Danfoss VLT FC 300 User Manual

3.9. Additional Connections
3.9.1. Mechanical Brake Control
In hoisting/lowering applications, it is necessary to be able to control an electro-
mechanical brake:
• Control the brake using any relay output or digital output (terminal 27 or 29).
• Keep the output closed (voltage-free) as long as the adjustable frequency drive is unable
to ‘support’ the motor, such as when the load is too heavy, for example.
• Select
Mechanical brake control [32] in par. 5-4* for applications with an electro-me-
chanical brake.
• The brake is released when the motor current exceeds the preset value found in par.
2-20.
• The brake is engaged when the output frequency is less than the frequency found in par.
2-21 or 2-22, and only if the adjustable frequency drive carries out a stop command.
If the adjustable frequency drive is in alarm mode or in an overvoltage situation, the mechanical
brake immediately cuts in.
3. How to Install
VLT
®
Automation Drive FC 300
Instruction Manual High Power
72 MG.33.U1.22 - VLT
®
is a registered Danfoss trademark.
3

Danfoss VLT FC 300 Specifications

General

Brand	Danfoss
Model	VLT FC 300
Category	DC Drives
Language	English