Connecting The Failsafe Alarm Relay - Siemens RUGGEDCOM RX1500 Installation Manual

RUGGEDCOM RX1500
Installation Guide
1
Figure 9: DC Terminal Block Wiring
1. Pluggable Terminal Block for HI, 24P and 48P Power Supplies
3. Positive (+) Terminal
2. Connect the negative wire from the power source to the negative (-) terminal on the terminal block.
3. Using a braided wire or other appropriate grounding wire, connect the ground terminal to the chassis
ground connection. The surge ground terminal is used as the ground conductor for all surge and transient
suppression circuitry internal to the unit.
4. Connect the ground terminal on the power source to the chassis ground terminal on the device. For more
information, refer to
Section 2.3

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 ROX II. One common application for this
relay is to signal an alarm if a power failure occurs. For more information, refer to the ROX II User
Guide for the RX1500.
The following shows the proper relay connections.
Connecting the Failsafe Alarm Relay
3 4 5
+
4. Negative (-) Terminal 5. Ground Terminal
Section 2.4, "Grounding the
3
+
2. Screw-Type Terminal Block for HIP, 24 and 48 Power Supplies
Device".
Installing the Device
4 5
Chapter 2
2
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