18．Trouble Shooting - Nakanishi E800Z Operation Manual

Trouble Shooting
18
Trouble Check Points
Power Switch is on, but
power lamp does not
light.
After pushing the Start
button, nothing
happens. Auto Mode-
motor does not rotate
with +24V DC on the
Start line.
,
Can t control speed form
exernal signal.
Motor does not rotate.
,
Can t Rotate in reverse.
,
Can t control speed from
external signal.
,
Can t reset error.
Cause
No voltage in Power Source
Line. Power Source Plug is
disconnected or not
connected firmly.
Blown Fuse.
Thermal Shutdown.
Error lamp is lit. After
resetting system, Error lamp
is not lit with motor Off, but
Error lamp lites again when
motor is switched On.
Error lamp cannot be shut
off.
Motor Speed Selection
Switch is set to INT or 500
No voltage (+24V DC) on
Start line.
No voltage (+24V DC) on
DIR̲IN line.
No voltage on VR line.
EA Error.
EE Error.
Inspect/Corrective Action
Use an approved tester to test voltage at the
power outlet. Consult with a Iicensed.electrician
prior to any electrical work or checks.
Insert Power Source Plug into outlet with firmly.
Check the power cable connection at the
control unit.
Refer to section 8 Change Fuse, check if fuse
(250V-T3.15AL) is blown. Even if only one fuse
is blown, both fuses need to be changed
together.
Check the temperature of the bottom of unit. If
the bottom of the unit is very hot the thermal
protection system has shut off motor power.
Let the unit sit for 20 minutes and restart the
system.
If E1, E8 or EH Error Code is displayed correct
the cause of the error and reset the system.
If E3, E4, E7, EA or EE Error code is displayed,
check the related system and correct the cause
of the error. Reset the system. If E4 is
displayed wait 20 minutes before restarting the
system.
Check the Motor Speed Selection Switch and
set to EXT.
Check +24V DC power supply and connecting
wires.
Check if +0-10V DC between Pin10 and Pin23
on CN2. If no voltage the problem is external to
the NAKANISHI control unit.
EA Error cannot be reset by recycling the Start
Switch. Shut down the Start signal on CN2 and
cycle the Power Switch OFF and ON.
Check shorting pin on CN1 if not using Emergency Stop
System. If using Emergency Stop System, check
continuity of connections to machine
,
s safety systems.
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