
Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 59
0503-037
Figure 40 Relay Module
The numbers refer to Figure 40 above:
Indication led for the relay 1 or 3
Indication led for relay 2 or 4
WARNING
The relay module may contain dangerous voltages even if the
transmitter power has been disconnected. Before working on the relay
module you must switch off
both the transmitter and the voltage
connected to the relay terminals.
WARNING
mains power to relay unit without grounding the
Commentaires sur ces manuels