Alarms; Output Power Alarm; Gps Alarm; Main/Spare Operation - OBELUX CSW-DCW Manual

7.6 Alarms

There are several types of alarms to indicate possible problems in the system.
7.6.1

Output power alarm

Over/Under power alarm is raised when the output power of individual output channel is outside the user
defined window. Output alarm LED is turned on and alarm relay is triggered when the output power on the
output channel is too high. Alarm relay is also triggered when the output power is too low. There is a small
delay implemented in to this feature to minimize the amount of unnecessary alarms. CSW will try to recover
to normal operation when power alarm is triggered.
When the output power is close to the limits, the ON LED will turn orange. In this case the power alarm
window should be adjusted so that unnecessary alarms can be avoided. Normally the ON LED is green.
7.6.2

GPS alarm

When the CSW powered up the GPS alarm is triggered after 30min if GPS signal is not available. In normal
operation GPS alarm is triggered if valid GPS time pulses are not received for 3 hours. CSW-DCW will also
try to clear the error when GPS received. This way, GPS synchronization alarms caused by poor weather or
similar will probably clear without any intervention.

7.7 Main/Spare operation

The Main/Spare operation changes the output layout of the CSW-DCW to use two Main/Spare output
combinations. If the light unit connected to the main output fails, the spare light unit is used instead. CSW will
not try to recover to the main output after it switches to the spare output channel. Alarms are generated as in
normal operation.
First pair:

Output 1 (Main 1)

Output 2 (Spare 1)
Second pair

Output 3 (Main 2)

Output 4 (Spare 2)
© Obelux Oy 2016
Obelux Oy, Kutomotie 6 B, 00380 Helsinki FINLAND
Technical information in this document is subject to change without notice.
CSW-DCW – Manual
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