
B-63003EN-2/01 Chapter 4 Powering Up the Entire System 4 - 5
4
Powering up the Entire System
Precautions
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machine tool control system is ready to be turned on now. Before continuing
here, you have to turn off power to the control.
Review these safety precautions first:
1
.
Confirm that the supplied cables are properly attached to
the appropriate connectors.
2
.
Check that all wiring to the power source is correct. This includes the 24V DC power
connections and the 200V AC power connections.
3
.
Make sure that the motors are properly secured but are not yet connected to the machine
load.
4
.
Check that all components are properly grounded.
Powering Up
There is a specific sequence for turning on the machine tool control system. Follow these steps in
order to bring up the servo drives and get the system running:
1
. Turn on the 200V AC input power to the servo amplifiers.
2. Hit the ON switch on the operator’s panel. This turns on the 24V DC power to the
control, the operator’s panel connection unit, and the I/O modules.
Note
If you did not use a relay to connect the switching device on the operator’s
panel to the I/O power supply (as recommended in Chapter 1), you must turn
on the power to the Model A I/O units just when or before the power for the
control is turned on. For more information on the power on/off timing
requirements, refer to Section 4.2 in the I/O Unit Model A
Connection/Maintenance Manual (publication no. B-61813E).