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Prepare by: Jerome Low 19 September 2013 Page 1

Woodward Easygen 3500 Generator Control and

LS-5 Circuit Breaker Control and Protection

APPLICATION POSSIBILITY

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Prepare by: Jerome Low 19 September 2013

This documentation is made for end user to understand the implementation and application

concepts of using the Woodward Easygen 3500 generator controller together with the

Woodward LS-521 circuit breaker control. The part number that we are demonstrating h

Woodward Easygen 3500 Part

Woodward LS-521 Part Number:

For more information about the functionality and features of the implemented modules, please

refer to the product specifications as below

a) Easygen 3500 – Product Specification

b) LS-521 – Product Specification

The application in this case is 6 generators divided into 2 groups and a tie breaker in between

(Please refer to figure 1). Each of the

management and a single controller LS

the group 1 and group 2 generators.

Traditionally management between 2 or more group of generators requires intensive amount

of wiring and PLC for commun

or failure can result in system being unstable especially during critical stages of generator group

synchronization and load sharing.

Figure 1

AIR ENGINEERING PTE LTD

19 September 2013

This documentation is made for end user to understand the implementation and application

concepts of using the Woodward Easygen 3500 generator controller together with the

circuit breaker control. The part number that we are demonstrating h

3500 Part Number: 8440-1934 and

Part Number: 8440-1947

For more information about the functionality and features of the implemented modules, please

refer to the product specifications as below

Product Specification 37522A

Product Specification 37523A

The application in this case is 6 generators divided into 2 groups and a tie breaker in between

(Please refer to figure 1). Each of the generators is installed with an Easygen 3500 f

management and a single controller LS-521 is installed on the tie-breaker for management of

the group 1 and group 2 generators.

Traditionally management between 2 or more group of generators requires intensive amount

of wiring and PLC for communications with the individual generators and these wiring mistake

or failure can result in system being unstable especially during critical stages of generator group

synchronization and load sharing.

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This documentation is made for end user to understand the implementation and application

concepts of using the Woodward Easygen 3500 generator controller together with the

circuit breaker control. The part number that we are demonstrating here is

For more information about the functionality and features of the implemented modules, please

The application in this case is 6 generators divided into 2 groups and a tie breaker in between

Easygen 3500 for genset

breaker for management of

Traditionally management between 2 or more group of generators requires intensive amount

ications with the individual generators and these wiring mistake

or failure can result in system being unstable especially during critical stages of generator group

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Prepare by: Jerome Low 19 September 2013 Page 3

Now with the combination of Easygen 3500 and LS-521, the application requirements are made

simpler without sacrificing the flexibility of these solutions. The communication between the

LS-521 and individual generators are made possible by a simple 2 wire (CAN-H, CAN-L) CANBus

protocol. This not only allows the respective modules to communicate more effectively but also

reduce the wiring and even replaces the PLC under certain situation.

The proposed solution can be connected with up to 32 Easygen 3500 together with 16 LS-521

for multiple mains incoming and bus bar coupling.

Refer to figure 1, each Easygen 3500 is assigned to control their respective GCB. The controllers

will manage the synchronization and load sharing process within the group without the

involvement of the LS5 if the tie breaker is open.

For coupling of Group 1 and 2 generators, the LS-521 is already pre-assigned with what we call

the segment. Busbar A is assigned segment 1 while Busbar B is 2. Upon the command from PLC

or panel input switches to the LS-521 input for synchronization, LS-521 via CANBus will

command group 1 and 2 for a synchronization electrical parameters matching to close the tie-

breaker. Once the synchronization process is complete, the LS-521 must receive tie-breaker

feedback input to start the load sharing process as a single group (G1,2,3,4,5,6). In this case

now all the units will recognize Busbar A and B as only segment 1.

The philosophy of Woodward Easygen 3500 and LS5 on more complex applications with

multiple mains and busbar coupler is by making use of the segment assignment concept. When

2 or more Busbar /mains of different segment are coupled together, the lower number will be

assigned and recognized by the Woodward controllers for the group load management. A

typical example is illustrated in figure 2 below

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Prepare by: Jerome Low 19 September 2013

Figure 2

Load dependant start/stop comes as a standard feature for the Easygen 3500. As the name

implies ‘load dependent’ ,modern generator controllers must have the capability to

management starting and stopping sequence

Easygen 3500 achieves this by assigning based on customer

engines size, remaining maintenance hour or the generator number. With these settings pre

programmed into the controller and via Canbus

plant/factory/datacenter load.

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19 September 2013

Load dependant start/stop comes as a standard feature for the Easygen 3500. As the name

modern generator controllers must have the capability to

management starting and stopping sequence in order to be energy efficient. Woodward

this by assigning based on customer requirement to

engines size, remaining maintenance hour or the generator number. With these settings pre

programmed into the controller and via Canbus, the generators will start/stop depending on

plant/factory/datacenter load.

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Load dependant start/stop comes as a standard feature for the Easygen 3500. As the name

modern generator controllers must have the capability to

energy efficient. Woodward

requirement to generator priority,

engines size, remaining maintenance hour or the generator number. With these settings pre-

, the generators will start/stop depending on

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Prepare by: Jerome Low 19 September 2013

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19 September 2013

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