Installation
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5
If the over-temperature protection is connected to a digital input, the wires have to be removed from
the terminal X52. The I/O wiring has to be connected to the terminals 1 and 4 on the terminal X52,
see Appendix 80. If the over-temperature protection is connected to the I/O of the Active Front End
unit, it can be programmed. The parameter P2.2.1.3 has to be set to choose the digital input to which
the over-temperature monitoring is connected. The parameter P2.7.3 allows one to select the
response to an over-temperature alarm as wanted.
If the over-temperature protection is connected to the DC/DC power supply, the jumper has to be
removed from the terminal X3. The cable from the terminal X52 should be connected to the terminal
X3. By default, the jumper is connected to the terminal X3, see Figure 45. The delivery includes the
cable for connecting the terminals X52 and X3. The wiring diagram can be seen in Appendix 80. If
over-temperature monitoring is connected to the DC/DC power supply, the Active Front End unit
will monitor over-temperature. The response to an over-temperature alarm cannot be selected. In
this case, the over-temperature fault message will be same as the fan fault of the unit. On the
keypad, the fault “32 Fan Cooling” will be shown.
Figure 44. Integrated DC/DC-power in the FI9 and FI10 LCL filter
Содержание NX Active Front End
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