KSB Cervomatic EDP.2, Инструкция по установке и эксплуатации

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5 Installation at Site
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Cervomatic EDP.2
5.5 Electrical connection
DANGER
Electrical connection work by unqualified personnel
Risk of fatal injury due to electric shock!
▷ Always have any work on the connection to the power supply performed by a
trained electrician.
▪ Remove the cover of the control electronics and make all connections as per
specifications on the terminal strip.
▪
Check power supply.
Set the selector switch to define the voltage:
To A for 220 - 240 V
To B for 380 - 415 V
Pumps with three-phase motors
NOTE
An upstream motor protection switch is recommended.
▪
Power supply of automatic control unit: Connect L1, L2 and L3 via a 3-pole motor
protection switch (recommended) in de-energised state and connect the PE
conductor to ensure correct earthing.
▪ Motor power supply: Connect motor to U, V, W and PE (earth).
(
ð
Section 9.1, Page 22)
Pumps with AC motors
NOTE
An upstream motor protection switch is recommended.
▪ Power supply of automatic control unit: Connect L1 and L2 via a motor
protection switch (recommended) in de-energised state and connect the PE
conductor to ensure correct earthing.
▪ Motor power supply: Connect motor to U, V and PE (earth).
(
ð
Section 9.1, Page 22)
NOTE
The earth conductor must always be longer than all other conductors. The earth
conductor is the first to be connected during installation and the last to be removed
when dismantling.
Connecting additional equipment
▪
Alarm monitoring:
The automatic control unit has a volt-free contact with a maximum amperage of
1 A for transmitting signals to various alarm devices (visual, acoustic, etc.).
Connection procedure
(
ð
Section 9.2, Page 23)
▪
Level switch of inlet tank:
(e.g. via float switch in inlet tank)
Input for stopping pump as soon as the external switch for detecting the
minimum fill level trips.
Connection procedure
(
ð
Section 9.2, Page 23)