YASKAWA YASNAC i80 - Page 149

(8)
(9)
Check That the Composite
Power Supply Unit Outputs
are not Short-Circuited.
Check for short-circuits
between:
.
+5V and OV
. +12V and OV
.
+24V and OV
● -12V and OV
Check the Output Voltage
After Initially Applying Power.
@
I
Depress the POWER ON ~
.: ..:
pushbutton for first power ‘
application.
c Check that the air flow
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
4.75 to 5.25 V
+12
v
11.87 to 13.12 V
–12
v
–11.87 to –13.12 V
+24 V
20.4 to 27.6 V
J
(10) Check the 1/0 Signals
Between the NC and the
Machine Tool.
-.
Check that 1/0 signals
according to the list of 1/0
signals.
Check 1/0 signals.
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