Woodward: GC-3400XT-P1 8440-2267 Group Controller

Group Controller – GC-3400XT-P1

Manual easYgen | GC-3000XT

The group controller concept is based on the idea to combine up to

31 easYgen3000XT with one group controller into a group. In

release 1 up to 8 groups can be connected on a common load

busbar. Therefore it is possible to run up to 248 generators

together.

Through a provided mains AC measurement of the group controller

the device can support a synchronization of a circuit breaker at the

interchange point to utility

The Generator Group is defined as follows:

n 1 Group Controller GC3000XT (GC) per Group

n A group contains up to 31 easYgens

n Theoretically up to 31 groups are possible (Release 1 provides

up to 8 GC)

n The GC manages a Generator Group Breaker (GGB) with syn

chronization and dead busbar closure

n The GC participates on the Internal Group Load Share commu

nication by CAN/Ethernet

n The GC participates on the Group Load Share communication

to other GC by redundant Ethernet

n The GC provides Toolkit as HMI for service purposes

n The GC provides relevant data for PLC and SCADA systems

(Modbus TCP)

n Load share communications are performed with redundant

communication channels.

n The GC contains the LDSS algorithm and starts/stops up to

248 easYgens.

n The LDSS algorithm can be emulated with a PC program

n The outcome of the emulation can be a parameter transfer to

the GC devices

The group controller leads its own easYgens in voltage and fre

quency to support a tie- or MCB synchronization.

n The group controller leads its own easYgens in active and

reactive power to unloading the MCB at the interchange point

2: GC-3400XT-P1 (sheet metal housing)

1 Mains/generator/busbar PT terminal

2 Analog inputs/outputs, generator CT, and

mains/GND current terminal

3 Discrete inputs, MPU, power supply, and D+ ter

minal

4 Relay outputs terminal

5 CAN bus interface connector CAN #2 (not sup

ported)

6 RS-485 interface connector RS-485 #1 (not sup

ported)

7 CAN bus interface connector CAN #1

8 CAN bus interface connector CAN #3 (not sup

ported)

9 USB interface connector (2.0. slave) SERVICE

port

10 ETHERNET interface connector (RJ-45) LAN C

11 ETHERNET interface connector (RJ-45) LAN B

12 ETHERNET interface connector (RJ-45) LAN A

The following parts are included in the scope of delivery. Please

check prior to the installation that all parts are present.

Fig. 3: Scope of delivery – schematic

A Device GC-3400XT-P1 (sheet metal housing). All screwable

terminal connectors are delivered with plug and jack.

B Product CD (configuration software) and manual.

The group controller concept is based on the idea to combine up to

31 easYgen3000XT with one group controller in a group. The data

flow within this group shall be handled either by CAN or Ethernet or

CAN/Ethernet. This communication bus is named as “Internal

Group Load Share Bus”. The group controller collects and sorts the

data of its group and acts itself as a “Big Genset” control to other

group controller(s). The group controller shares therefore the

needed data over a second communication bus, here named as

“Group Load Share Bus”. Through the decoupling of the overall

data, the bus band width can be kept low and the single genset

operation can be kept alive, even if a group controller fails. Further

features of the group controller concept is the handling of a group

breaker, which is often required. So the group controller can syn

chronize or serve the breaker in dead busbar situations accord

ingly.

Additionally the group controller supports the synchronization of a

tie- or MCB breaker, if the own group is involved.

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