Water Level Controller

AT2 water pump controller applies for many kinds of pump, such as submersible pump, slush pump, centrifugal pump, stage pump, well pump and so on, the input voltage isAC220V(50-60Hz), ±10%, SINGLE PHASE and matching motor power can be from 0.37KW to 2.2kw. 

Control Method
Control water supply by probe
Control water supply by float switch
Control water supply by pressure gauge and pressure tank
Control water drainage by probe
Control water drainage by float switch 
Control water drainage by no load setting

Advantages
 
Ø  Works by digital chips.
Ø  Act the function of up/down liquid level and pressure control into a role.
Ø  Patent technical, monitor with AC digital signal.
Ø  Easy to installation and with friendly interface.

Features
Auto  and Manual working mode
 Dry running protection or called no load protection, means the motor will stop while the motor rotate with no load
Over load protection or called over current protection
Ultra low voltage protection
Pump stalled protection
Digital Voltage and  Current display
Recovery time of no load be adjusted from 1-240 minutes
The latest 5 failures query
Friendly wire connection
AC digital signal monitor function with patent
Humanization design
Easy installation and simple debug

Main Technical Data
Rated input voltage and phase: AC220V/50-60Hz,±10%
Rated output power of motor: 0.37-2.2KW
Static power wastage:<3.5W
Dynamic power wastage:<4.5W
Ultra low voltage trip voltage: <140V
Ultra low voltage trip response time: ≤20 SEC
Stalled trip response time: ≤5 SEC
No load trip response time: ≤20 SEC
Over load reverse lag response time: 1-50 SEC
Error range of response time against over load reverse lag response time:±15%
Liquid level control style:AC digital signal monitor by probe, float switch
The longest control distance:≤500M
 
Water Supply by Probe
1) Please switch 'Pressure /Liquid level' to 'Liquid level', and switch 'water supply /water drainage' to 'water supply'.
2)The motor starts while the water in the water supply tank drops to the MID level.
3)The motor stops while the water in the water supply tank reaches the high level, the low level probe works as loop.

Water Drainage by Probe 
1) Please switch 'Pressure /Liquid level' to 'Liquid level', and switch 'water supply /water drainage' to 'water drainage'.
2)The motor starts while the water in the water drainage tank reaches the high level.
3) The motor stops while the water in the water drainage tank drops to the MID level, the low level probe works as loop.(No load current be set up 0.00A)
Because the sewage has strong corrosiveness, we suggest that equip with float switch for monitoring while enable 'water drainage' function for draining sewage.

Water Supply by Pressure Tank 
1) Please switch 'Pressure /Liquid level' to 'Pressure', and switch 'water supply/water drainage' to 'water supply'.
2)The motor starts while pressure drops to min. pressure contactor.
3) The motor stops while pressure rises to max. pressure contactor, the movable contactor works as loop.
The pressure tank volumnshouldbe appropriat.Otherwise, the pump will restart frequently.

Water Supply by Float Switch 
1) Please switch 'Pressure /Liquid level' to 'Liquid level', and switch 'water supply /water drainage' to 'water supply'.
2)The motor starts while the float switch drops to the bottom of water supply tank.
3)The motor stops while the float switch rises to the top of water supply tank.

Water Drainage by Float Switch 
1) Please switch 'Pressure /Liquid level' to 'Liquid level', and switch 'water supply /water drainage' to 'water drainage'.
2)The motor starts while the float switch rises to the top of water supply tank.
3)The motor stops while the float switch drops to the bottom of water supply tank.