Procedures Single Megaflex 1000 To 1600 Functioning As Frequency Converter; Initial Start-Up Of The Megaflex 1000 To 1600 As Frequency Converter - ABB MegaFlex UL S1 Series User Manual

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7.2 Procedures single MegaFlex 1000 to 1600 functioning as
Frequency Converter
When the MegaFlex 1000 to 1600 functions as a Frequency Converter, the Automatic Bypass function is disabled.
Therefore, the Load cannot be transferred to Utility in case of overload, short circuit, or Inverter failure.
In situations where the UPS needs to be shut-down for maintenance purposes, also the Load must be shut-down
or disconnected.

7.2.1 Initial Start-up of the MegaFlex 1000 to 1600 as frequency converter

Warning!
Before proceeding to turn ON the UPS system, ensure that the AC and DC external isolators are OFF
and prevent their inadverted operation.
Ensure that the Output Load distribution can be powered and all the Output Isolators are open.
This procedure must be performed for the first start-up following the installation, with the UPS completely
switched Off and not powered.
Open the front door and make sure that:
All the connections to the input/output terminals or bus bars of the UPS have been made correctly.
•
The safety screens are fixed in their position.
•
The "Q1 – External UPS Output Circuit Breaker" and the "External Battery Breaker" must be open (Pos. O).
•
Q1 External UPS Output Circuit Breaker"
with dedicated Auxiliary Contact to be
connected to the UPS is required.
See Section 4.11.2 of the Installation Guide.
LED ALARM
Command
Inverter ON
Command
System shutdown
1. Switch-ON the Utility voltage from the input distribution.
The UPS performs a "Self-test".
A successful termination of the tests will be indicated with Overall test results
"OK".
Commissioning cannot be continued should one or more tests result to be
negative. Please contact in this case your ABB Service Center.
At this stage the Electronic Power Supply and Control Panel are switched ON
and the Buzzer sounds.
Press "MUTE" key to reset Acoustical Alarm.
LED ALARM remains lit.
Megaflex UL
Q1
Load
MegaFlex 1000 to 1600
LEDs on Synoptic Diagram
LED 1 Rectifier
LED 2 Inverter
LED 3 Booster / Battery charger
LED LOAD PROTECTED
Command
Inverter OFF
Command
System shutdown RESET
UPS User Manual / REV-A
LED 4 Automatic Bypass
LED 5 LOAD on UPS
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