Grundfos SLC Series Installation And Operating Instructions Manual page 9

SLC, transducer-controlled option
From main power panel
XXX VAC, 3-phase, 60 Hz
Main disconnect switch provided by others
Ground wire
L1
L1
L2
L2
L3
L3
Fuses 2A
Control panel - transformer
XXXV - 120 V, 100 VA
Controls
115 VAC
Pressure transducer
High-level alarm float
switch
Low-level alarm float
switch
Push-to-Silence alarm
Pump failure
Fig. 6 Wiring diagram, SLC with submersible analog level pressure transducer
L1 T1
L2 T2
L3 T3
CB xxA K11
F1 F2
H1 H*
X1 X2
CB 10A
+
24 V
power supply
L1 N
+ -
LOGO
L+ M
500
Ohm
+ -
24V Trans - i8
i2
3 2
3 1 i1
NIBP
i5
K02
21 22
i6
K03
21 22
Hand
Q1
Q3
Q4
Pump over-
temperature sensor OLR
96
5 4
Seal sensor
6
K01
12 11
7
Alarm contact
1
Pump
OLR
xxA
XXX VAC, 3-phase, XX hp
PLC
text display
To LOGO
24 VDC
-
power supply
From
display
screen
PLC
Auto
K02 K03
OFF
11 14 11 14
Motor contactor
K11
A1 A2
Pump run light
X2
X1
G
Beacon alarm light
R
Alarm relay
K01
A1 A2
Audible alarm
A
+ -
Pump overload relay or
95
K02
overtemperature sensor
A1 A2
Pump seal-failure sensor
K03
A1 A2
11 14
8 9
Factory wire
Field wire
9