Wilo -Control SC-Fire Electric A2P Installation And Operating Instructions Manual page 12

English
Once the set pressure is reached or exceeded it is possible to switch off the LED/LEDs ("active" Fig. 2,
pos. 19 and pos. 20) previously turned on by pressing the malfunction acknowledgement. The pump is
still running and must be switched off manually.
Start-up tank
If the level of water in the start-up tank of the pump is less than 2/3 of the full level, the float switch closes and the
red indicator light is activated (Fig. 2, pos. 6). Following a configurable follow-up time (see menu 1.2.5.2) the
pump switches on and the green indicator light (Fig. 2, pos. 13) is activated.
Note: As the follow-up time expires, the indicator light flashes
As soon as the tank is full, the float switch opens and the error message can be acknowledged. The indicator light
turns off (Fig. 2, pos. 6) and the pump can be switched off manually. The audible warning (Fig. 2, pos. 13)
deactivates also.
Control of the voltage
To increase operational safety, the power supply voltage of the switchbox is subject to permanent control.
The power supply voltage is configured in the menu 1.2.1.1 (400 V by default), the 3 phases are controlled.
When the pump is on standby, the 3 phase-to-phase voltages are displayed one after another.
As soon as the power supply voltage is lower or higher than the defined tolerance level (see menus 5.4.1.0
and 5.4.2.0), an error code is displayed after a certain time lag (see menu 1.2.5.3).
When the pump is in operation, and in case of a malfunction, the pump continues to function.
Protection against excess currents
During pump functioning, the current is subject to permanent monitoring.
The rated current motor is configurable in the menu 1.2.1.2.
The current is monitored over the three phases. When the pump is functioning, the current is indicated on the
screen. The green indicator light ("on" Fig. 2, pos. 13) turns on as soon as the current of the pump reaches a
predefined minimum level (see menu 5.4.3.0).
As soon as the current of the pump exceeds the maximum threshold (see menu 5.4.4.0), the red indicator light
("malfunction" see menu 1.2.5.5) (Fig. 2, pos. 14) turns on.
Despite the presence of an error, this does not prevent the pump from starting or continuing to function. As soon
as the current level of the pump returns to within the range of the levels permitted, you can acknowledge the
error. And the indicator light (Fig. 2, pos. 14) deactivates.
Monitoring of the "pump in demand"
As soon as the pump switches on, a pressure switch located at the pressure connection monitors whether the
pressure at the pump outlet is correct.
After a certain predefined time (see menu 1.2.2.2), if the pressure at the pump outlet is not reached, the red
indicator light turns on ("pump in demand" Fig. 2, pos. 3).
When the pressure exceeds the configured threshold, the error message can be acknowledged and the indicator
light will change to green (Fig. 2, pos. 3).
Monitoring of failed start-up
When the pump is in operation, and after a certain predefined time in the menu 1.2.2.1, the electrical power
consumption is monitored.
The power is monitored against the following parameterisation: 1.2.1.1 and 1.2.1.2.
During the monitoring period, and after a certain configured lag time (see menu 1.2.5.6), if the minimum value has
not been reached (see menu 5.4.5.0), the indicator light will turn yellow (Fig. 2, pos. 2).
When the power consumed is reached again, the error message can be acknowledged. And the indicator light will
change from yellow to green (Fig. 2, pos. 2).
WILO SE 01/2017 12