Main Menu - Analog I/O Option Mcb 109 - Group - Danfoss VLT FC 100 Series Programming Manual

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VLT HVAC Drive Programming Guide

3.24. Main Menu - Analog I/O Option MCB 109 - Group 26

3.24.1. Analog I/O Option MCB 109, 26-**
The Analog I/O Option MCB 109 extends the functionality of VLT HVAC Drive frequency converters, by adding a number of additional, programmable
analog inputs and outputs. This could be especially useful in Building Management System installations where the frequency converter may be used as
de-central I/O, obviating the need for an outstation and thus reducing cost.
Consider the diagram:
This shows a typical Air Handling Unit (AHU). As can be seen, the addition of the Analog I/O option offers the possibility to control all of the functions
from the frequency converter, such as inlet-, return- and exhaust dampers or heating/cooling coils with temperature and pressure measurements being
read by the frequency converter.
NB!
The maximum current for the analog outputs 0-10V is 1mA.
NB!
Where Live Zero Monitoring is used, it is important that any analog inputs not being used for the frequency controller, i.e. being used
as part of the Building Management System decentral I/O, should have their Live Zero function disabled.
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
3. Parameter Description
223
3