Tripp Lite SU40KX, SU80KX, SU20KX owner manual Start-Up Procedure Parallel UPS

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

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9-8 Start-Up Procedure (Parallel UPS)

•1 Connect the parallel configuration cable A to the DB9 parallel configuration port B of each UPS system. Note: Before starting up

the Parallel UPS system, ensure that the “Parallel ID” is different for each UPS and parallel group is set. (See Section 10-5-5for more details.

•2 If the UPS systems have external battery cabinets connected, switch on the external battery cabinet circuit breaker switch A of each battery pack. On the SU20KX or SU40KX, turn ON the battery breaker on the back of the UPS.

9-8 Start-Up Procedure (Parallel UPS) (continued)

•3 Switch on the bypass input circuit breaker switch Q2 of each UPS system. After a brief initialization process, the LCD screen will show “ON AUTO BYPASS” and the “BYPASS” LED will illuminate.

•4 Switch on the main input circuit breaker switch Q1 of each UPS system.

•5 Press the ON button A of one of the UPS systems for 3 seconds (until you hear a beep), then release the button. The inverter will activate and synchronize with the bypass source. Press the ON button for the other UPS system for 3 seconds (until you hear a beep), then release the button. When the inverter of each UPS system is operating normally, they will automatically switch from auto bypass (reserve) mode to online (normal) mode at the same time. The “BYPASS” LED will darken and the “NORMAL” LED will illuminate.

•6 Check the output voltage of each UPS system. The phase deviation

between each UPS system should be less than 5V. If the phase deviation is within the acceptable range, switch on the output circuit breaker switch Q4 of each UPS system. Note: For more information on checking the output voltage of each UPS system, see Section 10-4.

				2
			B
	B	A		3
1
				4
	A
				5
2
				6
		Q2		7
Output	Manual	Bypass	Main
3	Bypass	Input	Input	8
			Q1	9
Output	Manual	Bypass	Main
4	Bypass	Input	Input
				10
			A
				11
5				12
Q4
				13
Output	Manual	Bypass	Main
6	Bypass	Input	Input
				14

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