DIAM4200 ©2018 AUGIER SA.
6021642 DIAM4200 5 to 20KVA rev 1-8.docx
IV-65
IV.4.3 FAULT DIAGNOSIS
See paragraph I.5.3 for a description of the following protections.
IV.4.3.1 LV power fault:
Symptom
Fault
Action
The CCR has stopped
The message:
“
ALARM : Bad supply
”
is displayed
LV power fault
Check the voltage level of the LV
power supply
Check parameter settings in the
“
Configuration
” menu
IV.4.3.2
“Open Circuit” fault:
Symptom
Fault
Action
The CCR has stopped
The message:
“
ALARM: I << Open Cir
.”
is displayed
Lighting loop open
Measure the continuity of the loop
(on the transformer primaries and
secondary’s)
Output current < 1.0A for more than
500 ms
Measure the output current value
Large load increase on the loop
caused by circuit switching
Measuring board to motherboard link
faulty
Check state of the ribbon cable
between
measuring
board
and
motherboard
Protection detection level setting on
motherboard
Check setting of the level in the
menu “
Alarms and warnings
” then
“
Open circuit
”
IV.4.3.3
“Overcurrent” fault:
Symptom
Fault
Action
The CCR has stopped
The message:
“
ALARM : I >> Level 1, 2 or 3”
or
“
ALARM : I >> Peak value
”
is displayed
Output current > programmed level
Large load decrease on the loop
caused by circuit switching
Overload
combined
with
load
decrease by switching
Check the number of ITs open due to
missing or fault lamps
Levels too low
Check
levels in the menu “
Alarms
and Warnings”
then “
Overcurrent
”.
