Danfoss VLT FC 51 Series User Manual

4.3. Parameter Group 2: Brakes
4.3.1. 2-** Brakes
4.3.2. 2-0* DC-Brake
The purpose of DC-brake function is to brake a rotating motor by applying DC-current to the motor.
2-00 DC Hold Current
Range: Function:
This parameter either holds the motor (holding torque) or pre-
heats the motor.
The parameter is active if
DC Hold has been selected in either
par. 1-72
Start Function or par. 1-80 Function at Stop .
50%
*
[0 - 100%] Enter a value for holding current as a percentage of the rated
motor current set in par. 1-24
Motor Current . 100% DC holding
current corresponds to I
M,N
.
NB!
Avoid 100% current too long as it may overheat the motor.
2-01 DC Brake Current
Range: Function:
50 %
*
[0 - 150%] Set DC-current needed to brake rotating motor.
Activate DC-brake in one of the four following ways:
1. DC-brake command, see par. 5-1* choice [5]
2. DC Cut-in function, see par. 2-04
3. DC-brake selected as start function, see par. 1-72
4. DC-brake in connection with
Flying Start , par. 1-73.
2-02 DC-Braking Time
Range: Function:
DC-braking time defines the period during which
DC-brake cur-
rent
is applied to the motor.
10.0 s
*
[0.0 - 60 s] Set the time DC-braking current, set in par. 2-01, must be ap-
plied.
NB!
If DC-brake is activated as start function, DC-brake time is defined by
start delay
time
.
VLT Micro Drive FC 51 4. Parameter Descriptions
MG.02.C2.02 - VLT
®
is a registered Danfoss trademark 27
4

Danfoss VLT FC 51 Series Specifications

General

Brand	Danfoss
Model	VLT FC 51 Series
Category	DC Drives
Language	English