spring-loaded ter-
minal.
}Check that the cable is firmly seated.
Please note:
}The minimum cable cross section for field connection terminals on the terminal blocks
is 0.15mm2 (AWG26).
}The maximum cable cross section for field connection terminals on the terminal blocks
is 1.5mm2 with ferrules (AWG14)
}Use copper wiring.

Wiring
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7.2 Terminal configuration
Terminal configuration Connection example
1: Input I0
3: Input I1
5: Input I2
7: Input I3
9: Input I4
11: Input I5
13: Input I6
15: Input I7
1-channel sensor
Sensors supplied via the +24 V periphery supply
from the module PSSu2 ES 8PTD 24V 0V
I0
24 V
ES 8DI ES 8PTD 24V 0V
1
3
5
7
9
1
3
1
5
11
16