Wilo Control MS-L, Installation And Operating Instructions Manual

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Installation and operating instructions • Wilo-Control MS-L • Ed.02/2022-05 25
3
Control MS-L2...
SSM Alarm
16 15 14 13 12 11
Fig. 15: Terminal strip sensors: external alarm
signal for high water
An external alarm signal (horn, flashing light, etc.) can be connected for the high water alarm:
• Contact type: potential-free changeover contact
• Contact load:
–
Minimum: 12 VDC, 10 mA
–
Maximum: 250 VAC, 1 A
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.
Switchgear Normally open contact (NO) Normally closed contact
(NC)
Control MS-L1... − −
Control MS-L2... Terminal 15/16 Terminal 14/15
6.6 Functions The switchgear is equipped with the following functions. All functions are switched off at
the factory. The functions must be switched on as required.
Inputs/outputs
Control MS-L 1... Control MS-L 1...-O Control MS-L 1...-LS Control MS-L 2... Control MS-L 2...-O Control MS-L 2...-LS
Internal buzzer • • • • • •
Pump kick • • • • • •
Service interval indicator − − − • • •
Monitoring operating parameters − − − − − •
Follow-up time • • • • • •
Adjustable switching points for pump ON and high water* − − • − − •
Key
• = available, − = not available
* The switching points can be selected from eight sets of parameters for the respective lift-
ing unit.
6.6.1 Internal buzzer
ON DIP
1 2 3 4 5 6 7
8
Fig. 16: DIP switch 1: internal buzzer
The internal buzzer can also issue audible warning messages in addition to the visual indic-
ator. Switch the internal buzzer on/off via DIP 7 on DIP switch 1:
• “ON” position: Buzzer on
• “OFF” position: Buzzer off
6.6.2 Pump kick
ON DIP
1 2 3 4 5 6 7
8
Fig. 17: DIP switch 1: Pump kick
To prevent prolonged standstill periods for the connected pumps, a periodic test run can be
performed (pump kick function). A 2 s test run takes place after a standstill period of 24 h for
the respective pump.
Switch the pump kick on/off via DIP 6 on DIP switch 1:
• “ON” position: Pump kick on
• “OFF” position: Pump kick off
6.6.3 Service interval indicator A service interval indicator can be switched on to increase operational reliability. The time is
recorded continuously when the mains voltage is switched on. After the interval has
elapsed, a visual signal is emitted by means of the yellow LED on the front.
NOTICE! There
is no audible signal and the collective fault signal is not activated!
ON DIP
1 2 3 4 5 6 7
9
Fig. 18: DIP switch 2: Service interval indicator
Switch the desired interval on and off via DIPs 4 and 5 on DIP switch 2:
• DIP 4 and 5 “OFF”: Service interval off
• DIP 4 “ON”: ¼ year service interval
• DIP 5 “ON”: ½ year service interval
• DIP 4 and 5 “ON”: 1 year service interval
Contact customer service to reset the counter.