Tripp Lite UPS Maintenance Bypass Procedure and Troubleshooting Guide

	8 – Start-Up, Shutdown and Bypass (continued)							1
								1
	8-5 Manual Bypass Procedure (Single UPS—SUS) (continued)
•	Turn OFF the MAIN INPUT circuit breaker .							2
• Wait until the Power Module fans turn OFF (this may take a								2

	minute or two), then turn OFF the BATTERY BREAKER. Note:				6	5	7	3
	The external battery cabinets will have the BATTERY BREAKER				Q4	Q3	Q2	Q1
	behind the front door/panel or elsewhere.
								3
•	Turn ON the MANUAL BYPASS circuit breaker		. The LCD		Output	Manual	Bypass	Main
	will display “Load Unprotected – On Manual Bypass” and you will				Output	Manual	Bypass	Main
				3-8		Bypass	Input	Input
	hear an audible alarm.			3-8
	hear an audible alarm.
•	Turn OFF the OUTPUT circuit breaker .							4
•	Turn OFF the BYPASS INPUT circuit breaker		. The unit’s LCD will go blank after a few seconds.					4
•	Turn OFF the BYPASS INPUT circuit breaker		. The unit’s LCD will go blank after a few seconds.
• The critical load is now supported by unconditioned utility power in manual bypass mode. In this mode, only the manual bypass path
	(including manual bypass breaker	), the load terminals of the output breaker			] and the terminal block contain hazardous voltage,

allowing qualified service personnel to perform maintenance or repair.	5

Note: Use of an external 3-breaker maintenance bypass panel is recommended if the connected equipment is to be powered during complete de-energized maintenance or repair/service procedures on the UPS system.

To transfer the critical load to NORMAL mode from Manual Bypass mode:

1.Confirm the UPS is in MANUAL BYPASS (the MANUAL BYPASS circuit breaker Q3 is ON; the OUTPUT Q4 , BYPASS INPUT Q2 and MAIN INPUT Q1 circuit breakers are OFF).

2.Turn ON the BATTERY BREAKER. For the external battery cabinets, the BATTERY BREAKER will be behind the front door/ panel or elsewhere.

3.Turn ON the BYPASS INPUT circuit breaker Q2 (the amber Bypass LED should come on and the LCD will display “Load Unprotected-On Manual Bypass).

4.Confirm the amber BYPASS LED is ON. Do not proceed if it is not ON.

5.Turn ON the OUTPUT circuit breaker Q4 .

6.Turn OFF the MANUAL BYPASS circuit breaker Q3 . The LCD will display “Load Unprotected-On Auto Bypass”.

7.Turn ON the MAIN INPUT circuit breaker Q1 . The Power Module fans will turn ON.

8.Press and hold the green ON button until the UPS beeps, then release the button. The UPS will perform a self-test diagnostic and the LCD will display “Self Diagnosis”. After the UPS self-test is completed, the UPS will transfer to NORMAL mode (green LED ON and LCD displays “Load Protected-On Line Mode”).

9.Confirm there are no active alarms present (“!” on the display and audible beeping). If an alarm is present, press the UP or DOWN arrows to display the active alarm. Correct the action as required.

				6
Q4	Q3	Q2	Q1
				7
Output	Manual	Bypass	Main
1	Bypass	Input	Input
1
Q2			Q4	8
Q2			Q4

		9
3	5
	Q1	10
Q3		11
6	7

10Scroll through the Measure Menu and confirm all input and output power readings are within the recommended specifications.

11If any problems are noted, contact your technical support personnel for further assistance.

12The critical load is now supported by conditioned battery back-up power.

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12-212-93-3141.indb 23	12/28/2012 11:17:34 AM

SU120KX2 specifications

The Tripp Lite SU120KX2 is an advanced uninterruptible power supply (UPS) that provides reliable backup power and surge protection for critical devices. Engineered for small and medium-sized businesses, this UPS is ideal for safeguarding sensitive electronics such as servers, network devices, and telecommunications equipment.

One of the standout features of the SU120KX2 is its impressive 1200VA power capacity. This allows it to deliver significant run time during power outages, ensuring that your equipment remains operational until power is restored or until you can safely shut down your systems. With a pure sine wave output, this UPS simulates utility power, providing stable voltage and frequency to connected devices. This is particularly important for equipment that is sensitive to power fluctuations, as it helps to maintain optimal performance and longevity.

The SU120KX2 is equipped with multiple battery and surge protected outlets, providing flexibility for connecting various devices. It includes USB and serial connectivity options for easy communication with connected equipment, enabling monitoring of battery status and power conditions. An LCD screen provides real-time information on battery level, load capacity, and input/output voltage, ensuring users are informed about the status of their power supply.

Another notable feature is the built-in automatic voltage regulation (AVR). This technology helps to stabilize input voltage levels, correcting minor fluctuations without switching to the battery, thereby extending the life of the battery while ensuring your devices receive consistent and clean power. Furthermore, the SU120KX2 includes advanced battery management features that optimize battery performance and provide notifications for battery replacement when necessary.

For added convenience, the Tripp Lite SU120KX2 offers hot-swappable battery capabilities, allowing users to replace batteries without shutting down connected devices. This ensures that your critical operations are not interrupted, making it an ideal choice for businesses that cannot afford downtime.

Overall, the Tripp Lite SU120KX2 combines robust performance with reliable protection, making it a perfect solution for businesses looking to secure their electronic infrastructure against power disturbances. With its manageable size, advanced features, and user-friendly interface, the SU120KX2 stands out as a dependable UPS that meets the needs of various applications while ensuring the integrity and availability of your critical systems.

Tripp Lite Understanding UPS Beeping and Maintenance Bypass Procedures

Models: SU120KX2

8 – Start-Up, Shutdown and Bypass (continued)

8-5 Manual Bypass Procedure (Single UPS—SUS) (continued)

Turn ON the MANUAL BYPASS circuit breaker

. The LCD

SU120KX2 specifications