
7. SERVO INTERFACE
B–63523EN/03
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This chapter describes how to connect the servo units to the i series CNC.
For details of the connection of the Servo amplifier αi series, refer to the
Servo Amplifier αi series descriptions (B–65282EN).
COP10A
COP10B
COP10A
COP10B
COP10A
COP10B
COP10A
COP10B
COP10A
Control unit
Servo amplifier modules
Optical fiber cable
16i/160i/160is: Maximum 8 axes
18i/180i/180is: Maximum 6 axes
21i/210i/210is: Maximum 4 axes
Cable Length Restriction
Within 100 m between units
Total length within 500 m
The connection between the CNC control unit and the servo amplifiers
should use only one optical fiber cable, regardless of the number of
controlled axes. See APPENDIX D for details on the optical fiber cable.
In the control unit, the COP10A connector is placed on the servo card
installed on the main board. When a sub–CPU card is used, COP10A is
placed on the servo card installed on the sub–CPU board as well.
The high–speed HRV function works not only for the set axes but also for
all axes connected to the same FSSB line. It is necessary to consider
connections with the FSSB line depending on the axes to be used. Some
servo amplifiers do not support the high–speed HRV function. Any of
such servo amplifiers cannot be connected to the FSSB line.
Because it is necessary to use combinations of the first and second axes,
the third and fourth axes, the fifth and six axes, and seventh and eighth
axes as paired axes, the axes in each combination must be connected to
the same FSSB line. To put another way, the first axis cannot be
connected to FSSB–1 if the second axis is connected to FSSB–2.
7.1.1
General
7.1.2
Interface to the Servo
Amplifiers
7.1.2.1
Interface to the servo
amplifiers
7.1.2.2
Interfacing with servo
amplifiers
(for high–speed HRV
function)