Lcl Wiring Diagram - Vacon NX Active Front End User Manual

vacon • 28
NOTE! The minimum fibre cable bending radius is 50 mm.
NOTE! Terminals X2 and X3 can be in use simultaneously. However, if the +24 V supply from the
control I/O terminals (e.g. from board OPT-A1) is used, this terminal must be protected with a diode.
4.7.2

LCL wiring diagram

The LCL filter contains a choke on the mains side, capacitors and a choke on the AFE side,
Figure 16. The LCL also includes capacitors connected against ground potential. There are
resistors connected across the capacitors for discharging them when the LCL filter is disconnected
from the input power. The discharging resistors are 10 MΩ, 500 V and 0,5 W.
4
Figure 15. Optical cable terminals in the unit (FI13 example)
Optical terminals on adapter board
Gate control enable
H1
Phase U control
H2
Phase V control
H3
Phase W control
H4
ADC synchronization
H5
VaconBus data from control board to ASIC
H6
VaconBus data from ASIC to control board
H7
Other terminals on adapter board
Control board connection
X1
Supply voltage 24 V
X2
Supply voltage 24 V
• Max. current 1A
X3
• Terminal #1: +
• Terminal #2: –
(from power unit ASIC)
in
(customer);
in
Tel. +358 (0) 201 2121 • Fax +358 (0)201 212 205
Active Front End (AFE)