GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 251)

DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
6
123
6.14.8 Brake control
FUNCTIONS
Brake control
[1295] Enable Torque pr
[1262] Closing speed [rpm]
[1293] Torque delay [ms]
[1294] Torque proving [%]
[1266] Actuator delay [ms]
Parameter description No.
Value
Standard
Configuration min max
Factory
American
Factory
European
Enable Torque pr 1295 0 1 Disabled Disabled -
Closing speed [rpm] 1262 0 200 30 30 -
Torque delay [ms] 1293 0 30000 3000 3000 -
Torque proving [%] 1294 0 200 75 75 -
Actuator delay [ms] 1266 0 30000 1000 1000 -
The purpose of this function is to ensure that the machine develops a torque which is capable of supporting the
load of a crane or hoist during the transient brake release phase, in any direction.
Enable Torque pr Enables the brake control function, making it possible to apply the torque capable of
supporting the load during the transient brake release phase.
Closing speed After the stop command, this parameter sets the motor speed at which the “Brake con-
tactor control” digital output is disabled.
Torque delay The time, after the start command, within which the brake released feedback must be
received. If the transient phase is not completed within the time limit set in this parameter,
the “Brake error” alarm condition is signalled. In the closing phase the Torque delay is
set to 1 second.
Torque proving Current capable of supporting the load the drive must guarantee before the brake is
released (as a percentage with respect to FLC). It can be set from a parameter and from
an analog input set as Brake Ref (32).
Actuator delay Delay at the end of the transient release phase, from receiving the signal to confirm that
the brake has been released until the motor actually starts to run.