Danfoss VLT ISD 510 Operating Manual page 157

VLT® Servo Drive System ISD 510/DSD 510
Operating Guide
9.2.1.10 Drive Speed Drops Sharply under Load
Possible Cause
• Drive is running at current limit.
• Drive is running with incorrect parameters.
Troubleshooting
• Check the application.
• Check the parameter settings.
9.2.1.11 Brake not Releasing
Possible Cause
• Defective brake control.
• Incorrect mechanical brake parameters.
Troubleshooting
• Check the parameter settings.
• Contact Danfoss.
9.2.1.12 Holding Brake not Holding the Servo Drive
Possible Cause
• Mechanical brake defective.
• Shaft load exceeds the holding torque of the brake.
Troubleshooting
• Contact Danfoss.
9.2.1.13 Delayed Brake Engagement
Possible Cause
• Software error.
Troubleshooting
• Contact Danfoss.
9.2.1.14 Noises when Power-Off Brake is Engaged
Possible Cause
• Mechanical brake damaged.
Troubleshooting
• Contact Danfoss.
9.2.1.15 LEDs not Lighting Up
Possible Cause
• No power supply.
Troubleshooting
• Check the power supply.
9.2.1.16 Drive Protection Trips Immediately
Possible Cause
• Short circuit.
• Incorrect control loop parameters.
Troubleshooting
• Check the wiring.
• Contact Danfoss.
Danfoss A/S © 2020.08
Diagnostics
AQ262449648484en-000101 / 175R1135 | 157