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Installation and operating instructions: Wilo-SC-Fire Diesel A2P
53
Details of the diesel cabinet terminal blocks
Terminal
block no.
Terminal
no.
Designation
Signal type
X0
1
Connection voltage
cabinet
Power supply performance (230 V)
2
X1
1
Diesel oil pre-heating
Power supply performance (230 V, max 10 A)
2
X4
1
Pressure switch 1
DI
2
3
Pressure switch 2
DI
4
5
Fuel malfunction
DI (Float switch, contact closed when the tank
level is low, i.e. malfunction)
6
7
Pre-heating diesel
malfunction
DI (Thermostat, contact closed when operation
OK)
8
9
Motor oil malfunction
DI (Pressure switch, ground contact when low
pressure malfunction)
10
Motor temperature
malfunction
DI (Thermostat, ground contact when the
temperature is too high)
11
Motor oil pressure
AI (Pressure sensor with resistor,
270…30 Ω
≙
0…8 bars)
12
13
Cooling liquid temperature
AI (Temperature sensor with resistor,
1805…110 Ω
≙
10…90 °C)
14
15
Motor oil temperature
AI (Temperature sensor with resistor,
1805…43 Ω
≙
10…130 °C)
16
17
External water
temperature
AI (Temperature sensor with resistor,
1805…110 Ω
≙
10…90 °C)
18
19
Motor speed (used by the
controller but not for the
tachometer)
AI (Frequency sensor, 0…10 kHz)
20
21
Cooling water malfunction DI (Float switch, closed in case of low level)
22
23
Motor cooling line filter
malfunction
DI (Differential pressure sensor, closed if the filter
is not clogged)
24
25
Aeration vent malfunction DI (position contact, closed if the vents are open)
26
27
Technical room
temperature malfunction
DI (Thermostat, open when the temperature is
too low)
28
