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Installation
4.3.2
18
Connecting the cables
► If a protective conductor is provided or required for the pump,
connect the protective conductor to the terminal clamps of the
controller. When connecting the protective conductor, observe
then following points:
Make sure that the grounding contact is also connected to
–
the controller's mains supply side.
Each terminal may only be connected to a single
–
connecting wire (max 2.5 mm²).
The terminals are suitable for connection without sleeves;
–
stranded wires are to be twisted (1 twist per 20 mm).
► Only use the original temperature sensors (Pt1000) that are
approved for use with the controller.
► Observe the following points:
The polarity of the sensor contacts is not important.
–
Do not lay sensor cables close to 230 volt or 400 volt
–
cables (minimum separation 100 mm).
If inductive effects are expected, e.g. from heavy current
–
cables, overhead train cables, transformer substations,
radio and television devices, amateur radio stations,
microwave devices etc., then the sensor cables must be
adequately shielded.
Sensor cables may be extended to a maximum length of
–
100 m.
► When using extension cables, select the following cable cross
sections:
0.75 mm² up to 50 m long
–
1.5 mm² up to 100 m long
–
► Connect the cables in accordance with the terminal plan.
ASC02-01WM
EN2B-0365GE51 R0710
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