Danfoss VLT HVAC Series User Manual

NOTE!
This parameter cannot be adjusted while the motor is running.
3.6.4 4-6* Speed Bypass
Define the speed bypass areas for the ramps.
Some systems call for avoiding certain output frequencies or speeds due to resonance problems in the system. A maximum of four frequency or speed
ranges can be avoided.
4-60 Bypass Speed From [RPM]
Array [4]
Range: Function:
0 RPM* [0 - par. 4-13 RPM] Some systems call for avoiding certain output speeds due to resonance problems in the system.
Enter the lower limits of the speeds to be avoided.
4-61 Bypass Speed From [Hz]
Array [4]
Range: Function:
0 Hz* [0.0 - par. 4-14 Hz] Some systems call for avoiding certain output speeds due to resonance problems in the system.
Enter the lower limits of the speeds to be avoided.
4-62 Bypass Speed to [RPM]
Array [4]
Range: Function:
0 RPM* [0 - par. 4-13 RPM] Some systems call for avoiding certain output speeds due to resonance problems in the system.
Enter the upper limits of the speeds to be avoided.
4-63 Bypass Speed To [Hz]
Array [4]
Range: Function:
0 Hz* [0.0 - par. 4-14 Hz] Some systems call for avoiding certain output speeds due to resonance problems in the system.
Enter the upper limits of the speeds to be avoided.
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C6.22 - VLT
®
is a registered Danfoss trademark 3-45
3

Danfoss VLT HVAC Series Specifications

General

Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short circuit
Communication Interfaces	Profibus, Ethernet
Cooling Method	Forced convection
Ambient Temperature	-10°C to +40°C
Enclosure Rating	IP20, IP21, IP55
Output Voltage	0 - 100% of supply voltage