Altivar 16 AC Drive Option card functions, logic output assignment Brake control logic Available on VW3A16201 with or without VW3A16101 , VW3A16102 or VW3A16104 . Function programmed to adjustable values, assigned to the S2A-S2B output. Function Brake control logic is generated by the drive with the material handling card, taking into account the current threshold, the brake release time delay, the brake release threshold and the brake engage threshold. Applications Material handling machines equipped with failsafe brakes, such as hoisting machines. Machines which need a holding brake, such as an unbalanced machine.
Speed t Brake state 0 1 t 1 S2A-S2B 0 t Brake release current threshold (IBr) t Brake release frequency threshold Brake engage frequency threshold t 1 FW (RV) 0 t Programmable and adjustable values: - Current threshold (Ibr) = 0, adjustable between 0 and 1.05 times In by use of option VW3A16101 , VW3A16102 or VW3A16104 - brake release time delay t1 = 0, adjustable between 0 and 5 s on option VW3A16104 - brake release threshold = brake engage threshold = value of LSP. With option VW3A16104 the two levels are individually adjustable. 26 I t1 t1 f