Operation (continued)
UPS Fault Shutdown Messages
CONDITION | LCD DISPLAY MESSAGES |
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+BUS >450V | + DC BUS HIGH SHUTDOWN |
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Load <100%: +BUS < 320V; Load >100%: +BUS | + DC BUS LOW SHUTDOWN |
<290V |
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- DC BUS HIGH SHUTDOWN | |
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Load <100%: | - DC BUS LOW SHUTDOWN |
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BUS Voltage Over 500 | BUS OVP FAIL SHUTDOWN |
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Output Short | OUTPUT SHORT SHUTDOWN |
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UPS Over Temperature | OVER TEMPERATURE SHUTDOWN |
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Ouput SCR Open Failure | OUTPUT SCR FAIL SHUTDOWN |
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Output Overload | OVERLOAD SHUTDOWN |
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Bypass SCR Short | BYPASS SCR FAIL SHUTDOWN |
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Input SCR Rectifier Failure | RECTIFIER FAIL SHUTDOWN |
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Inverter Output Voltage Failure | INVERTER SHUTDOWN |
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Input Fuse Open | I / P FUSE BROKEN SHUTDOWN |
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Output Fuse Open | O / P FUSE BROKEN SHUTDOWN |
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Parallel ID Lost | PARALLEL FAULT SHUTDOWN |
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On Battery Alarm
When in the On Battery Mode, the UPS power module will beep to inform you that it is using battery power to support connected equipment. If its connected batteries are at more than half capacity, it will beep every two seconds. If its connected batteries are below half capacity, it will beep twice a second. If its connected batteries are nearly depleted, the UPS power module will beep continuously.
To silence the On Battery Alarm, press the “ON/MUTE” button.
Overload Messages
When the UPS detects an output overload, its LCD will switch to the following display:
OVERLOAD!
LOAD = XXX% X.XXKW
The UPS will then begin a countdown. If the UPS is still overloaded at the end of the countdown, the UPS will automatically go to Bypass Mode to protect its inverter. The duration of the countdown varies with the severity of the overload, as follows:
Bypass Messages
| Overload Condition | Countdown Duration | |
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106% - 125% | 1 minute | ||
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126% - 150% | 30 seconds | ||
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>150% | Immediate | ||
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While in Bypass Mode, the UPS monitors its input voltage and passes that input power along to connected equipment. The UPS will not provide battery backup in Bypass Mode.
If the output voltage deviates from an acceptable range (between 15% higher and 20% lower than nominal), the UPS displays the condition on its LCD and stops supplying output power to its load. If power levels return to an acceptable level, the UPS resumes supplying power to the load, and its LCD reports that output voltage was too high or too low at one time, but has returned to nominal.
| BYPASS VOLTAGE |
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| >15% Higher |
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| BYPS OUT OF VOLT |
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| Than Nominal |
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| XXXV / XX.X HZ |
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| >20% Lower |
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| BYPS OUT OF VOLT |
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| Than Nominal |
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| XXXV / XX.X HZ |
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201207113 933070.indb 26 | 9/17/2012 1:20:08 PM |