Applications

The MicroNet™ Plus control system is a flexible, state-of-the-art digital control system designed specifically for prime mover control applications such as: 
• Gas Turbine Control 
• Steam Turbine Control 
• Hydro Turbine Control 
• Diesel and Gas Engine Control 
MicroNet Plus features, including redundant or simplex CPUs, modular I/O, flexible software environment, and highly accurate time synchroni-zation make it ideal for its target markets: 
• Power Generation 
• Process Industries 
• Oil and Gas Exploration 
• Marine Transportation 
MicroNet Plus control system flexibility and modularity adapt from simple applications with limited I/O to the most complex applications and processes with extensive I/O. I/O modules and application software provide the control engineer with the flexibility to control or monitor every parameter and process of typical applications, including: 
• Speed and Load Control 
• Temperature and Process Control 
• Combustion Control 
• Anti-Surge Control 
• System Sequencing and Package Auxiliary Control 
• Alarm + Shutdown annunciation

MicroNet Plus features and performance are specifically designed for the rigorous requirements of prime mover control. CPU capability, application software recursion rates and determinism, software algorithms, I/O signal conditioning and filtering, and numerous other features combine with long-term support and Woodward service to ensure a smooth start-up and long support life. These features create the ideal product when performance matters: 
• Rigorous load rejection performance 
• Complex DLE fuel control algorithms 
• Incipient Surge Detection 
• Long-term naval programs

Description

The MicroNet Plus control is a VME-based, modular control system with redundant or simplex CPU and power supply options and a variety of I/O module choices. Additional chassis may be added to accommodate larger systems. 
CPUs may be simplex or redundant, depending on customer requirements. A simplex CPU system can be upgraded to redundant CPUs by simply adding a second CPU and making a minor software change. 
I/O Module selection is customized to match customer requirements. I/O can be configured in any combination of simplex, duplex, or triplex and in any combination of analog, discrete, and specialty modules. I/O modules allow for hot replacement without removing control power. 
The MicroNet Plus control utilizes Woodward’s proven graphical application programmer (GAP) software. This function block format programming language provides an efficient means to program prime mover control logic. A Ladder Logic programming environment is also available for those users familiar with this programming structure.

MicroNet Plus Control Chassis 
The MicroNet Plus control is available in two chassis sizes to accommodate different space requirements. Both chassis reserve four slots for redundant power supplies, with the remaining slots available for VME modules (CPUs and I/O modules). CPUs occupy either one (simplex) or two (redundant) slots. 
• Full-size Chassis 14 VME 
• Narrow Chassis 8 VME

MicroNet Plus Control Chassis 
(14 VME slot option)

MicroNet Plus Control Chassis 
(8 VME slot option)

MicroNet Plus CPU, Operating System, and Software

The MicroNet Plus utilizes the robust and powerful 400 MHz 
Motorola* MPC5200 microprocessor. Extended temperature 
operation, suitability to real time operation, and long support 
life all combine to make the MPC5200 the right choice for the 
MicroNet Plus. 
 

*—CPU is produced by Freescale, which separated from Motorola in 
July 2004

MicroNet Plus provides two CPU options depending on the 
application. Either CPU option may be simplex or redundant. 
• CPU5200 
Supports up to 8 chassis for I/O intensive applications 
Supports redundant Ethernet and CAN communication 
Powerful processing for computation-intensive applications 
• CPU5200L 
Single Chassis support for limited critical I/O 
Single Ethernet and CAN communication 
Reduced processing power for limited applications

MicroNet Plus Redundant Operation

The MicroNet Plus system is capable of running in a redundant master / standby configuration to provide higher availability. Synchronized 
memory assures that both CPUs use the same operating information in every rate group. If the master CPU becomes inoperable, full system control, including control of the I/O, is transferred to the standby CPU in less than 1 ms without affecting prime mover operation. After correcting the master CPU fault, the system can continue running on the standby CPU, or control of the system can be transferred back to the original master CPU. Annunciation of any control transfer is given through communication links

The MicroNet Plus control system incorporates an SNTP version 4 compliant timeserver that enables the control to be synchronized to less 
than 1 millisecond of any other external time source. Time stamping of sequence of events can be accomplished to 1 ms resolution on Discrete I/O and to 5 ms resolution on Analog I/O and software process variables.

Specifications

Operating Conditions 
Temperature 

0 to 55 °C (32 to 131 °F) ambient air temperature range 

Shock 

US MIL-STD-810C, method 516.2-1, procedure 1B (15 G, 11 ms half-sine pulse) 

Vibration 

Lloyd’s ENV2 test #1 

Regulatory Compliance 

North American: 

UL: UL Listed for Class I, Division 2, Groups A, B, C, & D, T3A  (UL File E156028) 

European Compliance for CE Marking: 

EMC Directive: 89/336/EEC: EN61000-6-2, EN61000-6-4 

Low Voltage Directive: 73/23/EEC: EN61010-1 

ATEX Directive: 94/9/EC: EN60079-15 (Zone 2, Cat. 3, Group II G, Ex nA [nL] IIC T3 X) 

Other European Compliance: 

Machinery Directive: 98/37/EC (compliant as a component) 

Marine Compliance 

ABS: ABS Rules 2006 4-9-7/Table 9 

DNV: Temp. Class A, Hum. Class B, Vib. Class B, and EMC Class A 

LRS: ENV1 and ENV2 

Technical Manual 26166 (2 volumes) 

MicroNet Plus Chassis 

All versions are bulkhead mounted or adaptable to 19” (483 mm) rack mount back panel. Designed for control room environment. 

MicroNet Plus with power supply section and 8 I/O slots 

Dimensions 

12.6” wide x 14.3” high x 12.1“ deep (320 mm wide x 363 mm high x 307 mm deep) 

Approximate Weight 

35 lb (16 kg) 

MicroNet Plus with power supply section and 14 I/O slots 

Dimensions 

18.8” wide x 14.3” high x 12.1” deep (478 mm wide x 363 mm high x 307 mm deep) 

Approximate Weight 

53 lb (24 kg) 

Power Supply Input Options 

18–36 Vdc, 100–150 Vdc, 88–132 Vac (47–63 Hz), 180–264 Vac (47–63 Hz) 

*Specifications apply to most components and modules. Some certifications may be pending. Contact Woodward for further information. Do not use the drawings in this specification for construction