a. Digital input
7. PROTECTION AND FAILURE
continue EXTERNAL CONTROL
Running capacity is determined by the state of digital input, (5 pin)
When PIN4 connect with PIN5, the pump will be mandatory to stop; if disconnected, the digital controller will be invalid;
When PIN3 connect with PIN5, the pump will be mandatory to run at 100%; if disconnected, the control priority will be back on panel control;
When PIN2 connect with PIN5, the pump will be mandatory to run at 80%; if disconnected, the control priority will be back on panel control;
When PIN1 connect with PIN5, the pump will be mandatory to run at 40%; if disconnected, the control priority will be back on panel control;
The capacity of inputs (PIN1/PIN2/PIN3) could be mod
fi
ed according to the parameter setting..
7.1 High Temperature Warning and Speed Reduction
In “Auto-Inverter/Manual-Inverter Mode” and “Timer mode” (except backwash/self-priming), when the pump control system reaches the
high temperature warning trigger threshold (81
°
C), it enters the high temperature warning state; when the temperature drops from the high
temperature warning release threshold (78
°
C), the high temperature warning state is released. The display area alternately displays AL01
and running speed or flow.
1)
If AL01 displayed for the
fi
t time, the running capacity will be automatically reduced as below:
a.
If current operating capacity is higher than 85%, the running capacity will be automatically reduced by 15%;
b.
If current operating capacity is higher than 70%, the running capacity will be automatically reduced by 10%;
c.
If current operating capacity is lower than 70%, the running capacity will be automatically reduced by 5%.
2)
Suggestion for non-
fi
t displayed of AL01: check the module temperature every 2 minutes. Compared with the temperature in the
previous period, for every 1-degree Celsius increase, the speed will decrease by 5%.
7.2 Undervoltage protection
When the device detects that the input voltage is less than 200V, the device will limit the current running speed
When input voltage is less than or equal to 180V, the running capacity will be limited to 70%;
When the input voltage range is within 180V ~ 190V, the running capacity will be limited to 75%;
When the input voltage range is within 190V ~ 200V, the running capacity will be limited to 85%.
7.3 Troubleshooting
b. RS485:
To connect with PIN6 and PIN7, the pump could be controlled via Modbus 485 communication protocol.
c. Relay output (optional):
Connect terminal L & N to enable external control. An additional on-off Relay is necessary while bearing power is greater than 500W (2.5A).
Problem
Possible causes and solution
Pump does not start.
Pump does not prime.
Low Water Flow.
• Power Supply fault, disconnected or defective wiring.
• Fuses blown or thermal overload open.
• Check the rotation of the motor shaft for free movement and lack of obstruction.
• Because of long time lying idle. Unplug the power supply and manually rotate motor rear shaft a
few times with a screwdriver.
fi
of cover is clean.
• Loose connections on the suction side.
• Strainer basket or skimmer basket loaded with debris.
• Suction side clogged.
• Distance between pump inlet and liquid level is higher than 2m, height of pump installation should
be lowered.
• Pump does not prime.
• Air entering suction piping.
• Basket full of debris.
• Inadequate water level in pool.
Pump being noisy
• Air leak in suction piping, cavitation caused by restricted or undersized suction line or
leak at any joint, low water level in pool, and restricted discharge return lines.
• Vibration caused by improper installation, etc.
• Damaged motor bearing or impeller (need to contact the supplier for repair).
8
