Woodward 8440-1934 Generator Set Controller HMI Easygen-3500-5 Control Screen

Description

The easYgen-3500XT with a dedicated CANopen network for connectivity to up to 16 LS-5 Circuit Breaker Controls, enables control of complex distribution systems having multiple utility feeds and tie breakers, and parallel load sharing of up to 32 generators on up to 32 different bus segments. Redundant load sharing is selectable using both Ethernet B and C networks for improved reliability.

The control combines complete engine-generator control and protection with advanced, peer-to-peer paralleling functionality and innovative features in a robust, attractive, user-friendly and all-in-one package. The easYgen-3500 XT controls are designed to direct connect up to 690Vac and operate to 4000m above sea level without derating.

Master slave bus communication mode
The master-slave bus communication method, also known as the 1: N communication method, refers to the presence of N stations on the PLC subnet of the bus structure, with only 1 master station and the rest being slave stations.

1: The N communication method uses centralized access control technology to allocate bus usage rights, usually using the polling table method. The so-called polling table is a list of slave numbers arranged in order, which is configured in the master station. The master station queries the slave stations according to the order of the polling table to see if they want to use the bus, in order to achieve the purpose of allocating bus usage rights.

For stations with high real-time requirements, it is possible to have their slave numbers appear multiple times in the wheel tracking table, giving the station higher communication priority. In some 1: N communications, the polling table method is combined with the interrupt method, and emergency tasks can interrupt normal periodic polling to obtain priority.

1: In the N communication method, there are two data transmission methods when the slave station obtains bus usage rights. One is to only allow master-slave communication and not to allow slave communication. To exchange data between slave stations, they must be transferred through the master station; Another approach is to allow both master-slave communication and slave communication. After the slave station obtains the bus usage rights, it first arranges master-slave communication, and then arranges communication between itself and other slave stations.

Token bus communication method
The token bus communication method, also known as N: N communication method, refers to the presence of N stations on the PLC subnet of the bus structure, with equal status and no distinction between master and slave stations. It can also be said that N stations are all master stations.

N: The N communication method adopts token bus access control technology. Form a logical ring on the physical bus, allowing a token to move in a certain direction in the logical ring, and the station that obtains the token obtains bus usage rights. The token bus access control method limits the token holding time of each station, ensuring that each station has the opportunity to obtain bus usage rights and provide priority services during a one week token cycle. Therefore, the token bus access control method has good real-time performance.
There are two data transmission methods for the station that obtains the token, namely the non responsive data transmission method and the responsive data transmission method. When using the unresponsive data transmission method, the station that obtains the token can immediately send data to the destination station, and the communication process is completed after the sending is completed; When using the response data transmission method, the communication is not considered complete after the station that obtained the token sends data to the destination station. The entire communication process must wait until the destination station obtains the token and sends the response frame to the sending station. The latter has a significant increase in response time and a decrease in real-time performance compared to the former.
Floating Master Station Communication Method
The floating master station communication method, also known as N: M communication method, is suitable for PLC networks with bus structures. It refers to the presence of M stations on the bus, where N (N<M=master stations, and the rest are slave stations).
N: The M communication method adopts access control technology that combines token bus and master-slave bus. Firstly, N master stations are formed into a logical ring, and tokens are used to move sequentially in the logical ring, allocating bus usage rights between N master stations, which is the meaning of floating master stations. The master station that obtains bus usage rights then determines which stations to communicate with during its own token holding time in a master-slave manner. Generally, there is a polling table configured in the master station, which can be used to poll other master and slave station numbers arranged on the polling table. The main station that obtains the token can prioritize communication tasks randomly proposed by users before or after polling.

The master station that has obtained the right to use the bus can communicate with the destination station through various data transmission methods, among which the non responsive and non connected method is the fastest.

NTLS01
NTMF01
NTMU01
NTMU02
NTPL01
NTRL02A
NTST01
PHAREPRFO10000
PHARPS32000000
PHBAIN1200S100
PHBAIN2200S100
PHBAOT1500S100
PHBBLK10000100
PHBBLK10010000
PHBDIO4000R100
PHBDOT1000S100
PHBRMU1000N100
PHBRMU10010000
PHCBRCPBA10000
PHKRMPBA2000A
PMKHRMMCL10
NKTU11-11
NKTU11-12
NKTU11-13
NKTU11-15
NKTU11-16
NKTU11-17