APC 6000 UPS theory of operation

Page 20 - 6739389EN/FB

UPS theory of operation (continued)

Operation with battery

Mains 1 power up:

◗ the inverter receives power from

the rectifier-charger and supplies

power to the load. There is no

direct connection between Mains 1

and the load.

load

Mains 1

rectifier-

charger

battery

inverter

Mains 1 power down:

◗ the inverter runs on battery power

and supplies power to the load;

◗ the battery discharges.

Maintenance position

(disconnected):

◗ no power to the load (except in

parallel connected systems, where

other units supply power).

load

Mains 1

rectifier-

charger

battery

inverter

Q1 Q5N

QF1

load

Mains 1

rectifier-

charger

battery

inverter

Contents

Main 6739389EN/FB - Page 1 MGETM GalaxyTM 6000 50, 60 Hz 250 - 600 kVA "GTC link" communication interface User manual GALAXY 6000 400 kVA SALLE IQ Page Contents Presentation Communication settings JBUS protocol UPS theory of operation Unitary UPS Presentation Introduction "GTCZ" and "GT2Z" boards features The ACQ module The COM module Communication settings JBUS protocol Introduction Principle Synchronizing data exchanges Description of request and response frames Checking received messages on the slave side Functions Function 1 and 2: read N bits bits; The number of bits must be less than or equal to the bit field size (see memory board). Page 10 - Function 3 and 4: read N words The number of words must be less than or equal to the word field size (see memory board). Function 5: writing a bit words; Function 6: writing a word Function 8: reading error diagnosis counters Each slave manages a set of nine 16 bit counters for error diagnosis (see opposite): Function 11: reading event counters Function 15: writing n consecutive bits Function 16: writing n consecutive words Page 14 - CRC 16 algorithm Example of CRC computation Example of CRC 16 computation in "C" using table lookup Page UPS theory of operation Unitary UPS Mains 1 power up Mains 1 power down Major overload UPS theory of operation Parallel connected UPS with "Static Switch" UPS without Mains 2 Operation without battery UPS theory of operation Operation with battery Unitary UPS battery Mains 1 Q1 Q5N QF1 Q3BP Q4S Unitary UPS Main status bits (UPS operating information) Load on battery Normal operation Unitary UPS Load on Mains 2 Load on bypass Page Parallel connected UPS Main status bits of system operations Normal operation Load on battery Disconnected Static Switch cubicle Static Switch Main indicators of system operations Normal operation Load on Mains 2 Load on bypass System information Message format Example of read data array commands sent by the terminal Sample commands List of variable fields General definitions Signaling field (same for all cubicle types) Tables of measured data Current fields Voltage fields Power fields Frequency fields Battery and adjustments fields Tables of binary data Rectifier-charger Inverter Connectivity higher than 800 kVA. Global information Table of control devices Telemonitoring information Glossary of information descriptors Word address: 40 Word address: 41 Word address: 44 Word address: 46 Word address: 48 Word address: 49 Word address: 4A Word address: 4C (summary of operating information) Glossary of telemonitoring information descriptors Word address: 50 Word address: 51 Word address: 52 Word address: 4D Word address: C1