Cyber Power CPS1000, Instruction Manual

Table 4.3 : LED  Indication of Saving Mode Selection

LED : Green

Inverter mode

Status

Battery

Load

Saving mode

Status

Battery

Load

Note:   Flash per second.    Light on.  

Light off

5.Protection

5.1 Input Protection

(A) Battery Polarity Protection: If the battery input is connected with reversed polarity, the 

internal fuse would blow out and the inverter should send back to CyberPower for repair.

(B) Battery Under Voltage Protection : When the battery voltage is lower than the preset 

level, the inverter will automatically terminate the output power to protect the batteries 

from over-discharging. In the mean time, the "Bat Low" signal on the front panel will light 

up. Please refer to Table 3.1 for more details about the failure signals.

(C) Battery Over Voltage Protection : When the battery voltage is too high, inverter will 

automatically terminate the output power and the inbuilt buzzer will be activated to inform 

the users. Please refer to Table 3.1 for more detail about the failure signals.

Warning :

Please choose suitable batteries that match the rated input DC voltage of the inverter(refer to 

the SPEC). If the input DC voltage is too low (ex. using 12Vdc battery bank for 24Vdc input 

models), the inverter can't start up properly. If the input DC voltage is too high (ex. using 48Vdc 

battery bank for 24Vdc input models), the inverter will be damaged!

5.2 Output Protection

(A). Inverter fault Indication: When the inverter starts up, the front panel will display failure 

signals if any abnormal situation.(Please refer to Table 3.1) 

(1) Over Temperature Protection:

When the internal temperature is higher than the limit level, the "Over Temperature 

Protection" will be activated. The unit will be automatically turned off and require reboot.

(2) AC Output Abnormal Protection:

When the AC output voltage is too high or too low, the unit will be turned off and 

require reboot.

(3) AC Output Short Circuit Protection: 

When a short circuit situation of output side occurs or the load level increase greatly 

in a short period of time, the unit will be turned off and require reboot.

(4) Battery Voltage Abnormal Protection: 

When the battery voltage is too high or too low, this protection will be activated. The 

inverter will be auto-recover after the battery voltage regains safe level and do not 

require reboot.

(5) Output Overload Protection: 

When output is overloaded between 100%~115%, the inverter can provide power 

for 3 minutes; between 115%~150%, the inverter can provide power for 10 seconds; 

between 150%~200%, the inverter can provide power for 500 millisecond. If the 

overload condition still does not resolve accordingly, the overload protection will be 

activated. Once the overload protection is activated, the unit should be reset to recover.

EN

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