The Safe Torque Off Operating Guide provides detailed specifications, requirements, and installation instructions for the Safe Torque Off function. • Supplementary publications and manuals are available from Danfoss, see www.danfoss.com. 1.4 Manual and Software Version This manual is regularly reviewed and updated. All suggestions for improvement are welcome.
Relay 1 (01, 02, 03) LCP connector 1.6 Type Approvals and Certifications The following list is a selection of possible type approvals and certifications for Danfoss drives: N O T I C E Drives of enclosure size T7 (525–690 V) are not UL listed.
Page 47
7.4.15 ALARM 15, Hardware Mismatch Cause A fitted option is not operational with the present control card hardware or software. Troubleshooting Record the value of the following parameters and contact Danfoss. • Parameter 15-40 FC Type. • Parameter 15-41 Power Section.
Page 51
Check that the option is properly installed. • Check for loose or missing wiring. It may be necessary to contact the Danfoss supplier or service department. Note the code number for further troubleshooting direc- tions. Table 28: Internal Fault Codes...
Page 52
Option in slot C0: Hardware incompatible with the control board hardware. 5126 Option in slot C1: Hardware incompatible with the control board hardware. 5376– 6231 Internal fault. Contact the Danfoss supplier or Danfoss service department. 7.4.37 ALARM 39, Heat Sink Sensor Cause No feedback from the heat sink temperature sensor.
Page 54
7.4.47 ALARM 50, AMA Calibration Failed Cause A calibration error has occurred. Troubleshooting • Contact the Danfoss supplier or Danfoss service department. 7.4.48 ALARM 51, AMA Check Unom and Inom Cause The settings for motor voltage, motor current, and motor power are wrong. Troubleshooting •...
Page 56
The control card and power card are incompatible. Troubleshooting • To check compatibility, contact the Danfoss supplier with the type code from the unit nameplate and the part numbers on the cards. 7.4.68 ALARM 71, PTC 1 Safe Stop Cause Because the motor is too warm, the VLT PTC Thermistor Card MCB 112 activated the Safe Torque Off (STO).
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Page 61
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Page 63
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Page 64
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Page 66
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Page 68
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
Page 69
Applies for dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses may increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to Danfoss MyDrive®...
8.7.1 Fuse Recommendations Fuses ensure that possible damage to the drive is limited to damage inside the unit. Danfoss recommends fuses and/or circuit breakers on the supply side as protection. For further information, see Application Note Fuses and Circuit Breakers.
UL COMPLIANCE To comply with NEC 2017, it is mandatory to use fuses or circuit breakers. Danfoss recommends using a selection of the fuses listed in the following tables. These fuses are suitable for use on a circuit capable of delivering 100000 A (symmetrical), 240 V, 480 V, 500 V, or 600 V depending on the drive voltage rating.
Page 92
Danfoss can accept no responsibility for possible errors in catalogs, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.
Need help?
Do you have a question about the VLT AutomationDrive FC 301 and is the answer not in the manual?
Questions and answers