Xtreme Power Conversion Corporation
E90 Service Manual
Page 65
Uninterruptible Power Supply
No.
UPS Alarm
Software judgment
Buzz
LED
Condition 1
Condition 2
Condition 3
Condition 4
17
Large differ-
ence between
±Bus
30V difference
between ±bus
long
beep
Fault
ON
18
Soft start fail
10s later, soft
start bus volt
-
age is lower
than 300V
During the soft start, ±bus
voltage <1.2 times of in-
put voltage for 120ms
long
beep
Fault
ON
19
Rectifier over-
temperature
Last 0.2s>77°C
show PFC over
temperature
twice/s
Fault
ON
20
Inv. Over-tem-
perature
Last 0.2s>77°C
show inverter
over tempera
-
ture
twice/s
Fault
ON
21
Input neutral
loss
twice/s
Fault
ON
22
Battery rbattery volt-
age< -50V
-battery volt-
age >+50V
twice/s
Fault
ON
23
Parallel con
-
nection fault
Parallel cable
fault under the
parallel : 10ms
twice/s
Fault
ON
24
CAN communi-
cation fault
Parallel number more than 1
for single unit and powered
UPS is no more than 1 unit
twice/s
Fault
ON
25
Share current
when parallel
fault
twice/s
Fault
ON
26
Battery high
voltage
Setting Charge v20V
once/s
Fault
flash
27
Input phase
sequence
reverse
Obtain by algorithm
once/s
Fault
flash
28
Bypass reverse
Obtain by algorithm
once/s
Fault
flash
29
Output short
circuit
X phase Output voltage is lower than rated 30%&&X phase Out-
put current is 70% of rated current
once/s
Fault
flash
30
Rectifier over-
current
once/s
Fault
flash
31
Bypass over-
current
X phase Bypass Output current greater than the rated 125%
once/s
BPS
flash
32
Over load
X phase load rate( Inv. or Bypass) greater than rated 105%
once/s
INV or
BPS
flash
