Grundfos SLC Series Installation And Operating Instructions Manual page 11

DLC, transducer-controlled option
From main power panel
XXX VAC, 3-phase, 60 Hz
Main disconnect switch provided by others
Ground wire
L1
L2
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 1 failure
Pump 2 failure
Fig. 8 Wiring diagram, DLC with submersible analog level pressure transducer
L1 T1
L1
L2 T2
L2
L3 T3
L3
CB xxA K11
L1 T1
L2 T2
L3 T3
CB xxA
K12
F1 F2
H1 H*
X1 X2
CB 10A
+ -
24 V
power supply
L1 N
+ -
From
display
LOGO
screen
L+ M
500
Ohm
+ -
24V Trans - i8
i2
3 2
3 i1
1
NIBP
i5
K02
21 22
i6
K03
21 22
K04
21 22
i7
K03
21 22
Hand
Off
Q1
Hand
Off
Q2
Q3
Q4
Pump 1 over-
temperature sensor OLR1
96 95
5 4
Seal sensor 1
6
Pump 2 over-
OLR2
temperature sensor
96 95
8 7
Seal sensor 2
9
K01
12 11 11
10 11
Alarm contact
Factory wire
Field wire
1
Pumps
OLR1 XXX VAC, 3-phase
xxA
XX hp
2
OLR2
XXA
PLC text display
To LOGO
24 VDC power
supply
PLC
Auto
K02 K03
11 14 11 14
Motor contactor
K11
A1 A2
X2
X1 Pump run light
G
Auto
K04 K05
11 14 11 14 Motor contactor
K12
A1 A2
Pump run light
X2
X1
G
Beacon Alarm Light
R
Alarm relay
K01
A1 A2
Audible Alarm
A
+ -
Pump 1 overload relay or
K02
overtemperature sensor
A1 A2
K03 Pump 1 seal-failure sensor
A1 A2
Pump 2 overload relay or
K04
overtemperature sensor
A1 A2
Pump 2 seal-failure sensor
K05
A1 A2
14
12
11