事業案内

SERVICES

Frequently Asked Questions

FAQ List

About technical know-how

  • Q.
    What is "HMI"?
    A.
    It is the abbreviation for "Human Machine Interface" which means the boundary of exchanging information between man and machines.
    Touch panel and PC are used for supervising or controlling equipments in industries.
  • Q.
    What is "SCADA"?
    A.
    It is the abbreviation for "Supervisory Control And Data Acquisition", a kind of HMI which performs the equipment surveillance and the process control by computers.
    Recently, the systems which adopted SCADA using a cheap PLC instrumentation and a general PC are increasing in number at the process plants mainly using DCS.
  • Q.
    What package of SCADA is often used?
    A.
    "iFIX" of GE Intelligent Platforms, "JoyWatcher" of JT engineering, "InTouch" of Wonderware and so on. What is more, "RS-View32" of Rockwell, "ASTMAC/VDS" of Yokogawa Electric and "Citect" of Shneider can be used.
  • Q.
    What kind of thing is there in the basic function of SCADA?
    A.
    There are a graphic screen which displays and supervises the equipment graphically, an alarm function which supervises the alarms, a trend function (data logging) which indicates the process value, a control group function, a list function and so on.
    It is possible to refer to the past history regarding alarms and trend.
  • Q.
    What kind of PLCs and controllers is there the connection track record with?
    A.
    Q series of Mitsubishi (Instrumentation is included), CS1/CJ1 series of OMRON (Instrumentation is included), SX series of Fuji Electric, FA-M3, STARDOM, and FCN of Yokogawa Electric and so on.
  • Q.
    What is the important point when building a SCADA/HMI system?
    A.
    Needless to say, the clients' use and demand are filled. Moreover, the convenient functions which the client does not notice are proposed.
    A simple system that is easy to use and has sufficient functions is offered.
  • Q.
    Is redundant structure possible?
    A.
    As for iFIX, InTouch, JoyWatcher, VDS, Citec, etc, they can be take server duplication (redundancy).

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About control panel

  • Q.
    How are the design and the manufacture conducted?
    A.
    We design in the company, and after receiving clients' approval, we consign manufacturing to the supporting companies.
  • Q.
    How the quality control to the manufacture contractors is conducted?
    A.
    A.Only subcontractors who can meet our quality, cost and time for delivery demands are dealt with.
  • Q.
    What is important for designing?
    A.
    A demand of a client is grasped firmly to make a good proposal.

About sheet metal & paint

  • Q.
    Is there any paint which does not deteriorate easily?
    A.
    There are salt-proof, acid-proof paint and so on.

About a measure against a noise

  • Q.
    There are malfunction by a noise sometimes.
    A.
    Power wiring and control wiring are intermingled in the electric construction. The leads are wired in parallel and electric current flows to the one, then voltage is induced to the other lead. It makes a noise. This is called an electromagnetic induction noise.
  • Q.
    What kind of method is there as a measure which cannot be easily influenced by a noise?
    A.
    As for the previous electric construction, it is effective to separate the grounds for instrumentation and for power.
    If it is a measure for a panel, there is a method of using the apparatus of a noise filter or a noise cut transformer, or making wiring a shield line and a twist line.
  • Q.
    What kind of other noises are there?
    A.
    There is a noise by grounding. Electric current flows to a ground and voltage occurs in a grounding terminal by grounding resistance, and it may become a source of a noise. Dividing and installing the grounds for instrumentation and for power is recommended.
    Moreover, there is an electrostatic induction noise.

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About making documents

  • Q.
    What kind of documents do you make?
    A.
    An operation procedure document may be made.
  • Q.
    What languages are used in the document?
    A.
    Mainly in Japanese, but it is written in English, Chinese, and Taiwanese depending on the clients' request.