Operation (continued)
Overload Messages
When the UPS detects an output overload, its LCD will switch to the following display:
OVERLOAD!
LOAD1 = XXX% X.XKW
OVERLOAD!
LOAD2 = XXX% X.XKW
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:
Overload Condition | Countdown Duration |
102% - 125% | 1 minute |
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125% - 150% | 30 seconds |
> 150% | Immediate Bypass |
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Bypass Messages
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.
Bypass Voltage Conditions | LCD Screen Messages |
L1 > 15% Higher | BYPASS AC1 HIGH |
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Than Nominal Voltage | LOAD1 = XXX% X.XKW |
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L2 > 15% Higher |
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BYPASS AC2 HIGH |
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Than Nominal Voltage | LOAD1 = XXX% X.XKW |
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L1 > 20% Lower |
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BYPASS AC1 LOW |
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Than Nominal Voltage | LOAD1 = XXX% X.XKW |
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L2 > 20% Lower |
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BYPASS AC2 LOW |
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Than Nominal Voltage | LOAD1 = XXX% X.XKW |
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L1 Voltage Was Too High, | BYPASS AC1 WAS HI |
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Now Returned to Nominal Voltage | LOAD1 = XXX% X.XKW |
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L2 Voltage Was Too High, | BYPASS AC2 WAS HI |
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Now Returned to Nominal Voltage | LOAD1 = XXX% X.XKW |
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L1 Voltage Was Too Low, | BYPASS AC1 WAS LO |
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Now Returned to Nominal Voltage | LOAD1 = XXX% X.XKW |
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L2 Voltage Was Too Low, | BYPASS AC2 WAS LO |
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Now Returned to Nominal Voltage | LOAD1 = XXX% X.XKW |
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201102170 932611.indd 14 | 3/30/2011 10:22:17 AM |
