GE VH UL series User Manual

Critical PowerModifications reserved Page 16/25GE_UPS_OPM_VHU_0K7_3K0_XUS_V011.docx Operating Manual VH700 UL, VH1000 UL, VH1500 UL, VH2000 UL & VH3000 UL4.2 START-UP4.2.1 Start-up, mains availableVia front panel:press keypad 'I' (1, fig. 4.1) briefly; LED ‘operation’ (already slowly blinking) will at first blink faster and after a fewseconds it will illuminate continuously, indicating that the unit has started up.Via UPS monitoring software:startup after delay, see 4.4.12 for more information. The equipment connected to the UPS can now be switched on.The UPS will not start-up if "Phase Neutral reversal" indication is present (see section 4.4.13).4.2.2 Start-up, mains not availableIf the mains input is absent (power cord not connected, or mains failure):Press keypad 'I' until the buzzer sounds. The LEDs ‘operation’ and ‘on battery’ will illuminate. The UPS operates on battery: itdischarges the batteries. See 4.4.5 for further details about this operating mode.4.3 USE: NORMAL OPERATION4.3.1 Normal operation conditions the mains supply is present, the UPS is on, the load does not exceed the capacity of the UPS and the operating temperature is below alarm level4.3.2 No-load shutdownIf this function is activated, the UPS will switch off during a mains failure when the load is less than 5% of the maximum load.In this way unnecessary discharging of the batteries is avoided. The unit will automatically turn on again when mains poweris restored. The default setting of the no-load shutdown function is: disabled. The setting can be changed using the UPSmonitoring software. For more information please refer to the manual that came with the software.If the no-load shutdown function is activated and the load is smaller than the 5% threshold, the ‘25%’ load LED will blink towarn you that the unit will switch off during a mains failure.4.3.3 Output frequencyAt power up default enabled "Auto" frequency detection updates output frequency setting by comparing it with inputfrequency. Only stable 50 or 60 Hz frequencies are valid, otherwise previous setting is kept (60 Hz at first start up). Settingoutput frequency to 50 or 60 Hz with the UPS monitoring software disables the "Auto" frequency detection.NOTEThe unit can be used as a frequency converter: the input frequency range is 45-66Hz, the outputfrequency is selectable 50/60Hz. If the unit is used as a frequency converter, the bypass function is nolonger available. As a result an audible alarm will be generated continuously (see 4.4.7). To avoid this,we advise to disable the bypass.WARNING!Changing of the output frequency can cause severe damage of equipment connected to theappliance outputs of the UPS: Be sure that the new frequency is suitable for the connected equipment!Please refer to section 4.5 to set/check your output frequency.4.3.4 Switching offVia operating panel:Press keypad ‘0’ (2, fig. 4.1) for 1 second. If the UPS is switched off the output will always be absent for a few secondsto ensure that the connected equipment is able to reboot.Using UPS monitoring software:Shutdown after delay.If electric isolation is required, unplug the power cord from the wall outlet.