3-4
Okuma America Corporation
MACHINE DEFINITION
MACHINE DEFINITION
MACHINE DEFINITION
MACHINE DEFINITION
MACHINE DEFINITION
Rev. 8-21-01
Register - This is a small (one or two bytes in size) temporary device designed to
store data for a very short period of time. Registers are used to hold numbers
during arithmetic operations or to hold memory addresses during data transfer.
They temporarily house data entering and leaving the microprocessor chip.
SERVO SYSTEM
Every CNC has to have some means of controlling axis movement and/or spindle rotation.
A servo system needs a command signal, a servo control amplifier, a motor, and a feedback
device.
The main processing unit acting on instructions from a part program will send the posi-
tioning and speed information to the servo control unit which will convert the informa-
tion it receives into a command signal.
This command signal is sent to the servo control amplifier. The “servo amp” acting on
the command signal sends the proper amount of voltage in the proper sequence to the
axis or spindle motor.
For safety and accuracy purposes, some kind of feedback device is needed to monitor
actual servo movement. The feedback device sends a signal back to the servo control
unit and/or the servo amp. This feedback signal is compared with the command signal.
If they are not the same or very close to being the same the servo control unit will send
out an alarm signal to the main processing unit which will stop machine operation.
I/O Devices
I/O devices connect the CPU with the outside world through interfaces. The interfaces are
electronic circuits that permit controlled data flow from the CPU and its memory compo-
nents to various peripherals.
Tape Reader
This is one of the first I/O devices ever used on an NC control and was carried over to the
CNC. This unit reads a paper tape which has a number of holes arranged in a specified
pattern along its length. Each pattern represents a code or character which can be deci-
phered by the control.
Summary of Contents for OSP 5000
Page 2: ...Intro...
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Page 15: ...OSP 5000 5020 CONTROL SAFETY ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 21: ...OSP 5000 5020 CONTROL DOCUMENTATION ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 33: ...OSP 5000 5020 CONTROL MACHINE DEFINITION ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 48: ...OSP 5000 5020 CONTROL MACHINE OPERATION ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 90: ...OSP 5000 5020 CONTROL CONSTRUCTION ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 133: ...OSP 5000 5020 CONTROL DIAGNOSTICS ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 175: ...OSP 5000 5020 CONTROL PARAMETERS ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 190: ...OSP 5000 5020 CONTROL SOFTWARE ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 218: ...OSP 5000 5020 CONTROL SCHEMATIC SYMBOLS ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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Page 231: ...OSP 5000 5020 CONTROL LATHE SCHEMATICS A40003 ELECTRICAL MAINTENANCE TRAINING MANUAL EL 501...
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