WELBA 105750 Installation And Operating Instructions Manual Download Page 1

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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"

Summary of Contents for 105750

Page 1: ...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 s...

Page 2: ...g 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 th...

Page 3: ...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 o...

Page 4: ...g 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 regul...

Page 5: ...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 Impo...

Page 6: ...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 reg...

Page 7: ...te 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 ATTE...

Page 8: ...erature 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...

Page 9: ...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...

Page 10: ...eration 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 par...

Page 11: ...mitted 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 appropri...

Page 12: ...ts 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 condition...

Page 13: ...us 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 c...

Page 14: ...ver 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...

Page 15: ...als 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 terminal...

Page 16: ...onal 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 a...

Page 17: ...t 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 intermed...

Page 18: ...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 Th...

Page 19: ...h 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 configurat...

Page 20: ...ting 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 continu...

Page 21: ...Compressor contactor is switched off LED permanently on Compressor contactor is switched on LED flashes Compressor is blocked by The cooling start delay is active Compressor pendulum protection see P...

Page 22: ...lay The COMPRESSOR LED shows the current switching status of the compressor the AGITATOR LED lights up the T1 or T2 LED for target temperature 1 or 2 lights up The pre set target temperature T1 or T2...

Page 23: ...A long intermediate agitating is triggered Duration c24 if parameter P22 2 If toggling is parametrized Press the AGITATOR button in cooling mode switch on the agitator Press the AGITATOR button again...

Page 24: ...shows 0000 the first 0 flashes Use the arrow keys to set the first digit of the desired code Confirm the correct digit with SET The set digit has been accepted the second 0 flashes Set the second digi...

Page 25: ...d down the SET button and use the arrow buttons to set the desired value NOTE In order to store the value in the memory first release the arrow button and then the SET button 6 1 3 Save parameters and...

Page 26: ...fter compressor is switched off 0 999 sec 120 C21 Pause duration Period in minutes between agitator switching off and switching on again for the duration of the after stir ring period selected 0 999 m...

Page 27: ...Sensor correction adjustment see also section 7 6 Range Default c90 Display actual temperature sensor c91 Sensor correction sensor A correction can be applied to the value meas ured by the sensor Then...

Page 28: ...mit for target temperature T1 Lower limit for target temperature T2 Upper limit for target temperature T2 0 50 0 C 0 50 0 C 0 50 0 C 0 50 0 C 2 0 8 0 2 0 8 0 P15 P16 P17 P18 Lower limit for hysteresis...

Page 29: ...Pendulum protection Prevents the compressor from running against pressure The LED compressor is flashing dur ing the pause time 0 999 sec 60 P72 Thermo protection and fault monitoring compressor See a...

Page 30: ...ng start delay 4 Switchover T1 T2 externally via digital input NOTE When the contact is closed T2 is active NOTE Parameter A21 must be set to 2 In the case of 2 and 3 If T1 is active the LED for T1 is...

Page 31: ...mote start cooling The cooling can be started from the OFF mode via the digital input No further parameters need to be set to use this function 2 external temperature switching T1 T2 P80 4 The digital...

Page 32: ...r 0 Relay switched off 1 Relay energized 0 1 0 Test digital input Select parameter o 21 with the arrow keys and test as follows Press the SET key briefly 0 or 1 appears in the display depend ing on th...

Page 33: ...aximum compressor run time F30 Power failure in cooling When switching on again it was found that the regulator was in cooling mode before the power interruption F53 Compressor failure F56 Sensor shor...

Page 34: ...is triggered Duration c23 If the AGITATOR key is held down for a longer period of time The display changes from Sho to Lon A long intermediate agitating is trig gered Duration c24 Parameter P22 is se...

Page 35: ...ted Parameter P72 is set to 1 The auxiliary contact of the motor protection relay or of the motor protection switch is queried Is this auxiliary contact opened fault F53 is displayed Parameter P72 is...

Page 36: ...ely effective over the whole measurement range An adjustment to the sensor correction is then necessary only in conjunction with first installation if the sensor cable length is altered when replacing...

Page 37: ...freezing of milk in the tank The regulator offers different variants of cooling start delays 0 no cooling start delay Cooling starts immediately 1 simple cooling start delay Cooling starts after a set...

Page 38: ...w pressure switch must be connected to the digital input of the controller and parameterised Note For the anti icing function the correct switch off pressure must be set on the low pressure switch Set...

Page 39: ...ulator is switched on it checks whether the parameter values in the EEprom storage have been changed inappropriately This is possible in rare cases due to EMC effect or lightning for example If an imp...

Page 40: ...0 kV 0 5 kV 3 typical industrial environment 2 0 kV 1 0 kV 4 industrial environment with very high interference level 4 0 kV 2 0 kV As the values given in the table are maximum values operational valu...

Page 41: ...age systems the induction voltage occurring can for example be limited by using self induction diodes varistors or suppresser diodes The diagram on the left shows one possibility using a self inductio...

Page 42: ...These components must be protected against excessive voltages for which mainly varistors RC combinations or choke coils are used The use of zero voltage switches is also recommended The suggestions m...

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