Extends BMS capacity
When integrated into the BMS network, all the HVAC Drive I/O points are available as remote I/O’s to extend BMS’s capacity. For example, room temperature sensors (Pt1000/Ni1000) can be directly connected.
Resonance Monitoring
By pressing a few buttons on the Local Control Panel the drive can be set to avoid frequency bands at which connected fans create resonance in the ventilation system. This improves building comfort.
Intelligent AHU functions
The VLT® HVAC Drive handles logical rules and input from sensors, real-time functionality, and time-related actions. This enables the HVAC Drive to control a wide range of functions, including:
- Weekend and working day
- Pperations Cascaded P-PI for
temperature control
- Multi-zone pressure control
- Flow balancing between fresh
and outlet air
Belt Monitoring
From the relation between current and speed, the VLT® HVAC Drive is able to
reliably recognise a broken belt. Lack of air flow detected immediately, first
cost and down-time is reduced.
Fire Override Mode
In Fire Override Mode the VLT® HVAC Drive will not react to control signals, warnings or alarms. It will continue its reliable operation as long as possible and run until it eventually selfdestructs.
Stairwell Pressurization
In the event of fire, the VLT® HVAC Drive can maintain a higher level of air pressure in stairwells than in other parts of the building and ensure that fire escapes remain free of smoke.
Fan features
|
Benefits
|
Smart Logic Controller
|
Lower installation cost
Valuable data points are saved
|
Auto tune PID controller
|
Less maintenance
|
I/O points are available as remote I/O’s
|
Extend the system's capacity
|
Resonance Monitoring
|
Noise reduction
|
Cascaded P-PI for temperature control
|
Maintenance free
|
Multi-zone pressure control
|
Problem free operation in harsh environments
|
Flow balancing
|
No external cooling or oversizing necessary
|
AEO using Cos phi algorithm
|
Up to extra 10% savings
|
Flying start
|
Can control “free-wheeling” fan in both directions
|
Improved Floating Head pressure
|
Reduced power consumption
|
SW algorithm to detect abnormal overall
input power
|
Eliminate need for multi motor klixon
|
| VLT® Pre-heat function |
Eliminate anti-condensation heater |