Wilo Wilo-Control EC-L - System Impedances

Appendix en
Installation and operating instructions Wilo-Control EC-L 97
13.1.5 Dry-running protection connec-
tion
!
Fig.77: Overview of connections, terminal lay-
out
DANGER!Risk of explosion due to incorrect execution! Monitoring of the dry-run-
ning level must be performed with a separate float switch!
Connect the float switch to the terminal strip for active ex-mode (see Overview of
components [}63], item 4b). For details on the terminal number, see the overview of
connections in the cover.
13.1.6 Switchgear configuration: Switch-
ing on ex-mode
Adapted functions
Ex-mode adapts the following functions:
▪Follow-up times
All follow-up times are ignored and the pumps switched off immediately!
▪Dry-running level (by level sensor or dynamic pressure bell)
The pumps can first be switched on again once the “All pumps Off” fill level has been
exceeded!
▪Alarm dry-running protection (via float switch)
Alarm manual reset (anti-reactivation lock)!
▪Alarm thermal motor monitoring
Alarm manual reset (anti-reactivation lock)!
Activating ex-mode
1. Press the operating button for 3s.
⇒ Menu 1.00 appears.
2. Turn the operating button until menu 5 appears.
3. Press the operating button.
⇒ Menu 5.01 appears.
4. Turn the operating button until menu 5.64 appears.
5. Press the operating button.
6. Change value to “on”: Turn the operating button.
7. Press the operating button.
▶ Ex-mode switched on.
13.2 System impedances
3~400V, 2-pole, direct starting
Power in kW System impedance in
ohms
Connections/h
2.2
0.257 12
2.2
0.212 18
2.2
0.186 24
2.2
0.167 30
3.0
0.204 6
3.0
0.148 12
3.0
0.122 18
3.0
0.107 24
4.0
0.130 6
4.0
0.094 12