Wilo Control EC-WP Series Installation And Operating Instructions Manual page 11

6.4.3 Pump dry-running protection
6.5 Electrical connection
6.5.1 Overview of components
7
8
Current Pump1 Current Pump2
10
1 3 5 13 A1 1 3 5
9
5
L1 L2 L3 NO L1 L2 L3 NO
T1 T2 T3 T1 T2 T3
GND A(+) B(-)
2 4 6 14 A2 2 4 6
GND LO HI
4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
Fig. 2: Control EC-WP 1 .../EC-WP 2 ...
Installation and operating instructions • Wilo-Control EC-WP • Ed.01/2024-08
4. Attach the lower part to the wall with the fixation material.
Check the lower part for deformations! Realign deformed housing (e.g. by placing
alignment plates below it) to ensure the housing cover closes securely. NOTICE! If the
cover does not close correctly, the protection class is compromised!
5. Close the cover/switch cabinet door and fasten it with the screws.
▶ Switchgear installed. Now connect the mains supply, pumps and signal transmitter.
The level can be measured via the following signal transmitters:
• Float switch
The float switch must be able to move freely in the operating space (well, tank)!
• Electrode
A forced switch-off of all pumps always takes place in the event of an alarm, irrespective
of the selected signal transmitter!
• The mains connection current and voltage must be as stated on the rating plate.
• Execute fuse protection on the mains side in accordance with the local guidelines.
• If circuit breakers are used, the switching characteristics should be selected according to
the connected pump.
• Follow local guidelines if residual-current devices (RCD, type A, sinusoidal current, uni-
versal-current-sensitive) are installed.
• Route connection cable in accordance with the local guidelines.
• Do not damage the connection cable during routing or installation.
• Earth the switchgear and all electrical consumers.
Overview of Control EC-WP 1 .../EC-WP 2 ..., up to 12 A rated current
1 Terminal strip: Mains connection
2 Mains voltage adjustment
3 Terminal strip: Earth (PE)
4 Terminal strip: Controls/sensors
13 A1
5 Contactor combinations
F1 F2 F3
14 A2
7 Control board
2 1
8 Potentiometer for motor current monitoring
3
9 ModBus RTU: RS485 interface
10 ModBus RTU: Jumper for termination/polarisation
DANGER
Danger of death due to electrical current!
Improper conduct when carrying out electrical work can lead to death
due to electric shock!
• Before all electrical work, disconnect the product from the mains and
secure it against being switched on again without authorisation.
• Electrical work must be carried out by a qualified electrician!
• Observe local regulations!
NOTICE
• Depending on the system impedance and the maximum connections/
hour of the connected consumers, voltage fluctuations and/or drops
may occur.
• When using shielded cables, attach the shielding to the earth rail on
one side of the control device.
• Always have connection carried out by a qualified electrician.
• Observe the installation and operating instructions for the connected
pumps and signal transmitters.
en
11