ABB R-2521Z Digital quantity module

For safety reasons enable is possible only when the device is ready for operation! This avoids that the motor starts running in an uncontrolled manner when applying the operating voltage while the enable signal is already applied. That means a permanent wired connection of e.g. +24V after the enable input ensures that the motor will not start running when switching on the operating voltage.

The logic also switches off in case of undervoltage 

in the intermediate circuit and undervoltage of the electronic voltages. The device changes to readiness only when the minimum voltages, necessary for a safe operation, are available. The motor slows down and enable is disabled if an undervoltage of the electronic supply occurs during the operation. If there is an undervoltage in the intermediate circuit the motor slows down and starts running when the minimum voltage is exceeded.

Superior products

Main products include DCS control system spare parts, PLC system spare parts and robot system spare parts,Advantage brands: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, B&R, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft and other imported industrial parts

Application industry

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