Wilo Control MS-L Series User Manual

en Operation
28 WILO SE 2020-05
ƒ The buzzer can be switched off and the collective fault signal (SSM) deactivated
when the key lock is active.
ƒ Acknowledgement of error messages is not possible!
7.2 How it works
Control MS-L1...
In automatic mode, the pump is switched on and off depending on the water level.
Once the activation point has been reached, the pump switches on. The green LED
lights up during operation. Once the deactivation point has been reached, the pump is
switched off after the follow-up time has elapsed.
Once the high water level has been reached, the pump is switched on (forced switch-
on). The high water LED displays an alarm signal. Additionally, the internal buzzer can
emit an audible alarm signal. Furthermore, the output for the collective fault signal
(SSM) is activated.
The LEDs display an alarm signal when there is a fault. Additionally, the internal buzzer
can emit an audible alarm signal. Furthermore, the output for the collective fault signal
(SSM) is activated.
Control MS-L2...
In automatic mode, the pumps are switched on and off depending on the water level.
Once the first activation point has been reached, pump 1 switches on. Once the second
activation point has been reached, pump 2 switches on. The green LED for each pump
lights up during operation. Once the deactivation point has been reached, the respect-
ive pump is switched off after the follow-up time has elapsed. To optimise pump run-
ning times, pump cycling is carried out every time the pump is switched off.
Once the high water level has been reached, both pumps are switched on (forced
switch-on). The high water LED displays an alarm signal. Additionally, the internal
buzzer can emit an audible alarm signal. Furthermore, the output for the collective fault
signal (SSM) and the high water alarm (Alarm) is activated.
The LEDs display an alarm signal when there is a fault. Additionally, the internal buzzer
can emit an audible alarm signal. Furthermore, the output for the collective fault signal
(SSM) is activated.
7.2.1 Motor current monitoring
The electronic motor current monitoring monitors the rated current of the connected
pump. If the set rated current is exceeded, the pump is deactivated.
NOTICE!Three-phase current motor: If the rated current falls below 300mA for
more than 1s, the pump is also deactivated!
Acknowledge the error message with the “Buzzer off/reset” button.
7.2.2 Thermal motor monitoring
The thermal motor monitoring is self-acknowledging. After the motor winding has
cooled down, the error is automatically reset. The LED goes off and the collective fault
signal is deactivated!
7.2.3 High water alarm
This high water alarm is self-acknowledging. After the water level drops, the error is
automatically reset. The LED goes off and the collective fault signal and the external
alarm signal (only Control MS-L2...) are deactivated!
7.2.4 Collective fault signal
The relay of the collective fault signal switches under the following conditions:
ƒ No mains voltage
ƒ Main switch off
ƒ Motor current monitoring fault
ƒ Thermal motor monitoring fault
ƒ High water
The relay of the collective fault signal does notswitch under the following conditions:
ƒ Service interval signal
ƒ Operating parameters signal
ƒ Sensor fault signal (only Control MS-L...-LS)

Wilo Control MS-L Series Specifications

General

Brand	Wilo
Model	Control MS-L Series
Category	Control Unit
Language	English