Mitsubishi Electric 9900B Series Owner Technical Manual
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Mitsubishi Electric 9900B Series Owner Technical Manual

Uninterruptible power supply system
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UNINTERRUPTIBLE POWER SUPPLY SYSTEM
MODEL
9900B SERIES
OWNER'S / TECHNICAL MANUAL
(Inclusive Parallel Operation System Application)
Table of Contents
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Summary of Contents for Mitsubishi Electric 9900B Series

  • Page 1 UNINTERRUPTIBLE POWER SUPPLY SYSTEM MODEL 9900B SERIES OWNER’S / TECHNICAL MANUAL (Inclusive Parallel Operation System Application)
  • Page 2 Preface Revision 4 06/09/2020 U-ENM00030...

  • Page 3: Table Of Contents

    4.0 RESPONSE TO UPS FAILURE ..............4-1 5.0 PARTS REPLACEMENT ................5-1 6.0 FAULT CODES ..................6-1 7.0 WARRANTY & OUT OF WARRANTY SERVICE ........7-1 8.0 MAINTENANCE CONTRACTS ..............8-1 8.1 SERVICE OFFERINGS ................8-1 8.2 PACKAGES ....................8-1 MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 4: List Of Tables

    Maximum Permitted Fault Current ..........3-2 Table 3.4 Recommended Cable Sizes ............3-5 Table 3.5 Recommended Hardware ............. 3-5 Table 3.6 Crimp Type Compression Lug ............3-6 Table 6.1 Fault Code List ................6-2 Table 8.1 Typical Offerings ................8-1 MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 5 Figure 3.5(a) Diagram of Power Wire & Control Wire Connect (Parallel Connection 2x to 4x) ....................3-13 Figure 3.5(b) Diagram of Power Wire & Control Wire Connect (Parallel Connection 5x to 8x) ....................3-14 Figure 3.6 LCD Screen (MMS Operation) ..............3-18 MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 6: How To Use This Manual

    UPS operation, load status and display status. Such information is essential if Mitsubishi field service group assistance and correspondence is required. Safety Recommendations: If any problems are encountered while following this manual, Mitsubishi field service group assistance and correspondence is recommended. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 7: Introduction

    Please read this manual carefully and retain it for future reference. IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for the 9900B SERIES Uninterruptible Power Supply System that should be followed during installation and maintenance of the UPS and batteries. WARNING 1 Lethal voltages exist within the equipment during operation.

  • Page 8: Safety Precaution

    If the UPS System is to be applied to support equipment that could affect human safety, the following steps must be adhered to: 1. Consult with Mitsubishi Electric Power Products Inc. UPS Division at 1-800-887-7830. 2. Special consideration of the overall backup power system configuration is required so that the Mitsubishi UPS System is not the sole support required for operation, maintenance and management of power availability.

  • Page 9: Table 1.1 Ups Installation And Operational Environment

    Hydrogen chloride (HCl) <0.0066 PPM <0.0066 PPM Hydrogen fluoride (HF) <0.001 PPM <0.005 PPM Ammonia (NH <1 PPM <5 PPM Ozone (O ) or other <0.002 PPM <0.005 PPM oxidants Nitrogen oxides (NO <0.05 PPM <0.1 PPM MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 10 Note 2: Mean Value is defined as the average, long-term value Note 3: Maximum Value is defined as the maximum value occurring over a period of time of not more than 30 minutes per day MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 11: Table 1.2 Rating Of Bypass Input Circuit Breaker

    NOTE: The DC input overcurrent protection (Battery disconnect breaker) hereinafter will be referred as “CB2.” This UPS functions with lead acid batteries. If a ▲ is seen, review the supplemental materials for more information about the stored energy system used. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 12: General

    UPS. The UPS is simple to startup, operate and maintain. The 9900B SERIES UPS is available in 300, 500 and 750kVA. These specifications are shown in Section 1.5. The principles of operation described herein are applicable to all models.

  • Page 13: Definitions

    UPS for supplying the critical load. BATTERY - The rechargeable battery strings which supply DC power to the inverter to maintain continuous AC power to the load during AC input power failure conditions. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 14: Operation Overview

    The power drawn by the critical load is equally shared between all UPS units whenever the system is in Parallel Operation (refer to Figure 3.4 that shows a sample of the Parallel Operation System Configuration). MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 15: Figure 1.2 Single Line Diagram-Bypass Operation: Load Fed Through Static Bypass Line

    UPS module. Each UPS internal static bypass line will equally share the power supplied to the critical load whenever the system is in Parallel Operation. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 16: Figure 1.3 Single Line Diagram-Emergency Operation

    A fully charged battery will provide power for the specified time at the rated load, or longer at a reduced load. (s)*: In the case of the Parallel Operation MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 17 The power drawn by the load is equally shared between all UPS units regardless of the presence or absence of a UPS that is (are) in battery operation, or whenever the system is in Parallel Operation. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 18: Figure 1.4(A) Ups Parts Location (750Kva)

    1 . LCD Touch Panel Left Right Monitor Display Door Door Cable Entry Section 2) Backside of left door 1. LCD Touch Panel Monitor Display 2. Display PCB DPAU-81 6. External Communication 4. Main PCB Connector UPGR-M MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 19 (IOAU-09) AC Capacitors AC Capacitors Converter Unit Inverter Unit Chopper Unit *Items 9 and 10 (AC input, AC output, DC input terminal, and Grounding Bar) are not shown in Figure 1.4 (refer to Figure 3.2). MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 20: Figure 1.4(B) Ups Parts Location (500Kva)

    Connector 2. Display PCB DPAU-81 Cable Entry Section 4. Main PCB UPGR-M CPMC 3) UPS module – Front View CPMS 3. External I/F PCB (IOAU-09) AC Capacitor AC Capacitor Converter Unit Inverter Unit Chopper Unit MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 21: Figure 1.4(C) Ups Parts Location (300Kva)

    2. Display PCB DPAU-81 Cable Entry 4. Main PCB Section UPGR-M 6. External Communication Connector CPMC 3) UPS module – Front View CPMS 3. External I/F PCB (IOAU-09) AC Capacitor Converter Unit Chopper Unit Inverter Unit MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 22: Figure 1.5 Display Pcb Dpau-81

    Figure 1.7 Parallel I/F PCB IFAU-09 CN99 CN98 CN97 CN96 TLIN TLOUT COUT CN954 CN953 CN952 CN951 CN944 CN943 CN942 CN941 TLBIN TLAIN TLBOUT TLAOUT CB2IN CB1IN CA2IN CA1IN CB2OUT CB1OUT CA2OUT CA1OUT 8. Parallel I/F PCB IFAU-09 MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 23: Figure 1.8 Main Pcb Upgr-M

    Page Number: 9900B SERIES UPS MITSUBISHI 1-17 ELECTRIC OWNERS / TECHNICAL MANUAL Figure 1.8 MAIN PCB UPGR-M 15. SW3 52L S/W switch 14. SW2 11. SW1 BOOT switch RESET switch MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 24 Parallel I/F PCB IFAU-09 For use in Parallel Operation system application: Option (Figure 1.7): Refer to Figure 3.5 for details. AC input, AC output, DC input terminal Refer to Figure 3.2 for details 10. Grounding Bar (E) MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 25 This switch prohibits turning on the AC output contactor “52C” during test/maintenance in Parallel Operation system application. 16. External contact signal terminal block This terminal block is used to connect contact signal input/output lines to and from external dry contacts. Refer to Figure 2.10 for details. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 26: Specifications

    BOTTOM / TOP 88.4 / 2244 32.7 / 832 80.7 / 2050 3570 / 1619 69.3 / LEFT SIDE BOTTOM / TOP 106.9 / 2714 32.7 / 832 80.7 / 2050 4255/ 1930 98.4 / LEFT SIDE MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 27: Table 1.5 Detail Of Specifications

    Operating altitude: Sea Level to 2250 meter (7400ft) Location Indoor (free from corrosive gases and dust) Paint Color Munsell 5Y7/1 (Beige) *Voltage regulation maintained ▲ For other stored energy systems, refer to the attached supplement. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 28: Table 1.6 Rating Of Contactors, Breakers And Fuses

    250A / 690V 315A / 690V FSU, FSV, FSW (OPTION) Parallel control 3A / 600V FEA, FEB, FEC circuit fuse (optional) * Rating would be changed. ▲ For other stored energy systems, refer to the attached supplement. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 29: Operation Controls And Indicators

    Page Number: MITSUBISHI 9900B SERIES UPS ELECTRIC OWNERS / TECHNICAL MANUAL 2.0 OPERATOR CONTROLS AND INDICATORS The 9900B Series operator controls and indicators are located as follows (exterior door): Figure 2.1 Operation/Display Panel (Front Panel) MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 30: Led Display

    2.2 EPO BUTTON (Emergency Power Off button) (7) When activated, the Emergency Power Off (EPO) function shuts down the UPS module. The critical load will lose power and also shutdown. The EPO function can be performed both locally or remotely. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 31: Liquid Crystal Display

    - Start: When the bypass voltage is abnormal, the LCD asks the operator if an interrupted transfer is acceptable (the load may be lost). - Stop: When the bypass voltage is abnormal, the user cannot transfer from the inverter to bypass line. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 32: Figure 2.3(A) Startup/Shutdown Guidance

    Follow Startup/Shutdown guidance accordingly. MEASUREMENT MENU (Figure 2.4) This screen shows details of measured values, including Input and Output values. During Battery operation, “Remaining battery power” and “Run time” are also displayed. Figure 2.4(a) Input Values MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 33: Figure 2.4(B) Output Values

    (setup is based on battery type▲). ▲ For other stored energy systems, refer to the attached supplement. Figure 2.5(a) Remote/Local Operation Select Figure 2.5(b) Date & Time Adjustment MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 34: Figure 2.6(A) Log Menu

    Press ▲ or ▼ button for page turning. Pressing the BATTERY LOG icon will display “Number of battery operations” and “Summed battery operation time.” Figure 2.6(a) Log Menu Figure 2.6(b) Event Log Figure 2.6(c) Battery Log MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 35: Figure 2.7(A) Main Screen (Battery Operation)

    2.3.3 FAULT INDICATION (Figure 2.8) “MESSAGE” and “SILENCE ALARM” icons will appear on the main menu when a UPS failure condition has occurred. Figure 2.8 Main Screen (Fault Indication) MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 36: Figure 2.9 Message Screen

    5 second intervals. Figure 2.9 Message Screen SILENCE ALARM (Figure 2.9) The circled icon will appear when a failure occurs. The audible alarm announcing the failure can be silenced by pressing this icon. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 37: External Signal Terminal Block

    OUT3: BATTERY OPERATION OUT4: CONVERTER OPERATION OUT5: BATTERY LOW VOLTAGE OUT6: OVERLOAD OUT7: SPARE OUT8: TOTAL ALARM 52C CLOSE *1 Relay contactor (52C close): Normal Closed ▲ For other stored energy systems, refer to the attached supplement. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 38: Figure 2.10(B) External Signal Terminal Block (Nec Class2)

    Load Circuit Switch 52L AX IN1: REMOTE INVERTER START (User supplied dry contact) IN2: REMOTE INVERTER STOP IN3: BATTERY TEMP. HIGH IN4: POWER DEMAND REMOTE EPO ▲ For other stored energy systems, refer to the attached supplement. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 39: Figure 2.11 Control Wiring For External Contacts

    Terminals 15 to 16 "Spare" contact (OUT7) Terminals 17 to 18 "Total Alarm" contact (OUT8) Activated during major fault, minor fault and alarm events. Terminals 19 to 20 "52C Close" contact (OUT9) Activated when the inverter output contactor 52C has closed. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 40: Table 2.1 Selectable Output Contacts

    Table 2.1 Selectable Output Contacts B) Input Contacts (for remote access of UPS) External contacts are provided by the user of the UPS system. The terminal voltage at the UPS is 24Vdc. Provide external dry contacts accordingly. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 41: Figure 2.12 Remote "Start" Contact Connections

    OFF when the contact is open. Terminals 15 to 16 "Remote EPO" contact input Used to perform a remote UPS Emergency Power Off (EPO). The load will be dropped. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 42: Table 2.2 Selectable Input Contacts

    OWNERS / TECHNICAL MANUAL NOTE: The UPS is equipped with a selectable input contact item. The above items are the default settings. Contact MITSUBISHI ELECTRIC POWER PRODUCTS, INC for setup information at 1-800-887-7830. CAUTION: In all cases, a switch having a protective cover is recommended to reduce the possibility of accidental operation.

  • Page 43: External Communications

    Page Number: MITSUBISHI 9900B SERIES UPS 2-15 ELECTRIC OWNERS / TECHNICAL MANUAL EXTERNAL COMMUNICATIONS External communications are provided using Lookups. Refer to the Lookups technical manual U-ENM00017 for details. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 44: Installation And Operation

    25 mm (1 inch) (not required when sidecars are used) Left side 25 mm (1 inch) (not required when sidecars are used) Back side 0.0 mm (0 inch) Top side 600 mm (24 inches) (for air flow) MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 45: Procedure For Cable Connections

    2. X2 (B-phase) to B bus bar in UPS 3. X3 (C-phase) to C bus bar in UPS b) DC Input to UPS Positive cable to BP bus bar in UPS Negative cable to BN bus bar in UPS MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 46 (A, B, C). Refer to Figures 3.1 to 3.2. (3) Connect the external signal terminal block as desired. Refer to section 2.4 and Figure , or less, shielded conductor is recommended. 2.10 for functional description. A 2mm MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 47 (TN1– 5, 6). - Parallel control signal for TLIN, TLOUT, CIN, COUT as shown in Fig. 3.5. b) Power wire connections From UPS AC Output Terminals to Critical Load Cabinet (CLC) (refer to Figure 3.4 and 3.5). MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 48: Table 3.4 Recommended Cable Sizes

    ▲ For other stored energy systems, refer to the attached supplement. Table 3.5 Recommended Hardware Split Flat washer UPS Capacity Bolt size lockwasher Nut size size size 300kVA M12 x 40mm 500kVA M12 x 40mm 750kVA M12 x 40mm MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 49: Table 3.6 Crimp Type Compression Lug

    YA39-LB 1030 750 MCM BURNDY YA39 BLACK ILSCO CRA-750L BLACK NOTE: When using crimp type lugs, the lugs should be crimped to the specifications ………..given in the manufacturer's instructions for both crimp tool and lug. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 50: Figure 3.1 Ups Terminal Designation

    Page Number: MITSUBISHI 9900B SERIES UPS ELECTRIC OWNERS / TECHNICAL MANUAL Figure 3.1 UPS Terminal Designation Terminals Bypass Input Static Transfer Switch Converter /Charger Inverter Terminals Terminals / CHA Input Output Terminals External Battery MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 51: Figure 3.2(A) Diagram Of Input/Output Bus Bars And Terminal Blocks (750Kva)

    DC Input Input BP , BN AC Output A 50 , B 50 , C 50 DC Input Grounding Bar ( not shown ) Output 19 . 7 " ( 500 ) UPS module (750kVA) MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 52: Figure 3.2(B) Diagram Of Input/Output Bus Bars And Terminal Blocks (500Kva)

    A 40 , B 40 , C 40 Bypass DC Input Input BP , BN AC Output A 50 , B 50 , C 50 DC Input Grounding Bar ( not shown ) Output 19.7” (500) UPS module (500kVA) MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 53: Figure 3.2(C) Diagram Of Input/Output Bus Bars And Terminal Blocks (300Kva)

    A 40 , B 40 , C 40 Bypass Input DC Input BP , BN AC Output A 50 , B 50 , C 50 DC Input Grounding Bar not shown Output 19.7” (500) UPS module (300kVA) MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 54 Figure 3.3 Diagram of Power Wire & Control Wire Interconnections Between UPS and Battery User supplied CB2 (DC circuit breaker) External signal terminal IOAU-09 - [TN1] Auxiliary “-” Negative “+” Positive Power terminal User supplied UPS module Wall mounted DC breaker for Battery MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 55 UPS-2 Bypass Bypass input Converter /Charger Inverter 52L 2 AC output AC input Battery UPS-n *1 Bypass Bypass input Converter /Charger 52L n Inverter AC output AC input *1 n : Maximum = 8 Battery MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 56: Figure 3.5(A) Diagram Of Power Wire & Control Wire Connect (Parallel Connection 2X To 4X)

    *3 : DIP switch position should be within Twisted Pair) cable may UPS-(n-1) CN941(CA1OUT) UPS1 and UPSn : ON 100m (330ft). cause malfunction) UPS-(n-1) CN943(CB1OUT) Otherwise : OFF AC OUTPUT UPS-1 UPS-2 UPS-n AC OUTPUT AC OUTPUT AC OUTPUT MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 57: Figure 3.5(B) Diagram Of Power Wire & Control Wire Connect

    UPS-1 to UPS-N UPS1 and UPSn : ON cause malfunction) UPS-(n-1) CN941(CA1OUT) should be within Otherwise : OFF UPS-(n-1) CN942(CA2OUT) 100m (330ft). UPS-(n-1) CN943(CB1OUT) UPS-(n-1) CN944(CB2OUT) AC OUTPUT UPS-1 UPS-2 UPS-n AC OUTPUT AC OUTPUT AC OUTPUT MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 58: Operating Procedures

    NOTE: When "REMOTE OPERATION MODE" is displayed on the LCD panel, the inverter start operation can only be performed remotely. If local inverter start operation is required at the UPS, select "LOCAL ONLY" or “REMOTE & LOCAL” in the OPERATION MENU. MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 59 De-energize all external sources of AC and DC power. Before removing the covers, wait 5 minutes after de-energizing. Check that no voltage is flowing before handling the UPS. Be careful even when the UPS has been de-energized; internal devices may still be hot. MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 60 NOTE: When "REMOTE OPERATION MODE" is displayed on the LCD panel, the inverter start operation can only be performed remotely. If local inverter start operation is required, select "LOCAL ONLY" or “REMOTE & LOCAL” in the OPERATION MENU. MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 61: Figure 3.6 Lcd Screen (Mms Operation)

    Transfer from UPS MMS Inverter Operation to UPS MMS Bypass Operation Transfer MMS Inverter Operation to MMS Bypass Operation from Operation Menu on any UPS LCD as shown in Figure 3.6. Figure 3.6 LCD Screen (MMS Operation) MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 62: Response To Ups Failure

    Take necessary action according to display guidance. Primary Action When faults happen, contact the Authorized Mitsubishi Information to Service Center Electric Service Representatives or call Mitsubishi Electric at 1-800-887-7830. NOTE: The error code indicated on the LCD display panel when a UPS alarms is very important.

  • Page 63: Parts Replacement

    ELECTRIC OWNERS / TECHNICAL MANUAL 5.0 PARTS REPLACEMENT Contact Mitsubishi Electric Power Products, Inc. or its authorized service representatives at 1-800-887-7830 on all issues regarding the replacement of parts. A) Battery Battery lifetime may vary according to the frequency of use and the average ambient operating temperature.

  • Page 64: Fault Codes

    A) Verify and record the occurrence of the alarm. Note details of the alarm message displayed on the LCD display panel. Contact Mitsubishi Electric Power Products, Inc. at 1-800-887-7830. B) If a circuit breaker (MCCB) has tripped, depress the toggle to reset the breaker before closing it again.

  • Page 65: Table 6.1 Fault Code List

    The emergency stop was UA817 STOP activated by the EPO switch or Alarm ACTIVATED an external contact. The UPS cannot transfer to TRANSFER the bypass because the UA821 Alarm PROHIBITION inverter output is not synchronized to the bypass. MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 66 INPUT CIRCUIT Detection of a large variation Intermittent UF059 SERVICE Minor Flicker ABNORMAL of the reference error signal. sound ENGINEER CALL DC voltage surpasses the Continuous UF102 SERVICE Major Lit on OVERVOLTAGE overvoltage level. sound ENGINEER MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 67 CALL UF151 failure is running for Intermittent UF161 (DC VOLT. SERVICE Minor Flicker over 24 hours. sound ABNORMAL) ENGINEER CALL BATTERY Failure detection based on Intermittent UF162 SERVICE Minor Flicker ABNORMAL battery self-check. sound ENGINEER MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 68 ENGINEER CALL INVERTER Detection of inverter output Continuous UF217 SERVICE Major Lit on OVERVOLTAGE phase overvoltage. sound ENGINEER CALL ZERO PHASE Detection of zero-sequence Continuous UF230 SERVICE Major Lit on OVERCURRENT overcurrent. sound ENGINEER MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 69 UF333 SERVICE Major Lit on CIRCUIT ERROR main driver PCB (Phase C) sound ENGINEER CALL UPS CONTROL Cable disconnection in the Continuous UF334 SERVICE Major Lit on CIRCUIT ERROR main driver PCB (Chopper)) sound ENGINEER MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 70 2) "Minor" is defined as a minor failure. The UPS continues to operate normally, but the cause of alarm must be identified. (Note 2) Indicates one of two possible LED illumination patterns - continuously on (lit on) or intermittent (flicker). MITSUBISHI ELECTRIC 9900B SERIES UPS...
  • Page 71 U%4++ ----------------------- Bypass system failure U%8++ ----------------------- Alarm U%+00 - U%+49 --------- Major failure U%+50 - U%+99 --------- Minor failure *) “+” denotes any numeral from 0 to 9 *) “%” denotes either “A” or “F” MITSUBISHI ELECTRIC 9900B SERIES UPS...

  • Page 72: Warranty & Out Of Warranty Service

    For customers purchasing a new Uninterruptible Power Supply (UPS) from a Reseller, the Limited Warranty of your Uninterruptible Power Supply (UPS) was provided to the Reseller at the time of sale. Please contact Mitsubishi Electric Power Products Inc. immediately if formal documentation of the warranty transfer was not provided to you.

  • Page 73: Maintenance Contracts

    1 UPS semi-annual maintenance/year/unit 4 battery maintenance service/year/string Parts and labor Additional options requiring list price quotation through MEPPI service sales at 724-778-3122: Wet cells Multiple Sites Flywheels Lithium ion >4 units Thermographic imaging >3 years MITSUBISHI ELECTRIC 9900B SERIES UPS...

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