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( 8 )
Check That the Composite
Power Supply Unit Outputs
a r e n o t S h o r t - C i r c u i t e d .
Check for short-circuits
between:
.
. +12V and OV
. +24V and OV
Check the Output Voltage
( 9 )
A f t e r I n i t i a l l y A p p l y i n g P o w e r .
Depress the POWER ON ~
pushbutton for first power '
application.
from the cooling air ex-
haust port is normal.
Verify the output voltage
of the composite power
supply unit.
Rated Output
Output Voltage Range
+5 v
v
+12
v
–12
–11.87 to –13.12 V
+24 V
( 1 0 ) C h e c k t h e 1 / 0 S i g n a l s
Between the NC and the
Machine Tool.
Check that 1/0 signals
according to the list of 1/0
signals.
I
4.75
to
5.25 V
11.87 to 13.12 V
20.4 to
27.6 V
J
Check 1/0 signals.
139
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Table of Contents
Troubleshooting
