Table of Contents
Advertisement
en
x
Fig. 8: Connection overview symbol
6.5.5
Leakage detection connection
x
Fig. 9: Connection overview symbol
6.5.6
Connection of signal transmitter
for level control device
18
One thermal motor monitoring device with bimetallic strips can be connected per pump. Do
not connect a PTC sensor!
Insert the connection cables laid by the customer through the threaded cable glands and se-
cure. Connect the wires to the terminal strip according to the connection diagram. Use the
terminal number shown in the connection overview on the cover. The number shown in
location "x" on the symbol indicates which pump it refers to:
•
1 = pump 1
•
2 = pump 2
•
3 = pump 3
DANGER
Risk of explosion due to incorrect connection!
If the connected pump is installed in an explosive atmosphere, there is a
risk of explosion due to incorrect connection:
• Switch on ex-mode (menu 5.64)!
• Observe the section on explosive atmospheres in the appendix.
• Connection must be carried out by a qualified electrician.
CAUTION
Do not apply external voltage!
An external voltage which is applied destroys the component.
Leakage detection that uses a moisture probe can be connected for each pump. The
threshold (< 30 kOhm) for a deactivation is permanently stored in the switchgear. Do not
connect a float switch!
Insert the connection cables laid by the customer through the threaded cable glands and se-
cure. Connect the wires to the terminal strip according to the connection diagram. Use the
terminal number shown in the connection overview on the cover. The number shown in
location "x" on the symbol indicates which pump it refers to:
•
1 = pump 1
•
2 = pump 2
•
3 = pump 3
DANGER
Risk of explosion due to incorrect connection!
If the connected signal transmitter is installed in an explosive atmo-
sphere (Ex zone), there is a risk of explosion due to incorrect connection:
• Do not connect electrode in an explosive atmosphere (Ex zone)!
• Connect the float switch using an Ex cut-off relay!
• Connect level sensor via a Zener barrier!
• Observe the section on explosive atmospheres in the appendix.
• Connection must be carried out by a qualified electrician.
CAUTION
Do not apply external voltage!
An external voltage which is applied destroys the component.
The level can be measured via the following signal transmitters:
•
Level sensor
Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09
Advertisement
Table of Contents
Need help?
Do you have a question about the Control EC-L1 Series and is the answer not in the manual?
Questions and answers