Mitsubishi Electric 9900CX SERIES Owner Technical Manual page 48

C) Bypass Operation Procedure
** Transfer from Inverter to Bypass
1. Check for "SYNC" on the LCD.
2. Press the "START/STOP" icon on the LCD.
3. Follow the "STOP OPERATION" guidance and Press the "STOP" icon on the LCD.
** Transfer from Bypass to Inverter.
1. Press the "START/STOP" icon on the LCD.
2. Follow the "START OPERATION" guidance and Press the "START" icon on the LCD..
NOTE : When "REMOTE OPERATION MODE" is displayed on the LCD panel,
the inverter start operation can only be performed remotely. If local
inverter start or stop operation is required (at the UPS), select "LOCAL
ONLY" or "REMOTE & LOCAL" in the OPERATION MENU.
D) MMS Start-up Procedure
External Circuit Check
1. Verify that Critical Load Cabinet (CLC) Circuit Breaker SMB is closed.
2.
Verify that CLC System Output Circuit Breaker 52L is open.
3.
Verify that CLC UPS Circuit Breakers 52L1, 52L2...and 52Ln are closed.
Start-up from UPS-1 to UPS-n
1.
Start-up each UPS in accordance with " A) Start Operation* ". Each UPS will start Inverter
Operation in synchronization with the bypass input.
*Meaning of the icons
INV. START: UPS Module Startup
INV. STOP: UPS Module Stop
START: Parallel-in**
STOP: Parallel-off
Transfer from Maintenance Bypass to MMS Bypass Operation
1.
Close the CLC System Output Circuit Breaker 52L.
2.
Open the CLC Circuit Breaker SMB.
NOTE : When "REMOTE OPERATION MODE" is displayed on the LCD panel,
9900CX SERIES UPS
OWNERS / TECHNICAL MANUAL
in Figure 2.3(a) in MMS
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 9900CX SERIES UPS
**No effect in MMS Bypass Operation
Page Number:
3-10