Improve system performance
VLT® HVAC Drive uses limited network bandwidth, and it requires less recources in the DDC controller due to the support of alarm and event notification. This can reduce traffic by more than 50% compared to other drives.
For VLT® HVAC Drive it is possible to read all analogue inputs and control all the analogue outputs on I/O options.
This means that when integrating a VLT® HVAC Drive into the control system it is possible to save more physical I/O points. VLT® HVAC Drive has objects defined to accept 3 separate feedbacks transmitted over BACnet.
Detailed information about warnings and alarms
VLT® HVAC Drive has points giving detailed information about alarms and warnings. DDC controllers can monitor these and see when an alarm or warning occurs and see why it’s occurred.
Examples: Earth fault, short circuit, over current, motor phase loss, motor thermal condition (thermistor or ETR), mains phase loss, live zero, Broken Belt, No Flow, Dry Pump, End of Curve etc.
Read multiple points in a telegram
With the BACnet option DDC controllers can read or write multiple points in one telegram. This helps to reduce network traffic which improves network bandwidth and the effectiveness of the BACnet network. It provides the ability to transfer all required points of the VLT® HVAC Drive in one request.
This is especially useful if the BMS regularly creates a "back-up" of the system.
Simultaneous synchronisation of built-in clocks.
VLT® HVAC Drives have a built-in clock that can be synchronized with the BMS network clock via BACnet. This eliminates a major problem on drives with battery backed-up stand alone real-time clocks which must be manually updated.
Built in and tested from factory
The Danfoss BACnet option is available factory installed and tested or can be added to the VLT® HVAC Drive as a field installed upgrade in existing installations.
