4-2 Function Mode Parameters Required for Brake Control Function 4 Functions *1. Set a brake release frequency higher than the starting frequency (b082). *2. If the set current is too low, sufficient torque may not be provided when the brake is released. In any of the following cases, the Inverter trips and outputs the brake error signal (BER). (Brake error: E36) •The output current is lower than the release current after the brake release establishment wait time (b121) elapses.
•When the brake confirmation (BOK) signal is used, the brake confirmation signal does not turn on within the brake confirmation wait time (b124) during acceleration, or does not turn off within the brake confirmation wait time (b124) during deceleration; or the brake confirmation signal turns off, although the brake release signal is output. 4-74 Parameter No. Function name Data Default setting Unit b120 Brake control selection 00: Disabled 01: Enabled 00 b121 Brake wait time for release 0.00 to 5.00: Set a time required for the output current to reach the rate of the release current after reaching the release frequency. 0.00 s b122 Brake wait time for acceleration 0.00 to 5.00:
Set a mechanical delay time from when the release signal is output until the brake is released. 0.00 s b123 Brake wait time for stopping 0.00 to 5.00: Set a mechanical delay time from when the release signal is turned off until the brake is closed. 0.00 s b124 Brake wait time for confirmation 0.00 to 5.00: Set a wait time longer than the time from when the release signal is released until the brake outputs the release completion signal to the Inverter. 0.00 s b125 Brake release frequency 0.00 to 99.99/100.0 to 400.0 (Hz): Set a frequency to output the brake release signal. *1 0.00 Hz b126 Brake release current 0 × Rated current to 2.0 × Rated current:
Set an output current that allows the brake to be released. *2 Rated current b127 Brake input frequency 0.00 to 99.99/100.0 to 400.0: Set a frequency to close the brake during stop. *1 0.00 Hz Related functions C001 to C008, C021 to C025