6
Back Pane Connections
MT Megatron Main, Rev
. B
Card Slots
1
2
3
4
5
6
7
(H11, H12)
Comm.
Relay Card Outputs
16-20
11-15
6-10
1-5
Incoming
Power
GND
MegaTronMT Back Pane
+12 VDC
for paddlewheel
flowmeters
Displa
y I
n
te
rfac
e
P
o
w
er t
o
displa
y
Gnd
Gnd
-12
-12
+12
+12
+5
+5
Jumper Block
Spare Power
System Card Connections
LED
Red
Black
Green
White
Ground
Drum Level 5
Drum Level 4
Drum Level 3
Ground
Drum Level 2
Drum Level 1
Water Meter Ground
Water Meter 2 Signal
Water Meter 1 Signal
Flow Switch
Black
Red
Red
Black
Standard System Card
ORP
ORP
pH
pH
Note: Use 22 AWG
(.76 mm) twisted
pair shielded wire
for all of these low
voltage signal
connections.
System Conductivity
Temperature
Note: Conductivity
probe’s wire colors
may vary. If so,
match based on
cond and temp.
White
Black
6 conductors plus a
shield must be ran
from the controller
to the probe. Connect
the 4 wires for the
temperature at the
terminal block
supplied with
the sensor
as shown.
Red
Green
Orange
Blue
White
Black
Red
Green