Connecting The Failsafe Alarm Relay (If Equipped); Inserting/Removing The Microsd/Microsdhc Card - Siemens RUGGEDCOM i802 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 RUGGEDCOM i802.
The following shows the proper relay connections.
Figure 5: Failsafe Alarm Relay Wiring
1. Normally Open 2. Common
Section 2.4
Inserting/Removing the MicroSD/MicroSDHC
Card
The RUGGEDCOM i802 accepts a microSD/microSDHC card to support the following features:
• Configuration update and backup
• Redundant firmware image
• Greatly expanded logging capability
• Fault-tolerant firmware update
CAUTION!
Configuration hazard – risk of data loss. The microSD/microSDHC card must not be removed or
replaced during normal operation of the device. Make sure the device is powered down before
removing or inserting the card.
CAUTION!
Mechanical/electrical hazard – risk of damage to the microSD/microSDHC card.
• Do not expose the microSD/microSDHC car to extreme temperatures or humidity.
8
3. Normally Closed
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Connecting the Failsafe Alarm Relay (If Equipped)
RUGGEDCOM i802
Installation Guide