Danfoss VLT User Manual

Figure 4.25: DC bus connections for enclosure B3. Figure 4.26: DC bus connections for enclosure B4.
Figure 4.27: DC bus connections for enclosure C3. Figure 4.28: DC bus connections for enclosure enclosure C4.
Please contact Danfoss if you require further information.
4.1.20 Brake Connection Option
The connection cable to the brake resistor must be shielded/armored.
Enclosure
A+B+C+D+F A+B+C+D+F
Brake resistor 81 82
Terminals R- R+
NOTE!
Dynamic brake calls for extra equipment and safety considerations. For further information, please contact Danfoss.
1. Use cable clamps to connect the shield to the metal cabinet of the adjustable frequency drive and to the decoupling plate of the brake resistor.
2. Dimension the cross-section of the brake cable to match the brake current.
4 Electrical installation VLT
®
HVAC Drive Instruction Manual
4-18 MG.11.A9.22 - VLT
®
is a registered Danfoss trademark
4

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)