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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