8 programming, Af-650 gp brake resistor design guide, 1 af-650 gp parameters – GE Industrial Solutions AF-650 GP General Purpose Drive User Manual
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8 Programming
8.1.1 AF-650 GP Parameters
The following is a list of parameters for the DriveSeries which are important or relevant for braking with a Brake Resistor.
Parameter
Suggestion of settings
Par. B-00 DC Hold Current
This parameter holds the motor function (holding torque) or pre-heats the motor.
Par. B-01 DC Brake Current
Depends on the desired braking torque
Par. B-02 DC Braking Time
Set the desired DC braking time
Par. B-03 DC Brake Cut In Speed [RPM]
Set the desired DC Brake Cut In Speed
Par. B-04 DC Brake Cut In Speed [Hz]
Set the desired DC brake cut-in frequency
Table 8.1: DC Braking
Parameter
Suggestion of settings
Par. B-10 Brake Function
Resistor brake
Par. B-16 AC brake Max. Current
Enter the maximum permissible current when using AC brake to avoid overheating of motor windings. The AC
brake function is available in Flux mode only (AF-650 GP only).
Table 8.2: AC Braking
Parameter
Suggestion of settings
Par. B-10 Brake Function
Resistor brake
Par. B-11 Brake Resistor (ohm)
Depends on the unit, see the tables in chapter Brake Resistor Overview.
Par. B-12 Brake Power Limit (kW)
Depends on the unit, see the tables in chapter Brake Resistor Overview.
Par. B-13 Braking Thermal Overload
Warning or trip
Par. B-15 Brake Check
Warning or trip
Par. B-17 Over-voltage Control
Over-voltage control (OVC) reduces the risk of the drive tripping due to an over voltage on the DC link caused by
generative power from the load. - Must not be enabled in hoisting applications.
Par. F-41 Torque Limiter (Braking)
160%
Par. E-51 Terminal 27 Mode
Brake no warning
Brake ready no fault or
Brake fault
Par. E-52 Terminal 29 Mode
Same as par. E-51 Terminal 27 Mode
Par. E-24 Output relay
[21]
Thermal warning
The thermal warning turns on when the temperature exceeds the limit in
the motor, the frequency converter, the brake resistor, or the thermistor.
[28]
Brake, no brake warning
Brake is active and there are no warnings.
[29]
Brake ready, no fault
Brake is ready for operation and there are no faults.
[30]
Brake fault (IGBT)
Output is Logic ‘1’ when the brake IGBT is short-circuited. Use this function
to protect the frequency converter if there is a fault on the brake modules.
Use the output/relay to cut out the main voltage from the frequency con-
verter.
Table 8.3: Dynamic Braking
AF-650 GP Brake Resistor Design Guide
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