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3.3 Establishing the electrical connections
Danger
Risk of death by electrocution! Make sure that the following conditions are satisfied
when performing the work described in this section:
• All cables leading to the controller must be disconnected from the power supply and
it must be ensured that they cannot be unintentionally reconnected during installa-
tion.
• Each connection terminal must only be connected to a single conductor.
• The protective earth conductors (PE) from the mains cable and pump and valve
cables must be connected to the protective earth conductor terminal block.
• All cables must be laid so that persons cannot stand on them or trip over them.
• The cables must satisfy the requirements listed in Section 14.2, p. 51.
• The local power supply must match the specifications on the type plate of the con-
troller.
• The power supply cable is to be connected to the mains power as follows:
– using a plug connected to a wall mains socket or
– via an isolating mechanism allowing complete isolation in the case of permanent
wiring.
• The power supply cable must be laid in conformance to all applicable legal guide-
lines and regulations of the local electricity supplier.
Caution
Danger of damage and malfunction.
• Connect only components that do not overload the controller inputs and outputs;
more information is provided on the type plate and in Section 14, p. 50.
• For outputs R1 and R2 the following applies:
– Speed control must be deactivated when an external relay is connected.
– The correct pump type must be set (standard/high-efficiency pump).
More information on this is provided in Sections 4, p. 13 and 10, p. 43 (P18, P19).
Notes
• Any connection polarity may be used for the 1 – 5 and R
S
signal inputs and outputs.
• Only type Pt1000 temperature sensors may be used.
• Lay the sensor cables at least 100 mm away from any power supply cables.
• Use shielded sensor cables when inductive sources are present, e.g. high-voltage
lines, radio transmitters, microwave devices.
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