Pepperl+Fuchs KFD2-UT2 Series Instruction Manual

ISO9001
2
TE M P E R AT U RE
CONVERTER
KFD2-UT2-(Ex)*, HiD2082
PROCESS AUTOMATION
SAFETY MANUAL SIL

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"
SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Contents
2011-09
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1 Introduction......................................................................... 4
1.1 General Information .......................................................................................4
1.2 Intended Use ................................................................................................4
1.3 Manufacturer Information ..............................................................................5
1.4 Relevant Standards and Directives ...............................................................6
2 Planning .............................................................................. 7
2.1 System Structure...........................................................................................7
2.1.1 Low Demand Mode ..................................................................................7
2.1.2 High Demand Mode .................................................................................7
2.1.3 Safe Failure Fraction.................................................................................7
2.2 Assumptions .................................................................................................8
2.3 Safety Function and Safe State .....................................................................9
2.4 Characteristic Safety Values .......................................................................10
3 Safety Recommendation.................................................. 12
3.1 Interfaces ....................................................................................................12
3.2 Configuration ..............................................................................................12
3.3 Useful Life Time ..........................................................................................12
3.4 Installation and Commissioning ..................................................................13
4 Proof Test .......................................................................... 14
4.1 General .......................................................................................................14
4.2 Proof Test Procedure for KFD2-UT2-(Ex)* ..................................................14
4.3 Proof Test Procedure for HiD2082...............................................................20
5 Abbreviations.................................................................... 27

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Introduction
1Introduction
1.1 General Information
This manual contains information for application of the device in functional safety
related loops.
The corresponding data sheets, the operating instructions, the system
description, the Declaration of Conformity, the EC-Type-Examination Certificate,
the Functional Safety Assessment and applicable Certificates (see data sheet)
are integral parts of this document.
The documents mentioned are available from www.pepperl-fuchs.com or by
contacting your local Pepperl+Fuchs representative.
Mounting, commissioning, operation, maintenance and dismounting of any
devices may only be carried out by trained, qualified personnel. The instruction
manual must be read and understood.
When it is not possible to correct faults, the devices must be taken out of service
and action taken to protect against accidental use. Devices should only be
repaired directly by the manufacturer. De-activating or bypassing safety functions
or failure to follow the advice given in this manual (causing disturbances or
impairment of safety functions) may cause damage to property, environment or
persons for which Pepperl+Fuchs GmbH will not be liable.
The devices are developed, manufactured and tested according to the relevant
safety standards. They must only be used for the applications described in the
instructions and with specified environmental conditions, and only in connection
with approved external devices.
1.2 Intended Use
KFD2-UT2-Ex* (Ex devices)
This isolated barrier is used for intrinsic safety applications. It is designed to
connect RTDs, thermocouples, or potentiometers in the hazardous area, and
provide a proportional 0/4 mA ... 20 mA (0/1 V ... 5 V) signal to the safe area.
The barrier offers 3-port isolation between input, output, and power supply.
A removable terminal block K-CJC-** is available for thermocouples when internal
cold junction compensation is desired.
A fault is indicated by a red flashing LED per NAMUR NE44 and user-configured
fault outputs.
The device is easily programmed with the PACTwareTM configuration software.
A collective error messaging feature is available when used with the Power Rail
system.
For additional information, refer to the manual and www.pepperl-fuchs.com.

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Introduction
2011-09
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KFD2-UT2-* (Non-Ex devices)
This signal conditioner is designed to connect RTDs, thermocouples, or
potentiometers, and provide a proportional 0/4 mA ... 20 mA (0/1 V ... 5 V) signal.
The barrier offers 3-port isolation between input, output, and power supply.
A removable terminal block K-CJC-** is available for thermocouples when internal
cold junction compensation is desired.
A fault is indicated by a red flashing LED per NAMUR NE44 and user-configured
fault outputs.
The device is easily programmed with the PACTwareTM configuration software.
A collective error messaging feature is available when used with the Power Rail
system.
For additional information, refer to the manual and www.pepperl-fuchs.com.
HiD2082
This isolated barrier is used for intrinsic safety applications.
It is a universal temperature converter that accepts thermocouples (TC), millivolts,
potentiometers, or resistance temperature detectors (RTD) from a hazardous area
and converts them to an isolated, linearized analog output in the safe area.
The outputs can be selected as a current source, current sink, or voltage source
with DIP switches on the side panel.
Line fault detection of the field circuit is indicated by a red LED and an output on
the fault bus. The fault conditions are monitored via a Fault Indication Board.
The device is easily programmed by the use of a DIP switches on the side of the
unit and with the PACTwareTM configuration software.
This module mounts on a HiD Termination Board.
1.3 Manufacturer Information
Pepperl+Fuchs GmbH
Lilienthalstrasse 200
68307 Mannheim/Germany
KFD2-UT2-(Ex)*, HiD2082
Up to SIL2

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Introduction
1.4 Relevant Standards and Directives
Device specific standards and directives
■Functional safety IEC 61508 part 1 –7, edition 2000:
Standard of functional safety of electrical/electronic/programmable electronic
safety-related systems (product manufacturer)
■Electromagnetic compatibility:
- EN 61326-1:2006
- NE 21:2006
System specific standards and directives
■Functional safety IEC 61511 part 1 –3, edition 2003:
Standard of functional safety: safety instrumented systems for the process
industry sector (user)

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Planning
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2 Planning
2.1 System Structure
2.1.1 Low Demand Mode
If there are two 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:
■the PFDavg value (average Probability of Failure on Demand) and
Tproof (proof test interval that has a direct impact on the PFDavg)
■the SFF value (Safe Failure Fraction)
■the HFT architecture (Hardware Fault Tolerance architecture)
2.1.2 High Demand Mode
If there is only one loop, which combines the standard operation and safety
related operation, then usually the demand rate for this loop is assumed to be
higher than once per year.
The relevant safety parameters to be verified are:
■PFH (Probability of dangerous Failure per Hour)
■Fault reaction time of the safety system
■the SFF value (Safe Failure Fraction)
■the HFT architecture (Hardware Fault Tolerance architecture)
2.1.3 Safe Failure Fraction
The safe failure fraction describes the ratio of all safe failures and dangerous
detected failures to the total failure rate.
SFF = (λs+ λdd) / (λs+ λdd + λdu)
A safe failure fraction as defined in 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.

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Planning
2.2 Assumptions
The following assumptions have been made during the FMEDA analysis:
■Failure rates are constant, wear out mechanisms are not included.
■Propagation of failures is not relevant.
■Sufficient tests are performed prior to shipment to verify the absence of
vendor and/or manufacturing defects that prevent proper operation of
specified functionality to product specifications or cause operation different
from the design analyzed.
■All modules are operated in the low demand mode of operation.
■External power supply failure rates are not included.
■Short circuit (SC) detection and Lead Breakage (LB) detection are activated.
■The "HOLD" function is disabled.
■Process related parameters are protected by password.
■Failures during parameterization are not considered.
■Only one input and one output are part of the considered safety function (only
2-channel version).
■The collective error output which signals if the field wiring is broken or shorted
is not considered in the FMEDA and the calculations.
■The characteristics of the current output are set to NE43 (4 mA ... 20 mA).
■The device shall claim less than 10 % of the total failure budget for a SIL2
safety loop.
■For a SIL2 application operating in Low Demand Mode the total PFDavg value
of the SIF (Safety Instrumented Function) should be smaller than 10-2, hence
the maximum allowable PFDavg value would then be 10-3.
■The stress levels are average for an industrial environment and can be
compared to the Ground Fixed Classification of MIL-HNBK-217F.
Alternatively, the assumed environment is similar to:
• IEC 60654-1 Class C (sheltered location) with temperature limits within
the manufacturer's rating and an average temperature over a long period
of time of 40 ºC. Humidity levels are assumed within manufacturer's
rating. For a higher average temperature of 60 ºC, the failure rates should
be multiplied with an experience based factor of 2.5. A similar multiplier
should be used if frequent temperature fluctuation must be assumed.
■The safety-related device is considered to be of type Bcomponents with a
Hardware Fault Tolerance of 0.
■The IEC 61511-1 section 11.4.4 allows devices to be used in applications one
SIL higher than given by table 3 of IEC 61508-2, if the device is proven in use.
The assessment and proven-in-use demonstration lead to the result that the
device may be used in applications up to SIL2. However, it is the responsibility
of the end-user to decide on applying proven-in-use devices.
■Failure rate based on the Siemens SN29500 data base.
■It was assumed that the appearance of a safe error (e. g. output in safe state)
would be repaired within 8 hours (e. g. remove sensor burnout).

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Planning
2011-09
9
■During the absence of the device for repairing, measures have to be taken to
ensure the safety function (for example: substitution by an equivalent device).
■For the calculation it was also assumed that the indication of a dangerous
error (via fault bus) would be detected within 1 hour by the logic solver (SPS).
■The application program in the safety logic solver is configured to detect
underrange and overrange failures. Therefore these failures have been
classified as dangerous detected failures.
2.3 Safety Function and Safe State
SIL2 Safety Function
The safety function of the device is fulfilled, as long as the output repeats the
linearized input signal with a tolerance of 2 %.
Safe State
The safe state is defined, as the output being < 4 mA or > 20 mA.
Reaction Time
The reaction time for:
■temperature inputs: < 1.5 s
■potentiometer inputs: < 3 s
For additional information, refer to the manual and www.pepperl-fuchs.com.

2011-09
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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Planning
2.4 Characteristic Safety Values
The following tables contain no data for the SFF, since this performance value has
to be calculated with consideration of the connected field device.
KFD2-UT2-(Ex)*
Parameters acc. to IEC 61508 Variables
Device type B
Demand mode Low Demand Mode
Safety function Transfer of analog value
HFT 0
SIL 2 (proven-in-use acc. to EN 61511)
λs0 FIT
λdd1333 FIT
λdu279.2 FIT
λno effect3295 FIT
λtotal (safety function) 706 FIT
λno part 33.4 FIT
SFF 88.78 %
MTBF 4154 years
PFDavg for T1= 1 year 3.74 x 10-4
Tproof max. 2 years
1"Fail high" and "Fail low" failures are considered as dangerous detected failures λdd.
2Annunciation failure rates that only influence the diagnostic function were marginal and added to the λdu.
3"No effect" failures are not influencing the safety functions and are therefore added to the λs.
4acc. to SN29500. This value includes failures which are not part of the safety function (MTTR = 8 h).
Ta b l e 2 . 1

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Planning
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HiD2082
The characteristic safety values like PFD/PFH, SFF, HFT and Tproof are taken from
the SIL report/FMEDA report. Please note, PFD and Tproof are related to each
other.
The function of the devices has to be checked within the proof test interval
(Tproof).
Parameters acc. to IEC 61508 Variables
Device type B
Demand mode Low Demand Mode
Safety function Transfer of analog value
HFT 0
SIL 2 (proven-in-use acc. to EN 61511)
λs75 FIT
λdd1328.6 FIT
λdu298.1 FIT
λno effect3312 FIT
λtotal (safety function) 814 FIT
λno part 43 FIT
SFF 87.93 %
MTBF 4133 years
PFDavg for T1= 1 year 4.30 x 10-4
Tproof max. 2 years
1"Fail high" and "Fail low" failures are considered as dangerous detected failures λdd.
2Annunciation failure rates that only influence the diagnostic function were marginal and added to the λdu.
3"No effect" failures are not influencing the safety functions and are therefore added to the λs.
4acc. to SN29500. This value includes failures which are not part of the safety function (MTTR = 8 h).
Ta b l e 2 . 2

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Safety Recommendation
3 Safety Recommendation
3.1 Interfaces
The device has the following interfaces. For corresponding terminals see data
sheet.
■Safety relevant interfaces:
• input I, input II (only 2-channel version)
• output I, output II (only 2-channel version)
■Non-safety relevant interfaces: programming socket, collective error output
3.2 Configuration
The configuration of the device is performed by means of PACTwareTM and has to
be verified after each programming procedure. The verification procedure has to
be adopted to the individual application and shall cover all parameterized
functions.
3.3 Useful Life Time
Although a constant failure rate is assumed by the probabilistic estimation this
only applies provided that the useful life time of components is not exceeded.
Beyond this useful life time, the result of the probabilistic calculation is
meaningless as the probability of failure significantly increases with time.
The useful life time 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 working 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 life time of each component.
It is assumed that early failures are detected to a huge percentage during the
installation period and therefore the assumption of a constant failure rate during
the useful life time is valid.
However, according to IEC 61508-2, a useful life time, based on experience,
should be assumed. Experience has shown that the useful life time often lies
within a range period of about 8 ... 12 years.

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Safety Recommendation
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Our experience has shown that the useful life time of a Pepperl+Fuchs product
can be higher
■if there are no components with reduced life time in the safety path (like
electrolytic capacitors, relays, flash memory, opto coupler) which can produce
dangerous undetected failures and
■if the ambient temperature is significantly below 60 °C.
Please note that the useful life time refers to the (constant) failure rate of the
device. The effective life time can be higher.
3.4 Installation and Commissioning
Installation has to consider all aspects regarding the SIL level of the loop. During
installation or replacement of the device the loop has to shut down. Devices have
to be replaced by the same type of devices.

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
4 Proof Test
4.1 General
According to IEC 61508-2 a recurring proof test shall be undertaken to reveal
potentially dangerous failures that are otherwise not detected by diagnostic tests.
The functionality of the subsystem must be verified at periodic intervals
depending on the applied PFDavg in accordance with the data stated in the
"Characteristic Safety Values" chapter (see chapter 2.4).
The functionality of the subsystem must be verified at periodic intervals
depending on the applied PFDavg in accordance with the data provided in the
safety certificate available on our webpage www.pepperl-fuchs.com.
It is under the responsibility of the operator to define the type of proof test and the
interval time period.
With the following instructions a proof test can be performed which will reveal
almost all of the possible dangerous faults (diagnostic coverage > 90 %).
4.2 Proof Test Procedure for KFD2-UT2-(Ex)*
Ge n e r a l
The proof test shall be performed with the same configuration which is used in the
application. The sensors shall be substituted by sensor simulator/calibrators.
Prove the safety function at input values which are configured to set the output to
4 mA, 12 mA, 20 mA.
Measurement set up:
■Sensor simulation/voltage source/resistor
■Current meter/digital multimeter (DMM)

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
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Thermocouple Input (TC)
Figure 4.1 Example proof test set-up for KFD2-UT2-(Ex)* (TC)
Usage in Zone 0, 1, 2/Div. 1, 2 only for KFD2-UT2-Ex1 and KFD2-UT2-Ex2
1-channel versions KFD2-UT2-1 and KFD2-UT2-Ex1 have only one channel.
Additional set up: 110 Ωfixed resistor
1. Connect TC simulator to the input terminals 1+ and 2- (channel I) and
4+ and 5- (channel II).
2. Connect current meter/digital multimeter (DMM) to the current output
terminals 7 and 8 (channel I) and 10 and 11 (channel II).
3. Set compensation/reference temperature in the simulator to 26 °C.
4. Connect a 110 Ωfixed resistor (0.1 % accuracy) to terminals 2 and 3
(channel I) and 5 and 6 (channel II) (instead of the special sensor for internal
compensation).
5. Set the TC simulator sequentially to the temperature values
representing 4 mA, 12 mA, 20 mA and measure the output current.
6. Proof test is passed if the measured output values are within 2 % of the output
span. This means:
• 3.7 mA ... 4.3 mA
• 11.7 mA ... 12.3 mA
• 19.7 mA ... 20.3 mA
7. Remove the 110 Ωresistor from terminals 2 and 3 (channel I) and 5 and 6
(channel II), to check if the lead breakage of the CJC is monitored. The red
LED must be blinking. The output behaviour in the event of a failure depends
on the device configuration.
This test is also applicable if external compensation (setting of a fixed
compensation temperature in the module) is used in the application. Adapt
CJC value in the simulator during step 3 accordingly.
KFD2-UT2-Ex2
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
2
3
1
5
6
4
24 V DC
14+
15-
Power Rail
24 V DCERR
7
9-
8+
10
12-
11+
mA
mA
110Ω
TC
Sim.
110Ω
TC
Sim.

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
Additionally the loop diagnosis shall be tested to prove that the fault signalling via
the current output is working correctly. The output current in the event of a failure
depends on the device configuration. Please record this configuration and the
resulting expected fault signalling current in the test report. Example: if downscale
is configured, 2.0 mA ±1 % must be measured in the event of a failure. The red
LED must be blinking.
Thermocouple:
■Disconnect simulator (lead breakage).
■Disconnect fixed resistor (lead breakage of CJC).
■Apply short circuit between terminal 2 and 3 for channel I and between
terminals 5 and 6 for channel II (short circuit of CJC).

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
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RTD Input
Figure 4.2 Example proof test set-up for KFD2-UT2-(Ex)* (TC)
Usage in Zone 0, 1, 2/Div. 1, 2 only for KFD2-UT2-Ex1 and KFD2-UT2-Ex2
1-channel versions KFD2-UT2-1 and KFD2-UT2-Ex1 have only one channel.
1. Connect RTD simulator to terminals, depending on the application:
• for4-wire:terminals1,2,3,4
• for 3-wire: terminals 1, 2, 3 (channel I) and 4, 5, 6 (channel II)
• for 2-wire: terminals 2, 3 (channel I) and 5, 6 (channel II)
2. Connect current meter/digital multimeter (DMM) to the current output
terminals 7 and 8 (channel I) and 10 and 11 (channel II).
3. Set the RTD simulator sequentially to the temperature values
representing 4 mA, 12 mA, 20 mA and measure the output current.
4. Proof test is passed if the measured output values are within 2 % of the output
full scale. This means:
• 3.7 mA ... 4.3 mA
• 11.7 mA ... 12.3 mA
• 19.7 mA ... 20.3 mA
Additionally the loop diagnosis shall be tested to prove that the fault signalling via
the current output is working correctly. The output current in the event of a failure
depends on the device configuration. Please record this configuration and the
resulting expected fault signalling current in the test report. Example: if downscale
is configured, 2.0 mA ±1 % must be measured in the event of a failure. The red
LED must be blinking.
RTD:
■Disconnect sequentially every single connection wire (2-, 4, depending on the
configuration). Verify that the output indicates a lead breakage.
■Short circuit terminals 2 and 3 without disconnecting the wires or RTD
simulator. Verify that the output indicates a short circuit. For channel II apply
the short circuit between terminals 5 and 6.
KFD2-UT2-Ex2
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
2
3
1
5
6
4
24 V DC
14+
15-
Power Rail
24 V DCERR
7
9-
8+
10
12-
11+
mA
mA
TT
T

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
Voltage Input (mV)
Figure 4.3 Example proof test set-up for KFD2-UT2-(Ex)* (TC)
Usage in Zone 0, 1, 2/Div. 1, 2 only for KFD2-UT2-Ex1 and KFD2-UT2-Ex2
1-channel versions KFD2-UT2-1 and KFD2-UT2-Ex1 have only one channel.
1. Connect mV source to terminals 1 and 2 (channel I) and 4 and 5 (channel II).
2. Connect current meter/digital multimeter (DMM) to the current output
terminals 7 and 8 (channel I) and 10 and 11 (channel II).
3. Set the mV source sequentially to the voltage values
representing 4 mA, 12 mA, 20 mA and measure the output current.
4. Proof test is passed if the measured output values are within 2 % of the output
full scale. This means:
• 3.7 mA ... 4.3 mA
• 11.7 mA ... 12.3 mA
• 19.7 mA ... 20.3 mA
Additionally the loop diagnosis shall be tested to prove that the fault signalling via
the current output is working correctly. The output current in the event of a failure
depends on the device configuration. Please record this configuration and the
resulting expected fault signalling current in the test report. Example: if downscale
is configured, 2.0 mA ±1 % must be measured in the event of a failure. The red
LED must be blinking.
Voltage Input:
■Disconnect voltage source. Verify that the output indicates a lead breakage.
KFD2-UT2-Ex2
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
2
3
1
5
6
4
24 V DC
14+
15-
Power Rail
24 V DCERR
7
9-
8+
10
12-
11+
mA
mA
mV
+
-
mV
+
-

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
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Potentiometer Input
Figure 4.4 Example proof test set-up for KFD2-UT2-(Ex)* (TC)
Usage in Zone 0, 1, 2/Div. 1, 2 only for KFD2-UT2-Ex1 and KFD2-UT2-Ex2
1-channel versions KFD2-UT2-1 and KFD2-UT2-Ex1 have only one channel.
The resistor values which are used to simulate the potentiometer shall be chosen
so that they represent the full scale value of the potentiometer when connected in
series. The individual resistors shall both be of the same resistance value and
have an accuracy of 1 %.
1. Connect two precision resistors in series.
2. Connect both open ends of the series resistors to the device (DUT) (channel I:
terminal 2 and 3, channel II: 5 and 6).
3. Connect the wiper input (channel I: terminal 1, channel II: terminal 4) to the
junction of the two simulation resistors.
4. Connect current meter/digital multimeter (DMM) to the current output
terminals 7 and 8 (channel I) and 10 and 11 (channel II).
5. Set the simulation resistor to 0 %, 50 % and 100 % of the potentiometer value
(see above).
6. Proof test is passed if the measured output values are within 2 % of the output
full scale. This means:
• 3.7 mA ... 4.3 mA, for 0 % of potentiometer value
• 11.7 mA ... 12.3 mA, for 50 % of potentiometer value
• 19.7 mA ... 20.3 mA, for 100 % of potentiometer value
Additionally the loop diagnosis shall be tested to prove that the fault signalling via
the current output is working correctly. The output current in the event of a failure
depends on the device configuration. Please record this configuration and the
resulting expected fault signalling current in the test report. Example: if downscale
is configured, 2.0 mA ±1 % must be measured in the event of a failure. The red
LED must be blinking.
KFD2-UT2-Ex2
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
2
3
1
5
6
4
24 V DC
14+
15-
Power Rail
24 V DCERR
7
9-
8+
10
12-
11+
mA
mA
0 % 50 % 100 %

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SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
Test Variation for Voltage Output/Current Sink Applications
Voltage Output
Instead of an current meter, a voltmeter has to be connected to the outputs. The
input values shall be chosen that they represent1V,2.5Vand5V.Theprooftest
is passed if the output values are within 2 % of the output span. This means:
■0.9 V ... 1.1 V
■2.4 V ... 2.6 V
■4.9 V ... 5.1 V
Current Sink Output Mode
The pass/fail criteria given for the current source output mode are also applicable
for the current sink output mode. Additionally to the above described test set up, a
voltage source has to be connected to the output (simulating the original
application).
Proof Test Coverage
The Proof Test Coveragedevice is assumed to be min. 90 %.
With λdu = 66 FIT (device), the proof test can reveal only 60 FIT.
4.3 Proof Test Procedure for HiD2082
Ge n e r a l
The proof test shall be performed with the same configuration which is used in the
application. The sensors shall be substituted by sensor simulator/calibrators.
Prove the safety function at input values which are configured to set the output to
4 mA, 12 mA, 20 mA.
Measurement set up:
■Sensor simulation/voltage source/resistor
■Current meter/digital multimeter (DMM)
■Termination Board