Liquid Controls E3651, E3656 User Manual
LECTROCOUNT LCR-II CPU 840404 WIRING SCHEMATIC
E3655/E3656
POWER
Open
Drain
EARTH/Shield (13)
J10 Communications Jumper
LCR-II - In A position for Lap Pad
all other functions in B position
DC
GROUND
POWER
MH1
J19
MH2
Battery or
Accessory Panel
Power
Power
Supply
Supply
GND/Black (12)
7.5A
In-Line
Power
Cable
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C1
J5
Fuse
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J2
24
25
J3J2J1
MH3
CPU
84040
+12-24/Red (11)
11 12 13
81512
40' Gray
J6
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J1
CTS RXD TXD RTS GNDGND 485+A485-B CTS RXD TXD RTS +VP
PRINTER SERIAL 485 TERMINAL
J11
P1
B
A
J17
J18
ASSY
84040
RTD-D1
TEMPERATURE PROBE
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J10
TP1
REV.
RTD+S
RTE-S
RTD+D
J14
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J14
DIFFERENTIAL
PRESSURE (∆P)
DMS i1000
TRANSDUCER
GND/Black (30)
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CTS/Blue (29)
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81513040
Black Data
Cable 40’
Violet and red
wires move from
48 & 46 to
25 & 24
RXD/Yellow (28)
TXD/Orange (27)
RTS/Brown (26)
TXD/Violet (25)
+VP/Red (24)
GND/White (51)
CTS/Green (50)
RXD/Gray (49)
J3 Terminal
disconnected
24
25
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J1
SERIAL J2 TERMINAL J3PRINTER J1
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J2
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J3
Power, input and output (I/O) wiring must be in accordance
with the area classification for which it is used (Class I, Div 1).
For North America, installations must be per the U. S. National
Electrical Code, NFPA 70, or the Canadian Electrical Code
in order to maintain Class I, Division 1 ratings. This may
require using connections or other adaptations in accordance
with the requirements of the authority having jurisdiction.
For positive ground installation,
contact the Liquid Controls Service Department
WARNING: Explosion Hazard -
Do NOT disconnect equipment
unless power has been switched
OFF or the area is known to be
Non-Hazardous.
WARNING: Explosion Hazard - Substitution of components
may impair suitability for Class I, Division 1 applications.
can be
81513040
Black Data
Cable 40’
81514
Lap Pad Adapter
E40301
Lap Pad
825001
Printer Power Cable
WARNING: Explosion Hazard When in hazardous locations,
turn power OFF before replacing
or wiring modules.
VAPOR ELIMINATORS
81947
Optical Sensor
Gnd/Black (54)
In5/White (55)
+VP/Red (56)
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J15
OPTICAL AIR AND
+VP/Black (46)
GND/White (51)
B/Yellow (57)
MH1
81944
DP/Printer
Board
A/Blue (58)
+5V/Red (59)
CTS RXD TXD RTS GNDGND 485+A485-B CTS RXD TXD RTS +VP
PRINTER SERIAL 485 TERMINAL
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J1
24
25
J3J2J1
B
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C2
GND
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+5V(Out)/Jumper
(59 to 32)
J20
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GND
J3
COUNTER
IN 1
EARTH
POWER
J7
J7
IN 2
IN 3
IN 4
MH4
GND
J6
+5V OUT
+12-24V
11 12 13
+VP
J8
82637
∆P Transducer Kit
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81915 LCR-II LCD Display
J3
MH4
J20
C2
GND
GND
+VP
+VF
PGND
COUNTER
IN 1
PULSE INPUTS
OUT1
OUT6
+VP
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J7
J7
IN 2
OUT2
OUT3
AUX OUTPUTS
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EARTH
GND
POWER
IN 3
IN 4
+5V OUT
GND
OUT4
+VFIN5 OUT8GND
52 53 54 55 56
J15
AUX I/O
+VPPGNDOUT7
SOL
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MH5
+12-24V
11 12 13
OUT5
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J6
+VP
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J12
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81330
LCR-II Display
Coiled Cable
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J6
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J8
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J12
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J15
81832
LCR-II Switch Harness
81819
LCR-II Switch Plate
ESD PRECAUTION
OPENING LECTROCOUNT REGISTERS
Before opening the LectroCount register
and handling the CPU board, it is important
to discharge any ESD that may have built up
on your person. To discharge ESD from your
person, touch a well-grounded point such as
the LectroCount register housing, the meter,
the truck piping, or the bumper. When the
maintenance is complete and the LectroCount
register door is closed, the CPU board is
protected from ESD by the LectroCount
register housing which is grounded
to the chassis.
PRINTER
RTS/Brown (26)
TXD/Orange (27)
RXD/Yellow (28)
CTS/Blue (29)
GND/Black (30)
81816
Remote Display Cable
S3 Solenoid Valve
Out8/Black (53)
+VP/Red (46)
TXD/Violet (48)
RXD/Gray (49)
CTS/Green (50)
GND/White (51)
24
25
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J1
LECTROCOUNT
REMOTE DISPLAY
+Vo/Red (45)
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J12
AUX OUTPUTS
Out8/Black (53)
502011
S3
+VP/Red (52)
J15
AUX I/O
TERMINAL J3PRINTER J1
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GND/Black (41)
DN/Green (40)
J12
2
+VP/Red (52)
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J3
UP/White (39)
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Auxiliary Output 1 (Out 1)
1
J13
PULSE OUTPUT
DEVICE (POD) 1-4
GND/Black (37)
CHB/Green (34)
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CHA/White (33)
J8
PULSE OUTPUTS
INTERNAL
PULSER
(or POD 5)
82597
GND/Black (37)
CHB/Green (34)
CHA/White (33)
+5/Red (32)
Internal Pulser Kit
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J8
PULSE OUTPUTS
J8
AUXILIARY OUTPUTS
Auxiliary Output 2 (Out 2)
Pulse Output (Out 3)
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J12
AUX OUTPUTS
AUXILIARY DEVICE
Out7
+Vo
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i.e Dead-Man
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J13
J13
SOL
+Vo/Red (31)
J8
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J12
Auxiliary
Device
Shutdown
MEMBRANE
SWITCH
81839
Membrane Switch Harness
Black (38)
Violet (36)
Grey (35)
PULSE OUTPUTS
J8
81838
Membrane Switch
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J8
(Electronic Temperature Volume Compensation)
ETVC
71130 Temperature Probe
White (20)
White (21)
Red (22)
Red (23)
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TEMPERATURE PROBE
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J14
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SOLENOID
VALVES
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Solenoid operated valve 81527
(3-way LPG solenoid) has 3 cables
potted into the housing. All other
solenoid operated valves on Liquid
Controls valves use cable assembly
81859, which has 2 cables.
Single Stage
81527 3-Way Solenoid (LPG)
A2843 Block Valve (LPG)
A2847-11
Single Stage Block Valve
Jumper from
Terminal 15
to Terminal 18
Earth/Green (16)
Out7/Black (15)
+12V/Black (14)
J13
SOL
S1&2
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J13
Two Stage
81527 3-Way Solenoid (LPG)
A2859-11 Block Valve (LPG)
A2848-11 Two Stage Block Valve
A2982 E-7 Two Stage Piston Valve
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The Earth grounds for Terminals 16
& 19 are optional. The solenoid
operated valves are grounded
through the component they are
mounted on.
Out6/Black (18)
+12V/Black (17)
1
Earth/Green (19)
Earth/Green (19)
+12V/Black (17)
Out6/Black (18)
Earth/Green (16)
Out7/Black (15)
Out7/Black (15)
Earth/Green (16)
+12V/Black (14)
+12V/Black (14)
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J13
J13
SOL
2
1
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