Technical Information
Chapter
3
HC8X Heat Control
Electrical Installation
8010043
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SICK AG · All rights reserved
3-23
3.3.3
Connecting Three-Phase Heating Circuits
Connect the 3-phase heating circuit to three adjacent terminal blocks, e.g. X6 (channel 6),
X7 (channel 7) and X8 (channel 8):
1.
Connect wires according to Table 3-4.
2.
Insert terminal block into the respective plug-type terminal and check firm seating.
Note
3.
In this example, connect the temperature sensor (PT100) to plug-type terminal strip
X10, terminal No. 11/12. Controlling channel = channel 6.
Table 3-4: Pin Assignment of Three-Phase Heating Circuits
Wire No.
Term. Block
Pin/Term.
Signal
Function
1
X6
1
L1
6th power output 115 V/230 V, 50
–
60 Hz
2
X6
2
N
Neutral conductor
PE
X6
3
PE
Protective conductor
3
X7
1
L2
7th power output 115 V/230 V, 50
–
60 Hz
–
X7
2
N
(Neutral conductor)
–
X7
3
PE
(Protective conductor)
4
X8
1
L3
8th power output 115 V/230 V, 50
–
60 Hz
–
X8
2
N
(Neutral conductor)
–
X8
3
PE
(Protective conductor)
3.4
Connecting the Temperature Sensors
Observe the assignment of the temperature sensors (PT100)!
When the assignment of the temperature sensor (PT100) to the controlling channel is
wrong, the control function does not operate correctly.
Determine the controlling channel when multi-phase heating circuits are connected.
Always connect the temperature sensor (PT100) of the controlling channel.
1.
Pull the terminal blocks out of the plug-type terminal strip, starting with No. 1/2 for chan-
nel 1.
2.
Connect the wires of the temperature sensors to the terminal block of plug-type termi-
nal strip X10.
3.
Insert the terminal block in plug-type terminal strip X10 and check firm seating.
