Incon TS-LLD - TS-LLD Line Leak Detector Mechanical Blender Interface

2.3 Page 2.3 - 8 TS-LLD INSTALLATION GUIDE
TS-LLD Line Leak Detector —
Mechanical Blender Interface
When connecting a TS-LLD line leak detector to systems with mechanical
blenders, tie the: premium, all mid-grades, and regular dispenser switch signals
together (electric blenders can be wired normally). Wire both premium and
regular TS-LLD Control Units at TB1-4 (P-IN). See the typical (partial) wiring
diagram below. Because the mid-grades are blended mixtures of the premium
and regular octanes, any product dispense will abort leak tests at the premium
and regular Control Units.
CAUTION The dispense on signals must be in phase to avoid electrical shorts
and damage. Verify that all dispenser switch signals are in phase before you tie
them together (in phase = 0 Volts AC in respect to each other and 120 Volts AC in
respect to Neutral or ground). Note that both pumps will be active on any
dispense.
PREMIUM
TS-LLD
Control Unit
REGULAR
TS-LLD
Control Unit
TO: REGULAR MOTOR
START RELAY COIL
TO: PREMIUM MOTOR
START RELAY COIL
REGULAR
Dispense
Switch (es)
MID-GRADE
Dispense
Switch (es)
S1
N.O.
C
N.O.
C
Dispense
(on) si
g
nal
Dispense
(on) si
g
nal
Tie
to
g
ether
PREMIUM
Dispense
Switch (es)
S1
N.O.
C
S1
Dispense
(on) si
g
nal
2 NEU
SIG RTN
1 110V
1 485A
2 485B
3 DSY1
4 DSY2
5 ALARM
TB1 -
F1
TB2 -
1 110V
1 485A
2 485B
3 DSY1
4 DSY2
5 ALARM
2 NEU
SIG RTN
TB1 -
TB2 -
F1
Figure 2.3-7 Blended Dispensers to TS-LLD Control Unit – Interface Schematic