Bühler technologies Nivotemp NT 61D - Table of Contents

Nivotemp NT 61D, Nivovent NV 71D
Contents
1 Introduction..................................................................................................................................................................................................................... 3
1.1 Intended Use......................................................................................................................................................................................................... 3
1.2 Functionality......................................................................................................................................................................................................... 3
1.2.1 Liquid level monitoring ......................................................................................................................................................................3
1.2.2 Temperature monitor .........................................................................................................................................................................3
1.3 Design types.......................................................................................................................................................................................................... 3
1.4 Model key NT61D .................................................................................................................................................................................................4
1.5 Model key NV71D .................................................................................................................................................................................................4
1.6 Scope of Delivery..................................................................................................................................................................................................4
2 Safety instructions......................................................................................................................................................................................................... 5
2.1 Important advice................................................................................................................................................................................................. 5
2.2 General hazard warnings .................................................................................................................................................................................6
3 Transport and storage .................................................................................................................................................................................................. 7
4 Setup and connection...................................................................................................................................................................................................8
4.1 Installation ............................................................................................................................................................................................................8
4.2 Electrical connections ........................................................................................................................................................................................9
4.3 Information on the correct operation of reed contacts in Bühler level switches.............................................................................9
4.4 Adjusting the level contacts...........................................................................................................................................................................10
5 Operation and control ................................................................................................................................................................................................. 11
5.1 Start-up procedure ............................................................................................................................................................................................11
5.2 LED statuses ......................................................................................................................................................................................................... 11
5.3 General key functions ...................................................................................................................................................................................... 12
5.4 Keylock enabled ................................................................................................................................................................................................. 12
5.5 Menu overview ...................................................................................................................................................................................................13
5.6 Changing basic settings .................................................................................................................................................................................. 14
5.6.1 Disabling normal error handling...................................................................................................................................................14
5.6.2 Set temperature unit.........................................................................................................................................................................14
5.6.3 Define switching outputs ................................................................................................................................................................ 15
5.6.4 Set display refresh rate ..................................................................................................................................................................... 15
5.6.5 Enable/disable keylock...................................................................................................................................................................... 15
5.6.6 Restore factory settings (Reset)......................................................................................................................................................16
5.7 Switching outputs..............................................................................................................................................................................................17
5.7.1 Switching output x: Definition of the switching characteristic...........................................................................................18
5.7.2 Switching output x: Upper switching limit (switching point)..............................................................................................19
5.7.3 Switching output x: Lower switching limit (switch-back point) ..........................................................................................19
5.7.4 Switching output x: Switch-on delay .......................................................................................................................................... 20
5.7.5 Switching output x: Switch-back delay ...................................................................................................................................... 20
5.7.6 Switching output x: Testing the switching output ................................................................................................................. 20
5.7.7 Change status LED display function .............................................................................................................................................21
5.8 Analogue outputs .............................................................................................................................................................................................22
5.8.1 Analogue output x: Assigning the upper limit......................................................................................................................... 22
5.8.2 Analogue output x: Lower limit assignment ............................................................................................................................ 22
5.8.3 Analogue output x: Signal type assignment..............................................................................................................................23
5.8.4 Analogue output x: Testing the analogue output ...................................................................................................................23
5.9 Diagnostic options ............................................................................................................................................................................................23
5.9.1 View logbook....................................................................................................................................................................................... 24
5.9.2 Maximum and minimum temperature ..................................................................................................................................... 24
5.9.3 Define switching output to log ......................................................................................................................................................25
5.9.4 Delay for storing the Min/Max Temperature ............................................................................................................................25
6 Cleaning and Maintenance.......................................................................................................................................................................................26
6.1 Replacing the filter element...........................................................................................................................................................................26
6.2 Adding small amounts of oil..........................................................................................................................................................................26
7 Service and repair......................................................................................................................................................................................................... 27
7.1 Troubleshooting ................................................................................................................................................................................................27
iBühler Technologies GmbH
BE100017 ◦ 01/2020