FLYGT APP700, Руководство по установке

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Connect the Power Supply
Precautions
Always apply the following precautions when connecting the power supply:
• Protect the power supply to the RTU with a dedicated external fuse
• Use separate phase/neutral conductors for the power supply from the electrical
distribution box.
• Apply electrical noise filters to components which generate electrical noise
Do not
• use the same power supply as for contactors or other items of equipment
• run the cable in a cable duct together with power supply cables to contactors
• run signal cables and power cables in close proximity
Instruction
Follow these steps to connect the power supply.
Table 10
Step Action
1 Connect 24V DC power supply to terminal 51–52.
2 Connect functional earth (ground) to terminal 49.
Note! The earthing cable should be as short as possible.
External power supply
Terminal 51-52 is used for input of an external power supply at 24V DC, -15% + 20%.
The RTU will back up settings and trends during a power loss; however, if UPS
(Uninterruptable Power Supply) functionality is required then this must be installed in a
way that provides continuous power to the 24VDC supply. The 24VDC supply to the RTU is
rectified and used to drive the analog and digital signals.
Earthing (grounding)
Overvoltage protection should preferably be connected to a separate grounding terminal,
such as an ground rod, although it may sometimes be sufficient to connect them to the
earth (ground) bus bar in the panel.
The conductor area of the cable between the overvoltage protection and earth (ground)
should be 6-10 mm
2
.
Connect the Power Supply
16 Hardware for APP700 and APX700 Installation