User Manual
Hipulse - Single Phase ‘1+N’ UPS System | 130 kVA - 110V |
7.2Display Panel Messages
The message displayed on Hipulse can be categorized into types:-
(a)ALARM messages - these are messages which needed urgent attention and warn of a UPS shutdown or imminent shutdown the load would normally transfer to the bypass supply if it is available. All alarm messages are accompanied by an audible warning.
(b)WARNING messages - these are the messages generated to warn or confirm to the operator of action taken (i.e. if the rectifier a.c. input supply power switch was opened the Warning message would read RECTIF. SWITCH OPEN).
The following table lists the various messages displayed on the operator panel together with a description of their interpretation.
Sr. No. | Display Message Alarm | Interpretation |
1. | EMERGENCY STOP | This alarm indicates that the UPS was shut down by means of the |
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| local or remote (if fitted) Emergency Power Off push button (EPO) |
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| which is normally due to operation action – investigate the cause |
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| for pressing the button. If this button was not pressed then check |
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| the continuity of the circuit to the Remote switch, Customer |
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| connections, Auxiliary terminal block X4; pin 5 and 6; normally |
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| closed. |
2. | INV. OFF | The INV. OFF alarm is active whenever the inverter is not producing |
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| its correct output voltage, either because it has been switched OFF |
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| or due to an internal fault, it will normally be accompanied by one |
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| or more of the other inverter fault conditions. |
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3. | INV: OVERVOLTAGE | Most of the inverter fault messages are self explanatory, however |
| INV: UNDERVOLTAGE | the WAVEFORM ERR informs the operator that the output voltage |
| OUTPUT: NO VOLTAGE | peak has flattened caused by an internal inverter problem and |
| OUTPUT: WAVEFORM ERR | therefore the output will be out of limits. |
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4. | INV. OVERTEMPER. | Over temperature is sensed by a |
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| operating) fitted to each inverter heat sink. If an over temperature |
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| condition arises, the audible alarm will accompany this message; |
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| the inverter stops and load transfers to Bypass after 3 minutes. |
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5. | OVERTEMP. SHUTDOWN | This message informs the operator that the inverter has been |
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| switched OFF and that the load has been transferred ot Bypass due |
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| to an Inverter over temperature. |
6. | OVERLOAD PRESENT | The inverter overload has an inverse load/ time characteristic – i.e. |
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| it will accept 125% overload for 10 minutes and 150% overload for |
60 seconds. If this characteristic is exceeded the load transfers to the bypass supply, the inverter stops and the overload alarm annunciates. The [OVERLOAD PRESENT] alarm will annunciate as soon as the load exceeds 100% of the UPS rating, and the load will transfer to Bypass some time later, depending on the degree of
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