WELBA MRF-M2 User manual

1. Introduction
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 1
Milk temperature regulator
MRF-M2
Installation and operating instructions
for plant engineering companies,
installers and service engineers
Firmware V0.7
Measuring - Controlling - Regulating
All from the same source
Programmable via
configuration software
WELBA „KONSOFT"

1. Introduction
Page 2106082 –MRF-M2 -E -V0.7 - 23.04.2021
1. Introduction................................................................................................................................................ 4
1.1 Information about this operating instructions ................................................................................ 4
1.2 Limitation of liability ....................................................................................................................... 5
1.3 Warning notices in these operating instructions............................................................................ 5
1.4 Model / type plate.......................................................................................................................... 6
1.5 Items supplied ............................................................................................................................... 6
1.6 Disposal......................................................................................................................................... 7
1.7 Cleaning instructions..................................................................................................................... 7
1.8 Dimensions.................................................................................................................................... 7
1.9 Technical data regulator................................................................................................................ 8
1.10 Sensor dimensions und technical data sensor.............................................................................. 9
2. Safety ...................................................................................................................................................... 10
2.1 General Information..................................................................................................................... 10
2.2 Intended use................................................................................................................................ 11
2.3 Wiring, screening, earthing.......................................................................................................... 12
2.4 Electrical safety ........................................................................................................................... 12
3. Installation ............................................................................................................................................... 13
3.1 Location and climatic conditions.................................................................................................. 13
3.2 Unpacking and storage ............................................................................................................... 13
3.3 Installation of housing.................................................................................................................. 13
3.4 Fitting the sensor......................................................................................................................... 14
3.4.1 Changing the sensor cable length............................................................................................... 14
4. Electrical connection ............................................................................................................................... 15
4.1 Safety during installation ............................................................................................................. 15
4.2 Procedure.................................................................................................................................... 15
4.3 Wiring / circuit diagram................................................................................................................ 16
4.3.1 Wiring the digital input................................................................................................................. 16
5. Operating................................................................................................................................................. 17
5.1 Function overview........................................................................................................................ 17
5.1.1 OFF mode (Stand-by).................................................................................................................. 17
5.1.2 Cooling mode .............................................................................................................................. 17
5.1.3 Continuous stirring mode ............................................................................................................ 17
5.2 The configuration software KONSOFT........................................................................................ 18
5.3 Operation in levels....................................................................................................................... 19
5.4 Operation of working level........................................................................................................... 20
5.4.1 Button functions........................................................................................................................... 20
5.4.2 Meaning of the LED‘s .................................................................................................................. 21
°C
T1
T2
T1 T2
OFF
SET

1. Introduction
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 3
5.5 Explanation of the operating modes ............................................................................................22
5.5.1 OFF mode (Stand-by).................................................................................................................22
5.5.2 Cooling mode...............................................................................................................................22
5.5.3 Continuous stirring mode ............................................................................................................23
6. Setting of parameters...............................................................................................................................24
6.1 Change and save parameter values............................................................................................24
6.1.1 Enter the level code .....................................................................................................................24
6.1.2 Display and change parameter value ..........................................................................................25
6.1.3 Save parameters and return to working level ..............................................................................25
6.2 Level “Cooling parameters 1” (C-Parameter)........................................................................26
6.3 Level “Cooling parameters 2” (P parameters).......................................................................28
6.4 Level “Hardware configuration” (A parameters).......................................................................31
6.5 Level “I / O test parameters” (o. parameters).......................................................................32
7. Other information .....................................................................................................................................33
7.1 Fault messages............................................................................................................................33
7.2 Function “intermediate agitating” in cooling mode [P22].............................................................34
7.3 Emergency cooling in the event of a sensor fault........................................................................34
7.4 Compressor fault monitoring [P72]...............................................................................................35
7.5 Milk cooling tank lid open in cooling mode...................................................................................36
7.6 Sensor correction procedure........................................................................................................36
7.7 Topic “Protection against icing“....................................................................................................37
7.7.1 Different variants for cooling start delay.......................................................................................37
7.7.2 Anti-icing protection by switching off the compressor with a robot ..............................................38
7.7.3 Anti-Icing protection by means of low pressure monitoring .........................................................38
7.8 Procedure following power failure................................................................................................39
7.9 RS485 interface ...........................................................................................................................39
7.10 General measures when using electronic control systems..........................................................40
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 4106082 –MRF-M2 -E -V0.7 - 23.04.2021
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-M2 milk temperature regulator. This manual con-
tains all necessary suggestions, information, recommendations and advice for the
safe and proper installation and commissioning of the milk temperature 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 milk temperature regulator.
When delivered, the parameterization of the MRF-M2 does not neces-
sarily correspond to the intended use. This must be adjusted accord-
ingly during the installation.
Basically, the installer of the system is responsible for the commis-
sioning 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 milk temperature regulator (farmer). In this case
the parameterization 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 instructions 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
Diese Bedienungsanleitung ist Produktbestandteil und muss in der Nähe des Milch-
temperatur-Reglers für den Servicemonteur jederzeit zugänglich aufbewahrt wer-
den.
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
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 5
1.2 Limitation of liability
The proper function of the MRF-M2 depends on many external factors
on which the manufacturer has no influence. The manufacturer accepts
no liability for any damages on the milk cooling tank, the connected
components or the milk.
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.
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.
WARNING
DANGER!
ATTENTION
NOTICE
WARNING

1. Introduction
Page 6106082 –MRF-M2 -E -V0.7 - 23.04.2021
1.4 Model / type plate
These instructions apply to all controllers in the series MRF-M2.
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
1.5 Items supplied
- Milk temperature regulator MRF-M2
- Accompanying documentation
- Holder
- Rubber seal
- Temperature sensor TF1A-2
- Fixing screws
- Optional accessories that may have been ordered

1. Introduction
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 7
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-pressure
cleaners!
The use of these cleaners and cleaning methods may lead to damages!
1.8 Dimensions
Front panel cutout
87 x 56 mm
NOTICE

1. Introduction
Page 8106082 –MRF-M2 -E -V0.7 - 23.04.2021
1.9 Technical data regulator
Operating voltage
230V AC +/-10%, 50/60 Hz
Relay contact
2 power relay
max. switching current
K1 = 12A AC1 - 230V AC
K2 = 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 LED
Number of sensor inputs
1
Type of sensor
KTY 81-210
Sensor cable length
2 metres
Measurement range
-20° .. +120°C
Temperature resolution
0.1°C
Control mode
two-step controller
Hysteresis
0,1 K .. 10 K (standard adjusting 0,7 K)
Target temperature T1*
Target temperature T2*
standard adjusting 4°C
standard adjusting 4°C
Agitator
- Rest time (interval) *
- Agitating time*
standard adjusting 20 min.
standard adjusting 2 min.
Digital input
1
Interface
RS-485
Connection
Plug-in screw connections
for cables up to 2.5 mm²
Housing
- Front dimension
- Front panel cutout
- Insertion depth
86 x 106 mm
56 x 87 mm
38 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
Environment specifications:
- Operation temperature
- Storage temperature
- max. humidity
0° .. +50°C
-20° .. +70°C
75% (no dew)
Pollution degree
Electrically conductive pollution must not enter
the housing interior
* = freely adjustable
Technical data subject to change.

1. Introduction
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 9
1.10 Sensor dimensions und technical data sensor
In contrast to our standard sensors, we also offer sensors with other
sleeve shapes and diameters or other cable lengths.
Sensor element
KTY 81-210
Bush material
1.4301 (V2A)
Bush length
40 mm
Bush diameter
6,0 mm +/- 0.1
Cable material
PVC
Measurement range
-10 .. 70° C
Cable length
standard 2 metres
40 mm
6,0 mm 6,1 mm

2. Safety
Page 10 106082 –MRF-M2 -E -V0.7 - 23.04.2021
2. Safety
2.1 General Information
The plant engineering company, the installer or the service engineer
must prepare operating instructions for the operator, taking account of
the controller's parameters as supplied.
We recommend referring only to the parameters which the end user
needs for safe operation.
In preparing the operating instructions for the end user, especially the
chapter on “Safety”, account must be taken of local regulations.
IMPORTANT NOTE
The parameter settings of the MRF-M2 as supplied do not correspond
to the intended use. This can lead to undefined behaviour by individual
components when the system is commissioned.
The general principle is that the plant constructor is responsible for
putting the regulator into operation.
These operating instructions contain important technical and safety
information. Please read carefully before installation and before any
work on or with the regulator.
It is the duty of the party commissioning the system to ensure
compliance with the following guidelines.
The regulator may only be installed by an authorised electro specialist,
observing all local safety requirements.
Access to the environment when connected must be restricted to
specialised personnel.
The regulator contain live components. They must be built into the
plant in such a way that contact with such live components is
impossible.
The regulator is not suitable for use in explosive atmospheres. Danger
of explosion. Use only outside areas subject to explosive atmospheres.
The regulator must not be used if the housing or connection terminals
are damaged.
No fluids must penetrate the housing.
The regulator may not be exported to the USA without the
manufacturer's express permission!
WARNING
WARNING

2. Safety
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 11
2.2 Intended use
These operating instructions contain important technical and safety
information. Please read carefully before installation and before any
work on or with the regulator!
Themilk temperature regulator MRF-M2 is used to control agitator motors, compres-
sors and other components in milk cooling tanks. Any other use of the device is
permitted only with prior written permission from the manufacturer.
The regulator is intended only for incorporating into machinery, display panels or
switchboxes etc. and when fitted corresponding to protection class 2 (double or re-
inforced insulation). It is only allowed to be put into operation in installed state. The
use of the regulator is permitted in devices of protection class 1 and 2. The regulator
must not be modified or converted in any way!
The milk temperature regulator is ready for use only when the parameters have been
set appropriately. Its use before this has been done would have no benefits and
could also damage the equipment or adversely affect the milk to be temperature-
controlled.
Responsibility for the faultless functioning of the connected devices lies with the plant
engineer or the installer or the service engineer who has installed and commissioned
the MFR-M2.
The regulator is fitted with a resistance temperature sensor.
The milk temperature regulator MRF-M2 is not suitable for use in explosive atmos-
pheres. Danger of explosion. Use only outside areas subject to explosive atmos-
pheres.
The regulator fulfils the EC requirements for electromagnetic compatibility (EMC)
and the Low Voltage Directive (LVD).
The safety components meet the VDE regulations
NOTICE

2. Safety
Page 12 106082 –MRF-M2 -E -V0.7 - 23.04.2021
2.3 Wiring, screening, earthing
When selecting wiring materials and installing and connecting the temperature con-
troller to the electricity supply, account must be taken of DIN VDE 0100 “Erection of
power installations with rated voltages below 1000” or the relevant national regula-
tions (e.g. based on IEC 60364).
- Wherever possible, keep input, output and supply leads and sensor cable phys-
ically separate from each other and do not lay them parallel to each other.
- Mains voltage cables and low-voltage cables must not be laid in one cable.
- Use screened and twisted interface and sensor cables.
- Earth the screening of temperature sensors unilaterally in the switchbox.
- Ensure correctly wired potential equalisation.
2.4 Electrical safety
- The regulator itself and the associated control circuits and load circuits must be
protected separately and in accordance with the local regulations.
- The separate protection of the control- and load circuit must be carried out ac-
cording to local conditions!
- In order to prevent destruction of the relay or semiconductor relay outputs in
the event of a short-circuit, the load circuit should be fused to the maximum
permissible output current.
- As well as incorrect installation, wrong parameter settings can also adversely
affect the correct functioning of the controller. For this reason, safety devices
that are independent of the controller should always be used, e.g. high and low
pressure valves or temperature limiters. Account should be taken of the local
safety regulations in this connection.
- The load circuit (relay outputs K1 to K12) must be fused in accordance with the
connected components.
- The connection of external voltages to the digital inputs can lead to the destruc-
tion of the control.
- Caution: All cables to the digital inputs must be shielded and kept as short as
possible. EMC.

3. Installation
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 13
3. Installation
3.1 Location and climatic conditions
It is essential not to install the device under the following conditions:
- severe jolting, vibration or magnetic fields
- permanent contact with water
- relative humidity of more than 90%
- sharply fluctuating temperatures (condensation)
- permanent and direct UV radiation
- dust, flammable gases, vapours, solvents,
- operation in an aggressive atmosphere (ammonia or sulphur fumes) - risk of
oxidation
- operation in the immediate vicinity of radio transmitters with high levels of spu-
rious radiation.
A physical separation between the device and inductive consumers is recom-
mended.
3.2 Unpacking and storage
If the packaging is damaged or something is missing, do not fit the temperature con-
troller. In this case please contact Welba.
If you keep the temperature controller for a period before using it, store it in a clean
dry place at a temperature of between -20°C and +70°C.
3.3 Installation of housing
For fixing the housing please follow the instructions:
Place the seal carefully in the groove. Ensure it is not twisted.
Insert the housing from the front through the switchboard cut-out.
Attach the holding frame in the rear position as shown by the picture.
Fasten the housing by using the screws provided.
°C
T1
T2
T1T2
ON
OFF
SET
Front panel cut-out
87 x 56 mm

3. Installation
Page 14 106082 –MRF-M2 -E -V0.7 - 23.04.2021
3.4 Fitting the sensor
The sensor cable must not be chafed or kinked.
There must be no substantial mechanical pressure on the sensor tube.
Do not place the sensor and the high-voltage cable in the same cable
conduit (not even within the switchbox).
Temperature range sensor cable -10°C .. +70°C.
When setting the temperature regulator parameters (and whenever the sensor is
replaced) the “actual value correction” [Parameter C91] must be adjusted so that the
temperature measured corresponds to that shown on the display. A reference ther-
mometer should be used for this purpose.
See section 7.6
Pay attention to the permitted temperature range for sensor cable
exposure.
3.4.1 Changing the sensor cable length
lf it is necessaryto shorten or lengthen the sensor cable on installation (or if a sensor
other than the one supplied is to be fitted), the "actual value correction" parameter
must be adjusted accordingly. See section 7.6
40 mm
6,0 mm 6,1 mm
WARNING
WARNING

4. Electrical connection
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 15
4. Electrical connection
4.1 Safety during installation
Before connecting ensure that the mains voltage is the same as
indicated on the device's type plate.
Incorrect electrical connection can cause damage to the regulator and
to the equipment.
The regulator should be disconnected from the mains voltage while
connecting plant components or the sensor.
No appliances with current levels in excess of the maximum values
indicated in the technical data should be connected to the relay
contacts.
No other consumers may be connected to the controller's mains
terminals.
4.2 Procedure
In order to avoid injury to persons or damage to connected
components, connections must in all cases be undertaken in the
following order!
Pull out all the regulator’s plug-in terminals.
Put the controller in position in the housing or switchboard. See section 3.3
De-energize the system.
Connect all components and sensors in accordance with section 4.3 (Circuit dia-
gram) to the plug-in terminals.
Do not yet plug the terminals into the controller!
Connect the mains cable to plug-in terminal A1 / A2.
Plug terminal A1/ A2 into the regulator.
Close the switchbox and turn on the mains voltage.
Switch on the regulator and set the parameters
(possibly using the optional WELBA-KONSOFT configuration software).
Plug the pre-cabled plug-in terminals of the components into the regulator.
Close the switchbox.
WARNING
WARNING

4. Electrical connection
Page 16 106082 –MRF-M2 -E -V0.7 - 23.04.2021
4.3 Wiring / circuit diagram
Correct wiring in accordance with the information in the accompanying description
and local regulations is essential.
Please note the following:
- Use cable bushes.
- Make sure that cables cannot chafe!
- Take particular care to ensure that the AC supply is not connected to the sensor
input or other low-voltage inputs or outputs.
- The two relay contacts may only be connected with the same voltage.
- When connecting the regulator and selecting the wiring materials to be used, it
is essential to comply with the provisions of DIN VDE 0100 “Erection of power
installations with rated voltages below 1000” or the relevant national regula-
tions.
Connect the compressor and agitator etc. according to the circuit diagram.
The compressor must not be connected directly to the relays on the control unit.
This must be switched using an additional contactor. In individual cases, it must
be checked whether additional motor protection switches or other safety devices
are to be installed.
Contactors are to be fitted with an RC protective circuit. See section 7.10
4.3.1 Wiring the digital input
Terminals 8 and 9 may only be connected to a potential-free normally open contact.
ATTENTION: do not apply any external voltage!
The correct circuit dia-
gram for your regulator
is affixed to the housing.
Sensor
KTY 81-210
Operating
voltage
230V AC
50/60Hz
Relays may only be connected
to a uniform voltage!
Contact load relay:
K1: 230V 12A AC1
K2: 230V 10A AC1
Digital input
potential-free
contact
RS485
A = RX/TX+
B = RX/TX-
Agitator
Compressor
L1
WARNING

5. Operating
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 17
5. Operating
5.1 Function overview
The MRF-M2 is a milk temperature regulator.
It distinguishes between three different
operating modes:
5.1.1 OFF mode (Stand-by)
Der Regler befindet sich im Stand-by-Betrieb.
- ‘OFF’ is shown in the display,
- all LEDs are out.
- both output relays are deactivated.
CAUTION: The control unit is live even when switched off!
5.1.2 Cooling mode
The cooling mode can only be started from the OFF mode. When the cooling mode
is activated, the currently measured milk temperature is permanently shown on the
display.
It is possible to switch between two freely adjustable target temperatures by pressing
a button. If the milk temperature exceeds the selected target temperature (T1 or T2)
by the hysteresis value, the compressor relay and agitator are automatically acti-
vated. Once the target temperature is reached, the compressor switches off, while
the agitator continues to operate for the pre-set 'after-stirring' time.
During non-cooling periods the agitator switches on at pre-set intervals in order to
ensure an even temperature throughout the milk.
Independently of this a short or long 'intermediate stirring' period can be selected
during cooling by pressing a button.
Start cooling mode by pressing button on foil keyboard:
The cooling mode is started by pressing the 'Cooling' button.
If a start delay is activated for the first milking [P61], the cooling start is delayed.
Pressing the 'Cooling' button again starts cooling immediately.
Start cooling mode via digital input:
The cooling mode starts immediately - depending on the setting in parameter [P61]
- or with a delayed start cooling.
5.1.3 Continuous stirring mode
From OFF mode, the agitator can be switched on by pressing the AGITATOR button
and then switched off again by pressing the OFF button. Parameter [C25] can be
used to set the time after which the agitator is to switch off automatically. The count-
down can be interrupted at any time using the OFF button.
If [C25] is set to '0', the agitator will run continuously, but can be switched off at any
time using the OFF button.
°C
T1
T2
T1 T2
OFF
SET
SET
DANGER!

5. Operating
Page 18 106082 –MRF-M2 -E -V0.7 - 23.04.2021
5.2 The configuration software KONSOFT
The user-friendly configuration software “KONSOFT" can be used for
- Configuration and parameter setting
- visualize the temperature profile for the last 48 hours
- updating (firmware)
Configuration
All setting parameters can be entered and stored, with reference to levels, on your
PC using a clearly designed template. A description is available for every parameter.
Once all parameters are entered, the complete configuration can be transferred to
the control unit via USB interface
Visualisation
Also by USB transfer, temperature profile over the last 48 hours can be obtained
from the regulator, displayed on screen graphically or in tabular form, and stored.
This allows rapid analysis in the event of a fault.
Bootloader function
This allows the controller to be updated to the new operating software at the push of
a button.
NOTE: The KONSOFT PC-Software has been thoroughly tested and has proven itself hundreds of times in customer
use. Despite all care, we point out that the use of the free PC-Software is at your own risk. WELBA does not accept any
liability for damages or loss of data resulting from the installation or use of the Software.
For software
description see
separate instructions
NOTICE

5. Operating
106082 –MRF-M2 -E -V0.7 - 23.04.2021 Page 19
5.3 Operation in levels
The working level is used for operation and control in everyday operation.
The MRF-M2 is parameterized in 4 different parameter levels.
The subordinate parameter levels are only entered after entering a code in order to
avoid inadvertent adjustment of the parameters.
Cooling parameter 1- (C parameter)
Parameters such as setpoints, hysteresis etc. can be set here.
Cooling parameter 2- (P parameter)
Setting of plant-specific functions such as Emergency cooling, agitator function,
Cooling start delay eg.
Hardware configuration - (A parameter)
Determination / parameterization of the hardware configuration such as digital input
and RS485 settings eg.
I/O test parameter - (A parameter)
Is intended for commissioning the control system.
Working level
Cooling parameter 1
C parameter
Cooling parameter 2
P parameter
Hardware configuration
A parameter
Code 212
Code 345
I/O test parameter
o. parameter
Code 384
Code 0E5
NOTICE

5. Operating
Page 20 106082 –MRF-M2 -E -V0.7 - 23.04.2021
5.4 Operation of working level
The working level is used for operation in everyday operation:
- OFF mode = switch off the control (Stand-by)
- Cooling mode = start the automatic cooling mode
- Continuous stirring = start the continuous stirring
- Parameter level = changing of setting values
5.4.1 Button functions
„COOLING“button (SET)
in OFF mode =
Start the automatic cooling mode
in cooling mode =
- display of the setpoint that has been set
(change value in conjunction with arrow keys)
- acknowledging fault messages
Press twice =
in event of sensor fault =
- skipping the cooling start delay (if set)
- activation of emergency cooling (see section 7.3)
parameter setting =
- displays the value of the current parameter
(change value in conjunction with arrow keys)
„OFF“ button
Active modes are ended by pressing the OFF button.
- switch the controller to STAND-BY mode,
- continuous agitating mode prematurely
- change to programming mode (hold down button for 3 seconds)
„T1 / T2“ button
in cooling mode =
press 3 sec.: change target temperature T1 / T2
parameter setting =
- scroll down the parameter list
- decrease set value
„AGITATOR“ button
in OFF mode =
start continuous stirring mode
in cooling mode =
press for 1 sec.: " Intermediate stirring SHORT "
press for 3 sec.: " Intermediate stirring LONG ”
See also section 7.2
parameter setting =
- scroll up the parameter list
- increase set value
Working level
Code 212
Code 345
°C
T1
T2
T1 T2
OFF
SET
Code 0E5
Cooling parameter 1
C parameter
Cooling parameter 2
P parameter
Hardware configuration
A parameter
I/O test parameter
o. parameter
Code 384