
B–63833EN/03
4. POWER SUPPLY CONNECTION
41
Turn on the power to each unit in the following order or all at the same
time.
1. Power to the overall machine (200 VAC)
2. Servo amplifier control power supply (200 VAC)
3. Power to the slave I/O units connected via the I/O link,
power to the display unit (24VDC),
the CNC control unit,
power to the separate detector (scale),
and power to the separate detector interface unit (24VDC)
“Turning on the power to all the units at the same time” means completing
the power–on operations in 1 and 2 above within 500 ms of performing
power–on in 3.
As for a CNC display unit with PC functions, no specific power turn–on
sequence for the CNC control unit is required.
D If the power only to the control unit of the CNC is turned on without
turning the power to the CNC display unit with PC functions on, the
control unit of the CNC does not start up normally.
D If the power only to the CNC display unit with PC functions is turned
on without turning the power to the control unit of the CNC on
conversely, the units do not start up normally.
Do not disconnect the battery for memory backup (3 VDC) or the battery
for the separate absolute pulse coders (6 VDC) regardless of whether the
power to the control unit is on or off. If batteries are disconnected when
the power to the control unit is turned off, current data stored in the control
unit for the pulse coders, parameters, programs etc, are lost.
Make sure that the power to the control unit is on when replacing batteries.
See Section 4.4.1 for how to replace the batteries for memory backup.
CAUTION
The maintenance rotary switch must be always set to 0 (set
to 0 at shipping from factory).
Changing this setting may cause the contents of memory to
be lost.
4.2.3
Procedure for Turning
On the Power