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Safety Manual
SD 174F/00/en/10.03
52021031
Guided Level-Radar
levelflex M
FMP 40/FMP 41C/FMP 45
for liquids and solids
with 4...20 mA output signal
Functional safety manual
FMP 45
FMP 40
FMP 41C
Application
Overspill protection or operating
maximum detection of all types of liquids
and solids in tanks to satisfy particular
safety systems requirements as per IEC
61508/IEC 61511-1(FDIS).
The measuring device fulfils the
requirements concerning
• Functional safety as per IEC 61508/
IEC 61511-1(FDIS)
• Explosion protection (depending on
the version)
• Electromagnetic compatibility as per
EN 61326 and NAMUR
recommendation NE 21.
Your benefits
• For overspill protection up to SIL 2
•
•
•
•
•
•
– Independently assessed (Functional
Assessment) by exida.com as per
IEC 61508/IEC 61511-1(FDIS)
Permanent self-monitoring
Continuous measurement
measurement is virtually independent
of product properties
Easy commissioning
Measurement is possible even at
strongly agitated surfaces and foam
suitable for bulk solids as well
Levelflex M
Table of contents
SIL declaration of conformity. . . . . . . . . . . . . . . . . . 3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General depiction of a safety system (protection function) 4
Structure of the measuring system with Levelflex M
(FMP 40, FMP 41C, FMP 45) . . . . . . . . . . . . . . . . . . . . . . . . 5
Settings and installation instructions . . . . . . . . . . . 7
Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Set-up instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Levelflex M for overfill protection operation . .
Configuration instructions on the signal processing unit . .
7
7
7
9
Response in operation and failure . . . . . . . . . . . . 10
Recurrent function tests of the measuring
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Specific values for the Levelflex M measuring system . . . 11
Exida Management Summary . . . . . . . . . . . . . . . . 13
2
Endress + Hauser
Levelflex M
SIL declaration of conformity
L00-FMR2xxxx-02-00-01-en-004
Endress + Hauser
3
Levelflex M
Introduction
General depiction of a
safety system (protection
function)
Parameter tables for determining Safety Integrity Level (SIL)
The following tables are used to define the achievable SIL or the requirements pertaining to the
“Average Probability of Dangerous Failure on Demand” (PFD av ),
the “Hardware Fault Tolerance” (HFT) and the “Safe Failure Fraction” (SFF) for the safety system.
The specific values for the Levelflex M measuring system can be found in the Appendix. Permitted
failure probability of the complete safety function dependent on the SIL for systems which must
react on demand (e.g. exceeding a defined max. level/switch point) (Source: IEC 61508, Part 1).
SIL
PFDav
4
≥ 10− 5...< 10− 4
3
≥ 10− 4...< 10− 3
2
≥ 10− 3...< 10− 2
1
≥ 10− 2...< 10− 1
The following table shows the achievable Safety Integrity Level (SIL) as a function of the
probability fraction of safety-oriented failures and the hardware fault tolerance of the complete
safety system for type B systems (complex components, for definition, see IEC 61508, Part 2).
SFF
0
1 (0)1
2 (1)1
not allowed
SIL 1
SIL 2
SIL 3
none:
< 60 %
low:
60 % ...< 90 %
SIL 1
SIL 2
Medium:
90% ...<99%
SIL 2
SIL 3
high:
≥ 99 %
SIL 3
1)
4
HFT
In accordance with IEC 61511-1 (FDIS) (Section 11.4.4), the HFT can be reduced by one (values in
brackets) if the devices used fulfil the following conditions:
- The device is proven in use,
- Only process-relevant parameters can be changed at the device (e.g. measuring range, ... ),
- Changing the process-relevant parameters is protected (e.g. password, jumper, ... ),
- The function requires less than SIL 4.
All conditions apply to Levelflex M.
Endress + Hauser
Levelflex M
Structure of the measuring
system with Levelflex M
(FMP 40, FMP 41C, FMP 45)
Level limit measuring system
The measuring system's devices are displayed in the following diagram (example).
- ToF Tool
- COMMUWIN II
Commubox
FXA 191
FMP 40
FMP 41C
FMP 45
4...20 mA
Logic Unit
e.g. PLC,
limit switch,
...
Actuator
ENDRESS + HAUSER
%
–
+
E
operating and
display module
VU 331
L00-FMPxxxxx-14-00-06-en-005
In the transmitter (Levelflex M), an analog signal (4...20 mA) in proportion to the level is generated.
This is sent to a downstream logic unit (e.g. PLC, limit signal transmitter, etc.) and monitored here
for max. value overshoot.
For fault monitoring, the logic unit must recognise both HI-alarms (≥ 21.5 mA) and LO-alarms (≤
3.8 mA).
The characteristic values determined (see Appendix) only apply to the following versions:
Endress + Hauser
FMP 40-
FMP40-#######B####
FMP40-#######G####
FMP40-#######H####
FMP 41C-
FMP41C-#####B#####
FMP41C-#####G#####
FMP41C-#####H#####
FMP 45-
FMP45-######B#####
FMP45-######G#####
FMP45-######H#####
5
Levelflex M
Safety function data
The mandatory settings and data for the safety function are based on the description on
Page 7 ff. and the Appendix.
The measuring system reacts in ≤ 5 s.
Note!
MTTR is set at 8 hours.
Supplementary device documentation
The following must be available for the measuring system:
Device
type
Operating Instructions
Description of device functions (on the CD supplied)
Brief Operating Instructions (in the device)
FMP 40
BA 242F/00/en
BA 245F/00/en
KA 189F/00/a2
FMP 41C
BA 276F/00/en
BA 245F/00/en
KA 189F/00/a2
FMP 45
BA 279F/00/en
BA 245F/00/en
KA 189F/00/a2
For devices with explosion-protection approval, the relevant Safety Instructions (XA) and/or
Control Drawings (ZD) must also be observed.
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Endress + Hauser
Levelflex M
Settings and installation instructions
Installation instructions
Please refer to the Operating Instructions (BA) provided for information on how to install Levelflex
M correctly, (see Table on Page 6).
Since the application conditions have an effect on the safety of the measurement, pay attention
to the notes in the Technical Information (TI) and Operating Instructions (BA).
Set-up instructions
Note!
Information as to which Operating Instructions (BA) apply to which device is provided in the Table
on Page 6.
Levelflex M can be configured in various ways:
• Local operation using the VU 331 LCD display
• Operation with the DXR 275 handheld terminal
• Remote operation via PC:
– with ToF-Tool (graphic operating program for E+H devices which work on the time-of-flight
principle)
– Commuwin II (graphic-supported operating program for intelligent devices)
Caution!
The reaction time of the device can be slowed down considerably when envelope curves are
being transmitted or mapping is activated. Suitable measures against overfilling should be
taken during this period.
Please refer to the appropriate Operating Instructions (BA) for further information on the settings.
Configuring
Levelflex M for overfill protection operation
Hardware locking should be enabled once the Levelflex M has been calibrated as per the
Operating Instructions (BA). To do so, press all 3 keys of the VU 331 LCD display at the same time
locally at the device.
Now the device can neither be configured nor unlocked via communication.
The device is unlocked by firstly removing the hardware lock by locally pressing all the three keys
together via the VU 331 LCD display and then by setting the “Overfill protection“ parameter (Pos.
018) to “Standard“ if necessary.
A measuring condition (echo) which results in an ALARM in the “Safety distance SD“ area can be
reset or deleted by
• confirming the ALARM in Pos. 017 locally by means of the VU 331 LCD display;
• confirming the alarm via the communication protocol (HART), (Commuwin II: Pos. V1 H7, ToFTool: “ackn. alarm“ under safety settings).
Note!
Altered settings (display/ToF Tool) in the “extended calibr.“ function group (Pos. 05 or
Commuwin II V4) such as “offset“ or such as "curr.turn down" (Pos. 063 or Commuwin II V5 H3) in
the “output“ function group have an effect on the output signal. This must be taken into account
when calculating the response height (see relevant Operating Instructions).
We recommend you check that the behaviour of the current signal matches the expected
behaviour by means of level simulation (see BA), (correctness of configuration).
Endress + Hauser
7
Levelflex M
Configuration schemata/basic calibration
ToF Tool/Display - plain text display
Tank properties
↓
Medium property
↓
Process conditions
↓
End of probe
↓
Lenght adjustment
↓
Empty calibration E
↓
Full calibration F
↓
Mapping
↓
Further settings
Function group 05
↓
Overspill protection
WHG
↓
On site: 3 keys pressed on the display VU 331
1)
Display VU 331
Position
002
003
004
030
031
005
006
See BA 1
See BA
05
1
018
Yes
BA = Operating Instructions
Locking
Type of locking
Hardware
recommended
Code/action
3 keys together
"lock"
Position/VU 331 display
Commuwin II
Locally via VU 331 display
(keys O and S and F )
3 keys together
"unlock"
Locally via VU 331 display
(keys O and S and F )
Standard
018
Unlocking
Hardware1
↓
Software
1)
8
V1 H8
if locked
Endress + Hauser
Levelflex M
With the “WHG“ setting in 018, the following parameters can be safety oriented as follows,
regardless of values already set:
ToF Tool/Display - plain text
display
Safety settings
output on ALARM
outp. echo loss
delay time
in safety distance
Filtering/averaging/delay
Hüllkurvenstatistik
MAM filt. length
MAM filt. border
output damping
Echo detection
threshold near
threshold attenuation constant
threshold far
EOP evaluation
EOP in upper area
First echo factor
Max. filling speed
Max. drain speed
Other
Hysterese width
Communication address
Current output mode
Simulation
Value/parameter
Display Commuwin II Comment
VU 331
Max. 110 %, 22 mA
ALARM
1s
Self-retaining
010
012
014
016
V1 H0
V1 H2
V1 H4
V1 H6
1
1
2
4
0
5
1
0
0D21
0D11
0D12
058
V72 H1
V71 H1
V71 H2
V4 H8
3
3
3
3
0.04*0D85, if "Tank properties"
(002) = coax
probe (4), 0.07*0D85,
otherwise
= 0D86
0.04*0D87, if "Tank properties"
(002) = coax
probe (4), 0.07*0D87,
otherwise
On
echo preferred (factory setting)
6 dB
0 mm/s (factory setting)
0 mm/s (factory setting)
0D35
V73 H5
4
0D36
0D37
V73 H6
V73 H7
4
4
0D61
0D62
0D51
0D15
0D16
V76 H1
V76 H2
V75 H1
V71 H5
V71 H6
4
1, 5
4
1
1
0D14
060
063
V71 H4
V5 H0
V5 H3
1
1
1
065
V5 H5
1
0 mm (factory setting)
0
"Standard" if previously "fixed current"
Sim. / OFF
Comments:
1 This parameter must be configured in this way.
2 This parameter determines the reaction time of the device in the event of echo loss; a setting of less than
30 s is recommended.
3 This parameter determines the reaction time of the device; deviating settings are possible. In the event of
changes in "process cond." (004), it is automatically adjusted. The corresponding reaction time is indicated in the documentation BA 245 F.
4 This parameter can be selected differently, depending on the application"
5 In the "Tank properties" function (002), "aluminium tank" may not be used!
Note!
This parameters highlighted in bold (for VU 331 display and Commuwin II) are on the Service level
which can only be opened with a specific code.
Instead of activating the "WHG" setting, safety-oriented configuration can also be done manually
as per the "Comment" column.
Configuration instructions
on the signal processing
unit
Endress + Hauser
Configuration instructions when using the level sensor as the continuous measuring system
When using the level sensor as the continuous measuring system, the limit value determined
appropriately must be entered at the downstream limit monitor (logic unit).
All calibration and configuration work must be carried out as specified in the associated
Operating Instructions.
9
Levelflex M
Response in operation and failure
Note!
The behaviour during operation and in the event of errors is described in the device
documentation, (see Table on Page 6).
Recurrent function tests of the measuring system
The operativeness of the overfill protection must be checked at regular intervals (see Appendix).
We recommend you carry out the inspection at least once a year. The onus is on the owneroperator to select the type of inspection and the time intervals in the specified period.
The check must be carried out in such a way that it is proven that the overfill protection functions
perfectly in interaction with all components. This is guaranteed when the response height is
approached in a filling process. If it is not practical to fill to the response height, suitable simulation
of the level or of the physical measuring effect must be used to make the level sensor respond. If
the operativeness of the level sensor/transmitter can be determined otherwise (exclusion of faults
that impair function), the check can also be completed by simulating the corresponding output
signal.
10
Endress + Hauser
Levelflex M
Appendix
Specific values for the
Levelflex M measuring system
The Tables show the specific safety-related characteristic values for the Levelflex M measuring
system.
Specific values with 2-wire electronics
Levelflex M
FMP 40, FMP 41C, FMP 45
MAX
MAX
SIL
SIL 2
SIL 2
HFT
0
0
SFF
> 72 %
> 72 %
PFDav
≤ 0.32 x 10-2
≤ 0.65 x 10-2
Complete function test by approaching the level, for example
Annually1
every 2 years1
1)
see the following graphic for other values
Probability
1oo1D structure
3,50E-02
3,00E-02
2,50E-02
2,00E-02
1,50E-02
1,00E-02
5,00E-03
0,00E+00
0,0
2,0
4,0
6,0
PFDavg
8,0
10,0
Years
L00-FMP40xxx-05-00-00-en-009
Endress + Hauser
11
Levelflex M
Specific values with 4-wire electronics
Levelflex M
FMP 40, FMP 41C, FMP 45
MAX
MAX
SIL
SIL 2
SIL 2
HFT
0
0
SFF
> 87 %
PFDav
≤ 0.14 x 10
Complete function test by approaching the level, for example
Annually1
1)
> 87 %
≤ 0.28 x 10-2
-2
every 2 years1
see the following graphic for other values
Probability
1oo1D structure
1,60E-02
1,40E-02
1,20E-02
1,00E-02
8,00E-03
6,00E-03
4,00E-03
2,00E-03
0,00E+00
0,0
2,0
4,0
6,0
PFDavg
8,0
10,0
Years
L00-FMP40xxx-05-00-00-en-010
12
Endress + Hauser
Levelflex M
Exida Management Summary
Endress + Hauser
13
Levelflex M
14
Endress + Hauser
Levelflex M
Endress + Hauser
15
Levelflex M
Endress+Hauser GmbH+Co.
Instruments International
P.O. Box 2222
D-79574 Weil am Rhein
Germany
Tel. (07621) 975-02
Tx 773926
Fax (07621) 975 345
e-mail: [email protected]
Internet:
http://www.endress.com
11.01
SD 174F/00/en/10.03
52021031
FM+SGML 6.0 ProMoDo