PRODUCT
We specialize in water pump controller and accessories production.
SL-T21
This product is primarily designed for the protection and control of a directly started single- phase sewage lifting pump .
Category：
Product Details
To avoid personal injury or product damage caused by improper operation , please read the product manual carefully before operating or using this product. Operation should only commence after a detailed understanding of the product has been obtained.
This product is primarily designed for the protection and control of a directly started single- phase sewage lifting pump . It provides protection functions such as under voltage , over voltage , dry running , overload , and locked rotor during both manual and automatic control modes . Equipped with a high-level alarm float switch interface , it supports automatic control via float switches or pneumatic sensors .
Attention: In case of thunderstorm , please be sure to turn off the power.
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Please strictly follow the instructions for correct installation and use . If the following situations occur, the company will not bear any property loss and legal liability for any failure or loss . 1 . Self-assembled or modified controller. 2 . Controller failure or damage caused by severe weather such as thunderstorms . 3. Use a generator as input power. 4 . When the controller shuts down due to protective action , it is forced to run without manual troubleshooting. 5. The controller cannot work normally due to power outages . In order to better protect personal and equipment safety, please read the following warnings carefully: 1 . The controller does not have leakage protection function . 2 . The controller must be installed away from the inverter. 3. The liquid level detection line cannot be passed through a metal pipe , and cannot be passed through the same pipeline with the strong power cable . At the same time , the spacing between strong and weak power wiring is not less than 30cm . Due to unlicensed operation or non-standard construction , installation is not carried out in accordance with the requirements of our company's product manual , resulting in the failure of the controller to work properly. Any losses caused , our company is not responsible and does not bear any legal liability and economic expenses! |
Warning
This product is suitable for normal working environment , avoid installation in the following environment:
Technology parameter
- Rated output power: Single-phase 0 .37 - 2 .2kW (as per the machine nameplate )
- Rated working voltage: Single-phase AC 220V/50Hz (as per the machine nameplate )
- Dry run protection action time: Default value 6 seconds , adjustable from 1 to 20 seconds
- Dry run protection recovery time: Default value 10 minutes , adjustable from 1 to 15 minutes
- Overcurrent action time: 5 - 150 seconds ( inverse time characteristic - the greater the current , the shorter the action time)
- Overcurrent fault recovery time: Default value 5 minutes , adjustable from 1 to 10 minutes
- Stall action time: Less than 0. 15 seconds
- Short circuit action time: Less than 0. 15 seconds
- Trip voltage of under voltage:Below the rated voltage by 80% , adjustable from 170 to 200V
- Trip voltage of over voltage: Above the rated voltage by 115% , adjustable from 240 to 280V
- Under-voltage and over-voltage action time: Default value 6 seconds , adjustable from 2 to 100 seconds
- Under-voltage and over-voltage recovery time: Default value 2 minutes , adjustable from 1 to 10 minutes
- Liquid level transmission distance: 1000 meters
- RS485 transmission distance: 1200 meters (twisted shielded cable SIP-120 Ω )
PRODUCT FEATURE
- IP65 level of protection grade
- Touch LCD screen for dynamic real-time display, with automatic screen-off energy saving
- Dynamic sound and light alarm for faults
- Power failure memory and power recovery function in automatic mode
- Automatic setting function for current protection parameters
- Multi-functional protection (dry run , over current , pump stalled , over voltage , under voltage , short circuit , etc . )
- Delayed start function
- Delayed stop function
- Frequent start protection
- Ultra-high water level sound and light alarm , automatic dual-pump activation
- RS485 communication
- Remote monitoring (optional)
- Pump rust-proof jog function; configurable inspection cycle and jog operation duration
- Enable function; can disable any one pump from operation
- Query of the last 10 faults
- Ultra-high water level delayed pump stop function (air pressure controller)
- Real-time liquid level depth display with liquid level compensation function (air pressure controller)
- Automatic verification of liquid level setting rationality (air pressure controller)
- Compatible with float control mode; can switch to float control mode (air pressure controller)
- Regular emptying function; configurable emptying cycle and emptying operation duration (air pressure controller)
TROUBLE SHOOTING GUIDE
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Fault message on LCD screen |
Posible cause |
Solutions |
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The water pump and power supply are normal , but an over current protection occurs immediately upon startup . |
Incorrect setting , motor power exceeding the controller's rated power, pump overload |
Carry out parameter setting or parameter tuning |
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No response after power-on . |
Abnormal power supply or abnormal wiring. |
Check the power supply or wiring. |
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"OFF/ON" button turns gray in color and cannot be clicked to start the water pump . |
The controller is in automatic mode or The single pump mode has been enabled |
Switch to manual mode or cancel the single pump mode and change to the dual pump mode |
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Appear “ DRY RUN ” |
The liquid level in the sewage tank is lower than that of the pump . The impeller is submerged in water. |
The controller will stop the pump or wait for 10 minutes before automatically restoring it. ( Default duration) |
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Appear “ OVER LORD ” |
Pump over load protection caused by impeller stuck ,foreign matter, etc . |
The controller stops the pump or waits 5 minutes for automatic recovery. |
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Appear “ PUMP STALLED ” |
The pump is severely over load or stalled |
Check whether the impeller of the pump is stuck or if the power is mismatched. |
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Appear “ UNDER V ” |
Low voltage causes protection |
The controller recovers automatically after 2 minutes |
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Appear “ OVER V ” |
High voltage causes protection |
The controller recovers automatically after 2 minutes |
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Fault message on LCD screen |
Posible cause |
Solutions |
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Appear “Pump Failure ” |
The water pump is not connected or is damaged |
Connect the water pump or replace the water pump |
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Appear“ Float Failure ” |
Float abnormality or stuck |
Replace or reset the float switch position . |
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Add: 7th Floor, 1 Block, No.41 YanNong Rd, Hi-Tech Zone, Yue Lu District, Changsha, Hunan, China.
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