Table of Contents
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Operating and Maintenance Instructions
1.0
Safety Notice .............................................................................................................................................. 5
2.0
Introduction ................................................................................................................................................. 6
3.0
Overview .................................................................................................................................................... 7
3.1 Specification .................................................................................................................................................. 7
3.2 Installation ..................................................................................................................................................... 7
3.3 Hot plugging .................................................................................................................................................. 7
3.4 RS485 wiring installation ............................................................................................................................... 7
4.0 Configuration and first use of the MDC.............................................................................................................. 8
4.1 Electrical connection - general information ................................................................................................... 8
4.2 General and Initial Power ON ....................................................................................................................... 8
4.3 Configuring the Fan Array ............................................................................................................................. 9
4.3.1 Configuring the MDC with fans that are in their factory default setting .................................................. 9
4.3.2 Auto addressing fans using the fan's serial numbers .......................................................................... 10
4.3.3 Configuring the MDC with fans that have been pre-configured ........................................................... 10
4.4 Fan Status screen ....................................................................................................................................... 11
4.5 Power Meter screen .................................................................................................................................... 12
4.6 Changing the fan addressing order ............................................................................................................. 12
5.0
Operating Modes ...................................................................................................................................... 13
5.1 General ....................................................................................................................................................... 13
5.2 Accessing the main menu ........................................................................................................................... 13
5.3 Monitor mode (default operation) ................................................................................................................ 13
5.3.1 Monitor mode: single fan connection ................................................................................................... 14
5.3.2 Monitor mode: multiple fan connection ................................................................................................ 14
5.3.3 Monitor mode: pressure sensor connection - differential pressure or volume measurement .............. 15
5.4 Monitor & Control mode .............................................................................................................................. 15
5.4.1 General ................................................................................................................................................ 15
5.4.1.2 Measuring the fan performance using a pressure sensor ................................................................. 15
5.4.1.3 Control options in Monitor & Control mode ....................................................................................... 16
5.4.2.1 0-10V Input control option using a potentiometer and 10VDC supply from the fans......................... 16
5.4.2.2 0-10V Input control option using potentiometer and the on-board 10VDC supply ............................ 17
5.4.2.2 0-10V Input control option using an external 0-10V supply............................................................... 17
5.4.3 Modbus control option ......................................................................................................................... 17
5.4.4 Keypad control option .......................................................................................................................... 18
...................................................................................................................................................................... 18
5.5 Constant Volume/Constant Pressure operating mode ................................................................................ 19
5.5.1 General ................................................................................................................................................ 19
5.5.2 Constant volume/constant pressure mode .......................................................................................... 19
5.6 Modbus relay operating mode ..................................................................................................................... 20
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