7
99B138120x-mub-en | 2014/11 | V05
EN
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 installation.
•
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 the
Technical data
section.
• The local power supply must match the specifications on the type plate of the controller.
•
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 guidelines
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 the
Technical data
section.
Note
•
Any connection polarity may be used for the
1
–
4
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.
