
4.POWER SUPPLY CONNECTION B-63943EN/02
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Recommended
The following circuit configuration is recommended.
The power to the CNC and other units (FANUC I/O Unit MODEL A
(I/O Unit-A), FANUC Servo Unit β series with an I/O link (β
amplifier with an I/O link), and so on in the sample configuration
below) is assumed to be turned on or off at the same time. (The
power to any unit is not assumed to be turned on during operation or
before the power to the CNC is turned on.
C input
On/off
circuit
I/O Unit-A
CNC unit
Regulated
power
supply
β
amplifier with
an I/O link
Regulated
power
supply
Device with large noise
or load fluctuations
Fig 4.2.2 (b)
Caution
Turning the power to units on simultaneously when turning the power
to the CNC:
When the following power-on timing condition is satisfied, the power
to units is assumed to be turned on simultaneously when the power to
the CNC is turned on.
Power to the CNC
On
Power to units
(including the Power
Mate)
t1
t2
Off
On
Off
t1:200ms Means that the power to units (including the Power Mate)
is turned on within 200 ms before the power to the CNC is
turned on.