Endress+Hauser Prosonic S FMU90 Technical specifications

Products Solutions Services
KA01068F/00/EN/02.16
71308093
Brief Operating Instructions
Prosonic S FMU90
Flow Measurement
Backwater and Dirt Detection
Totalizers and Counters
These Instructions are Brief Operating Instructions; they are not
a substitute for the Operating Instructions pertaining to the
device.
Detailed information about the device can be found in the
Operating Instructions and the other documentation:
Available for all device versions via:
– Internet: www.endress.com/deviceviewer
– Smart phone/tablet: Endress+Hauser Operations App

Prosonic S FMU90 Flow Measurement PROFIBUS
2Endress+Hauser
A0023555
1.
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
2.
3.

Prosonic S FMU90 Flow Measurement PROFIBUS Table of contents
Endress+Hauser 3
Table of contents
1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning, operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Operational safety and process safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Safety symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Incoming acceptance, storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Mounting the remote display and operating module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Mounting of the sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5 Installation check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.1 Terminal compartment of the field housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Terminal compartment of the DIN-rail housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Sensor connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.5 Connection of the sensor heater (for FDU90/FDU91) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.6 Connection of external switches (for FMU90-********B***) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7 Connection of a temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.8 Synchronization line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.9 Connection of the separate display and operating module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10 Potential equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.11 Post-connection check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
4.1 Operating options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2 Operation via the display and operating module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
5.1 Setting the device address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.2 Bus termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.3 Loading the device database and type files (GSD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.4 First setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.5 Basic setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.6 Overview basic setup for a flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.7 Overview basic setup for level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Safety Instructions Prosonic S FMU90 Flow Measurement PROFIBUS
4Endress+Hauser
1 Safety Instructions
1.1 Designated use
The Prosonic S FMU90 is a transmitter for the ultrasonic sensors FDU90, FDU91, FDU91F,
FDU92, FDU93 and FDU951). The sensors of the class FDU8x can be connected as well.
1.2 Installation, commissioning, operation
The Prosonic S is fail-safe and constructed to the state-of-the-art. It meets the appropriate
standards and EC directives. However, if you use it improperly or other than for its designated
use, it may pose application-specific hazards, e.g. product overflow due to incorrect installation
or configuration. Installation, electrical connection, start-up, operation and maintenance of the
measuring device must therefore be carried out exclusively by trained specialists authorised by
the system operator. Technical personnel must have read and understood these operating
instructions and must adhere to them. You may only undertake modifications or repair work to
the device when it is expressly permitted by the operating instructions.
1.3 Operational safety and process safety
• Alternative monitoring measures must be taken to ensure operational safety and process
safety during configuration, testing and maintenance work on the device.
• The device is safely built and tested according to state-of-the-art technology and has left the
factory in perfect condition as regards technical safety. The applicable regulations and
European standards have been taken into account.
• Pay particular attention to the technical data on the nameplate.
• If the device is to be installed in an explosion hazardous area, then the specifications in the
certificate as well as all national and local regulations must be observed. The device is
accompanied by separate "Ex documentation", which is an integral part of this Operating
Instructions. The installation regulations, connection values and Safety Instructions listed in
this Ex document must be observed. The documentation number of the related Safety
Instructions is also indicated.
• If using devices for applications with safety integrity level, the separate manual on functional
safety must be observed thoroughly.
1.4 Return
Follow the instructions on returning the device as outlined in the Operating Instructions
BA00293F or on www.endress.com.
1) The sensors FDU80/80F/81/81F/82/83/84/85/86/96 are not available anymore.
The sensors FDU83, FDU84, FDU85 and FDU86 with an ATEX, FM or CSA certificate are
not certified for connection to the FMU90 transmitter.

Prosonic S FMU90 Flow Measurement PROFIBUS Safety Instructions
Endress+Hauser 5
1.5 Safety symbols
Symbol Meaning
A0011189-DE
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
A0011190-DE
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
A0011191-DE
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
A0011192-DE
NOTICE!
This symbol contains information on procedures and other facts which do not result in personal
injury.
Explosion protection Meaning
0Device certified for use in explosion hazardous area
If the device has this symbol embossed on its name plate it can be installed in an explosion
hazardous area
-Explosion hazardous area
Symbol used in drawings to indicate explosion hazardous areas. Devices located in and wiring
entering areas with the designation “explosion hazardous areas” must conform with the stated
type of protection.
.Safe area (non-explosion hazardous area)
Symbol used in drawings to indicate, if necessary, non-explosion hazardous areas. Devices
located in safe areas still require a certificate if their outputs run into explosion hazardous areas
DANGER
WARNING
CAUTION
NOTICE

Mounting Prosonic S FMU90 Flow Measurement PROFIBUS
6Endress+Hauser
2Mounting
2.1 Incoming acceptance, storage
2.1.1 Incoming acceptance
Check the packing and contents for any signs of damage. Check the shipment, make sure
nothing is missing and that the scope of supply matches your order.
2.1.2 Storage
Pack the measuring instrument so that is protected against impacts for storage and transport.
The original packing material provides the optimum protection for this.
The permissible storage temperature is -40 to +60 °C (-40 to +140 °F).
2.2 Installation
2.2.1 Installation conditions of the field housing
Weather protection
In order to avoid excessive sunlight exposure, the instrument should be mounted in a position
which is protected against direct sunlight or a protection cover should be applied.
Overvoltage protection
In order to protect the Prosonic S against overvoltage (especially if mounted outdoors),
connection of an overvoltage protection is recommended.
Pipe mounting
A mounting plate is available for mounting of the field housing to 1" to 2" pipes.
Wall mounting
A mounting help for wall mounting is supplied. It also serves as drilling template. The mounting
help should be mounted on a flat surface and may not become distorted.

Prosonic S FMU90 Flow Measurement PROFIBUS Mounting
Endress+Hauser 7
L00-FMU90xxx-17-00-00-xx-003
Wall mounting with mounting help (1)
2.2.2 Installation conditions of the DIN-rail housing
• The DIN-rail housing must be mounted outside hazardous areas in a cabinet.
• The housing is mounted on a DIN rail EN 60715 TH 35 x 7.5 or TH 37 x 15.
• Do not install the instrument in the vicinity of high-voltage lines, motor lines, contactors or
frequency converters. The installation regulations for high-voltage lines, motor lines,
contactors or frequency converters must be observed.
• To ensure easy mounting and opening of the housing, a distance of approx. 10 mm (0.39 in)
should be kept between the instruments.
• In order to avoid interference, do not route the sensor cables parallel to high-voltage or
electric power lines and not close to frequency converters.
1. 2. 3.
4.
1
Further information: Operating Instructions for Prosonic S FMU90, document number
BA00293F.
You will find this document in the Download Area of the Endress+Hauser Internet site.

Mounting Prosonic S FMU90 Flow Measurement PROFIBUS
8Endress+Hauser
L00-FMU90xxx-17-00-00-xx-001
AMounting
BDemounting
2.3 Mounting the remote display and operating module
2.3.1 Scope of delivery
If the Prosonic S is ordered with the display for cabinet door mounting, the following is
contained in the scope of delivery:
• Display and operating module 96 x 96 mm (3.78 x 3.78 in)
• 4 retainers (with nuts and screws) →ä9 "Mounting"
• Connection cable (3 m (9.8 ft) ) for connection to the transmitter
(preassembled with suitable plugs).
2.3.2 Dimensions
L00-FMU90xxx-06-00-00-xx-004
AB
1.
2.
1.
2.
EN 60715
TH 35x7.5/15
(1.4x0.3/0.6)
The dimensions are described in this document: Technical Information for Prosonic S
FMU90, document number TI00397F.
You will find this document in the Download Area of the Endress+Hauser Internet site.
96
55
max. 6
92
min. 11
~0,5 kg (1.10 lbs)
(0.43)
(3.62)
(0.24)
(3.78)
(2.17)
mm (in)

Prosonic S FMU90 Flow Measurement PROFIBUS Mounting
Endress+Hauser 9
2.3.3 Mounting
L00-FMU90xxx-17-00-00-xx-002
2.3.4 Adaption plate
If an opening of 138 x 138 mm (5.43 x 5.43 in) and the remote display of the Prosonic
FMU860/861/862 are already present, you can use the adaption plate (Order Code:
52027441). The adapter plate can be mounted directly in the housing of the old remote display
of the FMU86x series.
Further information: Operating Instructions for Prosonic S FMU90, document number
BA00293F.
You will find this document in the Download Area of the Endress+Hauser Internet site.
The housing of the remote display of the FMU86x is the holder for the adapter plate and
the new remote display of the FMU90/FMU95 in the format 96 x 96 mm
(3.78 x 3.78 in).
1.
3. 4.
2.

Mounting Prosonic S FMU90 Flow Measurement PROFIBUS
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L00-FMU90xxx-06-00-00-xx-006
1 Remote display of the FMU90 with adaption plate
2 Opening of the remote display of the FMU860/861/862
2.4 Mounting of the sensors
Information on the mounting of the sensors2) can be found in the following documents:
• Technical Information TI00189F (for FDU8x)
• Technical Information TI00396F (for FDU9x)
These documents are supplied with the sensors.
2.5 Installation check
After installing the device, carry out the following checks:
• Is the device damaged (visual inspection)?
• Does the device correspond to the measuring point specifications such as process
temperature, process pressure, ambient temperature, measuring range, etc.?
• If available: Are the measuring point number and labelling correct?
• Is the instrument sufficiently protected against rainfall and direct sunlight?
• For the field housing: Are the cable glands tightened correctly?
• Is the instrument securely mounted to the DIN rail or the mounting help (visual inspection)?
• For the field housing: Are the screws of the terminal compartment cover securely tightened
(visual inspection)?
1
2
2) The sensors FDU80/80F/81/81F/82/83/84/85/86/96 are not available anymore.

Prosonic S FMU90 Flow Measurement PROFIBUS Wiring
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3Wiring
WARNING
!
Risk of electric shock!
Voltage at the terminals.
‣Switch off the supply voltage before connecting the device.
‣In a wet environment, do not open the cover if voltage is present.
3.1 Terminal compartment of the field housing
The field housing has a separate terminal compartment. It can be opened after loosening the
four screws of the lid.
L00-FMU90xxx-04-00-00-xx-002
For easier wiring, the lid can be completely removed by unplugging the display plug and
loosening the hinges:
L00-FMU90xxx-04-00-00-xx-009
1.
2.
3.
1.
2.

Wiring Prosonic S FMU90 Flow Measurement PROFIBUS
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3.1.1 Cable entries of the field housing
The following openings for cable entries are prestamped on the bottom of the housing:
M20x1.5 (10 openings), M16x1.5 (5 openings), M25x1.5 (1 opening).
The required number and types of cable entries depend on the application at hand.
3.2 Terminal compartment of the DIN-rail housing
3.2.1 Single instrument
L00-FMU90xxx-04-00-00-xx-003
1. 2.

Prosonic S FMU90 Flow Measurement PROFIBUS Wiring
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3.2.2 Several instruments mounted side by side
L00-FMU90xxx-04-00-00-xx-012
• The cables can be inserted into the housing from above or from below.
• The pictures show the smallest housing version but are valid for the larger versions as well.
• If the instruments are mounted next to each other and if the sensor cables run in parallel, the
synchronization terminals (39 and 40) must be interconnected (→ä14, "Terminal
assignment" and →ä24, "Synchronization line").
1.
2.
3.

Wiring Prosonic S FMU90 Flow Measurement PROFIBUS
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3.3 Terminal assignment
Pluggable spring-force terminals for connection of the cables are supplied in the terminal
compartment. Rigid conductors or flexible conductors with cable sleeve can directly be inserted
and are contacted automatically.
The terminal configuration depends on the instrument version ordered. There is a basic
terminal area, which is present in every instrument version. Additional optional terminal areas
are only present if the respective option has been selected in the product structure.
Feature Value
Conductor cross section 0.2 mm2to 2.5 mm2(26 to 14 AWG)
Cable and sleeve cross section 0.25 mm2to 2.5 mm2 (26 to 14 AWG)
Min. stripping length 10 mm (0.39 in)
Terminal area present for the following instrument versions
Basic area A For all versions
Optional areas
BFor instrument versions with 2 sensor inputs and/or 2 analogue outputs
(FMU90 - *****2****** and/or FMU90 - *******2****)
CFor instrument versions with 3 or 6 relays
(FMU90 - ******3***** or FMU90 - ******6*****)
DFor instruments with external switch inputs and external temperature input
(FMU90 - ********B***)
EFor instrument versions with PROFIBUS DP interface
(FMU90 - *******3****)

Prosonic S FMU90 Flow Measurement PROFIBUS Wiring
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L00-FMU90xxx-04-00-00-xx-001
Terminals of the Prosonic S (the terminals depicted in grey are not present in every instrument version)
A Basic terminal area
B-E Optional terminal areas (present if the respective option has been selected in the product structure)
FDU-
Sensor
0/4...20mA
1
42
41
Relay
55
52 54
51 53
50
3
Address
Term.
DP
off
on
off
on
SW
HW
1
2
3
4
5
6
7
8
1
2
3
4
A(N)
66
B(P)
65
Display
POWER
HART
0/4…20mA
Sync
Fuse
I1FDU-
Sensor
RD
11
BK
10
YE
9
40
39
5
4
67
8
11
Service
Relay
32
1
ABCE
2
58
5756
4
61
6059
5
64
6362
6
RD
11
BK
10
YE
9
2
RD
14
BK
13
YE
12
I2
FDU-
Sensor
DigIn
76
73 75
72 74
71
2
D
1
79
7877
3
82
8180
4
85
8483
Temp.
The depicted switching states of the relays refer to the de-energized state.

Wiring Prosonic S FMU90 Flow Measurement PROFIBUS
16 Endress+Hauser
Terminals Meaning Terminal area Remarks
Auxiliary energy
1• L (for AC version)
• L+ (for DC version) ADepending on instrument version:
• 90 to 253 VAC
• 10.5 to 32 VDC
2 • N (for AC version)
• L- (for DC version)
A
3 Potential equalization A
Fuse A Depending on instrument version:
• 400 mA T (for AC)
•2AT(forDC)
Analog outputs (not available for Profibus DP instruments)
4, 5
Analog output 1;
4 to 20 mA with HART/
0 to 20 mA w/o HART
ANot present for the PROFIBUS DP version
41, 42
Analog output 2 (optional);
4 to 20 mA/
0 to 20 mA
B
Only for the version with two analog
outputs;
no HART signal at this output
Relay outputs
6, 7, 8 Relay 1 A
50, 51, 52 Relay 2 (optional) C Only for the versions with 3 or 6 relays
53, 54, 55 Relay 3 (optional) C Only for the versions with 3 or 6 relays
56, 57, 58 Relay 4 (optional) C Only for the version with 6 relays
59, 60, 61 Relay 5 (optional) C Only for the version with 6 relays
62, 63, 64 Relay 6 (optional) C Only for the version with 6 relays
Bus communication (only available for Profibus DP instruments)
65 PROFIBUS A (RxT/TxD - N) D Only for the PROFIBUS DP version
66 PROFIBUS B (RxT/TxD - P) D
Synchronization
39, 40 Synchronization A →ä24, "Synchronization line"
Level inputs
9 (YE),
10 (BK),
11 (RD)
Sensor 1 (FDU8x/9x)
YE: yellow strand
BK: black strand
RD: red strand
• A: for versions with 1 sensor input
• B: for versions with 2 sensor inputs1)
12 (YE),
13 (BK),
14 (RD)
Sensor 2 (FDU8x/9x) (optional)
YE: yellow strand
BK: black strand
RD: red strand
B Only for the version with 2 sensor inputs

Prosonic S FMU90 Flow Measurement PROFIBUS Wiring
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CAUTION
!
Limitation of electrical safety.
‣When using the public supply mains, an easily accessible power switch must be installed in
the proximity of the device. The power switch must be marked as a disconnector for the
device (IEC/EN 61010).
External switch inputs
71, 72, 73 External switch input 1 D 0: < 8 V or 72 and 73 interconnected
1: > 16 V or 72 and 73 not interconnected
74, 75, 76 External switch input 2 D 0: < 8 V or 75 and 76 interconnected
1: > 16 V or 75 and 76 not interconnected
77, 78, 79 External switch input 3 D 0: < 8 V or 78 and 79 interconnected
1: > 16 V or 78 and 79 not interconnected
80, 81, 82 External switch input 4 D 0: < 8 V or 81 and 82 interconnected
1: > 16 V or 81 and 82 not interconnected
Temperature input
83, 84, 85 Temperature input:
• PT100
• FMT131 (Endress+Hauser)
D→ä21, "Connection of a temperature
sensor"
1) In this case, terminals 9/10/11 are not present on terminal area A.
In order to avoid interference, do not route the sensor cables parallel to high-voltage or
electric power lines and not close to frequency converters.
Terminals Meaning Terminal area Remarks

Wiring Prosonic S FMU90 Flow Measurement PROFIBUS
18 Endress+Hauser
Additional elements on the terminal areas
WARNING
!
Risk of electric shock!
Voltage at the terminals.
‣Switch off the supply voltage before connecting the device.
‣In a wet environment, do not open the cover if voltage is present.
3.4 Sensor connection
Information on the mounting of the sensors3) can be found in the following documents:
• Technical Information TI00189F (for FDU8x)
• Technical Information TI00396F (for FDU9x)
These documents are supplied with the sensors.
Designation Meaning/Remarks
Fuse Fuse: 2 A T /DC or 400 mA T/AC
Display Connection of the display or the remote display and operating module
Service Service interface for connection of a PC/Notebook via Commubox FXA291
Locking switch
Term. Bus termination (only applicable for instruments with PROFIBUS interface)
Address Bus address (only applicable for instruments with PROFIBUS interface)
• Basic information on the cyclic data exchange between the measuring instrument and
an automation system (e.g. PLC) are described in this document: Operating
Instructions "PROFIBUS DP/PA - Guidelines for planning and commissioning",
document number BA00034S.
• Further information: Operating Instructions for Prosonic S FMU90, document number
BA00293F.
3) The sensors FDU80/80F/81/81F/82/83/84/85/86/96 are not available anymore.

Prosonic S FMU90 Flow Measurement PROFIBUS Wiring
Endress+Hauser 19
3.5 Connection of the sensor heater (for FDU90/FDU91)
The FDU90 and FDU91 sensors are available in a version with heater. For more information and
details, see the Technical Information TI00396F that is delivered with the sensors.
3.5.1 Connection in the field housing
For the sensor with heater, a special terminal module is supplied for the connection of the
supply voltage. This terminal module can be inserted into the field housing:
L00-FMU90xxx-04-00-00-xx-013
1 Terminal module for the sensor heater
2 External power supply unit
3 Brown strand (BN)
4Bluestrand(BU)
Display
POWER
HART
0/4…20mA
Sync
Fuse
I1FDU-
Sensor
RD
11
BK
10
YE
9
40
39
5
4
6
7
8
Service
Relay
3
2
1
4
FDU90
FDU91
1
1
3
24 VDC
+-
2
RD
BK
YE
ABCD
A+
BBN
C-
DBU

Wiring Prosonic S FMU90 Flow Measurement PROFIBUS
20 Endress+Hauser
3.5.2 Connection in the DIN-rail housing
The supply voltage must be provided in the cabinet, e.g. by a terminal on the DIN-rail:
L00-FMU90xxx-04-00-00-xx-014
The terminal module supplied with the sensor can also be used for connection of the
supply voltage. For the terminal assignment on this module see →ä19.
Display
HART
0/4…20mA
Sync
Fuse
I1FDU-
Sensor
RD
11
BK
10
YE
9
40
39
5
4
6
7
8
Service
Relay
FMU90
LN
24 VDC
POWER
3
2
1
FDU90
FDU91
+-
BN BU
RD
BK
YE