Pepperl+Fuchs HiC2871A User manual

ISO9001
3
Functional Safety
Solenoid Driver
HiC2871A
PROCESS AUTOMATION
MANUAL

With regard to the supply of products, the current issue of the following document is
applicable: The General Terms of Delivery for Products and Services
of the Electrical Industry, published by the Central Association of the Electrical Industry
(Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most recent
version as well as the supplementary clause: "Expanded reservation of proprietorship"
Functional Safety HiC2871A

Functional Safety HiC2871A
Content
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1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Content of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Standards and Directives for Functional Safety. . . . . . . . . . . . 7
3 Planning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 System Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Safety Function and Safe State . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Characteristic Safety Values . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.5 Useful Life Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Mounting and Installation . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Proof Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Maintenance and Repair . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Functional Safety Manual HiD2872, HiC2873(Y1), HiD2876, HiC2877

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Functional Safety HiC2871A
Introduction
1Introduction
1.1 Content of this Document
This document contains information for usage of the device in functional safety-
related applications. You need this information to use your product throughout the
applicable stages of the product life cycle. These can include the following:
• Product identification
• Delivery, transport, and storage
• Mounting and installation
• Commissioning and operation
• Maintenance and repair
•Troubleshooting
•Dismounting
•Disposal
The documentation consists of the following parts:
•Presentdocument
• Instruction manual
•Manual
• Datasheet
Additionally, the following parts may belong to the documentation, if applicable:
• EU-type examination certificate
• EU declaration of conformity
• Attestation of conformity
• Certificates
• Control drawings
• FMEDA report
• Assessment report
• Additional documents
For more information about functional safety products from Pepperl+Fuchs see
www.pepperl-fuchs.com/sil.
Note!
This document does not substitute the instruction manual.
Note!
For full information on the product, refer to the instruction manual and further
documentation on the Internet at www.pepperl-fuchs.com.
Functional Safety HiC2871A

Functional Safety HiC2871A
Introduction
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1.2 Safety Information
Target Group, Personnel
Responsibility for planning, assembly, commissioning, operation, maintenance,
and dismounting lies with the plant operator.
Only appropriately trained and qualified personnel may carry out mounting,
installation, commissioning, operation, maintenance, and dismounting of the
product. The personnel must have read and understood the instruction manual
and the further documentation.
Intended Use
The device is only approved for appropriate and intended use. Ignoring these
instructions will void any warranty and absolve the manufacturer from any liability.
The device is developed, manufactured and tested according to the relevant
safety standards.
Use the device only
• for the application described
• with specified environmental conditions
• with devices that are suitable for this safety application
Improper Use
Protection of the personnel and the plant is not ensured if the device is not used
according to its intended use.

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Functional Safety HiC2871A
Introduction
1.3 Symbols Used
This document contains symbols for the identification of warning messages and
of informative messages.
Warning Messages
You will find warning messages, whenever dangers may arise from your actions.
It is mandatory that you observe these warning messages for your personal safety
and in order to avoid property damage.
Depending on the risk level, the warning messages are displayed in descending
order as follows:
Informative Symbols
Action
This symbol indicates a paragraph with instructions. You are prompted to perform
an action or a sequence of actions.
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
Caution!
This symbol indicates a possible fault.
Non-observance could interrupt the device and any connected systems and
plants, or result in their complete failure.
Note!
This symbol brings important information to your attention.

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Product Description
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2 Product Description
2.1 Function
This isolated barrier is used for intrinsic safety applications.
The device supplies power to solenoids, LEDs and audible alarms located in a
hazardous area.
The device is loop powered, so the available energy at the output is received from
the input signal. The output signal has a resistive characteristic. As a result the
output voltage and current are dependent on the load and the input voltage
At full load, 12 V at 45 mA is available for the hazardous area application.
This device mounts on a HiC Termination Board.
2.2 Interfaces
The device has the following interfaces.
• Safety relevant interfaces: input and output
2.3 Marking
2.4 Standards and Directives for Functional Safety
Device specific standards and directives
System-specific standards and directives
Note!
For corresponding connections see datasheet.
Pepperl+Fuchs GmbH
Lilienthalstraße 200, 68307 Mannheim, Germany
Internet: www.pepperl-fuchs.com
HiC2871A Up to SIL 3
Functional safety IEC/EN 61508, part 1 –7, edition 2010:
Functional safety of electrical/electronic/programmable
electronic safety-related systems (manufacturer)
Functional safety IEC/EN 61511, part 1 –3, edition 2003:
Functional safety –Safety instrumented systems for the
process industry sector (user)
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Functional Safety HiC2871A
Planning
3Planning
3.1 System Structure
3.1.1 Low Demand Mode of Operation
If there are two control loops, one for the standard operation and another one for
the functional safety, then usually the demand rate for the safety loop is assumed
to be less than once per year.
The relevant safety parameters to be verified are:
•thePFD
avg value (average Probability of dangerous Failure on Demand) and
the T1value (proof test interval that has a direct impact on the PFDavg value)
•theSFFvalue(Safe Failure Fraction)
•theHFTarchitecture(Hardware Fault Tolerance)
3.1.2 High Demand or Continuous Mode of Operation
If there is only one safety loop, which combines the standard operation and
safety-related operation, then usually the demand rate for this safety loop is
assumed to be higher than once per year.
The relevant safety parameters to be verified are:
• the PFH value (Probability of dangerous Failure per Hour)
• Fault reaction time of the safety system
•theSFFvalue(Safe Failure Fraction)
•theHFTarchitecture(Hardware Fault Tolerance)
3.1.3 Safe Failure Fraction
The safe failure fraction describes the ratio of all safe failures and dangerous
detected failures to the total failure rate.
SFF = (s+ dd) / (s+ dd + du)
A safe failure fraction as defined in IEC/EN 61508 is only relevant for elements or
(sub)systems in a complete safety loop. The device under consideration is
always part of a safety loop but is not regarded as a complete element or
subsystem.
For calculating the SIL of a safety loop it is necessary to evaluate the safe failure
fraction of elements, subsystems and the complete system, but not of a single
device.
Nevertheless the SFF of the device is given in this document for reference.
Functional Safety HiC2871A

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Planning
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3.2 Assumptions
The following assumptions have been made during the FMEDA:
• Failure rate based on the Siemens standard SN29500.
• Failure rates are constant, wear is not considered.
• The safety-related device is considered to be of type Adevice with a hardware
fault tolerance of 0.
• The device will be used under average industrial ambient conditions, which
are comparable with the classification "stationary mounted" in MIL-HDBK-
217F. Alternatively, the following ambient conditions are assumed:
• IEC/EN 60654-1 Class C (sheltered location) with temperature limits in the
range of the manufacturer's specifications and an average temperature of
40 ºC over a long period. The humidity level is within manufacturer's rating.
For a higher average temperature of 60 ºC, the failure rates must be
multiplied by a factor of 2.5 based on experience. A similar factor must be
used if frequent temperature fluctuations are expected.
• The device shall claim less than 10 % of the total failure rate for a SIL 3 safety
loop.
• For a SIL 3 application operating in low demand mode the total PFDavg value
of the SIF (Safety Instrumented Function) should be smaller than 10-3, hence
the maximum allowable PFDavg value would then be 10-4.
• For a SIL 3 application operating in high demand mode the total PFH value of
the SIF should be smaller than 10-7 per hour, hence the maximum allowable
PFH value would then be 10-8 per hour.
• Since the safety loop has a hardware fault tolerance of 0and it is a type A
device, the SFF must be > 90 % according to table 2 of IEC/EN 61508-2 for a
SIL 3 (sub) system.

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Functional Safety HiC2871A
Planning
3.3 Safety Function and Safe State
Safe State
The safe state of the output is the de-energized state. The output current is less
than 50 A.
Safety Function
When the input signal is active, the output is activated. The safe state is
introduced when the input voltage is below 5 V DC.
Reaction Time
The reaction time for all safety functions is < 1 s.
Note!
See corresponding datasheets for further information.

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Planning
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3.4 Characteristic Safety Values
The characteristic safety values like PFD, PFH, SFF, HFT and T1are taken from
the FMEDA report. Observe that PFD and T1are related to each other.
The function of the devices has to be checked within the proof test interval (T1).
Parameters Characteristic values
Assessment type Full assessment
Device type A
Mode of operation Low demand mode, high demand mode or
continuous mode
HFT 0
SIL (SC) 3
Safety function The output is de-energized if the input is in low
condition
s176 FIT
dd 0 FIT
du 0 FIT
total (safety function)176 FIT
no part 197 FIT
SFF 1
1"No effect failures" and "Annunciation failures" are not influencing the safety function and are therefore not
included in SFF and in the failure rates of the safety function.
100 %
MTBF 2
2acc. to SN29500. This value includes failures which are not part of the safety function/MTTR = 24 h.
262 years
PFH 3
3As the dfailure rate is 0 FIT, the PFD calculation yields a PFD of zero, independent from the proof test
interval.
0 1/h
PFDavg for T1= 1 year 30
Reaction time 4
4Time between fault detection and fault reaction
< 1 s
Table 3.1
Note!
The characteristic values apply to all modes of operation that can be set on the
device.

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Functional Safety HiC2871A
Planning
3.5 Useful Life Time
Although a constant failure rate is assumed by the probabilistic estimation this
only applies provided that the useful lifetime of components is not exceeded.
Beyond this useful lifetime, the result of the probabilistic estimation is
meaningless as the probability of failure significantly increases with time. The
useful lifetime is highly dependent on the component itself and its operating
conditions –temperature in particular. For example, the electrolytic capacitors
can be very sensitive to the operating temperature.
This assumption of a constant failure rate is based on the bathtub curve, which
shows the typical behavior for electronic components.
Therefore it is obvious that failure calculation is only valid for components that
have this constant domain and that the validity of the calculation is limited to the
useful lifetime of each component.
It is assumed that early failures are detected to a huge percentage during the
installation and therefore the assumption of a constant failure rate during the
useful lifetime is valid.
However, according to IEC/EN 61508-2, a useful lifetime, based on general
experience, should be assumed. Experience has shown that the useful lifetime
often lies within a range period of about 8 to 12 years.
As noted in DIN EN 61508-2:2011 note N3, appropriate measures taken by the
manufacturer and plant operator can extend the useful lifetime.
Our experience has shown that the useful lifetime of a Pepperl+Fuchs product
can be higher if the ambient conditions support a long life time, for example if the
ambient temperature is significantly below 60 °C.
Please note that the useful lifetime refers to the (constant) failure rate of the
device. The effective life time can be higher.

Functional Safety HiC2871A
Mounting and Installation
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4 Mounting and Installation
Installing the Device
1. Observe the safety instructions in the instruction manual.
2. Observe the information in the manual.
3. Observe the requirements for the safety loop.
4. Connect the device only to devices that are suitable for this safety application.
5. Check the safety function to ensure the expected output behavior.
4.1 Configuration
A configuration of the device is not necessary and not possible.
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Functional Safety HiC2871A
Operation
5Operation
Operating the device
1. Observe the safety instruction in the instruction manual.
2. Observe the information in the manual.
3. Use the device only with devices that are suitable for this safety application.
4. Correct any occurring safe failures within 24 hours. Take measures to
maintain the safety function while the device is being repaired.
5.1 Proof Test Procedure
A proof test is not necessary as these loop powered devices do not have any
dangerous failures. However, we still recommend a proof test, e. g. together with
the proof test of the entire system. With the following instructions the correct
performance of the basic functionality can be tested.
It is under the responsibility of the plant operator to define the type of proof test
and the interval time period.
Check the settings after the configuration by suitable tests.
Equipment required:
• Digital multimeter without special accuracy
Use for the proof test of the intrinsic safety side of the device a special digital
multimeter for intrinsically safe circuits.
If intrinsically safe circuits are operated with non-intrinsically safe circuits, they
must no longer be used as intrinsically safe circuits.
• Power supply set to values according to the table below
Danger!
Danger to life from missing safety function
If the safety loop is put out of service, the safety function is no longer guaranteed.
• Do not deactivate the device.
• Do not bypass the safety function.
• Do not repair, modify, or manipulate the device.
Functional Safety HiC2871A

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Operation
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Proof Test Procedure
1. Prepare a test set-up, see figure below.
2. Verify the input and output values as given in table below.
3. Set back the device to the original settings after the test.
Figure 5.1 Proof test set-up for HiC2871A
Step No. Input value Output value
119 V (high) On/Imax current, depends on device version
25 V (low) Off/< 50 A
Table 5.1 Steps to be performed for the proof test
HiC2871A
14
1
4
+
--
11 +
Termination Board
Zone 0, 1, 2
Div. 1, 2
Zone 2
Div. 2
Multimeter
(mA) 19 V DC 5 V DC
SL2
5a
5b
8a
7a
V V
Resistance
value
220 Ω,1 W
Tip
The easiest way to test HiC devices is by using a stand-alone HiCTB**-SCT-***-
**-** termination board. In this test, it is not necessary to disconnect the wiring of
the existing application. Faults in a subsequent wiring can be avoided.

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Functional Safety HiC2871A
Maintenance and Repair
6 Maintenance and Repair
Maintaining, Repairing or Replacing the Device
In case of maintenance, repair or replacement of the device, proceed as follows:
1. Implement appropriate maintenance procedures for regular maintenance of
the safety loop.
2. Ensure the proper function of the safety loop, while the device is maintained,
repaired or replaced.
If the safety loop does not work without the device, shut down the application.
Do not restart the application without taking proper precautions.
Secure the application against accidental restart.
3. Do not repair a defective device. A defective device must only be repaired by
the manufacturer.
4. Replace a defective device only by a device of the same type.
Danger!
Danger to life from missing safety function
If the safety loop is put out of service, the safety function is no longer guaranteed.
• Do not deactivate the device.
• Do not bypass the safety function.
• Do not repair, modify, or manipulate the device.
Functional Safety HiC2871A

Functional Safety HiC2871A
List of Abbreviations
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7 List of Abbreviations
ESD Emergency Shutdown
FIT Failure In Time in 10-9 1/h
FMEDA Failure Mode, Effects, and Diagnostics Analysis
sProbability of safe failure
dd Probability of dangerous detected failure
du Probability of dangerous undetected failure
no effect Probability of failures of components in the safety loop that have
no effect on the safety function. The no effect failure is not used
for calculation of SFF.
not part Probability of failure of components that are not in the safety loop
total (safety function) Safety function
HFT Hardware Fault Tolerance
MTBF Mean Time Between Failures
MTTR Mean Time To Restoration
PCS Process Control System
PFDavg Average Probability of dangerous Failure on Demand
PFH Average frequency of dangerous failure
PTC Proof Test Coverage
SFF Safe Failure Fraction
SIF Safety Instrumented Function
SIL Safety Integrity Level
SIL (SC) Safety Integrity Level (Systematic Capability)
SIS Safety Instrumented System
T1Proof Test Interval
Functional Safety HiC2871A

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Functional Safety HiC2871A
Notes
Pulscon LTC50 HART

Functional Safety HiC2871A
Notes
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Subject to modifications
Copyright PEPPERL+FUCHS • Printed in Germany
www.pepperl-fuchs.com
PROCESS AUTOMATION –
PROTECTING YOUR PROCESS
Worldwide Headquarters
Pepperl+Fuchs GmbH
68307 Mannheim · Germany
Tel. [phone]
E-mail: [email protected]
For the Pepperl+Fuchs representative
closest to you check www.pepperl-fuchs.com/contact
DOCT-5886
11/2017