11
B503DSL-4180
400
150
B503DSL-4200
630
185
B503DSL-4250
630
185
B503DSL-4280
630
240
B503DSL-4300
800
150x2
B503DSL-4340
800
150x2
B503DSL-4380
1000
185x2
B503DSL-4430
1200
240x2
Please contact company for other specification.
3.5 The wiring of water-level automatic control
3.5.1 The wiring to prevent pump from anhydrous idling
3.5.1.1 The wiring for floater water-level switch connected by cable
The common port, which using floater water-level switch connected by cable, is fed to
the terminal “COM” of B503DSL controller. And then, select NO (Normally Open )and
connect to “S1” (S1and S2 connected together ). If the NC was connected to “S1”, the
parameter “F0.12 ” should be set as follow: S1=1, S2=1.
Figure 3.4 The low water-level
Figure 3.5 The high water-level
Remarks:
When the actual water-level in the wells is higher than the horizontal line of high
water-level, “S1” and “S2” will be connected to the “COM” as well as controller automatically
will start the pump.On the contrary, if the actual water-level is lower than the horizontal line of
low water-level, “S1” and “S2” will be disconnected from “COM” as well as controller
automatically stop the pump to prevent anhydrous idling.
3.5.1.2 The wiring for floater water-level switch connected by rod
The floater water-level switch connected by rod is the normally open contact to output
Low water-level
High water-level
