Chapter 3 LCD Panel
48
HSTP3T 60-500 KE User Manual
2. If this alarm is true, measure the actual output current to
confirm if the displayed value is correct.
Disconnect non-critical load. In parallel system, this alarm will be
triggered if the load is severely imbalanced.
37
Inverter Overload
Tout
N# Power Module Inverter Over Load Timeout. The UPS
overload status continues and the overload times out.
Note:
The highest loaded phase will indicate overload timing-out first.
When the timer is active, then the alarm “unit over load” should
also be active as the load is above nominal.
When the time has expired, the inverter Switch is opened and the
load transferred to bypass.
If the load decreases to lower than 95%, after 2 minutes, the
system will transfer back to inverter mode. Check the load (%)
displayed in LCD so as to confirm if this alarm is true. If LCD
displays that overload happens, then check the actual load and
confirm if the UPS has over load before alarm happens.
38
Inverter Over
Temp.
The N# Power Module Inverter Over Temperature.
The temperature of the inverter heat sink is too high to keep
inverter running. This alarm is triggered by the signal from the
temperature monitoring device mounted in the inverter IGBTs.
The UPS recovers automatically after the over temperature
signal disappears.
If over temperature exists, check:
Whether the ambient temperature is too high.
Whether the ventilation channel is blocked.
Whether fan fault happens.
Whether inverter overload time is out.
39
On UPS Inhibited
Inhibit system transfer from bypass to UPS (inverter). Check:
Whether the power module’s capacity is big enough for load.
Whether the rectifier is ready.
Whether the bypass voltage is normal.
40
Manual Transfer
Byp
Transfer to bypass manually
41
Esc Manual
Bypass
Escape from “transfer to bypass manually” command. If UPS has
been transferred to bypass manually, this command enable UPS
to transfer to inverter.
42
Battery Volt Low
Battery Voltage is Low. Before the end of discharging, battery
voltage is low warning should occur. After this pre-warning,
battery should have the capacity for 3 minutes discharging with
full load.
43
Battery Reverse
Battery cables are connected not correctly.
44
Inverter
Protect
The N# Power Module Inverter Protect. Check:
Whether inverter voltage is abnormal
Whether inverter voltage is much different from other modules, if
yes, please adjust inverter voltage of the power module
separately.
45
Input Neutral Lost
The mains neutral wire is lost or not detected. For 3 phases UPS,
it’s recommended that user use a 3-poles breaker or switch
between input power and UPS.
46
Bypass Fan Fail
At least one of bypass module Fans Fails
47
Manual Shutdown The N# Power Module is manually shutdown. The power module
