Danfoss VLT FC 302 User Manual

3.4.10 Power and Control Wiring for
Unscreened Cables
WARNING
INDUCED VOLTAGE
Induced voltage from coupled output motor cables
charges equipment capacitors even with the equipment
turned off and locked out. Run motor cables from
multiple frequency converters separately. Failure to run
output cables separately could result in death or serious
injury.
CAUTION
COMPROMISED PERFORMANCE
The frequency converter runs less efficiently if wiring is
not isolated properly. To isolate high frequency noise,
place the following in separate metallic conduits:
•
power wiring
•
motor wiring
•
control wiring
Failure to isolate these connections could result in less
than optimum controller and associated equipment
performance.
Because the power wiring carries high frequency electrical
pulses, it is important to run input power and motor
power in separate conduit. If incoming power wiring is in
the same conduit as motor wiring, these pulses can couple
electrical noise back onto the power grid. Isolate control
wiring from high-voltage power wiring.
When screened/armoured cable is not used, at least 3
separate conduits are connected to the panel options
cabinet (see Illustration 3.20).
Stop
Start
Speed
Control
Line
Power
Separate Conduit
Motor
130BB447.10
Illustration 3.20 Proper Electrical Installation Using Conduit
Installation Operating Instructions
28 Danfoss A/S © Rev. 2014-07-29 All rights reserved. MG37A202
33

Danfoss VLT FC 302 Specifications

General

Brake Function	Built-in brake chopper in all units up to 22 kW
Output Voltage Range	0-100% of input voltage
Power Range	0.37 kW
Control Modes	VVCplus, Flux, U/f
Protection Features	Overvoltage, undervoltage, overcurrent, short circuit, overtemperature, overload
Communication Options	Modbus RTU, BACnet, Ethernet/IP, Profinet, Profibus, CANopen, DeviceNet
Ambient Temperature Range	-10°C to +50°C (derating above +40°C)
Enclosure Rating	IP20, IP21, IP55
Cooling Method	Air-cooled
Input Voltage	200-240V, 380-480V, 525-600V