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Technical Information
Chapter
7
HC8X Heat Control
Retrofitting / Conductor Bar Configuration
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SICK AG · All rights reserved
7-39
4.
Plug in all wires, as shown in the example (Chapter 7.1.1 Retrofitting the HC8X with an
Even Number of Channels, page 7-36).
5.
Check the correct assignment and firm seating of all connections.
6.
Connect the respective PT100 temperature sensor to the terminal strip X10 (see
Chapter 3.4 Connecting the Temperature Sensors, page 3-23).
7.
Connect the respective heating circuit to the plug-in block terminal (included in the ret-
rofit kit) X1–X9 (see Chapter 3.3 Connecting the Heating Circuits, page 3-22).
8.
Configure/address the respective power channel (see Chapter 4 Configuration and Ad-
9.
Connect the ground line with flat plug contact in the case cover and check correct seat-
ing.
10. Close and screw on the case cover.
11. Connect the supply voltage to all poles.
12. Put the HC8X in operation (see Chapter 5 Start-up, page 5-31).
7.2
Configuring the Power Bars
Danger of electrical shock!
Do not touch live parts.
Disconnect all poles of the power section and control section from the supply voltage
before opening the case.
Check whether the power section and the control section are free from voltage.
Change the outer conductor connections only on the L1, L2 or L3 conductor bars.
Changing the outer conductor connections on the conductor bars (see Fig. 7-4, page 7-40)
allows for a symmetrical load distribution on all three phases of the power supply.
Note
Determine the values of the heating circuit current before changing the existing conductor
bar configuration. The total of all individual currents of the heating circuit per phase may not
exceed the maximum back-up fuse value of the power electronics.
1.
Unscrew two screws from the case cover.
2.
Remove the case cover and pull off the ground conductor.
3.
Pull the respective wire (white) from one of the outer conductor bars and plug it onto
the desired outer conductor bar.
4.
If necessary, change other wires (white) in the same manner.
5.
Connect the ground line with flat plug contact in the case cover and check correct seat-
ing.
6.
Close and screw on the case cover.
7.
Connect the supply voltage to all poles.