NB!
OVC must not be enabled in hoisting applications.
3.20.3 B-2# Mechanical Brake
Parameters to configure the operation of an electro-magnetic (mechanical) brake, typically required in hoisting applications.
B-20 Release Brake Current
Range: Function:
par. AP-37
A*
[0.00 - par. AP-37 A] Set the motor current for release of the mechanical brake, when a start condition is present. The upper
limit is specified in par. DR-37 Drive Max. Current.
B-21 Activate Brake Speed [RPM]
Range: Function:
0 RPM* [0 - 30000 RPM] Set the motor speed for activation of the mechanical brake, when a stop condition is present. The upper
speed limit is specified in par. H-73 Warning Speed High.
B-22 Activate Brake Speed [Hz]
Range: Function:
0 Hz* [0.0 - 5000.0 Hz] Set the motor frequency for activation of the mechanical brake, when a stop condition is present.
B-23 Activate Brake Delay
Range: Function:
0.0 s* [0.0 - 5.0 s] Enter the brake delay time of the coast after ramp-down time. The shaft is held at zero speed with full
holding torque. Ensure that the mechanical brake has locked the load before the motor enters coast
mode. See Mechanical Brake Control section in the AF-650 GP Design Guide.
B-24 Stop Delay
Range: Function:
0.0 s* [0.0 - 5.0 s] Set the time interval from the moment when the motor is stopped until the brake closes. This parameter
is a part of the stopping function.
B-25 Brake Release Time
Range: Function:
0.20 s* [0.00 - 5.00 s] This value defines the time it takes for the mechanical brake to open/ close. This parameter must act as
a time-out when brake feedback is activated.
B-26 Torque Ref
Range: Function:
0.00 %* [0 - 0 %] The value defines the torque applied against the closed mechanical brake, before release
B-27 Torque Ramp Time
Range: Function:
0.2 s* [0.0 - 5.0 s] The value defines the duration of the torque ramp in clockwise direction.
AF-650 GP Programming Guide
167
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