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Operating the UPS

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TOSHIBA 6.0 Operating the UPS 6.1 AC Input Mode (Normal Operation) The following illustration shows circuit power flow when the UPS is operating normally in the AC Input Mode. The converter of the UPS, including a boost chopper circuit, converts the AC input power into DC power. The boost chopper circuit maintains a constant voltage and provides current limiting for charging the batteries. It also supplies a DC voltage of the proper level to the inverter section. The inverter section generates a high quality sine wave output voltage. The batteries are maintained in a constantly charged state when the UPS is in the "Normal Operation Mode." Power Flow Input Power Isolating XFMR MCCB MBS Bypass Converter Inverter Output Power Charger/ Chopper External Batteries Power flow in AC Input Mode 4200FA CT/XT User's Manual 37

Section	Page
TABLE OF CONTENTS	3
1.0 Product Description	15
1.1 Theory of Operation	15
1.2 Application and Use	15
1.3 Power Backup	15
1.4 Power Conditioning	15
2.0 Unpacking/Inspection/Storage/Disposal	16
2.1 Unpacking the new UPS equipment 15/25/30 kVA:	16
2.2 Unpacking the new UPS equipment 50 kVA:	17
2.3 Inspection of the new UPS equipment	17
2.4 Storage of UPS equipment	18
2.5 Disposal	18
3.0 Installation Precautions	19
3.1 Equipment Placement	19
3.2 System Preparation (Pre-Power)	20
3.3 Operating Precautions	20
4.0 UPS Connections	21
4.1 Power Connections	21
4.1.1 Power Connections 15/25/30 kVA with Internal Batteries	21
4.1.2 Power Connections 15/25/30 kVA with Internal Transformer	22
4.1.3 Recommended Wire Size and Torque Requirements	23
4.1.4 Power Connection Cable Routing and Conduit Placement 15/25/30 kVA	24
	25
4.2 Control Circuit and External Battery Interface Connections 15/25/30 kvA	25
	25
4.2.1 Recommended Wire Size and Torque Requirements	25
4.3 Power Connections 50 kVA	26
4.3.1 Recommended Wire Size and Torque Requirements For UPS Input and Output Terminals	27
	27
4.3.2 Power Connection Cable Routing and Conduit Placement 50 kVA	28
4.4 Control Circuit and External Interface Connections 50 kVA	29
4.4.1 Recommended Wire Size and Torque Requirements	29
4.5 Communication Interface	30
4.5.1 Remote Contact	30
4.5.2 RS-232C	31
4.5.3 UPS Shutdown (via RS-232C)	31
5.0 Specifications	32
5.1 4200FA 15 / 25 kVA @ 208 VAC Input/ 208 VAC Output w/Internal Batteries	32
5.2 4200FA 15/25 kVA w/Internal Transformer	33
5.3 4200FA 30 kVA @ 208 VAC Input/ 208 VAC Output w/Internal Batteries	34
5.4 4200FA 30 kVA w/Internal Transformer	35
5.5 4200FA 50kVA @ 208 VAC Input/ 208 VAC Output w/Internal Batteries	36
5.6 4200FA 50kVA w/Internal Transformer	37
6.0 Operating the UPS	38
6.1 AC Input Mode (Normal Operation)	38
6.2 Bypass Mode	39
6.4 Battery Backup Mode	40
6.5 Battery Backup Time and Discharge Process	41
6.6 Battery Low Voltage Tolerances	41
6.7 Battery Recharging	42
6.8 Front Panel Layout (All Units)	43
6.9 EPO (Emergency Power Off) Function	43
6.10 Audible Alarm Functions	44
6.11 LED (Light Emitting Diode) Functions	44
6.11.1 LED (Light Emitting Diode) System Status	45
6.12 LCD (Liquid Crystal Display) Functions	45
6.12.1 Line-1 System Messages	45
6.12.2 Line-2 System Fault Messages	46
6.12.3 Line-3 System Messages	46
6.12.4 Line-4 System Messages	46
6.13 Initial Battery Charge	47
6.14 Start-up Procedure	48
6.15 Shutdown Procedure	49
6.16 Maintenance Bypass Procedure	49
6.17 Keypad Overview	51
6.18 Key Functions	52
6.18.1 MONI	52
6.18.2 IN	52
6.18.3 OUT	52
6.18.4 BATT Key	53
6.18.5 MENU, F1, ENTER, UP, & DOWN Keys	53
6.18.6 BATT TEST Key	53
6.18.7 BUZZ STOP Key	54
6.18.8 RESET Key	54
6.19 Menu Data Screens	55
6.19.1 Settings for Calendar and Clock	55
6.19.2 Adjusting the Buzzer Volume	55
6.19.3 Settings for Display Duration	55
6.19.4 Run Switch Select	56
6.19.5 Serial Com Station Address	56
6.19.6 Output Voltage Adjustment	57
6.19.7 Equalize Charge Mode Select	57
6.19.8 Reset to Default Settings	58
6.20 Overload Operation	58
6.21 Backup History and Fault History	59
7.0 UPS Protection System	61
7.1 System Protection Features	61
7.2 System Protection Functions	61
8.0 Start-up/Scheduled Maintenance/Part Replacement	62
8.1 Start-up	62
8.2 Preventive Maintenance	62
8.3 Parts Replacement	63
9.0 External Dimensions / Shipping Dimensions / Weights	64
9.1 External Dimensions 15/25/30 kVA	64
9.2 External Dimensions 50kVA	65