
B–63783EN/01
5. POWER SUPPLY UNIT CONNECTION
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(c) Alarm outputs (FA, FB)
FA and FB are short–circuited when the DC output fuse used for
the power source unit of the control unit blows, or when
overvoltage, overcurrent or other abnormality occurs in the DC
output of the power source unit. FA and FB are also short–circuited
in the same way by the alarm inputs (AL, OFF) closing. This
signals are held until the OFF button is pressed, or the input power
source (AC input of power source unit) is cut. When these signals
are output, the power source of the control unit is cut, and the
function of the power ON button is disabled.
(Contact Rating)
50VDC max.
0.5A max.
50VAC max.
5VA max.
(4) CP5
This is the +24VDC output.
CP5 is used as the power sources for the LCD unit and hard disk unit.
(5) CP6
This is the power source (+24VDC) for the machine interface I/O (e.g.
connection unit, operator’s panel connection unit).
2A is the maximum DC output that is supplied from CP6.
Power on units in the following sequence or simultaneously:
1. (200VAC) of overall machine tool, separate detector (scale)
2. Slave I/O unit connected by I/O Link, separate detector I/F
unit and LCD unit (24VDC), servo amplifier control
3. CNC control unit (200VAC)
“Simultaneously” here means that 1 and 2 above must be turned on within
500 ms at the most of turning 3 on.
When the separate detector (scale) is used, the output signal of the
separate detector must be allowed to stabilize within 500 ms at the most
of turning the separate detector I/F unit on.
Be sure to turn the separate detector (scale) on before the separate detector
I/F unit sometimes according to the specifications of the separate detector
(scale).
The battery for separate absolute pulse coder must remain connected
regardless of whether the control unit is on or off. If the battery is removed
with the control unit on, the position data of the pulse coder is lost.
The CNC display unit with PC functions is not subject to any power on
sequence limitations.
Either the CNC display unit with PC functions or the CNC control unit
starts fast, whichever is powered on later.
5.2.2
Power ON/OFF
Sequence