Control Unit Installation Page 2.3 - 13 2.3
Figure 2.3-12 Three Phase 240 VAC Supply – FE PETRO Variable Frequency Controller,
Motor Control Box – and IST Pump Interface Schematic to TS-LLD
Reference Site Layout Figure 2.2 - 16
Install Line Filter
Cap at L1 and L2
DANGER ELECTRICAL SHOCK HAZARDS. TURN OFF AND LOCK-OUT THE
SUBMERSIBLE PUMP POWER SOURCE (L1, L2, L3 - AT THE CIRCUIT
BREAKER) - BEFORE - WORKING ON THIS EQUIPMENT. FAILURE TO TURN
OFF THE THREE PHASE POWER SOURCE WILL RESULT IN SEVERE INJURY
OR DEATH.
Conduit to pump Junction Box
FE PETRO IST three phase
pump motor
Overloads (OLs)
are in series w/ M1 & M3 )
Red
ORG
BLK
Variable
Frequency
Controller
(VFC)
HOOK
(Dispense
Signal)
M3 M2 M1
L3 L2 L1
TS-LLD
LSU (Leak
Sensing Unit)
at IST Pump
Housing
Leak Detection
Port
BLK
Dispense
Switches
GND
N
N
GND
GND
N
L3 is
optional
Three
Phase
wiring
L3 L2 L1
Electrical
Power
Panel
P/N
020-0028
S1
S2 M2 NL2
M1
L1
Aux. Control Relay Box
(remove dashed wires)
2 NEU
Neutral (WHT)
1) Observe color code L1 L2 L3 phase sequence for proper rotation
of motor.
2) All conduit fittings, EYS seal fittings, and junction boxes in
manholes or other Hazardous areas are to be explosionproof
rated for: Class 1, Div 1, Group D and wet locations
INCON TS-LLD & FE PETRO IST (or STPs with VS2 suffix)
Three Phase or Single Phase Wiring Diagram
NOTES
GND
RLY COIL (RED)
S2 (BRN)
Pump On Sig.
See Note 5
TB1
SIG RTN
3 P-OUT
4 P-IN
TS-LLD Control Unit (CU)
Power Source = L1
No connection.
Wire is routed
through the
donut-shaped
Pickup Coil
Pickup Coil
L1 Line (BLK)
RLY N.O. (ORG)
M1 (ORG)
2 485B
4 DSY2
F1
5 ALARM
3 DSY1
1 110V
TB2
1 485A
GND
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