GE Energy Mark* VIe Control Product Description

12 C mechanical relays w/6 solenoids, coil diagnostics (115/230 V ac, 24/125 V dc) TRLYH1B 1 or 3 

12 C mechanical relays w/6 solenoids, voltage diagnostics (115/230 V ac, 125 V dc) TRLYH1C 1 or 3 

12 C mechanical relays w/6 solenoids, voltage diagnostics (24 V dc) TRLYH2C 

6 A mechanical relays for solenoids, solenoid impedance diagn. (24/125 V dc) TRLYH1D 1 or 3 

12 A solid-state relays/inputs (115/230 V ac) TRLYH1E 1 or 3 

12 A solid-state relays/inputs (125 V dc) TRLYH2E 1 or 3 

12 A solid-state relays/inputs (24 V dc) TRLYH3E 1 or 3 

36 mechanical relays, 12 voted form A outputs TRLYH1F 3 

 12 fused branches WPDFH1A 

36 mechanical relays, 12 voted form B outputs TRLYH2F 3 

 12 fused branches WPDFH2A 

10 AI (V/I inputs) and (2AO (4-20/0-200 mA outputs) TBAIH1C 1 or 2 or 3 

10 AI (V/I inputs) and (2AO (4-20/0-200 mA outputs) STAIH1A 1 or 2 or 3 

16 AO (4-20 mA outputs) 8 per I/O pack TBAOH1C 1 or 2 

8 AO (4-20 mA outputs) STAOH1A 1 

12 thermocouples TBTCH1B 1 or 2 or 3 

24 thermocouples (12 per I/O pack) TBTCH1C 1 or 2 

12 thermocouples STTCH1A 1 

16 RTDs 3 wires/RTD (8 per I/O pack) TRTDH1C 1 or 2 

8 RTDs 3 wires/RTD SRTDH1A 1 

6 serial ports for I/O drivers RS-232, RS422, RS485 SSCAH1A 1 

10/2 analog I/O - HART communications SHRAH1A 1 

PROFIBus communications SPIDH1A 1 

 I/O Type - Turbine Board 

Redundant 

Packs/Boards 

Mixed I/O: 4 speed inputs/pack, synchronizing, shaft V/I monitor TTURH1C 1 or 3 

2 servo channels: up to 3 coils, 4 LVDTs/channel, includes excitation TSVCH1A 1 or 3 

8 vibration (seismic, proximity, accel.), 4 position, 1 reference probe, buffered out TVBAH1A 1 or 2 or 3 

Controller

Features

• Single board including:

Main Processor

Control Network Communications - Ethernet

IO Network Communications – Ethernet

USB and COM ports

• Processor: Freescale 8349, 667MHz

• Operating system: QNX

• Base mounting

• Status LEDs

Environment

• Operating temperature 0°C to +65 °C 

• No fans required

Features

• Single board including:

Main Processor

Control Network Communications - Ethernet

IO Network Communications – Ethernet

USB and COM ports

• Processor: Freescale 8349, 667MHz

• Operating system: QNX

• Base mounting

• Status LEDs

Environment

• Operating temperature 0°C to +65 °C 

• No fans required

 Mark VIe Controller 

The single-board controller is a 

compact and flexible design for 

processing and network 

communications. 

The controller is a single board, which is base-mounted in the cabinet. For dual and 

triple redundant systems, a second and third board can be mounted adjacent for a 

compact packaging arrangement. An 8349, 667 MHz processor is provided with a 

QNX operating system. The board is powered by 18-36 V dc, 12 watt source. 

This rugged design is rated for an operating range of 0 to 65°C (32 to 149 °F) to 

match the maximum operating temperature of the I/O modules. Also, it does not 

require any cooling fans even at maximum temperature, and is suitable for NFPA 

Class 1, Div. 2 applications. 

Each controller has three 100 MB Ethernet drivers for the IONet, so that each 

controller can communicate with up to three network switches. In redundant systems, 

this allows each controller to monitor redundant inputs directly and compare them 

for any potential discrepancies. Connectors are color-coded and labeled to simplify 

maintenance. 

Controllers also have two Ethernet drivers for the control network to communicate 

peer-to-peer with other Mark VI, Mark VIe, and EX2100 generator excitation 

controls, as well as operator and maintenance stations. Controllers can be 

synchronized between units or to a local or remote time source for accurate plantwide sequence of events monitoring. 

Switches manage the 

communication traffic to 

eliminate collisions and 

increase network determinism 

Communication between the controller and the I/O packs is performed with the 

internal IONet. This is a 100 MB Ethernet network available in non-redundant, dual 

redundant, and triple redundant configurations. Ethernet Global Data (EGD) and 

other protocols are used for communication. EGD is based on the UDP/IP standard 

(RFC 768). EGD packets are broadcast at the system frame rate from the controller 

to the I/O packs, which respond with input data. 

IONet conforms to the IEEE 802.3 standard. It is supplied as 100BaseTx and 

100BaseFx (fiber) for greater distances, noise rejection, lightning immunity, and 

ground immunity. A star topology is used with the controller on one end, a network 

switch in the middle, and I/O packs at the end

Maximum IONet Distances Including Field Devices 

Industrial grade switches are used for the IONet that meet the codes, standards, 

performance, and environmental criteria for industrial applications including an 

operating temperature of -40°C to 85°C (-40 °F to 185 °F) and Class 1, Div. 2. 

Switches have provision for redundant 10 to 30 V dc power sources (200/400 mA)