Operating Guide | VACON® NX Inverters FI4-FI8
X1
X2
X3
Illustration 32:
OPTA3
7.4 Installation of Option Boards
For information on how to install the option boards, see the option board manual or VACON
7.5 Galvanic Isolation Barriers
The control connections are isolated from mains. The GND terminals are permanently connected to I/O ground. See
The digital inputs on the I/O board are galvanically isolated from the I/O ground. The relay outputs are also double-isolated from each
other at 300 VAC (EN-50178).
66 | Danfoss A/S © 2019.07
Control Unit
®
NX I/O Boards User Manual.
illustration
AQ299433367205en-000101 / DPD00908
33.