Shield M10U, Руководство пользователя, Страница: 59 / 72

Chapter 7 Operator Control and Display Panel
50 Shield M10U user manual
First check if relevant alarm exists, such as “bypass circuit breaker open”, “Byp
Sequence Err” and “Ip Neutral Lost”. If there is any relevant alarm, first clear this
alarm.
1. Then check and confirm if the bypass voltage and frequency displayed on the
LCD are within the setting range. Note that the rated voltage and frequency are
respectively specified by “Output Voltage” and “Output Frequency”.
2. If the displayed voltage is abnormal, measure the actual bypass voltage and
frequency. If the measurement is abnormal, check the external bypass power
supply. If the alarm occurs frequently, use the configuration software to
increase the bypass high limit set point according to the user’s suggestions
19 Bypass Module Fail Bypass Module Fails. This fault is locked until power off. Or bypass fans fail.
20
Bypass Module Over
Load Bypass current is over the limitation. If bypass current is under 135% of the rated
current. The UPS alarms but has no action.
21 Bypass Over Load Tout The bypass overload status continues and the overload times out.
22 Byp Freq Over Track
This alarm is triggered by an inverter software routine when the frequency of
bypass voltage exceeds the limit. The alarm will automatically reset if the bypass
voltage becomes normal.
First check if relevant alarm exists, such as “bypass circuit breaker open”, “Byp
Sequence Err” and “Ip Neutral Lost”. If there is any relevant alarm, first clear this
alarm.
1. Then check and confirm if the bypass frequency displayed on the LCD are
within the setting range. Note that the rated frequency are respectively
specified by “Output Frequency”.
2. If the displayed voltage is abnormal, measure the actual bypass frequency. If
the measurement is abnormal, check the external bypass power supply. If the
alarm occurs frequently, use the configuration software to increase the bypass
high limit set point according to the user’s suggestions
23 Exceed Tx Times Lmt
The load is on bypass because the output overload transfer and re-transfer is
fixed to the set times during the current hour. The system can recover
automatically and will transfer back to the inverter with 1 hour
24 Output Short Circuit
Output shorted Circuit.
Fist check and confirm if loads have something wrong.
Then check and confirm if there is something wrong with terminals, sockets or
some other power distribution unit.
If the fault is solved, press “Fault Clear” to restart UPS.
25 Battery EOD
Inverter turned off due to low battery voltage. Check the mains power failure
status and recover the mains power in time
26 Battery Test System transfer to battery mode for 20 seconds to check if batteries are normal
27
Battery Test OK Battery Test OK
28
Battery Maintenance System transfer to battery mode until to be 1.1*EOD voltage to maintenance
battery string
29
Battery Maintenance
OK Battery maintenance succeed
30
Module inserted Power Module is inserted in system.
31
Module Exit Power Module is pulled out from system.
32
Rectifier Fail The N# Power Module Rectifier Fail, The rectifier is fault and results in rectifier
shutdown and battery discharging.
33
Inverter Fail The N# Power Module Inverter Fail. The inverter output voltage is abnormal and
the load transfers to bypass.
34
Rectifier Over Temp. The N# Power Module Rectifier Over Temperature. The temperature of the
rectifier IGBTs is too high to keep rectifier running. This alarm is triggered by the
signal from the temperature monitoring device mounted in the rectifier IGBTs.
The UPS recovers automatically after the over temperature signal disappears.
If over temperature exists, check: