Water Tank Level Float Wiring (Optional) - SAJ PDS33 Series User Manual

PDS33 Series

3.2.7 Water tank level float wiring (optional)

Use a floating ball switch to prevent reservoir overflow is recommended. When the
reservoir is full, the pump will stop; when the water level is lower than the low
level, the pump will be restarted. It can prevent the overflow, limit the unnecessary
pump wear. The PDS33 controller allows the use of small signal line to connect to
remote float switch, even if the position of the reservoir is far away.
Floating ball switch request:
1. The minimum requirements for 1 mm² line diameter, the distance up to 50m
2. I f the application is in a long distance transmission, the need to use the shielded
wire. The end of the shielding layer close to the controller needs to be grounded,
the end close to the floating ball switch; the end close to the float switch is not
required to be grounded.
sealed
cable clamp
cable
weight
Figure 9 Floating Ball Diagram
Remote
signal of
float
switch
If the cable is sh ielded，just connec t to ground
Figure 10 Float ball wiring diagram
position
pump off
pumping
range
p osi ti on
p um p on
- 24 -
N0
Float
switch
COM