Danfoss VLT MSD510 Fault Codes List

Access the complete reference guide for Danfoss MSD 510 servo systems. Learn to diagnose PSM 510 power faults, ISD 510 LED status codes, and communication errors via MCT 10.

Danfoss MSD 510 Fault Codes Reference Table

 

Danfoss MSD 510 Fault Codes Reference Table

Fault Code and Meaning fault in Danfoss VLT servo drive MSD510 Fault Code and Meaning fault in Danfoss VLT servo drive MSD510

Cause and Remedy
0x1000 / 0x100 Generic application error fault in Danfoss VLT servo drive MSD510 0x1000 / 0x100 Generic application error fault in Danfoss VLT servo drive MSD510

Cause:

Generic application error.

Remedy:

  • Check application settings and logs.
  • Restart the system.
0x2310 / 0x101 Overcurrent on output fault in Danfoss VLT servo drive MSD510 0x2310 / 0x101 Overcurrent on output fault in Danfoss VLT servo drive MSD510

Cause:

Overcurrent on output.

Remedy:

  • Check motor cables for short circuits.
  • Check motor insulation.
  • Check if the motor load is too high.
0x2311 / 0x15F High current overload fault in Danfoss VLT servo drive MSD510 0x2311 / 0x15F High current overload fault in Danfoss VLT servo drive MSD510

Cause:

High current overload error.

Remedy:

  • Reduce load on the motor.
  • Check drive sizing relative to the load.
0x2312 / 0x160 I²T current overload fault in Danfoss VLT servo drive MSD510 0x2312 / 0x160 I²T current overload fault in Danfoss VLT servo drive MSD510

Cause:

I²T current overload error. The motor or drive thermal limit has been reached.

Remedy:

  • Allow the system to cool down.
  • Check ventilation and ambient temperature.
  • Reduce continuous load.
0x2313 / 0x161 High power overload fault in Danfoss VLT servo drive MSD510 0x2313 / 0x161 High power overload fault in Danfoss VLT servo drive MSD510

Cause:

High power overload error.

Remedy:

  • Check system power requirements.
  • Verify power supply stability.
0x2314 / 0x162 PT power overload fault in Danfoss VLT servo drive MSD510 0x2314 / 0x162 PT power overload fault in Danfoss VLT servo drive MSD510

Cause:

PT power overload error.

Remedy:

  • Check power supply module load.
0x2320 / 0x163 Short circuit fault in Danfoss VLT servo drive MSD510 0x2320 / 0x163 Short circuit fault in Danfoss VLT servo drive MSD510

Cause:

DC overcurrent short circuit error.

Remedy:

  • Check cabling for short circuits.
  • Inspect motor windings.
  • Check internal drive components.
0x2330 / 0x151 Earth leakage fault in Danfoss VLT servo drive MSD510 0x2330 / 0x151 Earth leakage fault in Danfoss VLT servo drive MSD510

Cause:

Current leaking to earth.

Remedy:

  • Check motor and cable insulation.
  • Check for ground faults in the installation.
0x2391 / 0x125 AUX overcurrent fault in Danfoss VLT servo drive MSD510 0x2391 / 0x125 AUX overcurrent fault in Danfoss VLT servo drive MSD510

Cause:

Current on the AUX line has reached the overcurrent limit.

Remedy:

  • Check 24V/AUX supply wiring.
  • Check for short circuits on AUX lines.
0x2393 / 0x127 AUX user limit current fault in Danfoss VLT servo drive MSD510 0x2393 / 0x127 AUX user limit current fault in Danfoss VLT servo drive MSD510

Cause:

Current on the AUX line has reached the user-defined limit for fault.

Remedy:

  • Check load on AUX supply.
  • Adjust user-defined limits if appropriate.
0x2394 / 0x128 AUX user limit current warning fault in Danfoss VLT servo drive MSD510 0x2394 / 0x128 AUX user limit current warning fault in Danfoss VLT servo drive MSD510

Cause:

Current on the AUX line has reached the user-defined limit for warning.

Remedy:

  • Reduce load on AUX supply to prevent tripping.
0x2395 / 0x129 AUX fuse failure fault in Danfoss VLT servo drive MSD510 0x2395 / 0x129 AUX fuse failure fault in Danfoss VLT servo drive MSD510

Cause:

Fuse failure. Current or voltage is above the limit on the AUX line.

Remedy:

  • Check and replace the AUX fuse.
  • Investigate cause of high current/voltage before replacing.
0x2396 / 0x15C DC Overcurrent trip fault in Danfoss VLT servo drive MSD510 0x2396 / 0x15C DC Overcurrent trip fault in Danfoss VLT servo drive MSD510

Cause:

DC overcurrent trip.

Remedy:

  • Check DC link connections.
  • Check for short circuits in the DC bus.
0x2397 / 0x12B Output power trip fault in Danfoss VLT servo drive MSD510 0x2397 / 0x12B Output power trip fault in Danfoss VLT servo drive MSD510

Cause:

The peak output power of the device is exceeded.

Remedy:

  • Reduce dynamic load peaks.
  • Check acceleration ramps.
0x239B / 0x102 I²T overload motor fault in Danfoss VLT servo drive MSD510 0x239B / 0x102 I²T overload motor fault in Danfoss VLT servo drive MSD510

Cause:

I²T overload motor error.

Remedy:

  • Motor is overheating or calculated thermal load is too high.
  • Check motor cooling.
0x3130 / 0x12F Mains phase loss fault in Danfoss VLT servo drive MSD510 0x3130 / 0x12F Mains phase loss fault in Danfoss VLT servo drive MSD510

Cause:

Mains phase loss detected. This occurs when a phase on mains is missing, or when the mains is imbalanced.

Remedy:

  • Check mains supply fuses.
  • Check mains voltage balance.
  • Check input wiring.
0x3210 / 0x103 DC link overvoltage fault in Danfoss VLT servo drive MSD510 0x3210 / 0x103 DC link overvoltage fault in Danfoss VLT servo drive MSD510

Cause:

DC-link voltage exceeds limit.

Remedy:

  • Check for regenerative energy from the motor (braking).
  • Check if braking resistor is connected/functioning.
  • Check mains voltage level.
0x3210 / 0x103 (SW) Overcurrent trip SW fault in Danfoss VLT servo drive MSD510 0x3210 / 0x103 (SW) Overcurrent trip SW fault in Danfoss VLT servo drive MSD510

Cause:

DC-link voltage exceeds limit (Software trip).

Remedy:

  • See remedies for DC link overvoltage.
0x3220 / 0x104 DC link undervoltage fault in Danfoss VLT servo drive MSD510 0x3220 / 0x104 DC link undervoltage fault in Danfoss VLT servo drive MSD510

Cause:

DC-link voltage below limit in "Operation enabled" state.

Remedy:

  • Check mains supply voltage.
  • Check input fuses.
  • Verify pre-charging circuit.
0x3230 / 0x152 UDC charging error fault in Danfoss VLT servo drive MSD510 0x3230 / 0x152 UDC charging error fault in Danfoss VLT servo drive MSD510

Cause:

The maximum time limit to charge the DC-link has been exceeded.

Remedy:

  • Check for short circuit in DC link.
  • Check DC link capacitance.
0x3280 / 0x153 DC Link Voltage unbalanced fault in Danfoss VLT servo drive MSD510 0x3280 / 0x153 DC Link Voltage unbalanced fault in Danfoss VLT servo drive MSD510

Cause:

DC-link voltage unbalanced.

Remedy:

  • Check supply phases.
  • Check DC bus connections between modules.
0x3291 / 0x132 UAUX high voltage fault in Danfoss VLT servo drive MSD510 0x3291 / 0x132 UAUX high voltage fault in Danfoss VLT servo drive MSD510

Cause:

UAUX above warning limit.

Remedy:

  • Check auxiliary power supply voltage.
0x3292 / 0x133 UAUX overvoltage fault in Danfoss VLT servo drive MSD510 0x3292 / 0x133 UAUX overvoltage fault in Danfoss VLT servo drive MSD510

Cause:

UAUX above overvoltage limit.

Remedy:

  • Check auxiliary power supply immediately.
0x3293 / 0x134 UAUX low voltage fault in Danfoss VLT servo drive MSD510 0x3293 / 0x134 UAUX low voltage fault in Danfoss VLT servo drive MSD510

Cause:

UAUX below warning limit.

Remedy:

  • Check auxiliary power supply load and connections.
0x3294 / 0x135 UAUX undervoltage fault in Danfoss VLT servo drive MSD510 0x3294 / 0x135 UAUX undervoltage fault in Danfoss VLT servo drive MSD510

Cause:

UAUX below undervoltage limit.

Remedy:

  • Check auxiliary power supply source.
0x3295 / 0x136 UDC high voltage fault in Danfoss VLT servo drive MSD510 0x3295 / 0x136 UDC high voltage fault in Danfoss VLT servo drive MSD510

Cause:

The DC-link voltage is higher than the high-voltage warning limit.

Remedy:

  • Monitor DC bus voltage.
  • Check braking settings.
0x3296 / 0x137 UDC low voltage fault in Danfoss VLT servo drive MSD510 0x3296 / 0x137 UDC low voltage fault in Danfoss VLT servo drive MSD510

Cause:

The DC-link voltage is lower than the low-voltage warning limit.

Remedy:

  • Monitor mains supply stability.
0x3297 / 0x154 UAUX charging error fault in Danfoss VLT servo drive MSD510 0x3297 / 0x154 UAUX charging error fault in Danfoss VLT servo drive MSD510

Cause:

Load error when UAUX is charging. The maximum time limit to charge the AUX line has been exceeded.

Remedy:

  • Disconnect load on AUX line and retry.
  • Check for shorts on AUX line.
0x3298 / 0x165 UDC shutdown error fault in Danfoss VLT servo drive MSD510 0x3298 / 0x165 UDC shutdown error fault in Danfoss VLT servo drive MSD510

Cause:

Error when UDC is in shutdown phase.

Remedy:

  • Cycle power to the drive.
  • Contact Danfoss service if persists.
0x3299 / 0x155 UAUX shutdown error fault in Danfoss VLT servo drive MSD510 0x3299 / 0x155 UAUX shutdown error fault in Danfoss VLT servo drive MSD510

Cause: Error when UAUX is in shut down phase.
Severity: Error | LCP Name: UAUX shtdwn err


Remedy:
  • Check UAUX supply status.
0x329A / 0x156 UAUX undervoltage hardware fault in Danfoss VLT servo drive MSD510 0x329A / 0x156 UAUX undervoltage hardware fault in Danfoss VLT servo drive MSD510

Cause: UAUX undervoltage detected by hardware circuit.
Severity: Error | Valid for: PSM 510, DAM 510, ACM 510


Remedy:
  • Check auxiliary voltage supply.
  • Check hardware connections.
0x329B / 0x168 Automated fault reset failure fault in Danfoss VLT servo drive MSD510 0x329B / 0x168 Automated fault reset failure fault in Danfoss VLT servo drive MSD510

Cause: Too many auto fault resets have been executed in the intended time interval.
Severity: Trip lock | LCP Name: afr failure


Remedy:
  • Investigate the underlying recurring fault causing the resets.
  • Cycle power to reset the trip lock.
0x4210 / 0x157 Device overtemperature fault in Danfoss VLT servo drive MSD510 0x4210 / 0x157 Device overtemperature fault in Danfoss VLT servo drive MSD510

Cause: Triggered when the maximum temperature of the main device component is exceeded.
PSM: Thyristor rectifier module.
DAM: Maximum temperature of both high side and low side IGBTs.
Severity: Warning, Error | LCP Name: overtemp device


Remedy:
  • Check cooling system and fans.
  • Check for overload conditions.
  • Check ambient temperature.
0x4220 / 0x138 Too low temperature fault in Danfoss VLT servo drive MSD510 0x4220 / 0x138 Too low temperature fault in Danfoss VLT servo drive MSD510

Cause: The device is too cold to operate.
Severity: Error | LCP Name: low temp device


Remedy:
  • Ensure ambient temperature is within specified operating range.
0x4290 / 0x105 Overtemperature: Power module fault in Danfoss VLT servo drive MSD510 0x4290 / 0x105 Overtemperature: Power module fault in Danfoss VLT servo drive MSD510

Cause: Overtemperature on power module.
Severity: Error | Valid for: SDM 511/SDM 512


Remedy:
  • Check power module cooling.
0x4291 / 0x106 Overtemperature: Control card fault in Danfoss VLT servo drive MSD510 0x4291 / 0x106 Overtemperature: Control card fault in Danfoss VLT servo drive MSD510

Cause: Maximum temperature of control card exceeded.
Severity: Error | LCP Name: overtemp CC


Remedy:
  • Check control cabinet ventilation.
0x4292 / 0x107 Overtemperature: Power card fault in Danfoss VLT servo drive MSD510 0x4292 / 0x107 Overtemperature: Power card fault in Danfoss VLT servo drive MSD510

Cause: Maximum temperature of power card exceeded.
Severity: Warning, error | LCP Name: overtemp PC


Remedy:
  • Check device cooling.
0x4293 / 0x13C Inrush overtemperature: DC link fault in Danfoss VLT servo drive MSD510 0x4293 / 0x13C Inrush overtemperature: DC link fault in Danfoss VLT servo drive MSD510

Cause: Inrush fault. Too many transitions into state "Operation enabled" in a short time period.
Severity: Error | LCP Name: inrush UDC


Remedy:
  • Limit the frequency of enabling operation.
  • Check DC link connections.
0x4294 / 0x13D Inrush overtemperature AUX line fault in Danfoss VLT servo drive MSD510 0x4294 / 0x13D Inrush overtemperature AUX line fault in Danfoss VLT servo drive MSD510

Cause: Inrush fault. Too many power-ups of the AUX voltage have occurred within a short time period.
Severity: Error | Valid for: DAM 510


Remedy:
  • Reduce frequency of AUX voltage power cycles.
0x4310 / 0x108 Overtemperature: Motor fault in Danfoss VLT servo drive MSD510 0x4310 / 0x108 Overtemperature: Motor fault in Danfoss VLT servo drive MSD510

Cause: Overtemperature on motor.
Severity: Error | LCP Name: overtemp motor


Remedy:
  • Check motor cooling.
  • Check motor load (overload).
  • Check thermal sensor connection.
0x5112 / 0x109 UAUX undervoltage fault in Danfoss VLT servo drive MSD510 0x5112 / 0x109 UAUX undervoltage fault in Danfoss VLT servo drive MSD510

Cause: Undervoltage on auxiliary voltage.
Severity: Error, trip lock | Valid for: SDM 511/SDM 512


Remedy:
  • Check auxiliary power supply.
0x5121 / 0x158 Charge switch failure voltage fault in Danfoss VLT servo drive MSD510 0x5121 / 0x158 Charge switch failure voltage fault in Danfoss VLT servo drive MSD510

Cause: Indicates a malfunction of the internal charge circuit.
Severity: Trip lock | LCP Name: Chg switch fail


Remedy:
  • Contact service/support (Internal hardware fault).
0x5530 / 0x10A EE Checksum Error (parameter missing) fault in Danfoss VLT servo drive MSD510 0x5530 / 0x10A EE Checksum Error (parameter missing) fault in Danfoss VLT servo drive MSD510

Cause: Missing parameter in internal device configuration.
Severity: Trip lock | LCP Name: config err


Remedy:
  • Re-download configuration or firmware.
  • Contact service if error persists.
0x6320 / 0x10B Parameter error fault in Danfoss VLT servo drive MSD510 0x6320 / 0x10B Parameter error fault in Danfoss VLT servo drive MSD510

Cause: A parameter has an invalid value.
Severity: Trip lock | LCP Name: param err


Remedy:
  • Check parameter settings.
  • Reset parameters to factory default if necessary.
0x6382 / 0x15D Configuration parameters version error fault in Danfoss VLT servo drive MSD510 0x6382 / 0x15D Configuration parameters version error fault in Danfoss VLT servo drive MSD510

Cause: Configuration parameter set version mismatch: parameter set is not valid for this device.
Severity: Trip lock | LCP Name: conf par ver


Remedy:
  • Ensure correct parameter set is loaded for the device version.
0x6383 / 0x164 Configuration parameters limits error fault in Danfoss VLT servo drive MSD510 0x6383 / 0x164 Configuration parameters limits error fault in Danfoss VLT servo drive MSD510

Cause: ≥1 parameter in the configuration parameter set is out of limits: the parameter set is not valid for this device.
Severity: Trip lock | LCP Name: conf par lim


Remedy:
  • Check parameter values against allowed limits.
0x6384 / 0x166 Power EEprom configuration error fault in Danfoss VLT servo drive MSD510 0x6384 / 0x166 Power EEprom configuration error fault in Danfoss VLT servo drive MSD510

Cause: The power device Eeprom is corrupt or incompatible with this control board.
Severity: Trip lock | LCP Name: conf par EEPROM


Remedy:
  • Contact service/support (Hardware incompatibility or corruption).
0x7111 / 0x141 Brake chopper failure fault in Danfoss VLT servo drive MSD510 0x7111 / 0x141 Brake chopper failure fault in Danfoss VLT servo drive MSD510

Cause: The brake chopper is monitored during operation. A brake failure has been detected by the brake check function.
Severity: Warning, error | Valid for: PSM 510


Remedy:
  • Check brake chopper circuit.
  • Check brake resistor connection.
0x7112 / 0x167 Brake chopper overcurrent fault in Danfoss VLT servo drive MSD510 0x7112 / 0x167 Brake chopper overcurrent fault in Danfoss VLT servo drive MSD510

Cause: The brake chopper current exceeds the limit.
Severity: Trip lock | LCP Name: brake ch overcurr


Remedy:
  • Check for short circuit in brake resistor or cable.
  • Check brake resistor resistance value.
0x7181 / 0x142 Brake resistor maximum power limit fault in Danfoss VLT servo drive MSD510 0x7181 / 0x142 Brake resistor maximum power limit fault in Danfoss VLT servo drive MSD510

Cause: The brake resistor maximum power limit is exceeded.
Severity: Warning, error | LCP Name: brake pwr lim


Remedy:
  • Check application regeneration requirements.
  • Verify brake resistor sizing.
0x7182 / 0x143 Brake resistor user power limit fault in Danfoss VLT servo drive MSD510 0x7182 / 0x143 Brake resistor user power limit fault in Danfoss VLT servo drive MSD510

Cause: The brake resistor power limit is exceeded.
The power transmitted to the brake resistor is calculated as an average value over the last 300 s of run time.
Calculation is based on DC-link voltage and brake resistor value set in parameter 2-16.
Severity: Warning, error | LCP Name: brake usr pwr lim


Remedy:
  • Check load cycle and braking duty.
  • Check parameter 2-16 settings.
0x7183 / 0x159 Brake mains voltage too high fault in Danfoss VLT servo drive MSD510 0x7183 / 0x159 Brake mains voltage too high fault in Danfoss VLT servo drive MSD510

Cause: The brake resistor mains voltage is too high.
Severity: Warning | LCP Name: brake volt high


Remedy:
  • Check mains supply voltage.
0x7320 / 0x10C Internal position sensor error fault in Danfoss VLT servo drive MSD510 0x7320 / 0x10C Internal position sensor error fault in Danfoss VLT servo drive MSD510

Cause: Absolute position sensor error.
Severity: Trip lock | LCP Name: int sensor err


Remedy:
  • Check internal sensor connections (if accessible).
  • Replace unit if hardware failure.
0x7380 / 0x10D External position sensor error fault in Danfoss VLT servo drive MSD510 0x7380 / 0x10D External position sensor error fault in Danfoss VLT servo drive MSD510

Cause: External encoder data could not be read.
Severity: Error | LCP Name: ext sensor err


Remedy:
  • Check external encoder connections and cabling.
  • Check encoder power supply.
0x8611 / 0x10E Following error fault in Danfoss VLT servo drive MSD510 0x8611 / 0x10E Following error fault in Danfoss VLT servo drive MSD510

Cause: A following error has occurred.
Severity: Warning, error | LCP Name: following err


Remedy:
  • Check control loop tuning.
  • Check for mechanical blocking or high friction.
0x8693 / 0x10F Homing error on entering homing mode fault in Danfoss VLT servo drive MSD510 0x8693 / 0x10F Homing error on entering homing mode fault in Danfoss VLT servo drive MSD510

Cause: Could not enter homing mode (for example velocity not 0).
Severity: Warning | LCP Name: Homing mode fail


Remedy:
  • Ensure motor is stopped before starting homing.
0x8694 / 0x110 Homing error on start homing method fault in Danfoss VLT servo drive MSD510 0x8694 / 0x110 Homing error on start homing method fault in Danfoss VLT servo drive MSD510

Cause: Could not start homing method (for example drive not in standstill).
Severity: Warning | LCP Name: Homing method fail


Remedy:
  • Ensure drive status allows for homing initiation.
0x8695 (0x111) Homing error distance fault in Danfoss VLT servo drive MSD510 0x8695 (0x111) Homing error distance fault in Danfoss VLT servo drive MSD510

Cause: Homing distance reached.

Remedy:
  • Severity: Warning
  • Check homing parameters and distance settings.
  • LCP Name: Homing distance
0xFF01 (0x112) Mechanical brake failure fault in Danfoss VLT servo drive MSD510 0xFF01 (0x112) Mechanical brake failure fault in Danfoss VLT servo drive MSD510

Cause: No brake or wire failure detected.

Remedy:
  • Severity: Trip lock
  • Check mechanical brake wiring.
  • Check brake connection.
  • LCP Name: brake mech fail
0xFF02 (0x113) Short circuit in mechanical brake control fault in Danfoss VLT servo drive MSD510 0xFF02 (0x113) Short circuit in mechanical brake control fault in Danfoss VLT servo drive MSD510

Cause: Short circuit in brake control.

Remedy:
  • Severity: Trip lock
  • Check for short circuits in the brake cabling.
  • LCP Name: brake mech short
0xFF0A (0x114) External interface power failure fault in Danfoss VLT servo drive MSD510 0xFF0A (0x114) External interface power failure fault in Danfoss VLT servo drive MSD510

Cause: External interface power supply failure.

Remedy:
  • Severity: Error
  • Check external power supply connections.
  • LCP Name: ext IF pwr fail
0xFF10 (0x14F) Communication interrupted fault in Danfoss VLT servo drive MSD510 0xFF10 (0x14F) Communication interrupted fault in Danfoss VLT servo drive MSD510

Cause: The fieldbus communication has been interrupted while the device was enabled.

Remedy:
  • Severity: Error
  • Check fieldbus cabling and master.
  • LCP Name: Comm interrupt
0xFF21 (0x145) Fan feedback inconsistent fault in Danfoss VLT servo drive MSD510 0xFF21 (0x145) Fan feedback inconsistent fault in Danfoss VLT servo drive MSD510

Cause: Internal fan fault. Internal fan not running/mounted.

Remedy:
  • Severity: Warning
  • Check if the fan is blocked or disconnected.
  • Replace fan if necessary.
  • LCP Name: fan feedback
0xFF22 (0x15A) Fan lifetime critical fault in Danfoss VLT servo drive MSD510 0xFF22 (0x15A) Fan lifetime critical fault in Danfoss VLT servo drive MSD510

Cause: The theoretical lifetime of the fan has been exceeded.

Remedy:
  • Severity: Warning
  • Plan to replace the fan.
  • LCP Name: fan lifetime
0xFF60 (0x115) Timing violation 1 fault in Danfoss VLT servo drive MSD510 0xFF60 (0x115) Timing violation 1 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 1
0xFF61 (0x116) Timing violation 2 fault in Danfoss VLT servo drive MSD510 0xFF61 (0x116) Timing violation 2 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 2
0xFF62 (0x117) Timing violation 3 fault in Danfoss VLT servo drive MSD510 0xFF62 (0x117) Timing violation 3 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 3
0xFF63 (0x118) Timing violation 4 fault in Danfoss VLT servo drive MSD510 0xFF63 (0x118) Timing violation 4 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 4
0xFF64 (0x119) Timing violation 5 fault in Danfoss VLT servo drive MSD510 0xFF64 (0x119) Timing violation 5 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 5
0xFF65 (0x11A) Timing violation 6 fault in Danfoss VLT servo drive MSD510 0xFF65 (0x11A) Timing violation 6 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 6
0xFF66 (0x168) Timing violation 7 fault in Danfoss VLT servo drive MSD510 0xFF66 (0x168) Timing violation 7 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 7
0xFF67 (0x16B) Timing violation 8 fault in Danfoss VLT servo drive MSD510 0xFF67 (0x16B) Timing violation 8 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 8
0xFF68 (0x16C) Timing violation 9 fault in Danfoss VLT servo drive MSD510 0xFF68 (0x16C) Timing violation 9 fault in Danfoss VLT servo drive MSD510

Cause: Internal timing violation detected.

Remedy:
  • Severity: Trip lock
  • Contact Danfoss.
  • LCP Name: timing err 9
0xFF70 (0x11B) Firmware: Package description mismatch fault in Danfoss VLT servo drive MSD510 0xFF70 (0x11B) Firmware: Package description mismatch fault in Danfoss VLT servo drive MSD510

Cause: The firmware found does not match the package description.

Remedy:
  • Severity: Trip lock
  • Check firmware version and package.
  • LCP Name: FW pack err
0xFF71 (0x11C) Firmware: Power cycle needed fault in Danfoss VLT servo drive MSD510 0xFF71 (0x11C) Firmware: Power cycle needed fault in Danfoss VLT servo drive MSD510

Cause: The firmware update transfer is completed but a power cycle is required before the new firmware is active.

Remedy:
  • Severity: Warning, error
  • Perform a power cycle (Power Off/On).
  • LCP Name: need power cycle
0xFF72 (0x11D) Firmware: Update started fault in Danfoss VLT servo drive MSD510 0xFF72 (0x11D) Firmware: Update started fault in Danfoss VLT servo drive MSD510

Cause: Firmware update is in progress. Warning changes to error when an attempt is made to enable the device in this state.

Remedy:
  • Severity: Warning, error
  • Wait for update to complete.
  • Do not enable the device.
  • LCP Name: FW update
0xFF73 (0x15B) Firmware: Update invalid fault in Danfoss VLT servo drive MSD510 0xFF73 (0x15B) Firmware: Update invalid fault in Danfoss VLT servo drive MSD510

Cause: Invalid or corrupted firmware package update. Last valid firmware package has been loaded.

Remedy:
  • Severity: Error
  • Retry firmware update with a valid package.
  • LCP Name: FW upd invalid
0xFF80 (0x11E) STO active while drive enabled fault in Danfoss VLT servo drive MSD510 0xFF80 (0x11E) STO active while drive enabled fault in Danfoss VLT servo drive MSD510

Cause: STO activated while drive was enabled or tried to enable while STO active.

Remedy:
  • Severity: Error
  • Ensure STO signals are correct before enabling drive.
  • LCP Name: STO active
0xFF81 (0x11F) STO mismatch fault in Danfoss VLT servo drive MSD510 0xFF81 (0x11F) STO mismatch fault in Danfoss VLT servo drive MSD510

Cause: Dual diagnosis of STO voltage not plausible.

Remedy:
  • Severity: Trip lock
  • Check STO wiring and channels.
  • LCP Name: STO mismatch
0xFF85 (0x120) P_STO error fault in Danfoss VLT servo drive MSD510 0xFF85 (0x120) P_STO error fault in Danfoss VLT servo drive MSD510

Cause: P_STO voltage on the power card exceeds the limits.

Remedy:
  • Severity: Trip lock
  • Check power card supply voltages.
  • LCP Name: P_STO error
0xFF90 (0x121) Guide value reversed fault in Danfoss VLT servo drive MSD510 0xFF90 (0x121) Guide value reversed fault in Danfoss VLT servo drive MSD510

Cause: Position guide value went backwards while the servo drive was in CAM mode.

Remedy:
  • Severity: Error
  • Check CAM profile generation.
  • LCP Name: guide val rev
0xFF91 (0x122) Guide value implausible fault in Danfoss VLT servo drive MSD510 0xFF91 (0x122) Guide value implausible fault in Danfoss VLT servo drive MSD510

Cause: Increments between succeeding values too large.

Remedy:
  • Severity: Error
  • Check setpoints and guide value generation.
  • LCP Name: guide val impl
0xFF95 (0x14E) Sign of life error fault in Danfoss VLT servo drive MSD510 0xFF95 (0x14E) Sign of life error fault in Danfoss VLT servo drive MSD510

Cause: Sign of life error detected.

Remedy:
  • Severity: Error
  • Check communication or internal health.
  • LCP Name: SOL error

How to Read MSD 510 Faults via MCT 10 & LEDs

Troubleshooting a distributed servo system requires a different approach than standard VFDs. In 2026, you must look at both the power supply and the individual motor nodes:

  • MCT 10 (Motion Control Tool): This is the primary software interface. Connect via the Ethernet port on the gateway or PSM.
    • Scope Function: Critical for analyzing motion profiles. If an ISD 510 trips on “Position Error,” the Scope can overlay the Command Position vs. Actual Position to identify mechanical binding.
    • System Overview: MCT 10 visualizes the entire topology, helping you pinpoint exactly which servo in the daisy-chain has failed.
  • ISD 510 Status LEDs: Each servo motor has two LEDs (Status and Link) on the back.
    • Solid Red: Hardware Fault (Internal failure).
    • Flashing Red: Application Fault (e.g., Following Error or Overload).
    • Flashing Green/Red: Auto-configuring or identifying.
  • PSM 510 (Power Supply): If the PSM fails, the entire servo line stops. Check the 7-segment display on the PSM faceplate for codes related to DC Link Voltage or Mains Supply.

Frequently Asked Questions (FAQ)

Q: What is “Alarm 244” (Hybrid Cable Error)?

A: The MSD 510 uses a specialized Hybrid Cable that carries both 600V DC power and Ethernet communications.

  • Cause: This alarm indicates a break in the communication line or power wires within the hybrid cable.
  • Troubleshooting: Since these cables move with the machine, check the drag chains for wear or tight bend radii that may have severed the internal cores.

Q: How do I reset a Danfoss MSD 510 fault?

A:

  1. Fieldbus (PLC): Send the “Reset” bit in the Control Word (via PROFINET, POWERLINK, or EtherCAT). This is the standard method for decentralized drives.
  2. MCT 10: Use the “Reset” command within the software dashboard.
  3. Power Cycle: For “Trip Lock” faults (like Short Circuit), you must cycle the 400V mains to the PSM 510.

Q: Why does a single ISD 510 servo keep tripping on Overvoltage?

A: In the MSD 510 system, all servos share a common DC bus.

  • If one motor brakes heavily, it pushes energy back to the PSM.
  • If the PSM 510 cannot absorb this energy (or return it to the grid if it’s an Active Front End), the DC bus voltage rises.
  • Check if the PSM is sized correctly for the regenerative load of the entire system.

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