Wilo Control MS-L, Installation And Operating Instructions Manual

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en
28 Installation and operating instructions • Wilo-Control MS-L • Ed.02/2022-05
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 dur-
ing 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 activ-
ated.
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 activa-
tion 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 respective pump is
switched off after the follow-up time has elapsed. To optimise pump running 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 de-
activated!
7.2.3 High water alarm This high water alarm is self-acknowledging. After the water level drops, the error is auto-
matically reset. The LED goes off and the collective fault signal and the external alarm sig-
nal (only Control MS-L2...) are deactivated!
7.2.4 Collective fault signal The relay of the collective fault signal falls off under the following conditions (SSM active):
• No mains voltage
• Main switch off
• Motor current monitoring fault
• Thermal motor monitoring fault
• High water
The relay of the collective fault signal does not fall off under the following conditions (SSM
not active):
• Service interval signal
• Operating parameters signal
• Sensor fault signal (only Control MS-L … -LS)
8 Commissioning
8.1 Operator responsibilities
• Provide installation and operating instructions at the switchgear or at a place specially
reserved for it.
• Make the installation and operating instructions available in a language the personnel
can understand.