6
Conduit Layout for LCD Display
Logic Board
Serial Line
Connection
R
B
R
B
R
B
R
B
Level Wand
Level 2
Level 3
Level 4
Water
Meter
Input
Make/up
Switch
Make/up
Cal.
Make/up
Cond.
Probe
B
R
B
R
Pressure
Sensor #1
Pressure
Sensor #2
R
B
ISO
4-20
Out
To 4-20
Board
LCD
Contrast
TP-8
TP-6
TP-7
TP-10
-12
+5
+5
Gnd
Gnd
+12
TP-3
GND
TP-4
TP-2
TP-5
TP-1
-5
+5
-12
+12
R
B
R
B
R
B
R
B
R
B
Pulse 1
Pulse 2
Pulse 3
Pulse 4
Bleed Meter
Flow
R +12 VDC
B GND
B
R
W
G
B
R
W
G
Eprom
ADJ.
TP6
Cond. Switch
OFF / ON
Cond.
Cal.
Conductivity
Probe
OFF
ORP
Test
OFF
ORP
Test
10
9
2
1
Ribbon
Cable for
Relays
SIGNAL
GROUND
+ vdc for opt. 9
Relay / Power Board (Rev. D)
Ribbon Cable
2
1
10
9
POWER INPUT
POWER SUPPLY
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
5A (R1)
5A (R3)
5A (R2)
5A (R4)
5A (R5)
NEU GND
N.O. N.C.
NEU GND
N.O. N.C.
NEU GND
N.O. N.C.
NEU GND
N.O. N.C.
NEU GND
N.O. N.C.
H
N
G
Rev. D
Relay / Power Board (Rev. B)
Ribbon Cable
2
1
10
9
5A
POWER INPUT
H
N
G
Relay 5
5A
5A
Relay 3
5A
Relay 2
NET
GND
N.O.
N.C.
5A
Relay 1
Relay 4
POWER SUPPLY
NET
GND
N.O.
N.C.
NET
GND
N.O.
N.C.
NET
GND
N.O.
N.C.
NET
GND
N.O.
N.C.
Rev B
Relay / Power Board (Rev. C)
Relay 5
Relay 3
Relay 2
Relay 1
Relay 4
POWER SUPPLY
Relay / Power Card (REV D)
Green (-12)
White (+5)
Red (+12)
Black (Gnd)
FUSE
FUSE
FUSE
FUSE
FUSE
1
Relay 1
2
Relay 2
4
Relay 4
3
5
N.O N.C NET GRD
N.O N.C NET GRD
N.O N.C NET GRD
N.O N.C NET GRD
N.O N.C NET GRD
H N G
POWER INPUT
Ribbon Cable
1
2
9
10
Typical Installation
BLOWDOWN
COOLING TOWER
CIRCULATION PUMP
CHILLER
MAKE-UP
WATER METER
BLEED VALVE