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ELECTRICAL CONNECTIONS (FOR ENGINEERS ONLY)
5.2
Connecting the leads
Observe the following points when connecting the leads:
Comply with local regulations, such as protective earthing tests etc..
•
Only use pumps, valves and sensors supplied by the manufacturer.
•
Protect the programmer from overloads and short-circuits.
•
The power supply must match the specifications on the rating plate. See also Table 1, page 9.
•
Connect only 1 lead to each terminal (max. 1.5 mm
•
The temperature sensor leads can be connected either way round. The sensor leads can be up to
•
100 m long (up to 50 m length = 0.75 mm
Route all sensor leads separately from cables carrying 230 V or 400 V to avoid inductive interference
•
(minimum separation 100 mm).
Use shielded low-voltage cables if external inductive interference is expected (e.g. from power
•
substations, high-voltage power cables, microwaves).
For the 230 V connection, use a cable of at least type H05 VV- ... (NYM...).
•
Ensure that structural fire safety features are not impaired.
•
The leads from the motorised 3-way diverter valves shown in the configuration diagrams must be
•
connected as follows: brown = R, blue = N, yellow and green = Earth.
Only connect pumps to the outputs R1 and R2 (speed control on these connections only).
•
Motorised valves with OPEN/CLOSE command (or mixer units) must also be connected to terminals
•
to
.
R3
R5
The connections L3 to L5 are for the power supply for special functions of connected components.
•
The use of some functions (cooling, thermal disinfection and heat exchanger anti-icing)
requires additional components (valves, temperature sensors) that must be purchased
separately.
WARNING: risk of damage to system due to pump failure.
B If a pump with internal electronic circuitry is to be connected, deactivate the speed
control function (
B Connect the leads according to the desired configuration diagram (
B After completing the work, close the programmer by replacing the cover and the securing screw.
20
2
, up to 100 m = 1.5 mm
Section 9.5.5, page 64).
2
).
2
).
pages 22 - 48).
6 720 644 593 (2010/04)
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