Connecting The Failsafe Alarm Relay - Siemens RUGGEDCOM RSG2288 Installation Manual

RUGGEDCOM RSG2288
Installation Guide
Figure 14: Antenna and Lightning Protector Assembly
1. RUGGEDCOM RSG2288
NOTE
Although active GPS antennas have gain, depending on the length of the coaxial cable used, the
gain may be insufficient, in which case a line amplifier is required.
Most active antennas include filters. However, if there is a high potential for electromagnetic
interference, such as from the near field of a radio transmitter, additional antenna line filtering may
be necessary.
3. [Optional] Install one or more line amplifiers, as required.
4. If installed indoors, install a lightning arrestor at the entrance to the building and one near the RUGGEDCOM
RSG2288.
5. Connect the lightning protector to the the GPS IN port.
Section 2.4

Connecting the Failsafe Alarm Relay

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 RUGGEDCOM RSG2288.
The following shows the proper relay connections.
Connecting the Failsafe Alarm Relay
1
2
2. Drain Wire 3. Shielded Coaxial Cable
3 4 3 5
2
4. Lightning Protector
Chapter 2
Installing Device
6
5. Ground Wire 6. Antenna
19