Category: Woodward

Sensor Wiring

Overview

Connect the correct sensor leads to the main board according to the lead locations labeled directly on the

main board.

Rosemount Analytical SMART pH sensors can be connected to the 1066 using either the integrated cable

SMART sensor or a compatible VP8 pH cable.

After completing the wiring of the sensor leads, carefully route the excess sensor cable through the cable

gland.

Separate the sensor and output signal wiring from the loop power wiring. Do not place the sensor and

power wires in the same conduit or near a cable bridge.

Sensor Wiring Details

Sensor wiring should be done in the order shown above.

If the solution ground terminal is left open without doing so, a high reference impedance fault alarm will

continue to sound.

TB4 Preamplifier Power: The power wire from the pH sensor or preamplifier in the junction box is

connected to this terminal to supply power to the preamplifier.

TB1 pH Electrode Input: The pH electrode lead and its shield are located on this terminal as shown.

Smart pH Sensor: The smart pH sensor has a ground wire (not to be confused with the solution ground

wire)

that should be connected to the enclosure ground as shown in the power wiring diagram

Applications 

The SECM70 control platform is suitable for a variety of applications including gasoline and

natural gas engines for power generation, forklifts, forklifts, and on-highway vehicles.

The SECM70 control system is programmed to meet the specific needs of prime movers and the loads they drive.

At the heart of the SECM70 control system is a powerful 32-bit ST SPC563M64 microprocessor running Woodward’s ControlCore operating system.

Application programming is done through Woodward’s MotoHawk application software tool.

MotoHawk is a rapid control system development tool that allows control engineers to quickly create

control software directly in Simulink diagrams and run it on any MotoHawk enabled electronic control module.

Working directly in the Simulink environment, application developers can turn application models into files

that can be programmed directly into Woodward production hardware in a single build step.

MotoHawk provides an advanced programming environment for users with control system expertise

but not necessarily specific embedded programming skills.

Once the application is generated and loaded into the SECM70 controller via the CAN port,

users can view variables and adjust controls using appropriate service interface tools such as Woodward’s ToolKit or MotoTune.

Connectivity to other devices, such as diagnostic tools, can be accomplished through additional CAN ports on the controller.

The required information flow can be programmed into the controller via MotoTune or ToolKit.

The SECM70 controller consists of a rigid printed circuit board that is attached to an aluminum housing with thermal adhesive.

It is then closed and sealed with an aluminum cover. Connection to the controller is made through

a single 70-pin automotive style sealed connector.

The controller can be mounted directly to the engine or frame using vibration isolators pre-installed on the controller or supplied separately.

Outputs:

8 electronic spark triggers for smart ignition coils

9 low-side drivers, 3 lamp drivers

1 main power relay driver to power engine electrical components

2 H-bridge drivers for electric throttle and actuator

1 sensor power (5 V) output

Communication:

2 CAN 2.0b channels

Our online pricing is available for orders up to 50 pieces.

If you require higher volumes, please contact Woodward for volume pricing and/or to purchase modules

only (without mounting kit)

Connectivity to other devices, such as diagnostic tools, can be accomplished through additional CAN

ports on the controller.

The required information flow can be programmed into the controller via MotoTune or ToolKit.

The SECM70 controller consists of a rigid printed circuit board that is attached to an aluminum housing

with thermal adhesive.

It is then closed and sealed with an aluminum cover. Connection to the controller is made through

a single 70-pin automotive style sealed connector.

The controller can be mounted directly to the engine or frame using vibration isolators pre-installed on

the controller or supplied separately.

Control Functions

.2 engine speed inputs: camshaft and crankshaft speed 

.2 frequency inputs

.23 analog inputs

.1 emergency stop input

.5 switch inputs

.2 HEGO sensor inputs

.2 LSU sensor inputs (also known as UEGO sensors)

.2 burst sensor inputs

.3 sensor power outputs, 2 providing +5 V (100 mA), 1 providing +5 V (50 mA)

.8 saturation injector drivers

.4 ignition coil drivers

.2 H-bridge driver outputs providing 10 A drive capability and current sense feedback

.MPRD (Main Power Relay Driver) low-side outputs

.TACH low side output

.15 low side output drivers

.3 analog instrumentation drivers

.3 CAN communication ports

.1 RS-485 communication port

. 4 KB serial EEPROM for adjustable parameter storage .

. Auxiliary miniature with 128k Flash, 8k RAM, 4k EEPROM.

Features and Functionality

Application programming is done on the PCM112 using Woodward’s MotoHawk application software tool.

MotoHawk is a rapid control system development tool that allows control engineers to quickly create control software directly in Simulink diagrams.

The software runs on any electronic control module that supports MotoHawk.

Working directly in the Simulink environment, application developers can convert application models

into files that can be programmed directly into Woodward production hardware in a single build step.

MotoHawk provides an advanced programming environment for users with control system expertise

but not necessarily specific embedded programming skills.

Once an application has been generated and loaded into the PCM112 controller via the CAN port, the

users can view variables and tune the controller using appropriate service interface tools such as Woodward’s ToolKit or MotoTune.

Connections to other devices (such as diagnostic tools) are accomplished through other CAN ports available on the controller.

The required information flow is programmed into the controller via MotoTune or ToolKit.

The PCM112 controller consists of a rigid printed circuit board that is attached to an aluminum enclosure

using thermally conductive adhesive and then closed and sealed with an aluminum cover.

Connections to the controller are made via three automotive style sealed connectors.

The controller can be mounted directly to the engine or frame using vibration isolators.

The 8923-2241 includes the 1751-6685 module and mounting kit.

Woodward also offers a suite of software service-tools to

simplify system troubleshooting and service. These tools

provide high-speed (5 milliseconds) operational and

analytical information such as graphical display of operating

data, historical trending, event logging, X-Y plotting, system

overviews, calibration pages, and other functions.

Expandability

The MicroNet TMR platform is expandable into additional expansion chassis as required by the system size, and will

support any mix of I/O, including networked and/or distributed I/O. Redundant “Real-Time Ethernet” networks are

utilized between main and expansion chassis to ensure a fast and reliable communications. Expansion chassis are

available in 6-, 8-, 12-, or 14-slot models. This TMR architecture allows all remote I/O points to be automatically

shared with each kernel CPU, increasing system robustness and availability.

Communications

The MicroNet TMR platform’s open-architecture allows

users to easily interface with plant DCSs, HMIs, and

distributed I/O devices for system operation, as well as

control programming and service. Multiple

communication ports and protocols are available for

system communications, allowing users to select their

desired communication method and level of

communication redundancy. MicroNet-to-DCS

communications have been performed and qualified with

all major DCS vendors. The following communication

ports are available for use:

• Ethernet ports (10/100 BaseT)

• RS-232/-422/-485 Serial ports

• LON network for LinkNet® Distributed I/O Modules

Protocols Supported:

• Modbus® * (Serial or Ethernet)

• Ethernet TCP/IP & UDP

• OPC (OLE for Process Control)

• Printer Drivers, Modems, Data Loggers

Programming

The MicroNet TMR control system provides an

IEC1131-3 environment for programming. Application

code is generated by use of Woodward’s GAP™

Graphical Application Programming environment or

Woodward’s Ladder Logic programming environment.

• Function Block Programming — through Woodward GAP

• Sequential Function Chart Programming — through

Woodward GAP

• Ladder Logic Programming — through Woodward

Ladder Logic Programmer

The MicroNet TMR operating system, together with

GAP, produces a very powerful control environment

designed for control and protection of turbines and

compressors. Woodward’s unique scan rate structure

ensures that control functions will execute

deterministically at defined scan rates, with critical

control loops able to be processed within 5 milliseconds.

Accurate speed and speed acceleration and

deceleration rates are sensed using a sampling rate of

100 microseconds. These ultra-fast sampling and

response rates allow the controller to adequately

respond to system transients, failures, or safety events.

Fault Tolerance

Each of the MicroNet TMR controller’s kernel sections

individually monitors all input data, performs all

application calculations, and generates all output values

and responses. This control’s architecture allows it to

operate with any single point of failure, without shutting

down. Architected for reliability and safety, the system’s

CPU fault tolerance logic of 3-2-0 allows the control to

function normally with any CPU module failed or

removed, and ensures a safe shutdown with multiple

CPU failures. An analog I/O fault tolerance logic of 3-2

1-0 allows the control to function normally with any one

or two analog modules failed or removed. A discrete I/O

fault tolerance logic of 3-2-1-0 allows the control to

function normally with any one or two discrete modules

failed or removed. A power supply fault tolerance logic of

2-1-0 allows the control to function normally with any one

power supply failed or removed.

Each kernel CPU module runs the identical software

program, in “lock-step” with the other two CPUs. All

inputs from each kernel are distributed to the other two

kernels. For each sensed input, each CPU compares its

read value with the value the other two CPUs read

before outputting a signal to the application software. All

CPUs use the same voted input signals in the same

application calculations to generate the same outputs.

All output values are then exchanged between kernels,

the results are voted, and the appropriate value is output.

MicroNet TMR features include:

IEC61508 SIL-3 certified

Network-safe CPUs

Simplex or redundant CPU configurations

VME-based (full and narrow chassis)

Real-time multitasking VxWorks® operating system

Woodward’s proven Graphical Application Programmer (GAP) software and support tools

Deterministic update rates as fast as 5 milliseconds

Improves control system availability and reliability

SNTP-compliant for time synchronization

Expandable with redundant real-time networks in CAT-5 or fiber optic configurations

Ethernet communications

Simplex or dual power

Modular I/O

Events are timestamped to 1 millisecond

Hot-swap modules for in-line maintenance

MicroNet TMR features include:

Speed and load control

Temperature and process control

Combustion control

Anti-surge control

System sequencing and package assist control

Tight load rejection performance

Sophisticated DLE fuel control algorithms

Initial surge detection

Long-term naval program

Alarm + shutdown communicationsWoodward MicroNet TMR® Control System