Vacon NX User Manual

10
vacon • 156 Active front end (NXA)
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
10.4 Active Front End unit technical data
The technical data for the active front end unit, see table below.
*) NX_8 AC drives only available as Ch6x AFE/BCU/INU units.
Table 61. Technical data
Mains connection
Input voltage U
in
NX_5: 400…500 VAC (–10%…+10%); 465…800 VDC
(–0%…+0%)
NX_6: 525…690 VAC (–10%…+10%); 640…1100 VDC
(–0%…+0%)
NX_8: 525…690 VAC (–10%…+10%); 640…1200 VDC
(–0%…+0%)
*)
Input frequency 45…66 Hz
Connection to mains Once per minute or less
DC bank capacitance
Voltage class 500 V:
Voltage class 690 V:
Ch3 (16-31A units): 410 μF
Ch3 (38-61A units): 600 μF
CH4: 2400 μF
CH5: 7200 μF
CH61: 10800 μF
CH62/CH72: 10800 μF
CH63: 21600 μF
CH64/CH74: 32400 μF
2*CH64/2*CH74: 64800 μF
CH61: 4800 μF
CH62/CH72: 4800 μF
CH63: 9600 μF
CH64/CH74: 14400 μF
2*CH64/2*CH74: 28800 μF
Supply network
Networks TN, TT, IT
Short circuit current Maximum short circuit current has to be < 100 kA.
Rated apparent power
The rated apparent power of the supply network
including generators and/or transformers should
be greater than 50% of the total rated apparent
power of the Active Front End units which are con-
nected to the network.
DC output
connection
Voltage
1.35 x U
in
x 1.1 (default DC link voltage boosting is
110%)
Continuous output
current
Rated current at nominal inflow cooling water
temperature according to dimensioning charts.
Control
characteristics
Control method Open Loop Vector Control
Switching frequency NXA: Factory setting 3.6 kHz

Vacon NX Specifications

General

Product Type	AC Drive
Control Method	Scalar Control
Enclosure	IP00, IP21
Communication	Ethernet
Safety	STO (Safe Torque Off)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Ambient Temperature Range	-10°C to +50°C (with derating above +40°C)
Cooling Method	Air-cooled, Liquid-cooled