Mitsubishi 2033D SERIES technical manual Maintenance bypass set-up procedures

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MITSUBISHI

2033D SERIES UPS

Page Number:

ELECTRIC

OWNERS / TECHNICAL MANUAL

3-13

3.5Maintenance bypass set-up procedures

CAUTION: 1. The following instructions are for single operation ONLY.

2.To avoid parallel operation between a bypass source of one module and an inverter source of another module, which may result large cross current between the two modules, DO NOT OPERATE THE MAINTENANCE

BYPASS SWITCH UNDER PARALLEL OPERATION (Must be kept in NORMAL position).

A)Transfer of load from inverter to maintenance bypass

1.Stop the inverter by pressing the START/STOP key on the LCD’s Main Menu (see Figure 2.3). Simultaneously press the two (2) STOP keys per the instructions. (Note : inverter STOP function inhibited if bypass and inverter are out of sync.)

2.Confirm via the flow diagram on the LCD that the load is fed from the UPS’ static bypass line. Also confirm that the “BYP.OP.” LED is on (No.3 LED on Figure 2.1)

3.After confirming Step2, rotate MBS (52CS) clockwise to the “TRANSFER” position (see figure 1.4 for the location of 52CS). The MBP Lamp (No.7 Lamp on Figure 2.1) will be illuminated. (Do not rotate MBS (52CS) if the load is NOT fed by bypass source).

4.After 3 seconds, rotate 52CS clockwise to the “BYPASS” position.

5.UPS can now be powered down.

6.Transfer complete. Load is fed from the external source (Utility or generator).

B)Transfer of load from maintenance bypass to inverter

1.Confirm that the Static Bypass line is on and energized.

2.Rotate 52CS counterclockwise from the “BYPASS” position to the “TRANSFER” position, wait 5 seconds.

3.On the UPS, confirm the “BYP.OP.” LED is on. If not, press the “STOP” button.

4.Rotate 52CS counterclockwise to the “NORMAL” position.

5.Close the external input breaker. Confirm that the converter operates and DC contactor 72B closes.

6.Press “START” button on the LCD panel to transfer the load to inverter source. The “INV.OP.” LED will be illuminated.

7.Transfer complete. Load now powered by the inverter.

MITSUBISHI ELECTRIC 2033D SERIES UPS

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Contents ALN-H0963 Preface Table of Contents UPS Module Information List of TablesList of Figures How to use this Manual Introduction Important Safety Instructions Retain These InstructionsCapacity kVA General Mitsubishi 2033D Series UPS Normal Operation OverviewInternal Static Bypass Line Single Line Diagram Battery Operation Inverter supply at battery operationPCB External Contact Signal Terminal IOAU-05 Mitsubishi 2033D Series UPS Specifications Static Bypass Input AC InputRating of Contactors and Fuses 540V 48A Operator Controls and IndicatorsEPO button Emergency Power Off button Battery operation Battery OP. yellowLED Display Load on inverter Load on Inverter green Load on bypass Load on Bypass greenLiquid Crystal Display MenusStart/Stop screen Figure Measurement Menu Figure Start/Stop screenSetup Menu Figure 11 Main screen Input Power Failure13 Main screen Fault indication Fault Indication FigureTN1 External Signal Terminal BlockRemote EPO TN216 Control Wiring for External Contacts Output Contacts for external alarm annunciationTerminals 37 to 38, 39 to 40 Total Alarm contact OUT9 Terminals 33 to 34, 35 to 36 Minor Fault contact OUT8Input Contacts for remote access of UPS Terminals 3 to 4 Remote Inverter Stop input terminal IN2Terminals 7 to 8 Power Demand Command contact input IN4 Terminals 5 to 6 Battery Temp. High contact input IN3Terminals 11 to 12 Asynchronous contact input IN6 Terminals 13 to 14 Charger IL. contact input IN7Pin Not used External communication connectorMitsubishi Electric 2033D Series UPS Mitsubishi 2033D Series UPSElectric Owners / Technical Manual BatteryProcedure for Cable Connections External Battery SupplyMitsubishi 2033D Series UPS Recommended cable size and torque requirements Crimp Type Compression Lug AUPS Terminal Designation 30kVA UPS BN,BP BN BP AC Bypass Input UPS-1 UPS-2 IOAU-05 TN2 IFAU-01Critical Load Cabinet Operating Procedures UPS Start-up Procedure UPS Shutdown ProcedureEPO Emergency Power Off Procedure Maintenance bypass set-up procedures Transfer of load from inverter to maintenance bypassTransfer of load from maintenance bypass to inverter Electric Owners / Technical Manual Response to UPS Failure UPS FaultUPS Component Parts Parts ReplacementContact Mitsubishi Electric Automation, Inc. at Fault CodesMitsubishi Code ListINV. or Conv Inverter Overload DC circuit failure Mitsubishi Electric Automation Inc 847