GE SPEEDTRONIC Mark VIe Turbine Control System

Description 

The Mark* VIe control system is a flexible platform used in multiple applications. It features high-speed, networked input/output (I/O) for simplex, dual, and triple redundant systems. Industry-standard Ethernet communications are used for I/O, controllers, and supervisory interface to operator and maintenance stations, as well as third-party systems. The ControlST* software suite, which contains the ToolboxST* toolset, is used with Mark VIe controls and related systems for programming, configuration, trending, and analyzing diagnostics. It provides quality, time-coherent data in the controllers and at the plant level for effectively managing control system equipment. The Mark VIeS Safety control is a stand-alone safety control system for safety-critical applications that conform to IEC®-61508. It also uses the ControlST software suite to simplify maintenance, but retains a unique set of certified hardware and software blocks. The ToolboxST application provides a means to lock or unlock the Mark VIeS for configuration and safety instrumented function (SIF) programming.

A single-board controller is the heart of the system. The controller includes the main processor and redundant Ethernet drivers to communicate with networked I/O, and additional Ethernet drivers for the control network. A real-time, multi-tasking operating system is used for the main processor and I/O modules. Control software is provided in a configurable control block language and stored in non-volatile memory. It is similar to IEEE® 854 32-bit floating-point format, and Sequential Function Charts (SFC) are also available for complex sequencing.

The I/O network (IONet) is a dedicated, full-duplex, point-to-point protocol. It provides a deterministic, high-speed 100 MB communications network that is suitable for local or distributed I/O devices, and provides communication between the main controllers(s) and networked I/O modules. Online controllers continuously read input data directly from the IONet, which is available in single, dual, and triple redundant configurations. Both copper and fiber interfaces are supported.

The Mark VIe I/O modules consist of three basic parts: the terminal board, the terminal block, and an I/O pack. Barrier or box-type terminal blocks are mounted on a terminal board, which mounts on a DIN rail or base in the control cabinet. The I/O pack contains two Ethernet ports, a power supply, a local processor, and a data acquisition board. I/O capability grows as I/O packs are added to the control system, enabling use in a simplex, dual, or triple redundant configuration. Some process sub-systems require even more throughput; therefore, the local processors in each I/O pack run algorithms at higher rates as required for the application.

REDUNDANCY：

Every application has different requirements for redundancy depending on the criticality of the process. The Mark VIe control system provides a wide range of redundancy options for local and remote distribution.

Dual redundant systems transmit inputs from single or redundant input packs on dual IONets to dual Mark VIe controllers. Controllers then run application software and transmit outputs to output packs. Three output I/O packs may be provided to vote output signals for mission-critical field devices. Dual redundant systems may be configured for single, dual, and triple redundant sensors.

Triple redundant systems protect against soft or partial device failures. A failed component is outvoted with a 2-out-of-3 logical selection (vote) or a median value selection. Control software in all three Mark VIe controllers runs on the voted value of the signal while diagnostics identify the failed device. These sophisticated diagnostics reduce the mean-time-to-repair (MTTR) while the online repair capability increases the mean-timebetween-forced-outages (MTBFO). Field sensors for these systems may be single, dual, or triple.

I/O INTERFACE：

One or multiple I/O packs are mounted on each module to digitize the sensor signal, run algorithms, and communicate with a separate controller containing the main processor. I/O packs have a local processor board that runs a real-time operating system and a data acquisition board that is unique to the specific I/O application. Local processors run algorithms at faster speeds than the overall control system, such as the regulation of servo valves performed within a servo module. Each I/O processor has a local temperature sensor accurate to ±2°C (±3.6 °F). Detection of an excessive temperature generates a diagnostic alarm and the logic is available in the database (signal space) to facilitate control action or unique process alarm messages. The temperature is continuously available in the database. I/O module features include:

• Dual 100 MB Ethernet ports
• 100 MB full-duplex ports
• Online repair per I/O pack
• Automatic reconfiguration
• Accuracy is specified over full operating temperature
• Internal temperature sensor
• LEDs:
- Power status and attention
- Ethernet link-connected and
communication-active
- Application-specific
• 28 V dc power
• Internal solid-state circuit breaker and soft start

A power supply provides a regulated 28 V dc power feed to each I/O pack. The negative side of the 28 V dc is grounded through the I/O pack metal enclosure and its mounting base. The positive side has solid-state circuit protection built into the I/O pack with a nominal 2 A trip point. Online repair is possible by removing the 28 V dc connector, replacing the I/O pack, and re-inserting the power connector. I/O packs are automatically reconfigured if the Auto-Reconfiguration feature is enabled.

TERMINAL BLOCKS：

Signal flow begins with a sensor connected to a terminal block on an I/O module. The terminal board mounts to the cabinet and is available in two basic types: T-type and S-type modules.

T-type modules typically fan the inputs to three separate I/O packs. They contain two removable 24-point, barrier-type terminal blocks. Each point can accept two 3.0 mm2 (#12,AWG) wires with 300 V insulation per point and spade or ring-type lugs. Captive clamps are also provided for terminating bare wires. Screw spacing is 9.53 mm (0.375 in) minimum, center-to-center. T-type modules are normally surface mounted, but may also be DIN-rail mounted.

A shield strip is provided next to each block, which is actually the left-hand side of the metal base where the module is mounted. Wide and narrow modules are arranged in vertical columns of high and low-level wiring that can be accessed from top and/or bottom cable entrances. An example of a wide module is a module containing magnetic relays with fused circuits for solenoid drivers.

S-type modules provide a single set of screws for each I/O point and allows a single I/O pack to condition and digitize the signal. This board is used for simplex, dual, and dedicated triple modular redundant (TMR) inputs by using one, two, or three boards. They are half the size of T-type modules and are DIN-rail or surface mounted. Two versions of the S-type modules are available: fixed terminal blocks and removable terminal blocks.

Fixed box-type terminal blocks accept one 3.0 mm2 (#12 AWG) wire or two 2.0 mm2 (#14 AWG) wires with 300 V insulation per point. Screw spacing is 5.08 mm (0.2 in) minimum, center-to-center. Removable box terminals may be replaced with spring-cage-clamp, insulation displacement, or crimpand-stab terminals. A shield strip is provided on each terminal block and is tied to functional ground.

TEMPERATURE RATINGS：

Mark VIe electronics are packaged in different locations world-wide and customized for a variety of protection classifications with and without ventilation and cooling. Controllers, I/O modules, power supplies, etc. are rated for -30 to 65°C (-22 to 149°F) at the electronics. To compliment the Mark VIe Control’s native I/O modules, a variety of fieldbus solutions are available with master communication gateways on the I/O network. These modules have slightly reduced operating temperature ratings:

• PROFIBUS® Master Gateway: -20 to 55°C (-4 to 131°F)
• CANopen® Master Gateway: -20 to 55°C (-4 to 131°F)
• FOUNDATION Fieldbus™ Linking Device: 0 to 55°C (32 to 131°F)

Modules with reduced operating temperatures should be mounted lower in the cabinet to avoid the natural temperature gradient from the bottom to the top of the enclosure. Control room equipment such as operator stations has an operating temperature range of 20 to 30°C (68 to 86°F). For shipping and storage, the controllers, I/O modules, power supplies, etc. are rated -40 to 85°C (-40 to 185°F), and control room equipment is rated 0 to 30°C (32 to 86°F).

I/O MODULES：

I/O modules can be categorized as generic and application-specific. As an example, discrete inputs (contact inputs) are used in virtually all applications and differ primarily in their voltage rating. Other considerations in selecting a module are its redundancy, isolation (group or point), terminal block type, availability for safety applications (IEC 61508), and approval for hazardous locations.

A typical application-specific module is a servo module that is used for fast closed-loop control of a turbine’s servo valve actuator or a complete emergency over-speed trip system for a turbine. These unique modules will not be described in the following tables. However, some applicationspecific modules such as a vibration module is commonly applied in monitoring radial and axial shaft displacement of rotating machinery in plant distributed control systems and will be described in a separate table.

Stock part list:

IS220PPRFH1B
IS220PAICH1A
IS220PAICH1B
IS220PAICH2A
IS220PAOCH1B
IS220PDIAH1A
IS220PDIAH1B
IS220PDIOH1B
IS220PDOAH1A
IS220PIOAH1A
IS220PPRAH1A
IS220PPROH1A
IS220PSCAH1A
IS220PTCCH1A
IS220PTURH1B
IS220UCSAH1A
IS220YAICS1A
IS220YDIAS1A
IS220YDOAS1A
IS220YTURS1A
IS230JPDGH1A (IS200JPDGH1ABC)
IS230SDIIH1A (IS200SDIIH1ACB)
IS230SDIIH1A (IS200SDIIH1ADB)
IS200STCIH4ADD
IS230SNAIH2A (IS200STAIH1ABB)
IS230SNAOH2A (IS200STAOH2AAA)
IS230SRLYH2A (IS200SRLYH2AAA)
IS230STAOH2A(IS200STAOH2AAA)
IS230STTCH2A
IS230TBAOH2C (IS200TBAOH1CCB)
IS230TDBTH2A (IS200TDBTH2ACD)
IS230TNDSH2A (IS200TDBSH2ACC)
IS420ESWBH3A
IS400AEBMH1AJD
IS410SRLYS2A
IS410SRLYS2A (IS400SRLYS2ABB)
IS410STAIS2A (IS400STAIS2AED)
IS410STCIS2A (IS400STCIS2AFF)
IS415UCCCH4A
IS200SRTDH2ACB
IS420ESWBH3AE
IS420PPNGH1A
IS420UCECH1B
IS420UCSBH1A
IS420UCSCS2A
IS420YAICS1B
IS420YDIAS1B
IS420YDOAS1B
IS420UCSBH4A
IS420UCSBH3A
IS220PRTDH1A
IS220PTURH1A
IS220PPDAH1A
IS220PDIOH1A
IS220PSVOH1A
IS220PPDAH1B
IS220PAOCH1A
IS2020RKPSG2A
IS2020RKPSG3A
IS210AEAAH1B
IS210AEAAH1BGB
IS210AEACH1ABB
IS210AEBIH1BED
IS210AEPSG1A
IS210BPPBH2C
IS210BPPBH2CAA
IS210MACCH1AFG
IS210MACCH1AKH(IS200WEMDH1ABA）
IS210TREGH1B
IS220PSVOH1B
IS220PVIBH1A
IS220PPROS1B
IS220PDIIH1B
IS220PTCCH1B
151X1235BC01SA01
IS420UCSCH1A
IS220PRTDH1B
IS220PSCHH1A
IS220YSILS1B
IS220PPRFH1A
IS220PDOAH1B
IS420CCGAH2A
IS200TTURH1C
IS230TNTRH1C (IS200TTURH1CFD)
IS230TNAIH2C (IS200TBAIH1CED)
IS400TRLYS1BJJ
IS410TRLYS1B (IS400TRLYS1BJJ)
IS230SNSCH2A (IS200SSCAH2AGD)
IS220PSCAH1B
IS230SNAIH2A (IS200STAIH2ADC)
IS420UCSCH1B
IS400TBCIS2C
IS410TBCIS2C (IS400TBCIS2CEE)
IS420UCPAH2A
IS200TICIH2ACB
IS210AEDBH3ADC
IS200ECGIH1APR1
IS420ESWBH1A
IS420ESWAH3A
IS200TTURH1CCC
IS200TBTCH1BBB
IS200TSVCH1ADC
IS220PCLAH1A
IS200SPROH1ABC
IS200SPROH1ABB
IS420CCGAH2A-C
IS420PUAAH1A
IS215UCCCH4A
IS220PSFDH1A
IS410JPDHG1A (IS400JPDHG1ABB)
IS230TRLSH2B (IS200TRLYH1BGG)
IS230TCISH6C (IS200TBCIS2CCD)
IS230TAISH2C (IS200TBAIS1CED)
IS420UCSBS1A
IS200TRTDH1D
IS220PCLAH1B
IS220PHRAH1B
IS200TSVCH1AED
IS230TRLYH1B
IS230PCAAH1A
IS200EPBPG1A IS200EPBPG1ACD
IS210SCSAS1A (IS200SCSAS1AEB)