Wilo -Control SC-Fire Diesel DK Installation And Operating Instructions Manual page 11

English
After each start attempt, the system switches to a
different battery. A non-engaged pinion in the mo-
tor's gear rim is detected. Additional attempts are
carried out to engage the pinion.
The green LED (Fig. 2, item 2) indicates that the
diesel engine has started. The LED lights up if the
measured speed exceeds the set switching thresh-
old for "motor in operation" (menu 1.2.1.3). The
LC display shows the current speed when the mo-
tor is running. The engaged starting pinion is au-
tomatically disengaged. The diesel engine can on-
ly be stopped manually be pressing the "stop" but-
ton (Fig. 2, item 14). The green LED (Fig. 2,
item 2) goes out when the speed drops below the
switching threshold for "motor in operation" and
the LC display shows the battery voltage and
charging current again.
Priming device
If the level of the pump priming tank falls below
2/3, the float switch closes and this is indicated by
a white LED (Fig. 2, item 8). If the LED flashes,
this indicates that the set delay time has expired
(see menu 1.2.5.2). After the set delay time has
expired, the LED lights up continuously for as
long as the float switch remains tripped. The au-
tomatic start cycle for the diesel engine takes
place, with a maximum of 6 start attempts. The
starting time (menu 1.2.2.1) and the pause time
(menu 1.2.2.2) can be set using the software. After
each start attempt, the system switches to a differ-
ent battery. A non-engaged pinion in the motor's
gear rim is detected. Additional attempts are car-
ried out to engage the pinion.
The green LED (Fig. 2, item 2) indicates that the
diesel engine has started. The LED lights up if the
measured speed exceeds the set switching thresh-
old for "motor in operation" (menu 1.2.1.3). The
LC display shows the current speed when the mo-
tor is running. The engaged starting pinion is au-
tomatically disengaged. The diesel engine can be
stopped manually by pressing the "stop" button
(Fig. 2, item 14). The green LED (Fig. 2, item 2)
goes out when the speed drops below the switch-
ing threshold for "motor in operation" and the LC
display shows the battery voltage and charging
current again.
Voltage monitoring of A and B batteries (Fig. 1,
item 2)
To improve operational reliability, the batteries
and the mains power supply to the chargers are
monitored continuously. The chargers report any
faults to the control, such as a wire break, short-
circuit, battery fault or mains supply fault. The
control evaluates the faults and displays them in
the fault menu.
In addition, a minimum battery voltage can be set
in menu 5.4.1.0. If the voltage in one of the con-
nected batteries falls below this value, an error
message appears on the display.
Installation and operating instructions Wilo‐Control SC‐Fire Diesel DK
Monitoring the motor start
After the pressure or float switch trips, the motor's
automatic start cycle takes place. The motor start
is monitored for malfunctions by the control, such
as the pinion engaging in the motor's gear rim and
false motor starts. If no confirmation is received
during starter activation indicating that the pinion
is engaged, the system will perform an additional
activation to attempt to throw the pinion into gear.
An error message is shown on the display. After
each start attempt, the system switches to a differ-
ent battery. After 6 unsuccessful start attempts, the
system interrupts the process, the yellow LED
(Fig. 2, item 13) lights up, an error message is
shown on the display and the allocated fault signal
contacts are active.
A and B batteries test in automatic mode
To perform the test, you have to select the auto-
matic mode via the key switch and there should
not be any start requests present from the pressure
switch or float of the priming tank. Press and hold
the stop button (Fig. 1, item 16) during the entire
test and push the battery test button to start the test
by using the battery test button in automatic mode
(Fig. 1, item 18). The test begins by activating the
LED (Figure 2, item 8) and performs a cycle of
six alternating starts between the A and B batter-
ies, according to the times set in parameters
1.2.2.1 for the starting time, and the parameters
1.2.2.2 for the break time. The total duration of
the test depends on the time set on the relay "3kT"
(the relay 3kT must be set with function "E" and
the total time of six starting cycles with six
breaks, is two minutes.). After the starting cycle
has completed, the "fail to start" LED (Figure 2
item 6) and the "manual start test" LED (figure 2
item 13) will turn on. Activate the latter after re-
leasing the stop button, and it will start the motor
pump for checking the proper functioning.
Battery C test in manual mode
It is possible to test the status of the C battery used
for the emergency manual start of the fire group.
To perform the test, select manual mode via the
key switch, press and hold the stop button (Fig. 1,
item 16) during the entire test and push the battery
test button to start the test by using the battery test
button in manual mode (Fig. 1, item 19). A test
loop consists of three start-ups, and the time for
each start-up is set on the relay "2KT" (default:
function "D" 10 s). The total duration of the test
depends on the time set on the relay "1KT" (de-
fault: function "E" 54 s).
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