GE s1300mark vie single-board controller
System Overview
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.
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.
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
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.
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)
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