GE Industrial Solutions AF-60 LP Micro Drive - Manual (Page 23)

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 current 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 applied.
NB!
If DC-brake is activated as start function, DC-brake time is defined by start delay time.
2-04 DC-Brake Cut-in Speed
Range: Function:
0.0 Hz
*
[0.0 - 400.0 Hz]
Set DC-brake cut-in speed to activate DC braking current, set in par. 2-01, when ramping down.
When set to 0 the function is off.
AF-60 LP™ Micro Drive Programming Guide
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