Danfoss VLT FC 102 Programming Manual page 571

Programming Guide | VLT® HVAC Drive FC 102
Analog I/O card
X42 1 2 3 4 5 6 7 8
Figure 113: Overview of Terminals, VLT® Analog I/O Option MCB 109
Figure 112 shows a typical air-handling unit (AHU). As shown in the illustration, adding an analog I/O option offers the possibility to
control all functions via the drive, such as inlet, return- and exhaust dampers, or heating/cooling coils with temperature and pressure
measurements being read by the drive.
The maximum current for the analog outputs 0–10 V is 1 mA.
Where live zero monitoring is used, it is important to disable the live zero-function on any analog inputs not being used for the
drive as part of the building management system decentral I/O.
Table 54: Relevant Parameters
Terminal Parameters
Analog inputs
X42/1
Parameter 26-00
Terminal X42/1
Mode, parameter
group 26-1* Analog
Input X42/1
X42/3
Parameter 26-01
Terminal X42/3
Mode, parameter
group 26-2* Analog
Input X42/3
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Control card
9 10 11 12 12 13 18 19 27 29 32 33 20 37 39 42 50 53 54 55
Terminal
Analog inputs
53
54
NOTICE
NOTICE
Parameters
Parameter group
6-1* Analog Input
53
Parameter group
6-2* Analog Input
54
Parameter Descriptions
Power card
01 02 03 04 05 06
Humidifier steps or
cooling steps
Terminal Parameters
Relays
Relay 1 terminal 1, Parameter group
2, 3 5-4* Relays
Relay 2 terminal 4, Parameter group
5, 6 5-4* Relays
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