Year: 2025

Benefits

Designed by experienced process engineers and dedicated to process applications, the 8000 I/O is simple to use-saving money and delivering value:

Lowest Cost Field Installation

The 8000 I/O replaces terminal blocks in the field junction box; sensors and actuators connect directly to the IO terminal blocks.

Single or redundant twisted-pair or fiber-optic cables replace multi-core cables in the control room, significantly reducing installation costs.

Cost savings can only be realized with field installations provided by the stable 8000 I/O.

Expandable

The 8000 I/O is perfectly suited for any operation with more than 8 I/O points. It is compatible with all controllers, from PLCs and PC-based systems to large DCS devices.

Low Cost of Ownership

– Hot-swappable, no downtime

– Automatic addressing – I/O can be removed and replaced without reprogramming

– Field wiring for direct I/O connection Field wiring terminals – no need for external wiring terminals

Field Installation of I/O

Today, engineers can install I/O anywhere in the field, saving money without sacrificing reliability.

The use of field-mounted I/O and open networks significantly reduces wiring costs while allowing access to needed diagnostic data.

The 8000 I/O System solves all practical problems so you can install the I/O bus on your equipment.

What is the 8000 I/O System?

The 8000 I/O System is a field installable I/O system that replaces the field junction box. It allows a group of any type of field device to be connected to a single network node.

These I/O nodes can then be connected together to create a fast, powerful and open I/O system.

Field Terminals

Field terminals provide the connection between the I/O module and field wiring. They include optional fuses and circuit breakers. Mechanical keying systems prevent misconnection of I/O modules by the type of field terminals. Field terminals are mounted on the module base plate, one for each I/O module. These terminals are securely clamped to the I/O module and form a highly integrated electrical and mechanical assembly. Field terminals can be replaced during operation without removing the base plate and without interfering with the operation of other modules.

Base Plate

Mounted on flat or T or G DIN rails, base plates form the physical and electrical backbone of the 8000. supporting and connecting bus interface modules, power supplies, I/O modules, and field terminals, and supporting the internal Railbus address, data, and power lines. They provide terminals for LAN and field wiring shielded cables and can distribute bus field power to I/O modules. The I/O module backplane can support 4 or 8 I/O modules.

Power Supplies

Good power management is at the heart of a truly distributed I/O system. 8000 power supplies receive local unregulated power and then provide regulated power to the bus interface modules and I/O modules. Power redundancy is supported.

Bus Interface Module (BIM)

The BIM provides a serial data connection to a host controller, which can be a distributed control system (DCS), a programmable logic controller (PLC), or a PC running a software control package. with the BIM, you can adapt to the most common fieldbus protocols. At the same time, the BIM uses a fast internal bus for data transfer to I/O modules. You can control up to 32 I/O modules with just one BIM per node.

OVERVIEW

All I/O modules are connected to the high-speed Bus Interface Module (BIM) via a proprietary bus system called “Railbus”.

Up to 32 modules can be connected to one BIM. The module backplane provides the transmission medium for the Railbus.

At the same time, the modules can be connected to the bus by plugging them into the base plate. The connectors on the base plate also provide the power supply for the modules and, if necessary, for the field wiring.

Addressing of I/O modules

Modules are addressed by the bus interface module according to their location or slot and by combinations of 32 modules rather than individual module types.

Modules can therefore be removed and replaced by another module of the same type without “informing” the Bus Interface Module.

During the configuration process, the Bus Interface Module is informed of the location characteristics of each required module, regardless of whether the module is present at the time.

Therefore, if a module is replaced, the attributes of that “slot” remain with the bus interface module.

Critical modes

Output fail-safe mode

The output module can enter a fail-safe state. The module will enter this state if either of the following two reasons occur.

(1) The BIM forces the module into a fail-safe state by issuing a special command.

(2) The module has a configurable “timeout” parameter. This allows you to specify a maximum amount of time that communication with the BIM will cease.

Once this time is exceeded, the module will go to a fail-safe state. Different types of modules respond to fail-safe commands in their own ways, which are described separately in the following sections.

Product Description The IC200MDL643 Discrete Input Module is a 5/12 Vdc Versamax positive/negative logic input module from GE Fanuc.

It has 2 sets of 16 inputs with 0 to 15 volts DC and an input impedance of 2.4 kilohms.

The IC200MDL643 Discrete Input Module is a GE Fanuc Versamax 24 Vdc rated positive/negative logic input module with 16 inputs in 2 groups.

The inputs support both positive and negative logic. Positive logic inputs send current to the common and negative logic inputs do the opposite, receiving current from the common.

Inputs with negative logic configurations are compatible with TTL devices. The backplane provides all power for module operation.

The IC200MDL643 discrete input module provides 16-bit discrete input data. The device has a typical input impedance of 2.4K ohms at 12 volts DC.

The IC200MDL643 discrete input module has a minimum on-state current of 1.45 mA and a minimum off-state current of 0 to 0.7 mA.

On and off response times are up to 0.25 ms. It also provides three configurable input filtering times to compensate for the 0.25 ms, 0.5 ms, and 0.5 ms on/off response times.

It also provides three configurable input filtering times to compensate for noise spikes and switching jumps of 0.25 ms, 1.25 ms, and 7.25 ms. Two input groups have a common connection point.

One group can be wired for positive or negative logic. If the system requires additional bus terminals.

A shorting bar with 2 amps of current-carrying capability is also available for use with the B-terminal.

The IC200MDL643 discrete input module has an input voltage of 0 to 15 volts DC and a user input current of 1.8 milliamps at 5 volts DC and 4 milliamps at 12 volts DC.

The user input current is 1.8 mA at 5 volts DC and 4.9 mA at 12 volts DC. It has no thermal derating and no external power supply.

During installation, make sure that hot plugging and unplugging is done correctly to avoid backplane interruptions.

Operation:

The VSVO provides four channels including bi-directional servo current outputs, LVDT position feedback, LVDT excitation, and pulse rate flow inputs.The TSVO provides excitation for, and accepts inputs from, up to six LVDT valve position inputs. One, two, three, or four LVDTs can be selected for each servo control loop, and if three inputs are used, they can be used for gas turbine flow measurement applications. These signals are transmitted through the TSVO and sent directly to the front of the VSVO board at J5. Each servo output is equipped with a firmware-controlled, independent suicide relay that short-circuits the VSVO output signal to common in the event of a power failure and returns it to the nominal limit when a manual reset command is issued. Diagnostics monitor the output status of each servo voltage, current, and suicide relay.

Description:

General Electric’s IS200TSVOH1BAA circuit board assembly is part of the company’s Mark VI turbine control system. The Mark VI has been monitoring and controlling industrial turbine systems for decades. Meanwhile, Speedtronic systems have been in use since the late 1960s.

This IS200TSVOH1BAA is used as a servo valve termination board. While MKVI systems use many different termination boards, this particular board is a barrier type board that uses screws to clamp the wire connections. When connecting wires to the terminals, it is important to strip the wires to the correct length; otherwise, the screw clamps will be difficult to access.

This IS200TSVOH1BAA has two termination blocks located on one side of the board. Other connectors used on the board include d-shell connectors and vertical plugs. The board has six jumper switches that can be used to change the way a particular circuit works. Each jumper switch on the board has multiple settings. Before removing a jumper from the unit, be sure to make note of the way the jumpers were set on the previous board; best practice suggests duplicating these settings on the new assembly.

Other board components include relays, transformers, ICs, and transistors. For more information on these components and how the board should be located, wired, installed, and maintained, refer to the GE Speedtronic manual.

The IS200VSVOH1B is a VME servo control board manufactured by General Electric as part of the Mark VI series used in gas turbine control systems. The four electrohydraulic servo valves that operate the steam/fuel valves are under the direction of the servo control (VSVO) board. Typically, two servo terminal boards are used to separate these four channels (TSVO or DSVO). The valve position (LVDT) is determined using a linear variable differential transformer.

The VSVO performs a cyclic control algorithm. Three cables are connected to the VSVO at the J5 plug on the front panel and at the J3/J4 connectors on the VME rack. the JR1 connector is used for the

TSVO to provide simplex signals, while the JR1. JS1 and JT1 connectors are used to fan out TMR signals. The external trip of the protection module is inserted into JD1 or JD2.

IS200VSVOH1B Installation

Close the VME’s processor rack.

Place the board in place, then hand press the top and bottom ties into the base of the edge connector.

Tighten the plus screws at the top and bottom of the front panel.

The cable connections to the TSVO terminal board are made at the lower J3 and J4 connectors of the VME rack. They are locking the connections in order to secure the cables. Start the VME rack and check the diagnostic indicators on the front panel.

IS200VSVOH1B Operation

LVDT position feedback, LVDT excitation, bi-directional servo current outputs, and pulse rate flow inputs are contained within the four channels of the VSVO.

The TSVO can provide excitation for up to six LVDT valve position inputs, and the TSVO accepts inputs from them as well. For each servo control loop, one, two, three or four LVDTs can be selected.

For applications measuring gas turbine flow, three inputs are provided. These signals are routed through the TSVO and sent directly to J5 on the front of the VSVO board. when power is lost, each servo output has a dedicated suicide relay which, when controlled by firmware, short-circuits the VSVO output signals to common and then returns to normal operation after a manual reset command.

Each servo’s output voltage, current, and suicide relay are monitored through the diagnostic function.