e
3
0
b
g
0
2
0
.1
0
21
22
23
25
26
28
29
X1
X2
X3
Illustration 53: OPTA3
7.4 Installation of Option Boards
For information on how to install the option boards, see the option board manual or VACON
®
NX I/O Boards User Manual.
7.5 Galvanic Isolation Barriers
.
The digital inputs on the I/O board are galvanically isolated from the I/O ground (PELV). The relay outputs are also double-isolated from
each other at 300 VAC (EN-50178).
Control Unit
Operating Guide | VACON® NXS/NXP Air-cooled
AQ275638903263en-000301 / DPD00910| 109
Danfoss A/S © 2020.02