Bảng mã lỗi biến tần Shihlin SF3/ Alarm code for Frequency Converter Shihlin SF3

1.  

2. Code	Display on keypad	Reason	Handling method
   ERROR		ground	the motor
   OC0 Overcurrent when the inverter stops		The output current exceeds twice the rated current of the inverter or the load is short-circuited	The inverter may be affected by external electromagnetic noise. Please improve the wiring. Power off and power on again. If this alarm occurs repeatedly, please send it to the factory for repair. (Note 1)
   OC1 Overcurrent during acceleration			(Note 1)
   OC2 Overcurrent at constant speed
   OC3 Overcurrent during deceleration
   OV0 Overvoltage when the inverter stops		The voltage between terminals (+ / P)-(-/ N) is too high or the motor is leaking to ground; External power lines have large electrical equipment start and stop affecting grid surges	Check whether the input power supply voltage is normal. (Note 1)
   OV1 Overvoltage during acceleration			(Note 1)
   OV2 Overvoltage at constant speed
   OV3 Overvoltage during deceleration
   THT IGBT module overheating		1. IGBT module accumulated heat relay action (overload warning) 2.01-03 (P.3) The setting does not match the rated frequency of the motor. incorrect	/ △) is consistent with the motor nameplate (Note 1)

   1. Insufficient power supply voltage

   2. Reset function RES is “on”

   3. Poor contact between operator and inverter host

   4. Internal circuit failure

   5. CPU malfunction

   6. Abnormal load insulation to

   1. Supplied with normal power

   2. Disconnect the reset switch

   3. Make sure to connect the keypad with the inverter host --

   4. Replace the inverter

   5. Reboot the inverter

   6. Check the insulation of the motor cable and the three-phase winding of

   1. If there is a sudden acceleration or deceleration, please extend the acceleration and deceleration time.

   2. Avoid sharp load increase

   3. Check whether the motor terminals U/T1, V/T2, W/T3 are short-circuited

   1. If there is a sudden acceleration or deceleration, please extend the acceleration and deceleration time.

   2. Check whether the regeneration braking resistor between the main circuit terminal +/P-PR falls off

   3. If the braking resistor is connected, check whether the setting values of 06-05 (P.30) and 06-06 (P.70) are correct.

   4. Check motor insulation to ground

   5. Improve grid quality (recommended input reactor)

   1. Insufficient input power supply voltage of the inverter reduces output capacity

   2. The three-phase input connection of the motor is

   1. Avoid overloading the inverter for a long time

   2. Recheck 01-03 (P.3) and motor rated frequency setting

   3. Check grid voltage

   4. Check whether the motor connection (Y

   5. Check if the carrier frequency 00-11 (P.72) is set too high

    

   THN Motor overheating		Electronic thermal relay action
   FAN Cooling fan abnormal		Cooling fan abnormal	replace it with a new one
   OHT External motor thermal relay operation		External motor thermal relay running	1.Check whether the external thermal relay capacity matches the motor capacity 2.Reduce the load 3.Check whether the external connection signal is disconnected or disconnected
   OPT RS-485 communication port Peripheral malfunction			Correctly set communication related parameters It is recommended to use twisted-pair shielded communication lines and the shielding layer is properly grounded. Check communication procedures
   PUE PU communication port peripheral malfunction
   CbE expanded communication port peripheral malfunction
   EEP Memory malfunction		ROM malfunction	When this alarm occurs frequently, please send it to the factory for maintenance Avoid frequent communication to modify parameters and save target frequency to EEPROM. Refer to 07-11 (P.34) and target frequency communication address H1002 to prevent premature damage.
   PID PID malfunction			system are normal.
   CPU CPU malfunction		Serious peripheral electromagnetic interference	Reduce peripheral interference
   OLS Stall prevention protection		Motor overload
   SCP Overcurrent at short circuit			(Note 1)

   1. Check whether the setting value of 06-00 (P.9) is reasonable and correct (based on the rated current of the external motor)

   2. Reduce the load

   1. The fan is damaged, please replace it with a new one

   2. Foreign object is blocking the fan, please remove the foreign object

   3. Fan wiring is broken / dropped, please

   1. Communication error, exceeding the number of communication error retries

   2. External noise interference

   3. The communication control program logic is unreasonable

   4. Communication is interrupted, exceeding the communication interval allowable time

   1. Insufficient inverter and motor capacity

   2. PID target value or feedback value is not set reasonably

   3. Peripheral equipment failure

   4. The feedback signal is not connected or disconnected during PID control

   1. Replace with high-capacity inverter and motor

   2. Check the feedback gain setting and reset the target value according to the feedback

   3. Check whether the peripheral feedback devices (such as sensors and potentiometers) and wirings of the

   1. Reduce motor load

   2. Increase the value of 06-01 (P.22)

   1. Short circuit on the output side

   2. The inverter incorrectly reports SCP warning

   1. Check whether the inverter output is short-circuited (such as motor wiring)

   2. The inverter may be interfered by external electromagnetic noise. Please improve the wiring.

    

   NTC Module overheating		Inverter-side IGBT module temperature is too high
   NTC2 Module 2 overheating
   NTC3 Module 3 overheating
   NTC4 Module 4 overheating
   NTC5 Module 5 overheating
   NTC6 Module 6 overheating
   OL2 Overtorque malfunction		1.Motor overload 2.Unreasonable setting of 06-08 (P.155) and 06-09 (P.156)
   BE (Note 1) Brake transistor malfunction (Relay malfunction)		Brake transistor malfunction (Relay malfunction)	Please send it to the factory for inspection and maintenance
   IPF Power input failure		Power input failure(Missing phase)	Please check whether the power input is normal
   CPR CPU malfunction		CPU program malfunction
   AEr 4-5/3-5 terminal malfunction		Disconnection malfunction when 4-5/3-5 terminals given by analog	Please refer to parameter description in 02-24 (P.184)/02-33 (P.545)
   PTC Motor overheating		Motor overheating	1.Reduce motor load 2.Modify 06-16 (P.534)
   BEB Material disconnection		Material disconnection	Check whether the signal wirings of material feedback is disconnected
   rAE relay abnormal operation		The main circuit relay is abnormal	Please send to the factory for maintenance
   GF Output short-circuit to ground		Output short-circuit to ground	Please check whether the short circuit to ground of the motor is normal
   LF Output phase loss		The three-phase output malfunction	Please check whether the UVW three-phase output of the inverter is normal
   HDC Hardware detection line malfunction		Hardware detection line malfunction	Please send it to the factory for inspection and maintenance
   ADE Three-phase current sampling circuit malfunction		Three-phase current sampling circuit malfunction	Please send it to the factory for inspection and maintenance
   EbE1 Expansion card SLOT1 malfunction		The first result of inverter automatic detection is inconsistent with the next result	Check the connection of expansion board

   1. Reduce ambient temperature and improve ventilation strips

   2. Check whether the inverter fan is running normally

   3. Check if the carrier frequency 00-11 (P.72) is set too high

   1. Reduce motor load

   2. Adjust the settings of 06-08 (P.155) and 06-09 (P.156) appropriately

   1. Check the wiring

   2. Check the parameter setting

   3. Reduce peripheral interference

    

   dPF Driving power supply for main circuit malfunction

   Driving power supply for main circuit malfunction

   Please send it to the factory for inspection and maintenance

    

   Note 1: Do not power on repeatedly until the cause of the fault is eliminated.

    

    

3.            Troubleshooting‌

    

   Malfunction	Key points
   The motor does not run	Main circuit
   	Load
   	Paramet er settings
   	Control circuit
   Opposite motor rotation direction
   The motor cannot accelerate
   Unsmooth acceleration and deceleration
   Excessive motor current
   Speed fluctuation in operation

   • Is the voltage between terminals R/L1-S/L2-T/L3 normal?

   • Is the POWER light on?

   • Is the wiring between the inverter and the motor correct?

   • Is the load too heavy?

   • Is the motor rotor locked?

   • Is the startup frequency (01-11(P.13)) set too high?

   • Is the operation mode (00-16(P.79)) correct?

   • Is the upper limit frequency (01-00(P.1)) set to zero?

   • Is reverse rotation prevention (00-15(P.78)) limited?

   • Is the signal bias and gain (02-12~02-15, 02-25~02-28/P.192~P.199) correct?

   • Is the frequency jump (01-16~01-21/P.91~P.96) correct?

   • Is MRS function “on”? (relevant parameters 03-00~03-09(P.80~P.84 、 P.86 、P.126~P.128、P.550))

   • Is RES function “on”? (relevant parameters 03-00~03-09(P.80~P.84 、 P.86 、P.126~P.128、P.550))

   • Is the external thermal relay tripping?

   • Is there an alarm (ALARM light is on) that has not been reset?

   • Is the voltage/current signal correctly connected?

   • Are STF and STR functions correct? (relevant parameters (relevant parameters 03-00~03-09(P.80~P.84、P.86、P.126~P.128、P.550))

   • Does the wiring of the control circuit fall off or have poor contact?

   • Is the phase sequence of the wiring of the motor terminal (U/T1)/(V/T2)/(W/T3) correct?

   • Is the wiring of the start terminals STF and STR correct?

   • Is the load too heavy?

   • Is stall prevention level (06-01(P.22)) correct?

   • Is torque compensation (01-10(P.0)) too high?

   • Is it limited by the upper limit frequency (01-00(P.1))?

   • Is the acceleration and deceleration time (01-06(P.7) and 01-07(P.8)) set correctly?

   • Is the acceleration/deceleration curve selection (01-05(P.29)) correct?

   • Does the voltage/current signal fluctuate due to noise?

   • Is the load too heavy?

   • Does the inverter capacity match the motor capacity?

   • Is torque compensation (01-10(P.0)) too high?

   • Does the voltage/current signal fluctuate due to noise?

   • Has the motor load changed?

   • Is the main circuit wiring too long?