How do I reset my Danfoss VLT alarm?

How do I reset my Danfoss VLT alarm?

Cycle power to the drive and press the “Reset” key to clear the alarm. Press the “Hand On” key to start the drive locally. Slowly increase the speed by using the up and down arrows on the keypad.

What is VLT Automation Drive?

The VLT AutomationDrive FC 302 from Danfoss is a single drive to control all standard servomotors procedures of any device or production line. This series is specially designed for the automation industry and it offers an excellent solution for users because of its reliability and multifunctionality.

What is VLT in HVAC?

The AHRI Certified™ VLT® HVAC Drive is designed to bring optimized process control to all heating, ventilation and air conditioning (HVAC) applications. Easy to use and with built-in intelligence, the drive is fast and cost-effective to commission.

What does VLT stand for?

Visible Light Transmission (VLT)

VLT % Category Lens Tint
80 – 100% 0 None or Very Light Tint
43 – 80% 1 Light Tint
18 – 43% 2 Medium Tint
8 – 18% 3 Dark Tint

What is HVAC drive?

The most common HVAC definition of a Variable Frequency Drive describes it as an electrical device used as a fan accessory to increase and decrease the rotations per minute (RPM) of an alternating current (AC) motor. The VFD adjusts the electrical power frequency supplied to the motor to vary system airflow.

How does a VLT drive work?

A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply. The VFD also has the capacity to control ramp-up and ramp-down of the motor during start or stop, respectively.

What causes VFD to fail?

Many faults are caused by misapplication of the VFD. Process changes, such as variations in load or speed; power issues, such as capacity switching by the utility; or changes in environmental operating conditions are not immediately obvious, but could be a major contributor to VFD failure.

What VLT do I need?

In sunny weather, goggles with a low VLT offer the most protection and eye comfort; look for lenses with less than 25% VLT. In flat light or on overcast days, you’re going to need a higher VLT; 20-70% VLT will cover the range of conditions you might encounter.

What is VFD controller?

What are the specifications of the Danfoss VLT® automationdrive?

Specifications VLT®AutomationDrive FC 301/302 36 Danfoss A/S © 05/2018 All rights reserved. MG33AT02 8 8 8.1.3 Mains Supply 525–600 V (FC 302 only)

How do you stop a Danfoss VLT motor?

MG.11.AD.22 – VLT®is a registered Danfoss trademark. 6-7 6 6 [Off] stops the connected motor. The key can be Enabled[1] or Disabled[0] via par. 0-41 [Off] Key on LCP. If no external stop function is selected and the [Off] key is inactive, the motor can be stopped by disconnecting the line power supply.

What are the menu keys used for on a Danfoss VLT?

Programming VLT®AutomationDrive FC 360 18 Danfoss A/S © 06/2017 All rights reserved. MG06C702 3 3 B. Display menu keys Menu keys are used for menu access for parameter set-up, toggling through status display modes during normal operation, and viewing fault log data.

What is the instruction manual for a Danfoss HVAC drive?

VLT®HVAC Drive Instruction Manual MG.11.AD.22 – VLT®is a registered Danfoss trademark. 7-23 7 7 14-01 Switching Frequency Option: Function: Select the inverter switching frequency. Changing the switching frequency can help to reduce acoustic noise from the motor.