Siemens SIMATIC NET RUGGEDCOM M969, Руководство по установке

Страница: 20 / 56

Installing the Device
2.3 Connecting the Failsafe Alarm Relay
To mount the device to a panel, do the following:
1. Place the device against the panel and align the flanges with the mounting
holes.
1
1
Flange
Figure 2.1 Panel Mounting (Typical)
2. Install the supplied screws to secure the flanges to the panel.
2.3 Connecting the Failsafe Alarm Relay
The Failsafe output relay is provided to signal critical error conditions that may occur
on the RUGGEDCOM M969 series switches. The contacts are energized upon power
up of the unit and remain energized until a critical error occurs.
One common application for this output is to signal an alarm if a power failure or
removal of control power occurs.
RUGGEDCOM M969
Installation Manual, 01/2021, C79000-G8976-1039-03
11