AEG 2.33 2 user manual Emergency power off EPO operation, Transfer to maintenance bypass

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5.3. Emergency power off (EPO) operation

Emergency Power Off (EPO) is equivalent to a complete unit system halt:

All UPS converters are turned off (rectifier and inverter off).

No output voltage is supplied to the loads.

See table below for operation:

E.P.O. function

Terminals (X50).

 

Normally closed circuit by means of the provided cable

 

bridge (it allows an external switch (EPO)).

 

 

Activation

Remote button or switch has to be opened permanently

(perform System

in terminal strip (X50).

Halt)

 

Return to

The equipment has to be shut down and de-energized

normal-mode.

completely (turn off all switches), wait until DC bus is

 

discharged (all LEDs and LCD have to be turned off).

 

The equipment has to be started up according to

 

section 5.1.2. “Start-up procedure”.

 

 

Table 3:  Emergency Power Off (EPO) operation

Note: In parallel mode it is sufficient , when the emergency shutdown is activated for one UPS.

5.4. Bypass manual switch (Maintenance)

5.4.1. Principle of operation

The integrated manual bypass of the UPS is a very useful element, but unwarranted use can have irreversible consequences both for the UPS and for the loads connected to its output. It is therefore important to handle it as described in the following paragraphs.

5.4.2. Transfer to maintenance bypass

Note: The bypass switch connects the load at the electrical output before the input switch (Q1a) and after the output switch (Q2). In practice, the input switch is combined directly with the output terminals. If you switch off all of the other switches after switching on the bypass switch, the UPS is internally without power (neutral conductors are not connected.) For equipment fitted with internal

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Contents Protect 2.33 Contents Operation Maintenance, warranty and service Using this manual IntroductionSymbols and conventions used Safety and instructions For more information and helpQuality and standard guarantee Management declarationStandards Environmental protectionPresentation Views Views of the equipmentNot available for Protect 2.33 No -3 battery cabinet front view with front door closed Corresponding legends for the equipment views LCD Structure Structural schema Operating principleOperation with inverter not active Normal operationOperation with mains failure Operation in manual bypass Parallel operationThere are two operation modes possible Installation Important safety instructionsBattery safety instructions Cabinet access Bypass Input Output Set up and installation Unpacking and content checking Storage Transportation to siteLocation Connection To the mains connection, terminals X1 to Front view for parallel systemPage Connection of the output, terminals X6 to Page Interface relay contacts, connector Connection example between a UPS and two battery cabinetsCOM-interface RS232 and RS485, connector Connector DB9 X31Page EPO terminals Parallel BUS connectionParallel BUS Connection Start up Control before start up Start up procedureOperation Close Battery Switch Complete UPS shutdown LED indications control panel PCTransfer to maintenance bypass Emergency power off EPO operationBypass manual switch Maintenance Principle of operation Transfer to normal operation Close Battery Switch Touch Screen Control panel and display descriptionControl panel parts Basic functions of keyboard from synopticControl panel parts Messages menus and classification in submenus MainMenu structure Screen description Main level screen menu Screen 0.0 Main ScreenUPS status control screen menu MainPage 3. ‘‘MEASURES level screen menu Page Page 4. ‘‘SETTINGS level screen menu Screen 3.0 Settings and its submenusModbus Screen Page Page 5. ‘‘ALARMS level screen menu UPS Rectifier blocks Alarm list displayed in the LCD panel Alarm Page Page Alarm Page Page Page Page Alarm Error in configuration memory 6. ‘‘DATA Logger level screen menu Screen 5.0 Data logger Page Battery fuses Maintenance, warranty and serviceBasic maintenance guide BatteriesCapacitors Warranty conditionsCooling Fan Annexes Static Bypass Type External battery cabinet Dimensions & Weight External Battery CabinetSafety Instructions To provide forPage Page Page Operating Instructions 8000032013 BAL, EN

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