Automation Equipment and Instrumentation
Control and instrumentation can be defined as subproducts for measuring, sending messages, controlling, and regulating. These are installed locally in each system, in the installation as a whole, or in the control technical room.
SHI TABLE 9.7 Important Information and Requirements for Control and Instrumentation
Power supply to buildings 3-phase 400 VAC ±10% 50 Hz
Type of control Data-based controller (DDC)
Input and output modules 0(2)—10 VDC or 0(4)—20 mA
Climate surroundings 0 to +50 °C and 1 0 to 90% relative humidity
Electronic norms/requirements IEC 60364/CENELEC HD384
Level of encapsulation IP54 (local components)
To ensure flexibility for possible later additions or changes, the instrumentation has to be selected based on standardized subproducts using national or international norms. These standards are mainly based on the measuring areas and signal types. Typical signals for input and output to the data-based controller (DDC and PLC) are
• Measuring and control signals as 0-10 VDC, 0(4)-20 mA, or 0.2-1 bar
• Sensors with receptor of thermal element, platinum or nickel (Pt 100, Pt 1000, Ni 1000)
Other important parts of the instrumentation are
• Local electromagnetic and pneumatic components, damper, and valve actuators
• Fuses, relays, and contactors for control of pumps, fan, light, energy, etc.
• Electrical safety
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