Danfoss VLT FC 103 User Manual (English)

Other manuals for Danfoss VLT FC 103

Operating182 pages

Programming Guide203 pages

Operating Guide170 pages

Operating Instructions110 pages

Questions and Answers:

C
colleendavisAug 25, 2025
Why is the Danfoss Controller display dark and not functioning?
- W
  wrightmarvinAug 25, 2025
  A dark or non-functioning display on your Danfoss Controller can result from several causes. It could be due to missing input power, so check the input power source. Also, check for missing or open fuses, or a tripped circuit breaker. Ensure there is power to the LCP and that the terminals are wired properly, addressing any shortcuts on the control voltage. Verify you're using the correct LCP (LCP 102, P/N 130B1107). Adjust the contrast by pressing [Status] + [?]/[?]. If the display is defective, replace the LCP or connection cable. For internal voltage supply faults, contact your supplier.
C
Christopher CarterAug 30, 2025
What causes motor current imbalance in Danfoss VLT FC 103 DC Drives?
- J
  jonathansmithAug 30, 2025
  If the motor current imbalance is greater than 3% in your Danfoss DC Drives, the issue might stem from the motor or its wiring. If the imbalanced leg follows the wire, inspect the motor and its wiring. If the problem persists, contact the supplier.
Y
ynewtonSep 4, 2025
Why is my Danfoss Media Converter motor not reaching maximum speed?
- A
  Anthony KerrSep 4, 2025
  If the motor isn't reaching its maximum speed, it could be because the frequency limits are set incorrectly; program the correct limits. Also, the reference input signal might not be scaled correctly, so program the correct settings.
M
Mary FoleySep 4, 2025
Why is my Danfoss Media Converter motor running in the wrong direction?
- R
  Ryan BurgessSep 4, 2025
  If the motor is running in the wrong direction, it could be due to a motor rotation limit, so program the correct settings. It may also be caused by an active reversing signal, so deactivate the reversing signal. Check the motor phase connection.
T
Timothy SantiagoSep 3, 2025
Why does my Danfoss Media Converter keep tripping the circuit breaker?
- C
  carterlindaSep 3, 2025
  If the power fuses keep opening or the circuit breaker trips, it could be due to a phase to phase short, so eliminate any shorts detected. It may also be caused by motor overload, so perform a start-up test and verify the motor current is within specifications. If the motor current exceeds the nameplate full load current, the motor may only run with a reduced load. Also, check for loose connections and tighten them.
J
Jamie RussellSep 3, 2025
What to do if Danfoss Media Converter motor is not running?
- F
  fryejoseSep 3, 2025
  If the motor isn't running, it might be due to several reasons. Check if the service switch is open or if there's a missing motor connection; connect the motor and check the service switch. If you have a 24 V DC option card, ensure line power is applied to run the unit. If the LCP Stop is active, press [Auto On] or [Hand On], depending on the operation mode, to start the motor. Ensure a valid start signal is applied. If the motor coast signal is active, apply 24 V on terminal 27 or program this terminal to No operation. Finally, check that the reference signal source is correctly programmed, including wiring and scaling of terminals.
H
Hannah ThomasSep 3, 2025
Why is the Danfoss Media Converter display dark or not functioning?
- S
  Sydney NormanSep 3, 2025
  The display might be dark or not functioning due to several reasons. It could be due to missing input power, so check the input power source. There might be missing or open fuses, or a tripped circuit breaker. There could be no power to the LCP, in which case you should replace the faulty LCP or connection cable. A shortcut on the control voltage or at control terminals could also be the reason, so wire the terminals properly. Ensure you are using the correct LCP (LCP 101 (P/N 130B1124) or LCP 102 (P/N 130B1107)). Also, check the contrast settings by pressing [Status] + [?]/[?] to adjust the contrast. If the display is defective, replace the LCP or connection cable. In case of an internal voltage supply fault or defective SMPS, contact the supplier.
K
Kristin PattonSep 2, 2025
How to adjust contrast on Danfoss VLT FC 103 DC Drives if the display is dark?
- B
  browningamandaSep 2, 2025
  If the Danfoss DC Drives display is dark because of a wrong contrast setting, you can press [Status] + [?]/[?] to adjust the contrast.
N
Nicholas HebertSep 2, 2025
Why is the display on my Danfoss VLT FC 103 intermittent?
- M
  Mark BaldwinSep 2, 2025
  An intermittent display on Danfoss DC Drives can be caused by an overloaded power supply (SMPS) due to improper control wiring or a fault within the adjustable frequency drive. If the display stays lit, check the control wiring for shorts or incorrect connections. If the display continues to cut out, follow the procedure for a dark display.
R
Roy StanleySep 2, 2025
What to do if the Danfoss VLT FC 103 DC Drives display is dark?
- A
  Amy FitzgeraldSep 2, 2025
  If the Danfoss DC Drives display is dark or has no function, several issues could be the cause. First, check the input power source to ensure it is properly connected. Also, inspect fuses and circuit breakers. If the LCP isn't getting power, replace the faulty LCP or connection cable. Ensure there are no shortcuts on the control voltage (terminal 12 or 50) or at control terminals, and that the terminals are wired properly. Verify that you're using the correct LCP (LCP 101 (P/N 130B1124) or LCP 102 (P/N 130B1107)). Adjust the contrast by pressing [Status] + [?]/[?]. If none of these steps work, the display (LCP) or internal voltage supply may be defective, in which case you should contact your supplier.

Danfoss VLT FC 103 Specifications

General

Protection Class	IP20
Series	VLT FC 103
Input Voltage	380-480 V
Communication Protocols	CANopen
Supply voltage	380-480 V AC
Frequency	50 Hz or 60 Hz
Enclosure	IP20