NS3000 UPS 60KVA~120KVA User Manual
41
60
INV DATA CAN
Fail
DATA communication of inverter CAN bus is abnormal. Please
check if communication cables are not connected correctly.
61
Power Share Fail
The difference of two or more power modules’ output current
in system is over limitation. Please adjust output voltage of
power modules and restart UPS.
62
Sync Pulse Fail
Synchronization signal between modules is abnormal. Please
check if communication cables are not connected correctly.
63
Input Volt Detect
Fail
Input voltage of N# power module is abnormal.
Please check if the input cables are connected correctly.
Please check if input fuses are broken.
Please check if utility is normal.
64
Battery
Volt
Detect Fail
Battery voltage is abnormal.
Please check if batteries are normal.
Please check if battery fuses are broken on input power board.
65
Output Volt Fail
Output voltage is abnormal.
66
Bypass
Volt
Detect Fail
Bypass voltage is abnormal.
Please check if bypass breaker is closed and is good.
Please check if bypass cables are connected correctly.
67
INV Bridge Fail
Inverter IGBTs are broken and opened.
68
Outlet Temp Error
Outlet temperature of power module is over the limitation.
Please check if fans are abnormal.
Please check if PFC or inverter inductors are abnormal.
Please check if air passage is blocked.
Please check if ambient temperature is too high.
69
Input
Curr
Unbalance
The difference of input current between every two phases is
over 40% of rated current.
Please check if rectifier’s fuses, diode, IGBT or PFC diodes
are broken.
Please check if input voltage is abnormal.
70
DC Bus Over Volt
Voltage of DC bus capacitors is over limitation. UPS shutdown
rectifier and inverter.
71
REC Soft Start
Fail
While soft start procedures are finished, DC bus voltage is
lower than the limitation of calculation according utility voltage.
Please check
1. Whether rectifier diodes are broken
2. Whether PFC IGBTs are broken
3. Whether PFC diodes are broken
4. Whether drivers of SCR or IGBT are abnormal
5. Whether soft start resistors or relay are abnormal
72
Relay
Connect
Fail
Inverter relays are opened and cannot work or fuses are
broken.
73
Relay
Short
Circuit
Inverter relays are shorted and cannot be released.
74
PWM Sync Fail
PWM synchronizing signal is abnormal
75
Intelligent Sleep
UPS works in intelligent sleep mode. In this mode, the power
Summary of Contents for NS3000 Series
Page 6: ......
