
B–62075E/04
2. HARDWARE
87
The cables used for the CNC machine tool are classified as listed in the
following table :
Bind the cables in each group as described in the action column.
Group Signal line Action
A
Primary AC power line
Bind the cables in group A sepa-
rately (Caution 1) from grou
p
Secondary AC power line
and C or cover group A with an
electromagnetic shield (Caution
AC/DC power lines (containing
the power lines for the servo and
spindle motors)
2).
p
AC/DC solenoid
with the solenoid and relay.
AC/DC relay
B
DC solenoid (24VDC)
Connect diodes with DC solenoid
DC relay (24 VDC)
.
Bind the cables in group B sepa-
p
p
DI/DO cable between the CNC
and power magnetics cabinet
B with an electromagnetic shield.
Separate group B as far from
p
p
DI/DO cable between the CNC
and machine
.
It is more desirable to cover group
B with the shield.
C
Cable between the CNC and
servo amplifier
Bind the cables in group C sepa-
rately from group A or cover group
C with an electromagnetic shield
Cable for position and velocity
feedback
.
Separate group C as far from
p
p
Cable between the CNC and
spindle amplifier
.
Be sure to perform shield proces-
Cable for the position coder
Cable for the manual pulse gener-
ator
Cable between the CRT and MDI
RS232C and RS422 interface
cables
Cable for the battery
Other cables to be covered with
the shield
CAUTION
1 The groups must be 10 cm or more apart from one another
when binding the cables in each group.
2 The electromagnetic shield refers to shielding between
groups with grounded steel plates.
D Separating signal lines