BLASI – FLD circuit board
The BLASI FLD circuit board controls the motor brake function for GP80 drive units in automatic revolving door systems. This dedicated PCB manages DC injection braking sequences, timing precise current application to motor windings upon emergency stop or cycle completion. Integrated with TA-4 logic board signals, it eliminates coasting while preventing over-braking that damages drive components. Featuring adjustable brake timing, fault monitoring, and diagnostic outputs, the FLD board ensures smooth deceleration and immediate standstill confirmation essential for passenger safety and mechanical longevity in continuous commercial operation.
Product Details
The BLASI FLD circuit board provides intelligent brake control for GP80/15:1 48V motor units, executing precise DC injection braking by switching motor phases from drive power to controlled rectification current. Programmable timing sequences optimize deceleration rates for smooth passenger comfort while thermal monitoring prevents brake overheating during frequent emergency cycling.
Direct compatibility with TA-4 control systems and NUM safety modules ensures coordinated emergency response where FLD boards confirm motor standstill before re-energization authorization. Adjustable current limiting accommodates varying door configurations and inertia loads across K21-K42 models while diagnostic LEDs indicate brake activation, fault conditions, and thermal status through Service-IBS interface.
Heavy-duty power semiconductors and arc suppression circuitry enable millions of braking cycles while conformal coating protects against humid entrance environments. Field replacement restores factory braking performance critical for regulatory compliance and injury prevention in hotels, hospitals, office buildings, and retail facilities where precise motor control prevents entrapment hazards during peak occupancy periods.
Article No: 8990022
Additional information
| Brand | BLASI |
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