ABB CSU-2LV, Installation And Maintenance Manual, Page: 73 / 84

ABB
ARC GUARD SYSTEM™ – CSU-2LV/2MV INSTALLATION AND MAINTENANCE GUIDE 73
Table 8 List of errors
Error code Description Recommended actions
Ix LL
Input x low light Degenerated LED at connected CSU-2/TVOC-2 unit. The unit in the
other end should be replaced.
Ix NL Input x no light Make sure that light is transmitted by units connected to the
optical input connector and that the optical cable is not damaged.
CS Lx/N Current sensor Lx/N Connect cable from current sensor.
IE PS Internal error power supply Check if auxiliary voltage to CSU-2 is low (>24VAC/DC), if not, it
is an internal power supply error in which case CSU-2 should be
replaced.
IE Ix Internal error input x CSU-2 should be replaced.
IE OO Internal error optical output
IE DC Internal error daisy chain
8.3.1 LED-lights
Table 9 LED on CSU-2
LED Description Recommended actions
Green Power
Red Over current
Red Error
Yellow Communication
Table 10 LED on current sensor inputs
LED Description Recommended actions
OFF
Current sensor inputs are not configured
Flashing Green
Current sensor cable are connected and configured
Red
Current sensor inputs are configured but not connected Connect cables from current sensor
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