194
Twisted pair cable
This refers to a cable constructed of two wires, which suppresses the effects of
noise. Because current of the same size is flowing in the reverse direction (the
current in the same size flows in the opposite direction between the two, noise is
blanked out, which reduces the effects of the noise.
Home input
This refers to input of the reference position used for positioning, and is connected
to the Z phase signal of the servo motor driver, or to an external input switch and
sensor.
Near home input
In order to stop the table at the home position, a position called the near home
position is specified, at which deceleration begins. This is connected to an external
input switch or sensor.
Input valid logic
Depending on the type of sensor and switch connected to the home input and near
home input, it is necessary to confirm whether the input signal will be valid when
current is flowing, or whether input will be valid when no current is flowing. This
is called the “input valid logic”. With the FP2 positioning unit, this setting is
entered using a control code in the program.
Deviation counter
This is located inside the servo motor driver, and counts the difference between
command pulses and the feedback from the encoder. Command pulses are counted
as plus values and feedback pulses are counted as negative values, with control
being initiated so that the difference between them is zero.
Deviation counter clear output signal
This is installed in the FP2 positioning unit, and goes on when a home position
return is completed, to notify the driver that the table has arrived at the home
position.
Pulser input operation
This is a device which generates pulses manually, and is used for adjustment when
manual operation is used. The same type of output as that from the encoder can be
obtained, and the FP2 positioning unit is equipped with a dedicated input terminal.
Transfer multiple
With the FP2 positioning unit, this can be specified when the pulser operation
function is used. Outputting the number of pulses doubled by the number of pulser
input signals, the transfer multiple is said to be “2”, and when the number of pulses
is five times that of the pulser input signals, the transfer multiple is said to be “5”.
Example:
Transfer multiple function of the FP positioning unit pulser input
Summary of Contents for NX-POSI1
Page 1: ...Catalog Number s NX70 POSIx NX POSIx NX70 700 Position User Manual ...
Page 6: ...6 ...
Page 14: ...14 ...
Page 22: ...22 ...
Page 38: ...38 ...
Page 64: ...64 ...
Page 79: ...79 Program ...
Page 82: ...82 Program ...
Page 106: ...106 Pulse output diagram ...
Page 107: ...107 Sample Program ...
Page 110: ...110 ...
Page 123: ...123 Action of the I O Flag Before and After a Home Return Operation Return Operation ...
Page 132: ...132 ...
Page 147: ...147 Pulse output diagram Deceleration stop operation In progress stop ...
Page 148: ...148 Forced stop operation Emergency stop Overrun ...
Page 158: ...158 ...
Page 170: ...170 ...
Page 178: ...178 Oriental Motor Co Ltd UPK W Series Open collector output stepping drive connection ...
Page 179: ...179 NX700 PLC External Dimensions 1 System Dimensions mm Motherboard Installation Diagram mm ...
Page 180: ...180 2 CPU I O Analog Unit Dimensions mm 3 Special Unit Dimensions mm ...
Page 183: ...183 Program ...
Page 187: ...187 Program ...
Page 188: ...188 ...
Page 194: ...Publication NX700 UM007A PositionA EN December 2010 ...
Page 195: ......
Page 196: ...Copyright 2010 RS Automation Co Ltd All rights reserved ...