6945-377 Woodward Ship Spare Parts

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Product basic information
Manufacturer: Woodward
Model: 6945-377
Belonging to the famous 505 series
Supports multiple communication protocols and can be smoothly integrated with the existing control system of the factory
Core application: Designed specifically for speed control and protection of steam turbines
6945-377 controller has stable performance and high reliability

Categories: WOODWARD
Tags: - Actuator 6945-377 controller debugger module Motor touch screen WOODWARD

6945-377 Woodward Ship Spare Parts

The 6945-377 is a microprocessor-based digital governor controller produced by Woodward, belonging to its classic 505 series.
It is primarily designed for speed control and protection of steam turbines. Below is a detailed introduction to this product:

I. Product Overview

Brand and Model: Woodward 6945-377
Series: 505 Series Digital Governor
Type: Microprocessor-based controller
Purpose: Specifically designed for steam turbines to control their speed and provide overspeed protection.

II. Core Functions

Speed Control:
- 6945-377 Precisely controls the speed of steam turbines by adjusting steam inlet flow.
- Supports single-range or split-range actuators to accommodate turbines of different sizes.
Overspeed Protection:
- Incorporates triple independent overspeed protection logic to ensure rapid shutdown in case of overspeed, preventing equipment damage.
- Provides an overspeed test button for convenient on-site testing of protection functions.
Emergency Shutdown:
- Equipped with an emergency stop button for immediate shutdown in emergency situations.
System Protection:
- - Automatically switches control modes upon sensor failure to ensure uninterrupted system operation.
  - Offers local/remote control priority selection to adapt to different operational scenarios.

What is a logical drive

A logical drive is a virtual drive in an array that can occupy more than one physical disk.

Logical drives divide the array or disks across the array into contiguous storage spaces, which are distributed across all disks in the array.

The NetRAID controller can set up to 8 logical drives of different capacity sizes, and at least one logical drive must be set up in each array.

Input/output operations can only run when the logical drive is online.

There are three types of hard disk partitions: primary disk partition, extended disk partition, and logical partition.

A hard drive can have one primary partition, one extended partition, or only one primary partition without an extended partition. Logical partitioning can be multiple.

The primary partition is the boot partition of the hard disk, which is independent and the first partition of the hard disk. If divided normally, it is the C drive.
After dividing the main partition, the remaining part can be divided into extended partitions. Generally, the remaining part can be fully

divided into extended partitions or not fully divided, and the remaining part will be wasted.

But extended partitions cannot be directly used, they are used in a logical partition manner, so extended partitions can be divided into several logical partitions.

Their relationship is an inclusive relationship, and all logical partitions are part of the extended partition.

III. Technical Specifications

Power Supply: 18-32 VDC, supporting 24VDC input.
Display: Two-line x 24-character LED display for clear indication of operating status and parameters.
Enclosure: NEMA 4X or IEC 60529 IP56 rated for protection against harsh industrial environments.
Inputs/Outputs:
- Inputs: 6 programmable current inputs, 16 discrete contact inputs.
- Outputs: 2 actuator outputs, 8 relay outputs, 6 programmable current outputs.
Communication Interfaces: 6945-377 Supports RS-232, RS-422, and RS-485 hardware interfaces for easy integration with host computers or other devices.
Software: Equipped with OpView™ and 505View software for parameter configuration, monitoring, and fault diagnosis.
Operating Temperature: -20 to +60°C (some models support -4 to +140°F).
Storage Temperature: -40 to +85°C (some models support -40 to +185°F).
6945-377 Weight: Approximately 9.11 pounds (4.13 kilograms).

IV. Application Scenarios

Steam Turbine Control: 6945-377Suitable for steam turbines of various sizes, including industrial steam turbines, small grid turbo-generators, and turboexpanders.
Single Extraction and Admission Applications: Designed for operating steam turbines in single extraction and/or admission applications.
On-Site Programming: Allows on-site operators to program and adjust parameters through an integrated operator control panel, adapting to different operating conditions.

V. Product Advantages

High Reliability:
- Microprocessor-based design ensures precise control and stability.
- Triple independent overspeed protection logic provides multiple layers of safety.
Flexibility:
- Supports various actuator and sensor configurations to accommodate different turbine models.
- Offers a rich set of input/output interfaces for easy system expansion and integration.
Ease of Use:
- Two-line x 24-character LED display provides an intuitive operating interface.
- A 30-key multifunctional keyboard simplifies parameter configuration and operation.
Compatibility:
- Supports multiple communication protocols for easy integration with DCS, PLC, and other systems.
- Provides OpView™ and 505View software for remote monitoring and fault diagnosis.