valutazioni - 3, GPA: 4.3
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If no indicators light and the UPS is plugged into a working outlet, the line voltage is very low perhaps resulting from an overloaded branch circuit, a misadjusted service pole transformer, or intentional service brownout. The UPS compensates for this problem by using SmartBoost to increase the supplied load voltage. If all five indicators light, the line voltage is very high and should be checked by a qualified electrician. 5.0 Operatio. 5.4 Audible alarms The UPS features an audible alarm that beeps to indicate certain conditions (see Secs. 5.4.1–5.4.4). 5.4.1 On-battery alarm The UPS emits four short beeps every 30 seconds when the UPS is operating on battery power. You may silence this alarm by pressing the alarm disable button (see Sec. 5.1.9). The on-battery alarm is reset when on-line operation is resumed. 5.4.2 Low battery The UPS beeps steadily to indicate that less than 2 minutes of power remains before shutdown from battery exhaustion (or 5 minutes; see Sec. 5.5.4). 5.4.3 Replace battery The UPS emits short beeps for 1 minute if the UPS’s batteries fail the self- test. If the UPS is left operating in this condition, the UPS emits short beeps once every 5 hours until a successful battery test is completed. 5.4.4 Overload The UPS emits a loud, sustained tone when overloaded. When the load exceeds the UPS’s rating during on-line operation, the alarm sounds until the overload is removed. If the overload occurs during on-battery operation, the alarm sounds until the UPS Enable switch on the rear panel is turned off. 5.0 Operatio. 0 f) I ) O"4.p.©.F..amV. 5.5 Option switches The UPS has a set of four DIP switches on the rear panel which allow you to configure several options (see Secs. 5.5.1–5.5.4). 4 3 2 1 .^p§. Note: You can set option switches at any time, and the effect is immediate. Note: If all of the option switches are set to the on position, the option switches are disabled. However, the functions controlled by the option switches are still available using UPS monitoring software (see Sec. 5.6.4). 5.5.1 Option Switch 1 The UPS contains utility fault detection circuitry that is extremely sensitive to line voltage distortions including spikes, notches, sudden dips, and swells. The UPS is factory-set to react to such line voltage distortions by immediately transferring the load to on-battery operation, affording maximum protection for all load types. Where power quality is poor because of local cyclic heavy load-switching, or the use of inexpensive fuel generators, the UPS may frequently transfer to on-battery. If the UPS is powering loads that operate normally under such conditions, battery capacity may be spent unnecessarily. Setting Option Switch 1 to the on ( I ) position desensitizes the UPS to rapid low-amplitude line-voltage fluctuations, and increases the UPS’s upper transfer voltage by 3%, for a total of 13% above the nominal input voltage. This helps maintain maximum battery capacity for major utility failures. 5.0 Operatio. 5.5.2 Option Switch 2 Option Switch 2 functions differently for different versions of the UPS. n 100 Vac version No function; not used. n 120 Vac version The UPS’s factory-set input voltage limits for on-line and SmartBoost operation are centered on the nominal input voltage of 120 Vac (see also Sec. 9.1). When Option Switch 2 is set to the on ( I ) position, the upper and lower transfer voltages are lowered by 4% and centered on a nominal input of 115 Vac. This is useful where nominal input voltage is 110 to 115 Vac. n 220/230/240 Vac version The UPS’s factory-set on-battery output voltage and input voltage limits for on-line and SmartBoost operation are designed for use in regions where the nominal line voltage is 220 to 230 Vac. When Option Switch 2 is set to the on ( I ) position, the upper and lower transfer voltages are raised by 4% and centered on a nominal input of 240 Vac. In addition, the on-battery output voltage is increased to 240 Vac. 5.5.3 Option Switch 3 When Option Switch 3 is set to the on ( I ) position, the UPS’s audible alarm is disabled for the first 30 seconds of on-battery operation. This function is useful where brief power interruptions are frequent and cause the alarm to become annoying. 5.5.4 Option Switch 4 When Option Switch 4 is set to the on ( I ) position, the UPS’s low-battery alarm interval is extended from 2 minutes (factory setting) to 5 minutes. This function is useful if the UPS is protecting a computer system that requires more than 2 minutes warning to perform a graceful shutdown. 5.0 Operatio. 5.6 Extended capabilities Sections 5.6.1 through 5.6.4 briefly describe the UPS’s extended capabilities— advanced functions accessed using a computer running optional PowerDoctor or PowerChute plus UPS monitoring software. Refer to the monitoring software documentation for more information on these functions. Note: The extended capabilities of the UPS and operation of UPS monitoring software may be subject to change without notice. 5....