WELBA MRF-2-PA2 User manual

1. Introduction
106187 –MRF-2-PA2 -E - V1.3 - 24.01.2023 Page 1
Freely programmable
pasteur controller
MRF-2-PA2
Installation and operating instructions
for plant engineering companies,
installers and service engineers
Firmware V1.3
Messen - Steuern - Regeln
alles aus einer Hand
Programmable via
configuration software
WELBA „KONSOFT"

1. Introduction
Page 2106187 –MRF-2-PA -E -V1.3 –24.01.2023
1. Introduction................................................................................................................................................ 4
1.1 Information about this operating instructions ................................................................................ 4
1.2Limitation of liability ....................................................................................................................... 5
1.3 Warning notices in these operating instructions............................................................................ 6
1.4 Model / type plate .......................................................................................................................... 7
1.5 Items supplied ............................................................................................................................... 8
1.6 Disposal......................................................................................................................................... 8
1.7 Cleaning instructions ..................................................................................................................... 8
1.8 Dimensions.................................................................................................................................... 9
1.9 Technical data regulator .............................................................................................................. 10
1.10 Sensor dimensions und technical data sensor............................................................................ 11
2. Safety ...................................................................................................................................................... 12
2.1 General Information..................................................................................................................... 12
2.2 Intended use................................................................................................................................ 13
2.3 Wiring, screening, earthing.......................................................................................................... 14
2.4 Electrical safety ........................................................................................................................... 14
3. Installation ............................................................................................................................................... 15
3.1 Location and climatic conditions.................................................................................................. 15
3.2 Unpacking and storage ............................................................................................................... 15
3.3 Installation of housing.................................................................................................................. 15
3.4 Fitting the sensor ......................................................................................................................... 16
3.4.1 Changing the sensor cable length............................................................................................... 16
4. Electrical connection ............................................................................................................................... 17
4.1 Safety during installation ............................................................................................................. 17
4.2 Procedure .................................................................................................................................... 18
4.3 Wiring / circuit diagram ................................................................................................................ 19
4.3.1 Wiring the digital input ................................................................................................................. 19
5. Operation................................................................................................................................................. 20
5.1 Function overview........................................................................................................................ 20
5.2 The configuration software KONSOFT........................................................................................ 22
5.3 Operation in levels....................................................................................................................... 23
5.4 Operation of working level........................................................................................................... 24
5.4.1 Button functions........................................................................................................................... 24
5.4.1 Operation in general .................................................................................................................... 25
5.4.2 Select and start a predefined program ........................................................................................ 25
5.4.3 Selection "FILLING QUANTITY in %" before program start ....................................................... 26
5.4.4 Switch on agitator in stand-by ..................................................................................................... 26
5.4.5 Program sequence with (control) phases.................................................................................... 27
5.4.6 Manual operation......................................................................................................................... 29

1. Introduction
106187 –MRF-2-PA2 -E - V1.3 - 24.01.2023 Page 3
6. Parameterization ......................................................................................................................................30
6.1 Change and save parameters......................................................................................................30
6.1.1 Enter level code: ..........................................................................................................................30
6.1.2 Display and change parameter value ..........................................................................................31
6.1.3 Save parameters and return to work level ...................................................................................31
6.2 Level "Temperatures and expiry times" (C parameters) .............................................................32
6.3 Level “Sequence program configuration (P parameters) ..........................................................33
6.4 Level “Control parameter” (r parameters) ................................................................................37
6.4.1 Explanation of the control parameter sets ...................................................................................37
6.4.2 Selection "FILLING QUANTITY in %" in the working level ..........................................................38
6.4.3 Control parameter sets WARM UP ..............................................................................................39
6.4.1 Control parameter sets COOLING DOWN ..................................................................................40
6.5 Level “Hardware configuration” (A parameters).......................................................................41
6.6 Level “I/O test parameter” (o. parameters) ..............................................................................42
7. Other Notes..............................................................................................................................................43
7.1 Fault messages ............................................................................................................................43
7.1.1 Sensor fault ..................................................................................................................................43
7.1.2 Behaviour in the event of a power failure.....................................................................................44
7.2 Functions digital input ..................................................................................................................45
7.3 Setting the actual value correction...............................................................................................45
7.4 Temperature control during holding times ...................................................................................46
7.5 ‚End‘ message on the display ......................................................................................................47
7.5.1 ‚End‘ message also via relay output ............................................................................................47
7.6 Interface RS485 ...........................................................................................................................47
7.7 Determination of the agitator activation per control phase ..........................................................48
7.8 General measures when using electronic control systems..........................................................49
Publisher:
Welba GmbH
Electronic Control Engineering
Gewerbepark Siebenmorgen 6
D-53547 Breitscheid
Fon:
Fax:
+49 (0)2638 / 9320-0
+49 (0)2638 / 9320-20
[e-mail]
www.welba.de

1. Introduction
Page 4106187 –MRF-2-PA -E -V1.3 –24.01.2023
1. Introduction
1.1 Information about this operating instructions
These operating instructions are intended for the use by plant engineers, installers
or service technicians of the MRF-2-PA2 pasteur regulator. This manual contains all
necessary suggestions, information, recommendations and advice for the safe and
proper installation and commissioning of the pasteur regulator. It is only with the
knowledge of this operating instruction that errors at the regulator can be avoided
and a trouble-free operation is guaranteed.
Read the assembly instructions carefully and adhere to the recommendations de-
scribed in order to ensure proper operation. In addition, the local accident preven-
tion regulations and general safety regulations are to be observed for the field of
application of the pasteur regulator.
When delivered, the parameterization of the MRF-2-PA2 does not
necessarily correspond to the intended use. This must be ad-
justed accord-ingly during the installation.
Basically, the installer of the system is responsible for the com-
missioning of the regulator.
Operation instruction for the operator
The plant engineers, the installer or the service technician must prepare operating
instructions for the operator of the pasteur regulator. In this case the parameteriza-
tion of the delivery state must be clearly documented.
We recommend to only document those parameters which the operator of the regu-
lator needs.
When preparing the operating instructions for the operator the local regulations have
to be observed - see chapter “Safety”.
These operating instructions include important technical and
safety information. It is vital to carefully study all these instruc-
tions before the installation of the regulator or in case of any
other work with the regulator!
The manufacturer accepts no liability for errors and reserves the right to make tech-
nical changes at any time. All rights reserved.
NOTICE for storing the operating instructions
This instruction manual is part of the product and must always be readily available
for the service technician.
WELBA „KONSOFT"
The free of charge configuration Software KONSOFT provides a simple parameter-
ization and updating of the milk temperature regulator as well as a comfortable eval-
uation of the determined data.
See also section 5.2
WARNING
NOTICE
NOTICE

1. Introduction
106187 –MRF-2-PA2 -E - V1.3 - 24.01.2023 Page 5
1.2 Limitation of liability
The proper function of the MRF-2-PA2 depends on many external
factors on which the manufacturer has no influence. The manu-
facturer assumes no liability for damage to the cooling tank, the
connected components or the product to be tempered.
All information and instructions in this manual have been compiled taking into ac-
count the applicable standards and regulations, the state of the art and our long-term
experiences.
These instructions have been compiled with maximum care and attention. However,
their content does not constitute an assurance of product features.
The manufacturer accepts no liability for errors and reserves the right to make tech-
nical changes at any time. All rights reserved.
WELBA GmbH does not assume any liability for damages due to:
- Non-observance of the installation instruction
- Improper use
- Installation by unqualified staff
- Non-approved outdoor installation
- Unauthorized modifications
- Technical modifications
Otherwise, our general terms and conditions as well as the terms of delivery of
WELBA GmbH and the legal regulations valid at the time of conclusion of the con-
tract are applicable.
We reserve the right to make technical changes in the context of improving the prop-
erties of use and further developments.
WARNING

1. Introduction
Page 6106187 –MRF-2-PA -E -V1.3 –24.01.2023
1.3 Warning notices in these operating instructions
Important safety information in these assembly instructions are identified by sym-
bols. These instructions on occupational safety must be adhered to and followed. In
these cases, behave particularly carefully in order to avoid accidents, personal injury
and property damage.
In addition to the information in these assembly instructions, the general and local
safety and accident prevention regulations must also be observed and instructed!
Nature and source of danger
This warning signs warns of an imminent danger to health and life of people. Failure
to comply with this warning will result in extremely serious injuries, including death.
Nature and source of danger
This warning signs warns of a possibly dangerous situation for the health of people.
Failure to observe these warning notices can result in serious injuries, including
death.
Nature and source of danger
This warning sign warns of a possibly dangerous situation for the health of people.
Failure to observe these warnings can lead to minor or moderate injuries.
Note
General notes contain application tips and particularly useful information, but no
warnings about dangers.
DANGER!
ATTENTION
NOTICE
WARNING

1. Introduction
106187 –MRF-2-PA2 -E - V1.3 - 24.01.2023 Page 7
1.4 Model / type plate
These instructions apply to all controllers in the series MRF-2-PA2.
The type designation and the exact connection diagram for your controller can be
found on the controller as a connection sticker.
Example:
Controller type designation:
and

1. Introduction
Page 8106187 –MRF-2-PA -E -V1.3 –24.01.2023
1.5 Items supplied
- Pasteur regulator MRF-2-PA2
- Accompanying documentation
- Holder
- Rubber seal
- Temperature sensor TF1A-2
- Fixing screws
- Optional accessories that may have been ordered
1.6 Disposal
For the purposes of disposal, the device is classified as waste electronic equipment
within the meaning of European Directive 2002/96/EC (WEEE) and must not be in-
cluded with household waste. It must be disposed of through the correct channels.
Local and current legislation must be observed.
1.7 Cleaning instructions
The enclosure front (front foil) can be cleaned with usual detergents.
ATTENTION: The enclosure front is not resistant to aggressive
acids and alkalis, abrasive cleaners and cleaning with high-pres-
sure cleaners!
The use of these cleaners and cleaning methods may lead to damages!
ATTENTION

1. Introduction
106187 –MRF-2-PA2 -E - V1.3 - 24.01.2023 Page 9
1.8 Dimensions
Front panel cutout
87 x 56 mm

1. Introduction
Page 10 106187 –MRF-2-PA -E -V1.3 –24.01.2023
1.9 Technical data regulator
Operating voltage
230V AC +/-10%, 50/60 Hz
Relay contact
1 changer contact, 2 make contacts,
potential-free
max. switching current
2 make contacts = 12A AC1 / 230V AC
1 changer contact = 10A AC1 / 230V AC
max. switching voltage
250V AC - 50..60 Hz
Display
13 mm LED-Display, 3 digits
Display range
-99 .. 999
Switching status displays
3 mm LEDs
Number of sensors
1
Usable sensors
KTY 81-110
KTY 81-210
PT 100
PT 1000
Measurement range
- KTY 81-110
- KTY 81-210
- PT 100
- PT 1000
(depending on the sensor used)
-50° .. +150°C
-50° .. +150°C
-99° .. +400°C
-99° .. +400°C
Sensor cable length
2 metres
Temperature resolution
0,1°C
Control mode
two-step / PID controller, depending on setting
Digital input
2 via optocoupler
Interface
RS-485
Housing
- Front dimension
- Front panel cutout
- Insertion depth
86 x 106 mm
56 x 87 mm
47 mm
Installation conditions
Built-in device - installation depth 45 mm
Protection
- Housing front
- Rear
The control is open on the rear, as it is designed
for installation in a closed housing.
IP 64
IP 00
Electrical safety
Protection class II,
Overvoltage category III, pollution degree I
Pollution degree
Electrically conductive pollution must not enter
the housing interior
Rated impulse voltage
1500V
Connection
Plug-in screw connections
for cables up to 2.5 mm²
Environment specifications:
- Operation temperature
- Storage temperature
- max. humidity
0° .. +50°C
-20° .. +70°C
75% (no dew)
Technical data subject to change.