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MC3-SC Stepped Controller 

Document no.: 140744

  

version 1.3

 

 

Page 13 of 45 

2.7

 

Troubleshooting 

If a compressor is in an error status, this is shown on the main screen. 

 

The compressor overview shows you which compressor has the error, and the control data is 
shown on a red background. An exclamation mark will also be blinking at the top of the screen. 

When an alert (not an error) is being signalled by the controller, the touchscreen will show this 
by putting a yellow background behind the control data. 

 

 

Содержание MC3-SC

Страница 1: ...iption MC3 SC Stepped Controller Pages 45 Doc no 140744 Type Manual By BVDB Version 1 3 File Do140744 MC3 SC Step Control V13 EN docx Initials Date 10 05 2016 VDH Products BV MC3 SC Manual Step contro...

Страница 2: ...gulating the compressors 10 2 5 5 Control data for regulating the condensers 10 2 5 6 Active compressor steps 11 2 5 7 Compressor status overview 11 2 5 8 More less power 11 2 5 9 Condenser status ove...

Страница 3: ...How the P band works on the suction side compressor side 34 7 2 Overview of the functional flow for 4 compressors when stepping compressor levels up and down 34 7 3 Overview of the functional flow fo...

Страница 4: ...tage compressor or frequency controlled Condenser regulation On off switching or frequency controlled The controller can also decide which compressor or condenser should be switched on or off dependin...

Страница 5: ...to the controller is switched on it will start up and display the following screen This screen shows that the controller is in standby mode Various actions can be taken from here Reinitialize the com...

Страница 6: ...o be told where to find the controller This can be done by touching the text MC3 SC in the middle of the screen and holding for 10 seconds The following screen then appears Changing the blue numbers l...

Страница 7: ...After the controller has been switched on and the password has been given if required the screen will show a status overview of the controller The screen shown here gives an overview of the compressor...

Страница 8: ...ontroller into standby mode Confirmation will be required first of course The standby button is not visible if the controller is configured to use a password for any changes that are to be carried out...

Страница 9: ...his button for changing settings logging in or viewing alerts Settings button This symbol is used to show that the user is logged in Date and time Standby button More less power Compressor overview Co...

Страница 10: ...temperature sensor The measured values are always shown in the middle with the setpoints on the right These setpoints are shown in blue If the defined setpoint is overruled by an external setpoint th...

Страница 11: ...green field around it means that the compressor is being switched on or off of that a level is being enabled or disabled This can be seen from the green triangles in the blue bar more less power Yell...

Страница 12: ...ompressor symbols at the bottom will then go yellow At the bottom of this screen is a symbols with a clock Pressing this button gives a dialogue that can be used for resetting the runtime hours counte...

Страница 13: ...he main screen The compressor overview shows you which compressor has the error and the control data is shown on a red background An exclamation mark will also be blinking at the top of the screen Whe...

Страница 14: ...d will give an overview of the alerts that have currently not been acknowledged If there are active alerts they are shown in the screen and can be acknowledged using the button at the bottom right The...

Страница 15: ...ht can be used for logging out and the one at the bottom centre lets you change the password The button with the clock lets you change the clock for the controller and the touchscreen The time on the...

Страница 16: ...The desired parameter numbers can also be filled in directly by pressing the field with the number The value for the parameter is shown to the right of the parameter number The minimum and maximum per...

Страница 17: ...rmostat function Pressing this replaces the discharge part of the screen with a thermostat readout The thermostat can work fully autonomously or it can also be used for lowering the setpoint of the su...

Страница 18: ...18 Compressor strategy 0 no restrictions 1 leave the operational compressor running 2 only step up compressors 0 to 2 0 P 19 Minimum capacity gain per step 0 1 to 300 0 kW 1 0 P 20 Minimum time betwee...

Страница 19: ...2 present read out and alerts 0 to 2 0 P 41 Compression side temperature sensor sensor 2 0 absent 1 present read only 2 present read out and alerts 0 to 2 0 P 42 Minimum suction side temperature senso...

Страница 20: ...ischarge pressure sensor offset 10 0 to 10 0 bar 0 0 Coolant P 90 Coolant type 0 Unknown 1 R22 2 R134A 3 R290 4 R404A 5 R407A 6 R407C 7 R407F 8 R410A 9 R422D 10 R507 11 R717 12 R744 13 R1234ZE 14 self...

Страница 21: ...0 P 601 External cooling release delay 0 to 999 sec 60 P 610 Controller sensor offset 10 0 to 10 0 K 0 0 P 611 Defrost sensor offset 10 0 to 10 0 K 0 0 P 612 Info 1 sensor offset 10 0 to 10 0 K 0 0 P...

Страница 22: ...d in such a way that the lowest possible capacity is switched on If there is more than one combination of capacities that yields the same power then the first one switched on will be the one that is a...

Страница 23: ...arts per hour is exceeded the compressor will no longer start until the starting time of the earliest startup was at least one hour ago P 28 P 29 This is the time between two pulses when increasing or...

Страница 24: ...he pressure at which the economizer is released P 54 The pressure difference between releasing the economizer and blocking it again 4 5 Pressure sensors P 70 P 80 Pressure sensors with a variety of ra...

Страница 25: ...ure at which a minimum alert is triggered for the suction side P 101 Time delay before the alert is passed on P 102 Minimum pressure at which the compressors are blocked P 105 The pressure at which a...

Страница 26: ...cooling will come on and turn off again once it is below the setpoint P 622 Delta T for the suction side from the requested setpoint temperature If the thermostat is leading the requested suction sid...

Страница 27: ...tputs are labelled according to the position of the PCB in the controller and then by the input and output numbers on that PCB The PCBs are numbered as follows The inputs and outputs are numbered firs...

Страница 28: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 28 of 45...

Страница 29: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 29 of 45...

Страница 30: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 30 of 45...

Страница 31: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 31 of 45...

Страница 32: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 32 of 45...

Страница 33: ...GE display E2 Pressure sensor for the discharge side faulty Action Everything off E4 Temperature sensor for the discharge side faulty Action None no regulation function E11 High pressure alert Action...

Страница 34: ...r Document no 140744 version 1 3 Page 34 of 45 7 Functional flow 7 1 How the P band works on the suction side compressor side 7 2 Overview of the functional flow for 4 compressors when stepping compre...

Страница 35: ...s exceeded error message E 80 is displayed The controller then regulates using the steps calculated until that point It is also possible to use compressors with a valve lift The number of steps can be...

Страница 36: ...ity the step selected first will be the one that requires the fewest compressors to be switched off If that still leaves more than one equal step the one selected will be the one with the shortest swi...

Страница 37: ...The suction pressure is still too high so the next step is 0 0 1 step 5 4kW If compressors 1 and 2 are still in their minimum off time the controller will nevertheless switch of compressor 3 The resul...

Страница 38: ...140176 2 Do 805 000060 3 Di 805 000061 4 Do 805 000060 907 100020 MC3 SC Step Control 3 2x Press mA 3L VA 5x Pt1000 2L 8x Analog out U I 40x Digital in 18x Relays 0 uP 805 000057 1 Aio 805 140176 2 D...

Страница 39: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 39 of 45 View of MC3 SC Step Control 3 3V blue housing View of MC3 SC2 Step Control 2 2V blue housing...

Страница 40: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 40 of 45 10 Connection diagrams Position 0 805 000057 Processor PCB...

Страница 41: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 41 of 45 Position 1 805 140176 Analogue in out PCB HW config 140176...

Страница 42: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 42 of 45 Position 2 4 805 000060 Relay out PCB...

Страница 43: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 43 of 45 Position 3 5 805 000061 Digital input PCB...

Страница 44: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 44 of 45 Position 4 805 000074 Digital input Relay output PCB if used...

Страница 45: ...MC3 SC Stepped Controller Document no 140744 version 1 3 Page 45 of 45 11 Dimensions MC3 SC controller dimensions MC3 SC2 controller dimensions...

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