Blowers automatic control system cabinet type SHSAUV is provided for control of metro main ventilation blowers and other facilities blowers.
Benefits of application
It operates together with actuation (auxiliary) mechanisms, temperature and other sensors of controlled blower. Supports operation modes both with one and several louvers, has motor windings heating connection circuit. SHSAUV can be installed in underground facilities of airshafts and metro tunnels. It is resistant to external influence of climatic factors in U design, placement category 3, according to GOST 15150.
Blowers automatic control system consists of the following functional systems:
Power part of SHSAUV includes input device, input filter, frequency converter with machine dU/dt-filter, actuating and auxiliary mechanisms control circuits.
Frequency converter serves for blower main drive motor power supply, providing startup, braking, reverse of motor and motor current (load) limitation.
Actuating mechanisms control circuits are provided for control of blower auxiliary drives (louvers, impeller blades, straightener device, etc.), protection of servodrives against short circuits and overload.
Operational control, indication and signaling system is provided for intake or outlet switching, blower switching off, blower louvers control, SHSAUV status signaling in local and remote modes.
Frequency converter microprocessor control system provides the following protections:
SHSAUV provides three blowers control modes:
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