WELBA MRF-2 Series Installation And Operating Instructions Manual Download Page 1

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1. Introduction

104781 - MRF-2 | MRH-2 - V2.4 - 22.07.2020

Page 1

Programmable PID multichannel
temperature controller

MRF-2 ...

MRH-2 ...

Installation and operating instructions
for plant engineering companies

Software version V2.4

Programmable via
configuration software
WELBA „KONSOFT"

Measuring - Controlling - Regulating

All from the same source

Summary of Contents for MRF-2 Series

Page 1: ...mable PID multichannel temperature controller MRF 2 MRH 2 Installation and operating instructions for plant engineering companies Software version V2 4 Programmable via configuration software WELBA KO...

Page 2: ...n Page 2 104781 MRF 2 MRH 2 V2 4 22 07 2020 Publisher Welba GmbH Electronic Control Engineering Gewerbepark Siebenmorgen 6 D 53547 Breitscheid Fon 49 0 2638 9320 0 Fax 49 0 2638 9320 20 info welba de...

Page 3: ...allation 17 4 2 Procedure 17 4 3 Wiring 18 4 4 Circuit diagram 18 5 Operation 19 5 1 General Hints and Tips 19 5 2 BG ETEMController overview 20 5 3 Controls Displays 21 5 3 1 Meaning of LED s 21 5 3...

Page 4: ...ation Basically the installer of the system is responsible for the commissio ning of the control Operation instruction for the operator The plant engineers the installer or the service technician must...

Page 5: ...ulations the state of the art and our long term experiences WELBA GmbH does not assume any liability for damages due to Non observance of the installation instruction Improper use Installation by unqu...

Page 6: ...gue input can be configured to 0 10 V or 4 20 mA External plant components such as heating systems condensing units control val ves mixing valves pumps fans signal transmitters etc can be controlled t...

Page 7: ...s a connection sticker Example Controller type designation and You can find a more detailed connection diagram for your controller on the accom panying device documentation Example L N 34 42 K1 K4 230...

Page 8: ...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 Cle...

Page 9: ...1 Introduction 104781 MRF 2 MRH 2 V2 4 22 07 2020 Page 9 1 8 Dimensions MRF 2 1 2 3 4 C MRH 2 R 5 1 2 3 4 C Panel cutout 87 5 x 66 5 mm Pin size welding studs M3 96 x 53 mm Panel cutout 87 x 56 mm...

Page 10: ...pto coupler Temperature alarms 2 independently Control mode two step three step control PID continuous or pulsed Hysteresis 0 1 K 99 9 K freely adjustable Housing MRF 2 Front panel mount Housing MRH 2...

Page 11: ...for the end user especially the chapter on Safety account must be taken of local regulations IMPORTANT The parameter settings of the MRF 2 MRH 2 as supplied do not cor respond to the intended use e g...

Page 12: ...requirements Access to the environment when connected must be restricted to spe cialised personnel PID multichannel temperature controllers contain live components They must be built into the plant i...

Page 13: ...be put into operation when installed The use of the controller is permitted in devices of protection class 1 and 2 The entire product must not be changed or converted The temperature controller is re...

Page 14: ...es Earth the screening of temperature sensors unilaterally in the switchbox Ensure correctly wired potential equalisation 2 4 Electrical safety All control and load circuits must be fused in accordanc...

Page 15: ...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...

Page 16: ...tion to various types of sensor see technical data It can function properly only if one of those sensor types is installed and the parameters are correctly set When setting the temperature controller...

Page 17: ...ocedure In order to avoid injury to persons or damage to connected components connections must in all cases be undertaken in the following order This is to prevent an unsuitable pre configuration dama...

Page 18: ...materialsto be used it is essential to comply with the provisions of DIN VDE 0100 Erection of power instal lations with rated voltages below 1000 or the relevant national regulations Furthermore all...

Page 19: ...We recommend you to note the values set on the controller before delivery to the end user In this way it is possible for you to deliver a pre programmed controller in the event of a spare part deliver...

Page 20: ...ayed switch on after mains power on Mutual delays between re lays Compressor protection Digital inputs Monitoring of external sys tem components Error message via LED and relay output Internal logic o...

Page 21: ...h arrow buttons Press SET button the set value is displayed and can be changed by u sing the arrow keys If no key is pressed for more than 1 minute the controller switches back to the working level Mo...

Page 22: ...s always 2 step regulation INPUTS Setpoint C1 Sensor input 1 Sensor input 2 Sensor input 3 analog input INPUTS Setpoint C1 Sensor input 1 Sensor input 2 Sensor input 3 analog input OUTPUTS Relay K1 Re...

Page 23: ...igh or low temperature alarm each with relative or absolute which input controller block 1 to 4 link act directly on relays act on controller block message on fault indicator Adjustment see parameter...

Page 24: ...dicator Adjustment see parameter list The setting for which OUTPUTS are to be controlled is defined firstly in pa rameters H25 H26 and secondly on the relevant relay parameters P21 P25 Function digita...

Page 25: ...ant control component via parameters P11 to P14 and the type of control determined Step 3 Assignment of output relays analogue output The relay outputs analogue output are connected with the relevant...

Page 26: ...1 P25 H3 H4 H5 H6 H5 H6 H21 H25 P21 P25 5 6 Parameter Quick Guide Function block temp alarm 1 Collective fault indicator Function block digital input 1 Controller block 1 analogue analogue Function bl...

Page 27: ...on Configuration level P parameters The configuration level is used for programming the basic functions of the controller As subsequent interference by the end user after configuration can result in d...

Page 28: ...the required value NB if you hold down the UP or DOWN button longer the value changes more quickly Release the SET button In order to store the value in the memory first release the arrow button and t...

Page 29: ...P11 C10 C11 C12 C13 PID Xp P part proportional range PID Tn I part reset time PID Tv D part hold back time PID Tz cycle time C10 C13 are visible only if control component 1 P11 is set to PID control C...

Page 30: ...tion sensor 1 offset value Only display value Is entered automatically 30 K 30 K C92 Actual value sensor 2 Sensor correction C93 is entered automatically 99 C 400 C C93 Sensor correction sensor 2 offs...

Page 31: ...on sensor 3 optional 16 Absolute value control based on analog input 17 controller block 1 Difference temperature control sensor 1 and sensor 2 17 controller block 2 Difference temperature control sen...

Page 32: ...ter P12 3 connected to controller block 3 parameter P13 4 connected to controller block 4 parameter P14 5 connected to controller block 1 parameter P11 inverted function 6 connected to controller bloc...

Page 33: ...sensor fault Behaviour relay K3 at sensor fault Behaviour relay K4 at sensor fault Behaviour relay K5 at sensor fault 0 2 0 2 0 2 0 2 0 2 0 0 0 0 0 0 off in the event of a fault 1 on in the event of a...

Page 34: ...elay 1 5 P76 Time setting for switch on delay 0 999 sec 0 P77 Switch off delay relay X 0 5 0 Used to determine whether a relay and if so which should be switched off with a delay For delay time see P7...

Page 35: ...ion temperature alarm 1 Special function temperature alarm 2 0 63 0 63 0 0 A temperature alarm directly switches off the relays stipulated according to the following table The setting 32 means that on...

Page 36: ...0 21 22 23 24 25 26 27 28 29 30 31 STM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 K5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 K4 0 0 0 0 0 0 0 0 1 1 1 1 1 1...

Page 37: ...0 0 low aktiv 1 high aktiv H41 H42 H43 H44 H45 Delay time after mains ON for digital input 1 Delay time after mains ON for digital input 2 Delay time after mains ON for digital input 3 Delay time aft...

Page 38: ...Description Range Default H97 H98 Display when DOWN button pressed Display when UP button pressed 0 4 0 4 0 2 in working level 0 disabled 1 sensor 1 2 sensor 2 3 sensor 3 4 analogue input H99 Display...

Page 39: ...0 0 0 0 0 1 1 1 1 1 1 1 1 in 3 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 in 2 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 in 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 d6 Function SET button in working level 0 8 0 Release of the s...

Page 40: ...mA NB Jumper must be in position A d15 d16 Start variable analogue output optional Stop time for start variable optional 0 100 0 300 sec 0 0 after mains on d17 Limitation analog output 0 100 0 When ac...

Page 41: ...must be set to 5 10 17 22 29 34 The setpoint is C7 When the controller is switched on dif appears in the display If the UP button is pressed the temperature of the second sensor is displayed In the w...

Page 42: ...tion the length of the sensor cable is changed or faulty sensor is replaced giving rise to an incorrect reading In order to adjust the actual value correction a reference thermometer is needed Proceed...

Page 43: ...alue correction must then be adjusted at programming level F1H F2H F3H F4H Broken sensor The sensor or sensor cable is faulty and must be replaced or repaired Parameter C91 Actual value correction mus...

Page 44: ...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 values sh...

Page 45: ...tage 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 induction diode AC voltage In the cas...

Page 46: ...ed 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 made represent only a few of the p...

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