TriContinent C24000, Product Manual

Page: 27 / 144

Make electrical connections
C-Series Product Manual
27
RS485 cabling
This would typically go from a PC USB port through the optional USB-
to-RS485 converter to the RS485 bus. However, it can also come directly
from an RS485 host controller.
Figure 4-6. RS485 communication and power cabling
J9 J9
J9
RS485
Terminations
J9
J9
Location
Pump Bottom View
(2)
J3
SW1
Device 3
8
7
6
5
4
3
2
1 0
F
E
D
C
B
A
9
(0)
J3
SW1
Device 1
8
7
6
5
4
3
2
1 0
F
E
D
C
B
A
9
Device 15
(E)
J3
SW1
8
7
6
5
4
3
2
1 0
F
E
D
C
B
A
9
(1)
J3
SW1
Device 2
8
7
6
5
4
3
2
1 0
F
E
D
C
B
A
9
+ -
Power Supply 24VDC
+24V
Ground
+24V
+24V
Ground
Ground
RS 485A
RS 485A
RS 485B
RS 485B
Single-pump Installations:
Make input and power connections as shown
for Device 1.
Leave RS485 termination jumpers installed.
Power
to next
device
Power
from
previous
device
+24V
Gnd
+24V
Gnd
Power Cabling Recommendations
• Cables 24 AWG or heavier, as short as practical.
• Use one power cable for every two pumps as shown.
However, a single power bus may be used if wire is
sized for total current requirements and voltage
drops.
• Twist wires together on cable pairs leading from
power supply directly to pump.
RS485
Host Controller
or USB-to-RS485
Converter
CAUTION: Do not place switches in line with the DC
input of the pumps to apply and remove power.