Local power switching control subsystem
First Claim
1. In a network connecting a plurality of digital modules where each digital module has its own local independent AC power source which is controllably supplied to a plurality of DC power modules also locally situated in each digital module, a local power control switching system in each of said digital modules comprising:
- a local primary source of AC power;
a plurality of local DC power units energized by said AC power source under control of a local power control switching circuit means;
said local power control switching circuit means including;
means to control the connection or disconnection of said primary AC power source to each of said local DC power units;
means to sequence the power-on connection or power-off disconnection to said local DC power units in a predetermined sequence;
means to sense selected operating parameters in each of said digital modules and to generate a status signal for each parameter;
operator switching means for enabling local power control from a local operator or a remote control unit.
2 Assignments
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Accused Products
Abstract
Each digital module in a network is provided with a local power switching control subsystem wherein the local module uses a local power switching control logic card which controls main power and subordinate power units in a predetermined sequence. Power up/down conditions or incremental/decremental voltage conditions can be effected by a local operator or by an instruction from a remote master logic unit. The power subsystem can sense failure conditions and communicate this information to the remote master unit or to a local operator.
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Citations
14 Claims
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1. In a network connecting a plurality of digital modules where each digital module has its own local independent AC power source which is controllably supplied to a plurality of DC power modules also locally situated in each digital module, a local power control switching system in each of said digital modules comprising:
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a local primary source of AC power; a plurality of local DC power units energized by said AC power source under control of a local power control switching circuit means; said local power control switching circuit means including; means to control the connection or disconnection of said primary AC power source to each of said local DC power units; means to sequence the power-on connection or power-off disconnection to said local DC power units in a predetermined sequence; means to sense selected operating parameters in each of said digital modules and to generate a status signal for each parameter; operator switching means for enabling local power control from a local operator or a remote control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A plurality of digital modules connected in a network for power control operations, each of which modules has its own primary source of local AC power for supplying a local plurality of DC power units located therein, a power control system comprising:
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a plurality of local power control switching and sequencing logic units, each of said logic units located within said local digital module and including; means for controlling each of the said primary AC power sources for connecting/disconnecting power to each of said local DC power units; hardware means for sequencing the turn on or turn off of AC power to each of said DC power units in a predetermined sequence; means for receiving power control switching commands from either a local cabinet operator switch means or from a remote control unit means; hardware checking means for sensing voltage temperature and air flow parameters so as to shut down said primary AC power when said voltage, temperature and air flow parameters are beyond a prescribed tolerance; said local cabinet operator switch means providing manual setting for power on/off of said AC and DC power units; said remote control unit means for transmitting power on/off commands to each of said local power control and sequencing means when said means for receiving is set for remote control unit operation. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A local power control system controlling power for a local digital module in which module power may also be controlled from a remote control unit which remote unit is also connected to control the power of other digital modules in a network, the combination comprising;
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a plurality of independent primary sources of AC power, each AC power source situated locally for each digital module and where each AC source is connected to a plurality of local DC power units located in each said local digital modules and each local AC and local DC power units operate under control of a local power control switching unit; said plurality of local DC power units connected to said local power control switching unit for switching on or off said DC units in a predetermined sequence; said local power control switching unit including; selection means to receive power-command information via local operator control or from said remote control unit; means to operate on preset local operator command control upon failure of or disconnection from said remote control unit; means to switch power on/off of said DC units in a predetermined sequence via internal hardwared circuitry upon command from said local control or remote control unit.
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Specification