DFD6361-Maintenance - 第290页
D-5 Handling main pow er supply proble ms (Cont inued) Proble m Cause W hat and how t o c heck Judgment Re medy Maintenanc e personnel lev el Hazard level Measuring instrume nts, tools or replacement parts Protective gea…
D-4
1-2. Main Power Supply Problems
Handling main power supply problems
The causes, check points, judgment and remedies for the main power supply problems are as described below.
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools or
replacement parts
Protective
gear
Facility power
supply is OFF.
Check that the facility
power source supplies
200 VAC, 3-phase
power to the main circuit
breaker.
The power is not
supplied.
Contact your
facility
administrator.
Facility
administrator
Digital testerThe power
does not turn
ON even when
the main switch
is rotated to the
START
position.
The main circuit
breaker is OFF.
Check the main circuit
breaker.
The main circuit
breaker is OFF.
Turn ON the
main circuit
breaker.
When you
cannot do so,
see the
section
1-1, [Main
Circuit
Breaker
Problems].
Maintenance
personnel
The EMO
switch is ON.
Check the EMO switch. The EMO switch
is ON.
Turn OFF the
EMO switch.
Maintenance
personnel
Thefuse(F1and
F2) is blown.
Turn OFF the facility
power supply and then
check whether the fuse is
not blown.
The fuse is burnt. Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester
APFLM15
D-5
Handling main power supply problems (Continued)
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools or
replacement parts
Protective
gear
The power
does not turn
ON even when
the main switch
is rotated to the
START
position.
UPS is faulty or
its cable is
broken.
[Optional
accessory]
Turn OFF the facility
power supply and then
check the cable between
the machine and UPS.
If the power does
not turn ON even
when the cable is
properly
connected, the
cable may be
broken or UPS
may be defective.
Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester
The power
does not turn
ON even when
the main switch
is rotated to the
START
position.
Or the power
does not turn
OFF even
when the main
switch is
rotated to the
OFF position.
The main switch
is faulty.
Check the main switch
operationatAandB
contacts.
Switch status
If the main switch
status is different
from the table
shown in the left,
the main switch
may be defective.
Contact your
nearest
DISCO
office.
DISCO
engineer
Digital tester
The control
circuit is faulty.
Contact your
nearest
DISCO
office.
DISCO
engineer
OFF ON START
A contact
×× ο
Bcontact
×ο ο
Closed: ο Open: ×
D-6
1-3. POWER Lamp (Power-On Lamp) Problems
Handling POWER lamp problems
The causes, check points, judgment and remedies for the POWER lamp problems are as described below.
Problem Cause What and how to check Judgment Remedy
Maintenance
personnel level
Hazard
level
Measuring
instruments, tools or
replacement parts
Protective
gear
The POWER
lamp does not
light.
The POWER
lamp is defective
or its cable is
broken.
Check whether the DC
voltage of +24V is
supplied to the POWER
lamp when the machine
is turned ON.
If supplied, turn OFF the
facility power supply
and then check the cable.
The lamp may be
defective if it fails
to light even when
the power is
supplied.
If the power is not
supplied, the cable
may be broken.
Contact your
nearest
DISCO.
DISCO
engineer
Digital tester