Danfoss VLT VFD Drive FC 301/302 Warnings and Alarms 1 to 10

In this Article we are going to see Danfoss VLT Drive FC 301/302 Warnings and Alarms 1 to 10.

Danfoss VFD


WARNING-1: (10-Volts low)

Danfoss VLT VFD Drive FC 301/302

  • The control card voltage is less than 10 Volt from terminal 50.
  • Remove some of the load from terminal 50, as the 10 Volt supply is overloaded.
  • Maximum 15 mA or minimum 590 ohm.
  • A short circuit in a connected potentiometer or incorrect wiring of the potentiometer can cause this condition.

 Troubleshooting Methods:

  • Remove the wiring from terminal 50,
  • If the warning clears, the problem is with the wiring,
  • If the warning does not clear, replace the control card.

 

WARNING/ALARM-2: (Live zero error)

Danfoss VLT VFD Drive FC 301/302

  • This warning or alarm only appears if programmed by the user in parameter 6-01 Live Zero Timeout Function.
  • The signal on 1 of the analog inputs is less than 50% of the minimum value programmed for that input.
  • Broken wiring or faulty device sending the signal can cause this condition.

Troubleshooting Methods:

  • Check connections on all the analog input terminals,
  • Control card terminals 53 and 54 for signals, terminal 55 common,
  • VLT General Purpose I/O MCB 101 terminals 11 and 12 for signals, terminal 10 common,
  • VLT Analog I/O MCB 109 terminals 1, 3, 5 for signals, terminals 2, 4, 6 common,
  • Check that the frequency converter programming and switch settings match the analog signal type,
  • Perform Input Terminal Signal Test,

 

WARNING/ALARM-3: (No motor)

Danfoss VLT VFD Drive FC 301/302

  • No motor is connected to the output of the frequency converter.

 

WARNING/ALARM-4: (Mains phase loss)

Danfoss VLT VFD Drive FC 301/302

  • A phase is missing on the supply side, or the mains voltage imbalance is too high.
  • This message also appears for a fault in the input rectifier.
  • Options are programmed in parameter 14-12 Response to Mains Imbalance.

Troubleshooting Methods:

  • Check the supply voltage and supply currents to the frequency converter.

 

WARNING-5: (DC link voltage high)

Danfoss VLT VFD Drive FC 301/302

  • The DC-link voltage is higher than the high-voltage warning limit.
  • The limit depends on the frequency converter voltage rating.
  • The unit is still active.

 

WARNING-6: (DC link voltage low)

Danfoss VLT VFD Drive FC 301/302

  • The DC-link voltage is lower than the low-voltage warning limit.
  • The limit depends on the frequency converter voltage rating.
  • The unit is still active.

 

WARNING/ALARM-7: (DC over voltage)

Danfoss VLT VFD Drive FC 301/302

  • If the DC-link voltage exceeds the limit, the frequency converter trips after some time.

Troubleshooting Methods:

  • Connect a brake resistor.
  • Extend the ramp time.
  • Change the ramp type.
  • Activate the functions in parameter 2-10 Brake Function.
  • Increase parameter 14-26 Trip Delay at Inverter Fault.

 

WARNING/ALARM-8: (DC under voltage)

Danfoss VLT VFD Drive FC 301/302

  • If the DC-link voltage drops below the under voltage limit, the frequency converter checks if a 24 Volt DC back-up supply is connected.
  • If no 24 Volt DC back-up supply is connected, the frequency converter trips after a fixed time delay.
  • The time delay varies with unit size.

Troubleshooting Methods:

  • Check that the supply voltage matches the frequency converter voltage.
  • Perform an input voltage test.
  • Perform a soft charge circuit test.

 

WARNING/ALARM-9: (Inverter overload)

Danfoss VLT VFD Drive FC 301/302

  • The frequency converter has run with more than 100% overload for too long and is about to cut out.
  • The counter for electronic thermal inverter protection issues a warning at 98% and trips at 100% with an alarm.
  • The frequency converter cannot be reset until the counter is below 90%.

Troubleshooting Methods:

  • Compare the output current shown on the LCP with the frequency converter rated current and measured motor current
  • Show the thermal frequency converter load on the LCP and monitor the value.
  • When running above the frequency converter continuous current rating, the counter increases.
  • When running below the frequency converter continuous current rating, the counter decreases.

 

WARNING/ALARM-10: (Motor Overload Temperature)

Danfoss VLT VFD Drive FC 301/302

  • According to the electronic thermal protection (ETR), the motor is too hot.

Select 1 of these options:

  • The frequency converter issues a warning or an alarm when the counter is >90% if parameter 1-90 Motor Thermal Protection is set to warning options.
  • The frequency converter trips when the counter reaches 100% if parameter 1-90 Motor Thermal Protection is set to trip options.
  • The fault occurs when the motor runs with more than 100% overload for too long.

Troubleshooting Methods:

  • Check for motor overheating.
  • Check if the motor is mechanically overloaded.
  • Check that the motor current set in parameter 1-24 Motor Current is correct.
  • Ensure that the motor data in parameters 1-20 to 1-25 is set correctly.
  • If an external fan is in use, check that it is selected in parameter 1-91 Motor External Fan.
  • Running AMA in parameter 1-29 Automatic Motor Adaptation (AMA) tunes the frequency converter to the motor more accurately and reduces thermal loading.

 


Video Link: 

DANFOSS FC 51 VLT Micro drive Settings 1.Danfoss VFD Drive LCP SIMULATOR Tool Overview 2. DANFOSS VLT-6000 HVAC VFD Drive Basic Setting Parameter Part-1 3. DANFOSS INVERTER FC-301/302 Setting Parameters (Part-4) 4. DANFOSS INVERTER FC-301/302 Setting Parameters (Part-3) 5. DANFOSS INVERTER FC-301/302 Setting Parameters (Part-2) 6. DANFOSS INVERTER FC-301/302 Setting Parameters (Part-1) 7. Danfoss VLT VFD Drive FC 301/302 Warnings and Alarms 1-10 Part-1


Other Post Link: 

 


Social Media Link: 

        


Will i hope this Article is useful to you, thank you for Visiting our Blog, Have a great day.

 

 

Comments

Post a Comment

Popular posts from this blog

QElectro Tech Software Overview

Image
  In This Article we are going to see QElectro Tech Software Overview... QElectro Tech QElectroTech QElectroTech is a free software to create electric diagrams. QElectroTech or QET in short is currently available in version 0.80. This Software is Very Effective and Very Useful for Electronic, Electrical, and Instrumentation Department Engineers. Compare to other Diagram Software’s ‘exe’ Setup file of QElectro Tech Software Size is Too Low. There are Lot of Electrical, Electronic and Instrumentation Symbols and elements are in this QElectro Tech software. The Software of Table of Contents is following of ( Basics , Interface , Preferences , Project , Folio , Element , Conductor , Schema , Drawing , Reports , Export and print , Annex etc..) QElectro Tech Documentation 1 QElectro Tech Documentation 2 The QElectro Tech Software contains many collections (Electrical , Logic , Hydraulic , Pneumatic and Energy symbols and Elements) also user can create they own symbols. Anyone can Access
Read More »

Danfoss VLT micro drive FC 51 Name Plate

Image
In this Article, we are going to discuss about what specifications are mentioned on the Danfoss VLT micro drive FC 51 name plate sticker. Welcome to controls and systems blog page, The nameplate sticker is located on the top of each VFD drives and shows the ratings, serial number, warnings catalog number, and other relevant data for each unit. This nameplate sticker is mostly the same in the VLT model VFD drives, with only a few changes in the some VLT model VFD drives. 1 st ROW: ( TYPE CODE ) Position 1 - 3 [FC]-  is Product group, Possible choice is: Frequency converters, Position 4 - 6 [051]  is Series and product type, Possible choice is: Micro Drive, Position 7 - 10  [P]  is Power size, Possible choice is: 0.18 to 22 kilo watt. Position 11 - 12  [S2]  is Mains voltage, Possible choice is: S2 that means Single phase 200 to 240 Volt AC, T2 that means 3-phase, 200 to 240 Volt AC, T4 that means 3-phase, 380 to 480 Volt AC, Position 13 - 15  [E20]  i
Read More »

SIEMENS V20 VFD DRIVE FAULTS CODE LIST PART-1

Image
In this article  we are going to discuss about siemens v20 vfd drive fault Cause and Remedy for this  fault codes ( F1, F2 , F3 , F4 , F5 , F6 , F11 , F12 , F20 , F35 )   SIEMENS V20 DRIVE F1  -  FAULT:    Overcurrent CAUSE : Motor power (P0307) does not correspond to the inverter power (r0206). Motor lead short circuit Earth faults r0949 = 0: Hardware reported r0949 = 1: Software reported r0949 = 22: Hardware reported REMEDY : Check the following: Motor power (P0307) must correspond to inverter power (r0206). Cable length limits must not be exceeded. Motor cable and motor must have no short-circuits or earth faults. Motor parameters must match the motor in use. Value of stator resistance (P0350) must be  correct. Motor must not be obstructed or overloaded. Increase ramp-up time (P1120) Reduce starting boost level (P1312) F2  -  FAULT:  Overvoltage CAUSE : Main supply voltage too high Motor is in regenerative mode r0949 = 0: Hardware reported r0949 = 1 or 2: Software reported REMEDY
Read More »

SIEMENS V20 VFD DRIVE MAIN PARAMETERS LIST

Image
   SIEMENS V20 VFD DRIVE MAIN PARAMETERS LIST This Parameter Setting is Suitable for (  Manual ON/OFF Mode , Auto Frequency Mode , Pot meter Varying Mode ) its Deepened on (0-10)v Dc signal. SIEMENS V20 VFD DRIVE MAIN PARAMETERS LIST   Parameter Setting Description P0003 1 Standard: Allows access into most frequently used parameters P0010 30 Factory setting P0970 1 Resets all parameters P0010 1 Quick commissioning P0100 0 Europe [kW], motor base frequency is 50 Hz P0301 22 Rated motor KW [KW] P0304 415 Rated motor voltage [V] P0305 35 Rated motor current [A] P0307 22 Rated motor power P0308 0.82 Rated motor cosĪ† P0310
Read More »

Siemens RDG400KN Thermostat Parameter List

Image
In This Article we are going to see Siemens RDG400KN Room Thermostat Parameter List. RDG400KN Thermostat Control Parameter Heating only If you wish to change control parameters, proceed as follows: Press Left and Right button simultaneously for at least 3 seconds. Release them and within 2 seconds, press the Right button again for 3 seconds (The display will show P01). Select the required parameter by turning the rotary knob. Press button (OK). The current value of the selected parameter starts blinking and can be changed by turning the rotary knob. Press button (OK) to confirm the adjusted value, or (Esc) to cancel the change. If you wish to adjust additional parameters, repeat step 3 through 5, or press (Esc) to leave the parameter setting mode.
Read More »