Wilo Control MS-L, Installation And Operating Instructions Manual

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14 Installation and operating instructions • Wilo-Control MS-L • Ed.02/2022-05
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Fig. 2: Control MS-L 2
The current operating states (operation and fault) are visually indicated via LEDs on the front
side. Faults are also indicated audibly via an integrated buzzer. The last error is stored in the
fault memory.
LED indicators MS-L 1... MS-L 2...
Automatic mode • •
Pump operation • •
High water • •
Overload fault • •
Winding fault • •
Service interval indicator − •
Monitoring of certain operating parameters − •*
Key
− = not available, • = available
* Only “LS” version
Operation is via four or five buttons on the side-mounted control panel:
• Automatic mode
• Manual mode (for each pump)
• Stop (all pumps off)
• Buzzer off/reset
4.2 How it works The pumps are automatically switched on and off depending on the fill level:
• Control MS-L … / MS-L … -O :
–
The level is detected via a two-position control with a float switch for each pump.
–
The high water level is detected by a separate float switch.
• Control MS-L … -LS :
–
The level is detected continuously via a rod float sensor (4 … 20 mA signal).
–
The high water level is detected by a separate switching point.
A follow-up time can be set for deactivation. When the high water level is reached, there is:
• A visual and audible alarm signal.
• Forced switch-on of all pumps.
• Collective fault signal activation.
• Activation of the external alarm signal (only Control MS-L2 …).
4.3 Technical data
Date of manufacture* See rating plate
Mains connection See rating plate
Mains frequency 50/60 Hz
Max. current consumption per pump See rating plate
Max. rated power per pump See rating plate
Pump activation type direct
Ambient/operating temperature -30 … +60 °C
Storage temperature -30 … +60 °C
Max. relative humidity 50 %, non-condensing
Protection class IP54
Electrical safety Pollution degree II
Control voltage 24 V DC
Housing material UV-resistant polycarbonate
*The date of manufacture is stated in accordance with ISO 8601: JJJJWww
• JJJJ = year
• W = abbreviation for week
• ww = calendar week