UPS 30-300kVA User Manual
Operator Control and Display Panel
49
Error
are connected correctly.
18
Bypass Volt
Abnormal
This alarm is triggered by an inverter software routine when the
amplitude or 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 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.
