Applications:

• Control and protect universal pump
• Adopting liquid probe, float switch or pressure switch to control pump start and stop
• Applied for water supply by liquid level control through float switch or liquid probe
• Applied for booster by pressure control through pressure switch and pressure tank
• Applied for drainage by liquid level control through float switch or liquid probe
• Applied for sewage pump with piggy-back float switch

Control characteristic:

• Duplex pump control
• Main pump / standby pump automatically alternate
• Main pump / standby pump automatically switch against malfunction
• Standby pump participates running if required

Features:

• Pump last five faults record displaying
• Pump accumulative running time displaying
• Pump shaft anti-rust
• Present RS485 port
• Remote control panel (Optional)
• Push button calibration
• LCD screen displaying pump running status
• Memory function when power off & recovery
• Signal transmission distance up to 1000m
• Overflow alarm for drainage application
• Pump start time delay (Time settable)
• Pump stop time delay (Time settable)
• WIFI module (Optional)
• A/B Pump operation enable or disable function
• LCD screen locked function under auto state (Settable)

Specifications:

MODEL

L522

L532

Main technical data

• Start type
• Qty of controlled pump
• Rated input voltage
• Rated output power

DOL (Direct on line)

Duplex Pump

AC220V/AC230V Single Phase

50HZ/60HZ

0.37kw-2.2kw 90.5hp-3hp)

3-4kw (4hp-5.5hp)

MAX MOTOR

Output 220V 1Ph

Full Load

Max (A)

Starting Current Max (A)

HP

KW

0.5

0.37

18A

90A

0.75

0.55

1.0

0.75

1.5

1.1

2.0

1.5

3.0

2.2

4.0

3.0

25A

125A

5.5

4.0

AC380V/AC400 Three Phase

50HZ/60HZ

0.75kw-4kw (1hp-5.5hp)

5.5kw-11kw (7.5-15hp)

15kw (20hp)

MAX MOTOR

Output 220V 1Ph

Full Load

Max (A)

Starting Current Max (A)

HP

KW

1.0

0.75

12A

60A

1.5

1.1

2.0

1.5

3.0

2.2

5.0

3.0

5.5

4.0

7.5

5.5

25A

125A

10.0

7.5

15.0

11.0

20.0

15.0

32A

160A

Protection Function

• Overload protection
• Pump stalled protection
• Dry run protection with sensor free
• Under voltage protection
• Over voltage protection
• Repeat start protection
• Overload protection
• Pump stalled protection
• Dry run protection with sensor free
• Under voltage protection
• Over voltage protection
• Repeat start protection
• Open phase protection

Main installation data

• Working temperature
• Working humidity
• Degree of protection
• Mounting type
• Unit dimension (L x W x H)

-25°C-- +55°C

20%--90%RH, no drips concreted

IP54

Wall mounting

300× 240×120mm

SET/CTN Packing Size

6 sets/ctn 69*58*46cm

Connectable sensors

Liquid probe (standard accessory) / Float switch / Pressure switch