Vacon NXA series - Galvanic Isolation Barriers

5
vacon • 82 Installation
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
5.5 Galvanic isolation barriers
The control connections are isolated from the mains potential and the GND terminals are
permanently connected to ground. See Figure 55.
The digital inputs are galvanically isolated from the I/O ground. The relay outputs are additionally
double-isolated from each other at 300 VAC (EN-50178). See Figure 55.
Figure 55. Galvanic isolation barriers
L1 L2 L3
UVW
RO1/1
RO1/2
RO1/3
RO2/3
RO2/2
RO2/1
10Vref
GND
GND
+24V
AI1
AI2+
AI2 -
DIN1...
DIN3
CM A
DIN4...
DIN6
CM B
AO1+
AO2 -
DO1
n k6_1 5
TI1+
TI1-
Control I/O
ground
Digital input
group A
Digital input
group B
Analogue
output
Digital
output
Control
board
Control
panel
Gat e drivers
Power
board
11209.emf