Bypass SCR Short-Circuit Detection, Scrst R | Tripp Lite SU60KX

2 Theory of Operation (continued)

2.8 Bypass SCR Short-Circuit Detection

Located at NH-SYS-FB board (Circuit for Bypass Back-Feed Detect)

				RFB1	BKFD_R
		CTFB1			BKFD_R
	R	CTFB1		RFB2	QFB1
					QFB1

	CFA22		SCCT_R+	RFB7	DFB1
			CFB18	RFB7
	S		CTFB2	RFB3	BKFD_S
	S			RFB3	BKFD_S
				RFB4	QFB2
				RFB4
	CFA18		SCCT_S+
	CNFB13		CFB19	RFB8	DFB2
	1	BKFD_R	CFB19	RFB8
	2	BKFD_S
	3	BKFD_T
	4
	T		CTFB3	RFB5	BKFD T
	T			RFB5	BKFD T
				RFB6	QFB3
				RFB6
	CFA12		SCCT T+
			CFB20	RFB9	DFB3
	N		CFB20	RFB9

Located at NH-SYS-P board (Auxiliary Power for System, Detect Circuit for Voltage and Current)

	+12VS
	RP34	RP33		CP63
	RP34	RP33	-12VS	G1
			-12VS	G1
			11	UP18A
			2	UP18A
	BKFD_R		3	1
	BKFD_R		3

		4	CP64
			CP64
	CP62	+12VS	G1
+12VS		RP86
+12VS
RP88	RP87	-12VS	CP84
		-12VS	CP84

		11	G1
		11	UP20A
BKFD_S		2	UP20A
BKFD_S			1
		3	1
		3
		4
	CP67	+12VS	CP85 G1
		RP98	CP85 G1
+12VS
RP104	RP103	-12VS	CP74
		11	G1
		11	UP17A
BKFD_T		2	UP17A
BKFD_T			1
		3	1
		3
		4
	CP70	+12VS
		RP117	CP75 G1
			CP75 G1

SCRST R

DP13	RP35	QP13
	RP35

RP38	CP65	RP37
	G1
		SCRST_S
DP15	RP89	QP15
	RP89

RP93	CP68	RP92
	G1
		SCRST_T
DP46	RP105	QP17
	RP105

RP112	CP71	RP111
	G1

Located at NH-SYS-M board (System MCU and Control Circuit)

5VS

RM48

RM52	RM56
	5VS

RM57	RM65
	5VS

RM66

SCRST_R

				STShort_R	SCRST_S
CM26	(5)

			STShort_S	SCRST_T
CM29	(129)

STShort_T

CM33 (128)

G1

G1

G1

(a)During backup mode, bypass 3 SCRs should be off and zero current should be running through CTFB1, CTFB2 and CTFB3. If current is running through CTFB1, CTFB2 or CTFB3, then STShort_R (5), STShort_S (129) or STShort_T (128) will be low. The UPS will turn off its inverter to prevent back-feed voltage.

56

Image 38

Tripp Lite SU60KX manual Bypass SCR Short-Circuit Detection, Scrst R

Contents

Th Street, Chicago, IL 60609 USA Table of Contents KX Models Basic OperationTechnical Speciﬁcations KTV Models SU40K SU60K SU60KTV SU80KTV SU80K Model Model Capacity SU80K 80kVA/64kW Control Panel Features FeaturesAdvanced Features Front and Rear Panel Features 3a SU40KX front 3b SU40KX rear 3c SU40K front 3d SU40K rear 3e SU80K front 3f SU80K rear System Layout Internal Battery LayoutOperating Principles Opening and Closing the Unit Power Module Layout3a Power Module Block Diagram Auto Bypass Mode Single UPS Online Normal Mode Single UPSBattery Backup Mode Single UPS Manual Bypass Mode Single UPS Auto Bypass Mode Parallel UPS Online Mode Parallel UPSBattery Backup Mode Parallel UPS Manual Bypass Mode Parallel UPS Hot Standby Mode Parallel UPS Preliminary Checklist Single UPS Control Panel and Breaker DiagramsNormal LED Battery LED Bypass LED Fault LED Standard Start-Up Procedure Single UPS Battery Start-Up Procedure Single UPS Manual Bypass Procedure Single UPS Shutdown Procedure Single UPS Preliminary Checklist Parallel UPS Start-Up Procedure Parallel UPS Shutdown Procedure Parallel UPS Manual Bypass Procedure Parallel UPS Switching from Manual Bypass to Normal Mode Parallel UPS Printed Circuit Boards PCB SU80KX SU60KX SU40KX SU80KTV SU20KX PCB Location System F3 FB M LA, LB, LC, LD Models LA, LB, LC LA, LB, LC, LD F1BYP F1MAIN F2BYP F2MAIN LCD PCB Location Power Module PCB Board Name Description 1c SU40KX Block Diagram Block and Wiring Diagrams1a SU20KX Block Diagram KX Models Theory of Operation DC Auxiliary Power CircuitAuxiliary Power Failure Detection Output Current Detection W18 Input Voltage Detection Located at NH-SYS-M board System MCU and Control Circuit Output Voltage Detection Located at NH-SYS-M board System MCU and Control Circuit Battery Voltage Detection UP10B Bypass SCR Short-Circuit Detection Scrst R Bypass SCR Driver TSA1 Watchdog for System MCU LCD Panel Control Circuit To LCD Fan Control Circuit Located on NH-SYS-M board System MCU and Control Circuit Bypass SCR Temperature Detection Communication Circuit for RS232 RS232 Port Communication Circuit for Slots Communication Circuit for Output Dry Contact Output DRY Contact Communication Circuit for Input Dry Contact and Repo Input DRY Contact External Battery Cabinet Temperature Detection EXTBTEMP1 Detection Circuit for Manual Bypass Switch Detection Circuit for Output Breaker Control Circuit for Power Module Centralok To PM1 to PM2 CM93 CM106 CM109 Control Circuit for External Parallel Theory of Operation 01 RS232 Port Emergency Power Off EPOCommunication 02a Front Control Panel 02c Remote Emergency Power Off Repo02b Setting Eeprom on the NH-M Board Polling and Updating Eeprom Calibrating Eeprom Gain Setting Output Dry Contact Status Upgrading Firmware for the System Board Output Manual Bypass Main Input N C S T G R G I N G R a D E Communication Upgrading Firmware for the Power Module PM1 U P S T G R G I N Link the UPS to a PC via the RS232 port Communication Communication Communication T I N G L O W E D Downloading the Event Log Front View of SU20KX and SU40KX Internal BatteryBattery Strings Installing and Removing Internal Batteries Terminals Damage the UPS system and create a serious risk of personal Battery compartment. Warning Observe proper polarity byConnecting negative to negative black to black and positive Injury and property damage Battery Cabinet 2a BP480V26B 2b BP480V40C Internal Battery 2d W1 and W2 Cables 2e Connection between UPS and Battery Cabinet2f Wiring between UPS and Battery Cabinet 1a Warning Message List TroubleshootingAlarm Messages 1b Power Module Warning Message List Condition Troubleshooting Flow Charts Main VOLT/FREQ NOK Main Sequence NOK Bypass VOLT/FREQ NOK Bypass Static Switch Over Temperature Bypass Sequence NOK Bypass Static Switch Fault Bypass Static Switch Overload Same fault message? Replace the power module UPS Internal Comm Abnormal 10a Battery Test FailBattery Over Charge Battery BAD 11a 11b Bypass FAN Failure 12a 12b 12c Transformer Overheat 13a 13b PS Output Volt NOK 14a 14b PS EXT Parallel Comm Abnormal 15a 15b Parallel Failure 16a 16b Redundancy Loss 17a Power Module Failure Power Module Identify 115 116 Power Module Replacement AC Input DC Input Output 119 120 UPS Procedure Preventive MaintenanceSafety Overview Suggested tools and supplies Internal Battery Procedure Software Tools Appendix a Service Equipment and ToolsRecommended Equipment and Tools Multi-Meter Oscilloscope Table B.1 Appendix B Torque TableKX Models Fig B.a Table B.3 ModelsTable B.2 Fig B.b Fig B.c Fig B.d KTV ModelsTable B.4 NH-SYS-R Board Appendix C PCB and Test PointNH-SYS-P Board