Functioning
IDN-P-0-0058 is used to configure the motor brake.
The IDN P-0-0059 is used to measure the applied current.
The holding brake is opened with the following sequence:
- The internal speed reference is set to zero and the motor current is activated.
- The holding brake is supplied with voltage.
- The "Drive On Delay time (S-0-0206)" is started:
IDN S-0-0206 determines the time of the motor standstill after the motor current feed, so that the brake can vent first. If the "Drive on delay time" is set too short, the drive may try to work against the still closed brake when it is activated. This can result in increased wear.
- After the waiting time has elapsed, it is assumed that the brake is fully opened and the readiness for operation of the axis is signaled in the Drive Status Word.
Closing the holding brake is done with the following sequence:
- In the Drive-Status-Word the ready signal is deleted.
- The internal speed setpoint is set to zero.
- The voltage supply to the holding brake is disabled.
- The "Drive Off Delay time (S-0-0207)" is started.
IDN-S-0-0207 defines the switch-off delay between activation of the motor brake and deactivation of the current feed. If the "Drive off delay time" is set too short, the axis may sag during deactivation.
- After the waiting time has elapsed, it is assumed that the brake is completely closed and the current supply to the motor is switched off.
IDN-P-0-0097 indicates the state of the motor brake.
IDN-P-0-0096 can be used to release the motor brake manually or requesting activation of the brake manually. This bits overwrite the internal brake request. The brake is therefore released or engaged irrespective of the motor current feed and any travel command.
WARNING | |
Risk of injury! Improper operation of IDN P-0-0096 can therefore lead to sagging of a non-energized Z axis or closing of the motor brake at full speed! |