WOODWARD 9905-760 ASSYOF LINKNET TERMINATION

 

WOODWARD 9905-760 LINKNET TERMINATION Module ensures that all generators reach a consistent frequency and phase angle before grid connection, thereby avoiding surge currents and equipment damage. It enables synchronous control and load distribution among multiple generators or power systems.

The LINKnet option provides distributed I/O capabilities for the MicroNet control system. The LINKnet I/O modules, while slower and less powerful than MicroNet I/O modules, are well-suited for non-turbine control functions like sequencing and monitoring.

An I/O network consists of a single 4Ch LINKnet Controller Module, which provides four independent network trunks of up to 60 I/O modules each. The LINKnet I/O modules, or nodes, on each trunk are attached to the LINKnet controller module via a single twisted pair wire. One 4Ch LINKnet Controller Module can therefore interface with as many as 240 LINKnet I/O modules, each having multiple channels, through four twisted pair wires.

 

Each of the four channels, or groups, on the LINKnet controller module 9905-760 may run in a different rate group. The rate group for each channel is defined in the application program. The controller module scans all of the nodes asynchronously to the channel rate groups.

Each LINKnet I/O module has two rotary switches that are used to set its network address. On installation, these switches must be dialed so that the I/O module's number, 1-60, matches the network address defined for this I/O module in the application program. The I/O modules may be placed in any order on the network, and gaps are allowed in the address sequence.

Each network consists of one channel of a LINKnet controller module 9905-760 and many I/O modules. The I/O modules include thermocouple, RTD, 4-20 mA, and discrete input modules, as well as 4-20 mA and relay output modules. All of the analog modules consist of six channels per module. The relay output module contains eight channels, and the discrete input module has 16 channels. Each I/O module is housed in a plastic, field termination module type package for DIN rail mounting. The LINKnet I/O modules can be mounted in the control cabinet or in any convenient location in the vicinity of the prime mover that meets the temperature and vibration specifications. The LINKnet system accommodates hot-replacement of faulty nodes.

 

Working principle

01

Synchronization process

Detection frequency → Detection phase → Adjust output → Achieve synchronization → Grid connection

 

The 9905-760 module continuously compares the parameter differences between the generator and the grid, and automatically adjusts:
Speed (Frequency) Voltage
Phase

02

Load control process

Detect load → Analyze requirements → Adjust output → Balance power

The system will adjust according to changes in load:
Increase or decrease the power generation capacity
Prevent overloading
Optimize energy utilization

 

 

 

Q&A

 

Contact: info@htechplc.com

Unable to synchronize

 Phase error
 Parameter setting error

Uneven load distribution

 Sensor malfunction
 The issue of control parameters

Communication failure

 Network failure
 Address conflict

Generator

overload

 Load distribution imbalance
 Inappropriate control parameters

 

 

The product is used in DCS system modules, PLC modules, vibration monitoring equipment, and various industrial control systems. We have global supply chain resources and offer competitive prices. Our experienced technical team provides prompt and effective after-sales service support.

Have the capacity to supply spare parts and provide professional technical support, and offer a 12-month warranty.