Alpha Technologies INEX Inverter System - Manual (Page 37)

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. Page 27 of 43
Parameter Setting Option
AC HL: High loss of alternative AC input xxxV
AC LL: Low loss of alternative AC input xxxV
Inv HL: High loss of inverter AC input xxxV
Inv LL: Low loss of inverter AC input xxxV
Priority 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 Detect Back Speed Duty
Load > 75% Speed1 100%
75% ≥ Load > 50% <=70% Speed2 2/3
50% ≥ Load > 25% <=45% Speed3 1/3
25% ≥ Load <=20% Speed4 0
Table I–One fan, rotate speed1
Load Detect Back Speed Duty
Load > 75% Speed1 2/3
75% ≥ Load > 50% <=70% Speed2 1/3
50% ≥ Load > 25% <=45% Speed3 1/4
25% ≥ Load <=20% Speed4 0
Table J–Two fans, rotate speed2
Relation between fan speed and load current: