Mitsubishi Electric 9900CX SERIES User Manual

MITSUBISHI ELECTRIC 9900CX SERIES UPS
9900CX SERIES UPS
OWNERS / TECHNICAL MANUAL
3.4 OPERATING PROCEDURES
For Parallel Operation system, refer to section “D) MMS Start-up Procedure”.
(Parallel Operation system is herein after MMS [Multi Module System])
A) Start Operation
CAUTION : Before the UPS startup, the internal Bypass line starts to supply
the unconditioned bypass input power to the critical load if the
External input (or Bypass) Circuit Breaker is closed. Be extremely
careful with closing the External input (or Bypass) Circuit Breaker.
a) Verify that the External Bypass Input Circuit Breaker for each unit is closed (user supplied).
If a dual source is feeding the UPS, close the External AC Input Circuit Breaker (user
supplied) manually also.
b) Close Battery Disconnect Circuit Breaker (user supplied).
c) The LCD panel boots up automatically, and the screen will show that the Load is powered
by bypass line.
d) On the LCD panel, select “OPERATION” tab, and then press the “START OPERATION”
button to proceed UPS start-up. (Refer to Figure 2.3).
e) Follow the “START OPERATION” guidance accordingly until the completion of the inverter
startup.
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.
Page Number:
3-8

Mitsubishi Electric 9900CX SERIES Specifications

General

Brand	Mitsubishi Electric
Model	9900CX SERIES
Category	Power Supply
Language	English