Siemens 7MJ2000-1A 00 Series User manual

Introduction 1
General safety notes
2
Description
3
Mounting
4
Connecting
5
Operation
6
Signal processing
7
Commissioning
8
Technical Data
9
Dimension drawings
10
PROFIBUS DP
11
SITRANS
Process monitoring
SITRANS DA400 for oscillating
positive displacement pumps
Operating Instructions
09/2008
A5E00841120-03
7MJ2400-1AA01 device
7MJ2000-1A*00 sensor

Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
CAUTION
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
NOTICE
indicates that an unintended result or situation can occur if the corresponding information is not taken into
account.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The device/system may only be set up and used in conjunction with this documentation. Commissioning and
operation of a device/system may only be performed by qualified personnel. Within the context of the safety notes
in this documentation qualified persons are defined as persons who are authorized to commission, ground and
label devices, systems and circuits in accordance with established safety practices and standards.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be adhered to. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this
publication may be trademarks whose use by third parties for their own purposes could violate the rights of the
owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Ordernumber: A5E00841120
Ⓟ 08/2008
Copyright © Siemens AG 2008.
Technical data subject to change

SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 3
Table of contents
1 Introduction................................................................................................................................................ 7
1.1 Purpose of this documentation ......................................................................................................7
1.2 History............................................................................................................................................7
1.3 Further information.........................................................................................................................8
1.4 CE label..........................................................................................................................................9
2 General safety notes................................................................................................................................ 11
2.1 General information .....................................................................................................................11
2.2 Correct usage...............................................................................................................................11
2.3 Laws and directives .....................................................................................................................11
2.4 Measures .....................................................................................................................................12
2.5 Qualified Personnel......................................................................................................................12
3 Description............................................................................................................................................... 13
3.1 Applications..................................................................................................................................13
3.2 Operation .....................................................................................................................................13
3.3 Layout ..........................................................................................................................................14
3.3.1 Device structure ...........................................................................................................................14
3.3.2 Structure of the nameplate...........................................................................................................15
3.4 Mode of operation ........................................................................................................................16
3.4.1 Measuring principle......................................................................................................................16
3.4.2 Principle of measurement with trigger sensor..............................................................................19
3.4.3 Sensor operation..........................................................................................................................20
3.4.4 Operation of the electronics.........................................................................................................21
4 Mounting.................................................................................................................................................. 23
4.1 Safety information for installation.................................................................................................23
4.2 Mounting the device.....................................................................................................................24
4.3 Installation notes for acoustic emission sensors..........................................................................24
4.4 Installation notes for trigger sensors............................................................................................25
5 Connecting .............................................................................................................................................. 27
5.1 Safety notes and conditions.........................................................................................................27
5.2 Terminal assignment....................................................................................................................28
5.3 Cable gland..................................................................................................................................29
5.4 Connecting acoustic emission sensors........................................................................................30
5.5 Connecting digital outputs............................................................................................................30
5.6 Connecting signal inputs..............................................................................................................31

Table of contents
SITRANS DA400 for oscillating positive displacement pumps
4 Operating Instructions, 09/2008, A5E00841120-03
5.7 Connecting PROFIBUS DP.........................................................................................................33
5.8 Connecting the power supply...................................................................................................... 34
6 Operation................................................................................................................................................. 35
6.1 Overview of digital display and buttons....................................................................................... 35
6.2 Digital display .............................................................................................................................. 37
6.3 Measuring menu ......................................................................................................................... 38
6.3.1 Overview and digital display in the measuring menu.................................................................. 38
6.3.2 Measurement channel list ........................................................................................................... 39
6.3.3 Operating the measuring menu .................................................................................................. 39
6.3.4 Acoustic channels ....................................................................................................................... 41
6.3.4.1 Measuring mode ......................................................................................................................... 41
6.3.4.2 Simulation mode ......................................................................................................................... 43
6.3.4.3 Test mode ................................................................................................................................... 45
6.3.5 Universal inputs........................................................................................................................... 47
6.3.5.1 Analog input ................................................................................................................................ 47
6.3.5.2 Digital input ................................................................................................................................. 48
6.3.5.3 Trigger input ................................................................................................................................ 49
6.4 Parameter menu ......................................................................................................................... 50
6.4.1 Parameter menu overview .......................................................................................................... 50
6.4.2 Parameter list .............................................................................................................................. 51
6.4.3 Setting parameters...................................................................................................................... 54
6.4.4 Displaying the software version .................................................................................................. 54
6.4.5 Parameter lock ............................................................................................................................ 55
6.5 Trace menu ................................................................................................................................. 56
6.5.1 Trace menu overview.................................................................................................................. 56
6.5.2 Trace menu list............................................................................................................................ 57
6.5.3 Displaying and resetting timers................................................................................................... 59
6.6 Examples..................................................................................................................................... 60
6.6.1 Example Acoustic channel 1....................................................................................................... 60
6.6.2 Example universal input 1........................................................................................................... 61
7 Signal processing .................................................................................................................................... 63
7.1 Evaluating acoustic channels...................................................................................................... 63
7.2 Evaluation of universal inputs ..................................................................................................... 66
7.2.1 Universal input evaluation overview............................................................................................66
7.2.2 Evaluation of analog current signals ...........................................................................................66
7.2.3 Evaluation of 24 V digital signals ................................................................................................ 68
7.2.4 Evaluation of digital signals in line with NAMUR ........................................................................ 69
7.2.5 Evaluation trigger signal.............................................................................................................. 70
7.3 Processing input faults ................................................................................................................ 73
7.4 Activation of digital outputs ......................................................................................................... 73
7.5 Alarm acknowledgement............................................................................................................. 76
7.6 Trace function ............................................................................................................................. 77
8 Commissioning ........................................................................................................................................ 79
8.1 Overview ..................................................................................................................................... 79
8.2 Recommendation for the selection of parameters ...................................................................... 80
8.2.1 Preparation.................................................................................................................................. 80

Table of contents
SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 5
8.2.2 Measuring sensitivity of the acoustic channels via parameters P.1 to P.4..................................81
8.2.3 Main alarm threshold via parameters P.6, P.8, P.10 and P.12....................................................81
8.2.4 Pre-alarm threshold via parameters P.5, P.7, P.9 and P.11........................................................81
8.2.5 Response time via parameter P.13 .............................................................................................82
8.2.6 Alarm storage via parameter P.14 ...............................................................................................82
8.2.7 Application via parameter P.39....................................................................................................82
8.2.8 Number of strokes of the pump via parameter P.40....................................................................83
8.2.9 Closing angles of suction valves P.45 to P.49.............................................................................83
8.2.10 Check installation and configuration ............................................................................................83
8.2.11 Commissioning after a repair.......................................................................................................83
9 Technical Data......................................................................................................................................... 85
9.1 Technical data for the device.......................................................................................................85
9.2 Application-specific use limits ......................................................................................................87
9.3 Technical data for the sensor.......................................................................................................87
10 Dimension drawings ................................................................................................................................ 89
10.1 Dimension drawing of the device.................................................................................................89
10.2 Dimension drawing of the sensor.................................................................................................90
11 PROFIBUS DP ........................................................................................................................................ 91
11.1 Overview ......................................................................................................................................91
11.2 Measured value and status format ..............................................................................................94
11.3 Meaning of 8 byte binary status signals.......................................................................................94
11.4 Read/write parameters.................................................................................................................97
11.5 Examples for PROFIBUS DP.......................................................................................................98
11.6 Index of objects............................................................................................................................99
Index...................................................................................................................................................... 103

Table of contents
SITRANS DA400 for oscillating positive displacement pumps
6 Operating Instructions, 09/2008, A5E00841120-03

SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 7
Introduction 1
1.1 Purpose of this documentation
These instructions contain all the information you need for commissioning and using the
device.
It is aimed both at persons mechanically installing the device, connecting it electronically,
configuring the parameters and commissioning it as well as service and maintenance
engineers.
1.2 History
This history establishes the correlation between the current documentation and the valid
firmware of the device.
The documentation of this edition is applicable for the following firmware:
Edition Firmware ID
03
09/2008
FW: V3.01.**
The most important changes in the documentation when compared with the respective
previous edition are given in the following table.
Edition Remark
01
11/2006
First edition
02
09/2007
Functional expansion trigger sensor
03
09/2008
Chapter "11.3 Meaning of 8 byte binary status signals" added

Introduction
1.3 Further information
SITRANS DA400 for oscillating positive displacement pumps
8 Operating Instructions, 09/2008, A5E00841120-03
1.3 Further information
Information
The contents of these instructions shall not become part of or modify any prior or existing
agreement, commitment or legal relationship. All obligations on the part of Siemens AG are
contained in the respective sales contract which also contains the complete and solely
applicable warranty conditions. Any statements contained herein do not create new
warranties or modify the existing warranty.
The content reflects the technical status at the time of printing. We reserve the right to make
technical changes in the course of further development.
Siemens Regional Offices
If you need more information or have particular problems which are not covered sufficiently
by the operating instructions, contact your local Siemens Regional Office. You will find the
address of your local Siemens Regional Office on the Internet.
Product information on the Internet
The Programming Manual is an integral part of the companion CD, which may be ordered
separately. In addition, the Programming Manual is available on the Internet on the Siemens
homepage.
On the CD you will also find the technical data sheet containing the ordering data, the Device
Install software for SIMATIC PDM for subsequent installation and the required software.
See also
Siemens Regional Offices (https://www.siemens.com/processinstrumentation/contacts)
Product information on SITRANS DA in the Internet (http://www.siemens.com/sitransda)
Instructions and Manuals (http://www.siemens.com/processinstrumentation/documentation)

Introduction
1.4 CE label
SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 9
1.4 CE label
This device meets the requirement of EU guidelines:
● 89/336/EEC Guideline of the Council on Aligning Legal Regulations of Member States on
Electromagnetic Compatibility (EMV). Revised by
– 91/263/EEC
– 92/31/EEC
– 93/68/EEC
● 94/9/EC Guideline of the European Parliament and the Council on Aligning Legal
Regulations of the Member States on Devices and Protective Systems for defined use in
areas subject to explosion.
This is communicated by the CE label.
D-76181 Karlsruhe

Introduction
1.4 CE label
SITRANS DA400 for oscillating positive displacement pumps
10 Operating Instructions, 09/2008, A5E00841120-03

SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 11
General safety notes 2
2.1 General information
This device left the factory free from safety problems. In order to maintain this status and to
ensure safe operation of the device, please observe the safety information and warnings
contained in these instructions.
2.2 Correct usage
The device may only be used for the purposes specified in these instructions.
Insofar as they are not expressly stated in these instructions, all changes to the device are
the sole responsibility of the user.
2.3 Laws and directives
Observe the test certification, provisions and laws applicable in your country during
connection, assembly and operation.
For hazardous areas, these are for example:
● IEC 60079-14 (international)
● National Electrical Code (NEC - NFPA 70) (USA)
● Canadian Electrical Code (CEC) (Canada)
● EN 60079-14 (formerly VDE 0165, T1) (EU, Germany)
● The working reliability regulation (Germany)
See also
Certificates (http://www.siemens.com/processinstrumentation/certificates)

General safety notes
2.4 Measures
SITRANS DA400 for oscillating positive displacement pumps
12 Operating Instructions, 09/2008, A5E00841120-03
2.4 Measures
For the sake of safety, the following precautions must be observed:
WARNING
"Intrinsically safe" protection type
"Intrinsically-safe" devices lose their certification as soon as they are operated on circuits
which do not correspond with the test certification valid in their country. The device's
protection level "ia" is reduced to "ib" when intrinsically safe electrical circuits with
protection level "ib" are connected.
Protection type "limited energy" nL (zone 2)
Devices with "limited energy" may be connected and disconnected while in operation.
Protection type "non-sparking" nA (zone 2)
Devices with "non-sparking" protection may only be connected and disconnected when off
circuit.
CAUTION
Electrostatic Sensitive Devices (ESD)
This device contains electrostatic sensitive devices. Electrostatic sensitive devices may be
destroyed by voltages that are undetectable to a human. Voltages of this kind occur as
soon as a component or an assembly is touched by a person who is not grounded against
static electricity. The damage to a module as a result of overvoltage cannot usually be
detected immediately. It may only become apparent after a long period of operation.
2.5 Qualified Personnel
Qualified personnel are people who are familiar with the installation, mounting,
commissioning, and operation of the product. These people have the following qualifications:
● They are authorized, trained or instructed in operating and maintaining devices and
systems according to the safety regulations for electrical circuits, high pressures and
aggressive as well as hazardous media.
● For explosion-proof devices: They are authorized, trained, or instructed in carrying out
work on electrical circuits for hazardous systems.
● They are trained or instructed in maintenance and use of appropriate safety equipment
according to the safety regulations.

SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 13
Description 3
3.1 Applications
The SITRANS DA400 acoustic diagnostics unit acoustically measures the acoustic emission
of oscillating positive displacement pumps.
The SITRANS DA400 allows continuous, simultaneous and independent monitoring of up to
four valves in a pump for leaks. In addition, another four inputs are available for monitoring
standard signals (e.g. diaphragm and temperature monitoring). This means that the condition
of an oscillating positive displacement pump is monitored in every phase of its operation.
The SITRANS DA400 is used in all industries where oscillating positive displacement pumps
are used.
3.2 Operation
You can operate and configure the SITRANS DA400 using the keys. In parallel, you can also
operate the SITRANS DA400 via a PROFIBUS connection.

Description
3.3 Layout
SITRANS DA400 for oscillating positive displacement pumps
14 Operating Instructions, 09/2008, A5E00841120-03
3.3 Layout
3.3.1 Device structure









➀ Screwable cover ⑥ Terminal connection diagram
② Type plate ⑦ Terminal strip
③ Digital display ⑧ Cable gland
④ Keypad ⑨ Mounting plate
⑤ Sensor
Figure 3-1 Front view (closed and open)

Description
3.3 Layout
SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 15
3.3.2 Structure of the nameplate
Device








① Manufacturer ⑤ Place of manufacture
② Product name ⑥ Product information
③ Order no. ⑦ Information address
④ Technical data ⑧ Serial number
Figure 3-2 Device type plate
Sensor






① Manufacturer ④ Product version
② Order no. ⑤ Serial number
③ Product name ⑥ Place of manufacture
Figure 3-3 Sensor type plate

Description
3.4 Mode of operation
SITRANS DA400 for oscillating positive displacement pumps
16 Operating Instructions, 09/2008, A5E00841120-03
3.4 Mode of operation
3.4.1 Measuring principle
Mode of operation
Leaks in the valves of oscillating positive displacement pumps are flows in which cavitation
occurs. This generates sound waves. The sound waves are transferred to the valve housing.
The acoustic emission sensor of the acoustic diagnostics unit detects these sound waves on
the exterior of the valve housing.
The sound pressure level L generated by the leak depends on the hydraulic power Phyd as
follows:
L ORJ P
hyd
η

P

L Sound pressure level
η Energy conversion coefficient, from hydraulic to acoustic
Phyd Hydraulic power
P0 Reference power
The hydraulic power at a valve depends on the pressure differential Δp and the flow rate Q
as follows:
Phyd ˂p Q

Phyd Hydraulic power
Δp Pressure differential
Q Flow rate
The valves of an oscillating displacement pump open and close periodically. The sound
pressure level of an intact valve is low. The sound pressure level of a defective valve
depends on the valve position. A pump working normally changes the valve position
periodically between open and closed. The sound pressure level therefore fluctuates
periodically. The appearance of a sensor signal and sound pressure level on an intact valve
and a defective valve, is shown in the following two figures.

Description
3.4 Mode of operation
SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 17
Figure 3-4 Sensor signal (a) and sound pressure level (b) on an intact valve
L0 Sound pressure level produced by load-dependent operating noise of the pump
L1 Sound pressure level produced by the operating noise of the pump as well as a leak
LD Is the measured value of the acoustic diagnostics unit and corresponds to the additional noise
caused by the leak
Figure 3-5 Sensor signal (a) and sound pressure level (b) on a defective valve
The measurement always refers to the operating noise of the pump. The measurement is
carried out in the ultrasonic range. In the ultrasonic range, the operating noise of the pump
and the closing noise of the valves are attenuated. Crosstalk between neighboring valves is
also attenuated.
The following table lists the possible states of discharge pressure, flow rate, energy
conversion coefficient and sound pressure level depending on the state of the valve:

Description
3.4 Mode of operation
SITRANS DA400 for oscillating positive displacement pumps
18 Operating Instructions, 09/2008, A5E00841120-03
Valve state Valve position Δp Q ƞ L
intact open small large small small
intact closed large zero small small
defective open small large small small
defective closed large medium large* large
* through cavitation
Only a closed defective valve results in a high sound pressure level.

Description
3.4 Mode of operation
SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03 19
3.4.2 Principle of measurement with trigger sensor
It is possible to measure the crankshaft angle for piston pumps whose valves are coupled
acoustically.
For this purpose, the trigger sensor at the crankshaft will record the reference angle 0° as
the center of the trigger pulse. The measuring device determines the closing angle phi of the
defective valve. The closing angle is the angle between reference angle and acoustic
emission signal.
L0 Sound pressure level generates a load-dependent operating noise of the pump.
L1 Sound pressure level generated by the operating noise of the pump as well as leakage.
LD Is equal to the measured value of the acoustic diagnostic unit and corresponds to the
additional noise created by the leakage.
phi Closing angle of the defective valve
Figure 3-6 Trigger signal (a) and sound level (b) at a defective valve
Note
Angle measurement
Angle measurement is possible for one defective valve only.
See also
Evaluation trigger signal (Page 70)

Description
3.4 Mode of operation
SITRANS DA400 for oscillating positive displacement pumps
20 Operating Instructions, 09/2008, A5E00841120-03
3.4.3 Sensor operation
The acoustic emission sensor works on the piezoelectric principle. The acoustic emission is
injected into the sensor via the sensor base (mounting surface) and inside it is converted into
an electrical voltage by a piezoceramic element. This is amplified in the sensor and
transmitted via the cable.
The sensor frequency range lies in the ultrasonic range (>20 kHz). The sensor is non-
directional, i.e. the angle at which the sound wave is incident on the sensor base is not
important.