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Model 7 Brochure

Pattern Design

Screen Shots

TC3000 - Model 7  

Here Bill Otto is shown with the portable keyboard/display terminal that has been used in all 200 previous control systems installed over the past 12 years. All new systems are downward compatible both from use and functionality of this terminal. The terminal is connected to the computer via a long cable such that its position can be in close proximity of a fixer (running diagnostic programs), as well as the operator at the machine.

These same functions and displays are operational via the computer keyboard and color monitor, with obvious additional features available with the color monitor, displaying additional information, patterns, for example.

As mentioned, the portable keyboard/display functions are the same as older models, but also old pattern (diskette) files; older patterns will run on the newer control systems. The portable terminal functions are also operational via the computer keyboard / monitor.


From the rear of the cabinet, the back of the monitor is shown in the top, then the computer, then the interface card rack – cables can be seen at the top of the cabinet. These connect the circuits in the interface card rack to the solenoids on the machine.

Some systems have a servo system under the interface card rack (not shown here) that controls a servo motor on the machine. The servo system operates in sync with the rug pattern such that the backing is advanced in fixed steps. The backing motion begins on the needle upstroke when the needles clear the backing, with motion completion before the needles reenter the backing on the downstroke. The step distance is part of the pattern, and determines the stitch count, as well as eliminating backing motion when the needles are in the fabric.

In the bottom are power filtering, isolation and regulating components. The coil of cables at the bottom connect to position sensors on the machine.

An air system can be seen on the rear door.

  Industry standard Euro Cards and racks are used. Each rack holds up to 20 solenoid interface pc boards, with 64 output circuits per board, resulting in control capability of 1,280 output signals per rack. The cabinet can hold 4 racks (extensions can be added) for a total per cabinet of 5,120 control outputs. We currently have a system quoted with over 14,000 outputs.

The (coiled) ribbon cable shown is connected to the back of the card rack and has a machine wiring interface at the other end, depending upon the application. In this case, there is a solenoid interface pc board with a terminal strip to which machine solenoid wires are terminated.

  The solenoid interface pc board connector pins come through the card rack backplane and the ribbon cable connects directly to the solenoid interface pc board connector, thus reducing the number of connections and in turn enhancing connection reliability.
  The front of the solenoid interface pc board has 64 red LEDs in series with 64 corresponding solenoids, and only illuminate when each corresponding solenoid is drawing current. Hence, the LED is a true indication of computer, circuit, and machine wiring integrity. The solenoid output circuits are fused on the pc board so as to protect against both solenoid and machine wiring faults; fuses plug into pin sockets for easy replacement. Fusing other than on the pc board may not give complete protection. On the pc board end plate is a number next to each LED for identification. The illumination pattern of all pc boards is seen through a smoked glass front panel.

Any pc board plugs into any slot in the rack. Each pc board has an on-board power supply (regulator/rectifier) for both the pc board power and solenoid power, so as to eliminate the need for two large power supplies that could take out the entire system.

  A (programmable) control pc board in each card rack allows configuration of the rack to the specific machine. Some machines have multiple controls per yarn end, such as high/low plus cut/uncut. Two control outputs are needed per yarn end, and these outputs can be mapped on this board.
  This picture shows floor mats coming off a production Colortec machine controlled by a model 7 CES controller.

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