Connecting The Failsafe Alarm Relay (If Equipped); Connecting To The Device - Siemens RUGGEDCOM i803 Installation Manual

Chapter 2
Installing the Device
Section 2.3

Connecting the Failsafe Alarm Relay (If Equipped)

The failsafe relay can be configured to latch based on alarm conditions. The NO (Normally Open) contact is
closed when the unit is powered and there are no active alarms. If the device is not powered or if an active alarm
is configured, the relay opens the NO contact and closes the NC (Normally Closed) contact.
NOTE
Control of the failsafe relay output is configurable through ROS. One common application for this relay
is to signal an alarm if a power failure occurs. For more information, refer to the ROS User Guide for
the i803.
The following shows the proper relay connections.
Figure 5: Failsafe Alarm Relay Wiring
1. Normally Open 2. Common
Section 2.4

Connecting to the Device

The following describes the various methods for accessing the ROS console and Web interfaces on the device.
For more detailed instructions, refer to the ROS User Guide for the i803.
RS232 Console Port
Connect a PC or terminal directly to the RS232 console port to access the boot-time control and ROS interfaces.
The console port provides access to ROS's console and Web interfaces.
IMPORTANT!
The console port is intended to be used only as a temporary connection during initial configuration or
troubleshooting.
Connection to the console port is made using an RJ45-to-DB9 console cable. The following is the pin-out for the
console port:
8
3. Normally Closed
1 2 3
Connecting the Failsafe Alarm Relay (If Equipped)
RUGGEDCOM i803
Installation Guide