Woodward easYgen-3000XT Series, Manual, Page: 266 / 1205

4.4.3.1.2 Synchronization GCB/MCB
The following applies to application modes
A03
and
A04
.
The synchronization is active, if the following conditions are met simultaneously.
The display indicates "Synchronization GCB" or "Synchronization MCB".
Automatic operation
• The operating mode AUTOMATIC has been selected •
• The mains voltage is available and within the configured operating range ( ╚═▷ •
“4.5.3.3 Mains Operating Ranges” )
• The generator and busbar voltage are available and within the configured operating •
range ( ╚═▷ “4.5.1.1 Generator Operating Ranges: Voltage / Frequency / Busbar” )
• The differential frequency/voltage is within the configured operating range •
• Synchronizing the MCB •
◦ The GCB is closed (or at least one GCB is closed in a multiple genset ◦
application)
◦ The busbar voltage is within the configured operating range ◦
◦ The "Enable MCB" (parameter ╚═▷ 12923 ) signal is present, for example ◦
discrete input 6 is energized if configured as DI 6
• Synchronizing the GCB •
◦ The MCB is closed ◦
◦ The busbar voltage is within the configured operating range ◦
◦ Engine delayed monitoring (parameter ╚═▷ 3315 ) and generator stable time ◦
(parameter ╚═▷ 3415 ) have expired or "Undelay close GCB" (parameter ╚═▷
12210 ) is enabled
Manual operation
• Operating mode MANUAL has been selected •
• The generator and busbar voltage are available and within the configured operating •
range ( ╚═▷ “4.5.1.1 Generator Operating Ranges: Voltage / Frequency / Busbar” )
• The differential frequency/voltage is within the configured operating range •
• Synchronizing the MCB •
◦ The GCB is closed (or at least one GCB is closed in a multiple genset ◦
application)
◦ The busbar voltage is within the configured operating range ◦
◦ The "Enable MCB" (parameter ╚═▷ 12923 ) signal is present, for example ◦
discrete input 6 is energized if configured as DI 6
266 easYgen-3000XT Series B37574
4 Configuration
4.4.3.1.2 Synchronization GCB/MCB
Released