Pilz PSSu E S 2AI RTD User manual

PSSu E S 2AI RTD(-T)
Operating Manual 22017-EN-07
}Decentralised system PSSuniversal I/O

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 PSSu E S 2AI RTD(-T)
22017-EN-07 3
Section 1 Introduction 5
1.1 Validity of documentation 5
1.1.1 Retaining the documentation 5
1.1.2 Terminology: System environment A and B 5
1.2 Definition of symbols 6
Section 2 Overview 7
2.1 Module structure 7
2.2 Module features 7
2.3 Front view 8
Section 3 Safety 10
3.1 Intended use 10
3.2 Safety regulations 11
3.2.1 Use of qualified personnel 11
3.2.2 Warranty and liability 11
3.2.3 Disposal 11
Section 4 Function description 12
4.1 Block diagram 12
4.2 Module features 12
4.2.1 Integrated protection mechanisms 12
4.2.2 Functions 12
4.3 Configuration 13
4.3.1 Measuring ranges 13
4.3.2 Connection type 14
4.3.3 Range monitoring 14
4.3.4 Offset for the 2-wire measurement 14
4.3.5 Digital filter 15
4.3.6 Scaling 16
4.3.6.1 ADC raw value 17
4.3.6.2 Manufacturer scaling 17
4.3.6.3 User scaling 17
4.3.6.4 Values that fall outside the range limits 18
4.3.7 Data formats 18
4.3.8 Summary and overview 19
4.3.9 PSSu assignment in system environment A 20
4.3.9.1 Status byte 21
4.3.10 PSSu assignment in system environment B 21
Section 5 Installation 22
5.1 General installation guidelines 22
5.1.1 Dimensions 22
5.2 Installing the base module 23
5.3 Inserting and removing an electronic module 24
5.3.1 Inserting an electronic module 25
5.3.2 Removing an electronic module 26

Contents
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5.3.3 Changing an electronic module during operation 26
Section 6 Wiring 27
6.1 General wiring guidelines 27
6.1.1 Mechanical connection of the base modules 27
6.2 Terminal configuration 29
6.3 Connecting the module 31
Section 7 Operation 33
7.1 Messages 33
7.2 Display elements 33
7.2.1 Display elements for module diagnostics 33
7.2.2 Displaying the input status 34
Section 8 Technical Details 35
Section 9 Order reference 39
9.1 Product 39
9.2 Accessories 39

Introduction
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1 Introduction
1.1 Validity of documentation
This documentation is valid for the products PSSu E S 2AI RTD and PSSu E S 2AI RTD-T.
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.
The module PSSu E S 2AI RTD-T is suitable for use where there are increased environ-
mental requirements (see Technical Details).
1.1.1 Retaining the documentation
This documentation is intended for instruction and should be retained for future reference.
1.1.2 Terminology: System environment A and B
The PSSu system can be used in two different system environments. The module's applic-
ation area is described in the chapter "Intended Use" of the manual.
The distinction is made between
}PSSu in system environment A
}PSSu in system environment B
The distinction is based on the application area of the PSSu system.
PSSu in system environment A may be used in the
}Decentralised system PSSu I/O
}Not in the automation system PSS 4000
PSSu in system environment B may be used in the
}Automation system PSS 4000, e.g. with
– Decentralised system PSSu I/O with SafetyNET p
– Control system PSSu PLC
– Control system PSSu multi

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

Overview
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2 Overview
2.1 Module structure
A module consists of
}Electronic module and
}Base module with
– Screw terminals or
– Cage clamp terminals
The base modules are the carrier units for the electronic modules and are used to connect
the field wiring. The electronic modules are inserted on to the base modules and determine
the module's function.
Details of the base modules that can be used are available in the chapter entitled “Intended
Use”.
2.2 Module features
The product has the following features:
}Analogue ST inputs: 2
}Type of inputs: Resistance thermometer
}Corresponding sensors (configurable):
– Pt100
– Pt200
– Pt500
– Pt1000
– Ni100
– Ni120
– Ni1000
}Resistance measurement (configurable):
– 0 ... 4000 Ohm
}Max. resolution:
– 0.0625 °C
– 0.0625 Ohm
}Open circuit detection
}LEDs for:
– Operating status per input
– Module error
}For standard applications in system environment A and B
}T-type:
PSSu E S 2AI RTD-T: for increased environmental requirements

Overview
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2.3 Front view
PSSu E S
2AI RTD
312490
000000
001
I0 I1
PSSu E S
2AI RTD
11
R0+
12
R0-
13
(C)
14
R1+
15
R1-
16
(C)
21
RL0+
22
RL0-
23
(C)
24
RL1+
25
RL1-
26
(C)
Err
2111
2212
2313
2414
2616
2515
1
3
8
7
4
5
6
12
2
13
A
B
9
11
10
Legend:
}A: Electronic module
}B: Base module
}1: LED for module diagnostics
}2: Labelling strip with:
– Name of electronic module
– Order number
– Serial number
– Hardware version number
– 2D code

Overview
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}3: Labelling strip for the terminal configuration on the base module
}4: Name of electronic module
}5: Connection level 1
}6: Connection level 2
}7: Connection level 3
}8: Connection level 4
}9: Connection level 5
}10: Connection level 6
}11: Square mounting holes (connection levels 1, 2, 3 and 4)
– With screw to loosen/tighten the screw terminal on base modules with screw termin-
als
– With mechanism to operate the cage clamp on base modules with cage clamp ter-
minals
}12: Round connection holes (connection levels 1, 2, 3 and 4) for connecting the signal
lines
}13: Mounting slot for colour marker to label the connection level (connection levels 1, 2,
3 and 4)

Safety
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3 Safety
3.1 Intended use
The module may be used for standard applications in system environment A and B.
The module provides analogue inputs. It may be used as an input module for standard
functions.
The modules PSSu E S 2AI RTD and PSSu E S 2AI RTD-T may be used as a safety com-
ponent in accordance with the Lifts Directive 95/16/EC, EN81-1, EN81-2 and EN115-1.
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 and corresponding air conditioning.
The module PSSu E S 2AI RTD-T is suitable for use where there are increased environ-
mental requirements (see Technical Details).
Intended use includes making the electrical installation EMC-compliant. Please refer to the
guidelines stated in the "PSSuniversal Installation Manual". The module is designed for use
in an industrial environment. It is not suitable for use in a domestic environment, as this can
lead to interference.
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.
INFORMATION
The module is supported by:
}PSSuniversal Configurator and PSSuniversal Assistant from Version
1.6.0
}PAS4000 from version 1.8.0
– We recommend that you always use the latest version (download
from www.pilz.de).
The PSSu E S 2AI RTD module may be used in conjunction with the following base mod-
ules:
}PSSu BP 1/12 S
}PSSu BP 1/12 C
}PSSu BP-C 1/12 S
}PSSu BP-C 1/12 C

Safety
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The module PSSu E S 2AI RTD-T may be used in conjunction with the following base mod-
ules:
}PSSu BP 1/12 S-T
}PSSu BP 1/12 C-T
}PSSu BP-C 1/12 S-T
}PSSu BP-C 1/12 C-T
3.2 Safety regulations
3.2.1 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.
3.2.2 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.).
3.2.3 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).

Function description
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4 Function description
4.1 Block diagram
Module Bus
Periphery
Supply
+ 24 V DC
Module
Supply
+ 5 V DC
Data
(ST)
Input
11 12 21 22
ADC
13 23
(C-Rail)
J
Input
14 15 24 25
J
16 26
(C-Rail)
4.2 Module features
4.2.1 Integrated protection mechanisms
When the PSSuEFPS1(-T) or PSSu E F PS2(-T)(-R) is used to supply the system, the
module supply is buffered for 20ms if the supply voltage is interrupted.
The module detects the following errors:
}Start-up error
}Configuration error
}ST communication error
}Bus termination error
4.2.2 Functions
The module supply provides the module with voltage. The periphery supply provides the
analogue section with voltage.
The input signals are read in and converted into digital signals. The resolution depends on
the configured measuring range. Additional signal processing can be defined using the sys-
tem software (see schematic representation of signal processing). The individual steps are
described in the "Configuration" section.
The input signals are transmitted to the head module via the ST module bus. As an option
the input module can send status information for each input.
All the configuration data is stored in the head module and is assigned to the input module
on restart. This way the configuration data is retained even if you change the input module.

Function description
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Schematic representation of signal processing:
INPUT ADC Filter
Range
monitoring
Data
format
ST
module
bus
Manufact.
scaling
User
scaling
Lineari-
sation
4.3 Configuration
The following options exist for configuring the module in system environment A:
}Via a fieldbus without the modular device description file
Without the modular device description file it is only possible to configure the input or
output range. All other configuration details have default values.
}Via a fieldbus with the modular device description file
With a modular device description file it is possible to configure all the values.
}Via the USB port of the head module, using the PSSuniversal Configurator
All the values can be configured using the PSSuniversal Assistant. Any configuration
via the USB port will overwrite the configuration made via the fieldbus.
If a module has been configured via the head module's USB port, it is locked and cannot be
overwritten by the fieldbus. This lock can be deactivated again in the PSSuniversal Config-
urator.
The following options exist for configuring the module in system environment B:
}Via the head module's USB port with PAS4000.
4.3.1 Measuring ranges
The input measuring ranges may be configured per input:
}Pt100 (Default)
}Pt200
}Pt500
}Pt1000
}Ni100
}Ni120
}Ni1000
}0 ... 4000Ohm (resistance measurement)
The temperature ranges for these measuring ranges can be found in the technical details.

Function description
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4.3.2 Connection type
The measuring circuits for the temperature measurements may be configured per input:
}2-wire measurement
}3-wire measurement (default)
}Connection for 4-wire sensor
The module will detect an open circuit on the measuring lines. Should an open circuit occur,
the module will output 7FFF as the measured value. If resistance measurement is con-
figured, the module will output FFFF in the case of an open circuit. With a 4-wire sensor
connection, an open circuit on an individual measuring line will not be detected; con-
sequently, the measurement result will be corrupted.
4.3.3 Range monitoring
You can deactivate range monitoring for each input. Range monitoring refers to the meas-
uring range of the sensor which is configured for the input. This option is activated in the
default configuration. The module writes the result of range monitoring as follows:
}System environment A:
In the status byte (see PSSu assignment in system environment A [ 20])
}System environment B:
in the I/O data element "Overrange" or "Underrange" (see PSSu assignment in system
environment B [ 21])
The module behaves as follows, irrespective of the range monitoring configuration:
}If the value falls below the range, the temperature value stops. The temperature value
corresponding to the lower limit of the measuring range is output.
}If the range is exceeded, the temperature value continues. The module extrapolates
the temperature value linearly.
4.3.4 Offset for the 2-wire measurement
In the case of 2-wire measurement, the line resistance influences the measurement as a
matter or principle, corrupting the result. The module allows you to take the value for the
line resistance into account and to compensate for it when determining the temperature.
You can calculate the line resistance (feed and return line), measure it directly using a
meter or define it via the module.
To use the module to define the measuring line resistance, follow the instructions below:
}Short out the temperature sensor. The short circuit should be as close as possible to
the temperature sensor.
}Connect the PSSuniversal system to the system software.
}Call up the module configuration.
– Deactivate "Manufacturer scaling" and "User scaling".
– Select the resistance measurement ("0.0 ... 4000.0") under "Measuring range".
– Select 2-wire measurement under "Connection type".
– Enter zero under "2-wire measurement offset".

Function description
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}Start the PSSuniversal system. Measurement of the line resistance will start.
– The measurement will be more accurate if the line temperature is the same during
measurement as it is during operation.
}In the system's PII (system environment A) or in the I/O data element "Data" (system
environment B), the measurement value appears as a hexadecimal value. Convert this
value into a decimal figure and note down the decimal value. This decimal value is the
measuring line resistance in 1/16 Ohm.
To account for the line resistance within the configuration, follow the instructions below:
}Call up the module configuration in the system software.
}Enter the measuring line resistance (feed and return line) in 1/16 Ohm under "2-wire
measurement offset".
– When you have established the measuring line resistance using the module, re-se-
lect the required sensor under "Measuring range".
4.3.5 Digital filter
A digital filter suppresses interference frequencies in the input signals. The module's pro-
cessing time will vary depending on the filter. With 3-wire measurement, or when a sensor
with four wires is connected, the filter time is double that found with a 2-wire measurement.
The module's processing time corresponds approximately to the sum of the filter times of
both inputs.
You can select one of the following filters per input:
Filtered
frequencies Attenuation
Filter time per input
2-wire measurement
Filter time per input
3-wire measurement
4-wire sensor connection
60 Hz 90 dB 103 ms 206 ms
50 Hz 80 dB 122 ms 244 ms
50 Hz and 60
Hz
65 dB 122ms 244ms
50 Hz and 60
Hz
69 dB 202ms 404ms
50 Hz and 60
Hz
74 dB 482ms 964ms

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4.3.6 Scaling
Scaling is a multi-stage process to adapt the values from the AD converter. The straight
path in the diagram indicates the default configuration.
Raw value
output?
Man.-
scaling
active?
Hardware
calibration
Manufacturer
scaling
User
scaling
active?
User
scaling
Output
formats
N
Y
Y
YN
N
ADC
raw value

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4.3.6.1 ADC raw value
You can configure each input so that the raw value from the AD converter is output directly,
without calibration or scaling. The following configurations are possible:
}No raw value (default)
The ADC value is calibrated, linearised (in the case of temperature output) and scaled if
necessary.
}Raw value for sensor
The raw value of the sensor is output.
}Raw value for wire
The raw value from a feed wire is output in the case of 3-wire measurement or when a
sensor with four wires is connected. In the case of 2-wire measurement, "0" is output.
If the AD converter fails to supply a valid value, the module will adopt the last valid value for
this input instead.
4.3.6.2 Manufacturer scaling
Scaling is used to define the offset (zero point compensation) and gain (amplification) of the
digital signal. Offset and gain are entered in the system software as decimal vaues. The re-
lationship between the signal before manufacturer scaling (x), the signal after manufacturer
scaling (y), offset (b1) and gain (a1) is a linear equation as follows:
y = (a1 / 256D * x) + b1 or
y = (a1 / 100H * x) + b1
The term a1 / 256D corresponds to the amplification factor. With the stated amplification
factor, a1 is calculated as follows:
a1 = Amplification factor * 256D
Amplification by 5% is therefore:
1.05 * 256D = 269 D
Manufacturer scaling is activated in the default setting. The default value for offset is 0. The
default value for gain is 160D (0A0H). That corresponds to an amplification factor of 10/16.
The resolution is 1/10K or 1/10Ohm.
If the manufacturer scaling and the user scaling are deactivated, the resolution will be 1/16
K or 1/16 Ohm.
4.3.6.3 User scaling
User scaling is an additional scaling level applied after manufacturer scaling. You can use
this scaling to correct local influences. The function is the same as that of manufacturer
scaling:
}y = (a2 / 256D * x) + b2 or
}y = (a2 / 100H * x) + b2
}a2 = Amplification factor * 256D
User scaling is deactivated in the default setting. The default value for offset is 0. The de-
fault value for gain is 256D (100H). That corresponds to amplification factor1.
If the manufacturer scaling and the user scaling are deactivated, the resolution will be 1/16
K or 1/16 Ohm.

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4.3.6.4 Values that fall outside the range limits
If a value lies outside the range that can be displayed in the PII, the respective upper or
lower range limit is output (see section entitled "Data formats")
4.3.7 Data formats
The way in which the analogue value is displayed depends on the measuring range, on
scaling and on the data format. The following examples show the relationship between the
values with default scaling.
You can configure the following data formats:
}Two's complement (default)
The digital values are transferred with 16bits.
}Sign and magnitude representation
The digital values are transferred with 15bits plus a sign bit (MSB). The MSB is "1" with
negative values and "0" with positive values.
With negative values there is a distinction between sign and magnitude representation and
two's complement representation. The values in the following tables apply with default scal-
ing.
Analogue value and typical digital value with a measuring range of -100 °C ... +100
°C, two's complement:
Temperature Decimal digital value Binary digital value
Hexadecimal digital
value
-100 °C -1000 1111 1100 0001 1000 FC18H
0 °C 0 0000 0000 0000 0000 0000H
100 °C 1000 0000 0011 1110 1000 03E8H
Analogue value and typical digital value with a measuring range of -100 °C ... +100
°C, sign and magnitude representation:
Temperature Decimal digital value Binary digital value
Hexadecimal digital
value
-100 °C -1000 1000 0011 1110 1000 83E8H
0 °C 0 0000 0000 0000 0000 0000H
100 °C 1000 0000 0011 1110 1000 03E8H
With resistance measurement, data is always transmitted with 16bits as positive values.
Analogue value and typical digital value with a measuring range of 0Ohm ...
1000Ohm:
Resistance Decimal digital value Binary digital value
Hexadecimal digital
value
0 Ohm 0 0000 0000 0000 0000 0000H
1000 Ohm 10000 0010 0111 0001 0000 2710H

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Range limits:
Measurement type Lower range limit Upper range limit
Two's complement Sign and magnitude rep-
resentation
Two's complement/sign
and magnitude repres-
entation
Temperature 8001HFFFFH7FFFH
Resistance 0000H0000HFFFFH
4.3.8 Summary and overview
The module has the following configuration options:
Configurable paramet-
ers Configurable values Default Key
Measuring range Pt100, Pt200, Pt500, Pt1000, Ni100,
Ni120, Ni1000, 0 … 4000 Ohm
Pt100
Connection type 2-wire measurement,
3-wire measurement,
Connection for 4-wire sensor
3-wire measure-
ment
2-wire measurement
offset
0 … 32767D0 Resolution in
1/16 Ohm
Manufacturer scaling - Activated/TRUE
Manufacturer scaling
offset
-32768 … 32767D0
Manufacturer scaling
gain
-32768 … 32767D160DAmplification
factor 10/16
User scaling - Deactivated/
FALSE
User scaling offset -32768 … 32767D0
User scaling gain -32768 … 32767D256DAmplification
factor 1
Filter characteristic 2-wire measurement:
103 ms/90 dB (60
Hz),
122 ms/80 dB (50
Hz),
122 ms/65 dB (50 Hz
and 60 Hz),
202 ms/69 dB (50 Hz
and 60 Hz),
482 ms/74 dB (50 Hz
and 60 Hz)
3-wire measure-
ment or 4-wire
sensor connection:
206 ms/90 dB (60
Hz),
244 ms/80 dB (50
Hz),
244 ms/65 dB (50
Hz and 60 Hz),
404 ms/69 dB (50
Hz and 60 Hz),
964 ms/74 dB (50
Hz and 60 Hz)
404 ms/69 dB
(50 Hz and 60
Hz)
With 2-wire
measurement,
202 ms/69 dB
(50 Hz and 60
Hz) is the default
setting
Range monitoring - Activated/TRUE

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Configurable paramet-
ers Configurable values Default Key
Sign and magnitude
representation
- Deactivated/
FALSE
Two's comple-
ment is activated
ADC raw value No raw value,
Raw value of sensor,
Raw value of wire
No raw value
4.3.9 PSSu assignment in system environment A
Each input occupies 16 consecutive bit addresses for the input data. Each input occupies
an additional 8 consecutive bit addresses for the status byte, where this has been con-
figured for the input. All the status bytes are displayed first in the PII, followed by the input
data.
Configuration Standard bus system
Input data
ST-PII ST-PIO
32 Bit - - -
Input data and status byte ("X") 48 Bit - - -
Bit sequence in the PII, input data only, no status byte:
Input PII Assignment
Input I0 1 LSB input data
... ...
16 MSB input data
Input I1 17 LSB input data
... ...
32 MSB input data
Bit sequence in the PII, input data and status byte:
Input PII Assignment
Input I0 1 LSB status byte
... ...
8 MSB status byte
Input I1 9 LSB status byte
... ...
16 MSB status byte
Input I0 17 LSB input data
... ...
32 MSB input data
Input I1 33 LSB input data
... ...
48 MSB input data