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Parameter
AC HL: High loss of alternative AC input
AC LL: Low loss of alternative AC input
Inv HL: High loss of inverter AC input
Inv LL: Low loss of inverter AC input
Priority
Setting Option
xxxV
xxxV
xxxV
xxxV
Selectable at 1) On line and 2) Off line
Table H–STS parameter settings
6.4.1
Fan Speed Control
Output current and NTC temperature decide the fan speed. The NTC temperature has the influential priority.
When the temperature is above 70ºC, the fan will work in full speed. However, when the temperature is less than
60ºC, the fan works according to the different load current. The fan has four levels of speed, the following tables
show the relation between fan speed and load current:
Load
Load > 75%
75% ≥ Load > 50%
50% ≥ Load > 25%
25% ≥ Load
Detect Back
<=70%
<=45%
<=20%
Speed
Speed1
Speed2
Speed3
Speed4
Duty
100%
2/3
1/3
0
Table I–One fan, rotate speed1
Load
Load > 75%
75% ≥ Load > 50%
50% ≥ Load > 25%
25% ≥ Load
Detect Back
<=70%
<=45%
<=20%
Speed
Speed1
Speed2
Speed3
Speed4
Duty
2/3
1/3
1/4
0
Table J–Two fans, rotate speed2
Relation between fan speed and load current:
Argus Technologies Ltd.
014-114-C0 Rev D WC
Printed in Canada. © 2008 Argus Technologies Ltd. ARGUS and INEX are registered trademarks of Argus Technologies Ltd. All Rights Reserved.
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