Danfoss Native BACnet VLT HVAC Drive, Operating Instructions Manual, Page: 13 / 31

4.1.2 Control Word Time-out Function
8-03 Control Timeout Time and 8-04 Control Timeout Function
are not enabled in this version of the BACnet option.
4.2 Example of a simple setup of BACnet
This example shows the necessary steps to set up the FC102
BACnet interface with the following system requirements:
•
MS/TP running at 38,400 Baud
•
MAC address 20 for the FC102 on the MS/TP
network
•
Device Instance number 1025 for the FC102
•
Highest number of a Master device is 35
•
Start/stop of FC from BACnet only
•
Reference from BACnet
•
Read status of FC (Actual speed)
Set the following parameters:
Parameter
Value
8-30 Protocol BACnet [5]
8-31 Address 20
8-32 Baud Rate 38,400 Baud [4]
8-50 Coasting Select Bus [1]
8-70 BACnet Device Instance 1025
8-72 MS/TP Max Masters 35
After the parameters have been set according the table
above, the drive has to be unpowered and repowered before
the changes take effect. When the frequency converter is
detected by the BMS, the drive can be controlled by BV:1,
which will start the motor if set to [1]. Setting AV:1 will set
the speed reference of the drive. The actual speed can be
monitored via AV:3. See also
Analog Input- and Output
Objects section.
How to Configure the System
VLT
®
HVAC Drive Native BACnet Operating Instructions
12 MG.14.C1.02 - VLT
®
is a registered Danfoss trademark
4 4