The YASNACLX3providesyou with an internal
self-diagnosisfunction(DGN). System maintenance can easilybe accomplishedwith DGNand
other main functionsas listedbelow;
(1) Microprocessoralways monitorsthe machine
operationsinternallyand can displaythe
statuswith functionkeys.IF any failure
occurs,NCimmediately stops with the blinking
of alarm displays.Also the same precedure
1.1 COMPONENTARRANGEMENT
MACNINE
CONTROL
STATION
1/()
9’sCRT PANEL
D’
(OpTIONAL)
v
d
2
EEJ
Ia.lz
w=
H
~g
Ucn
I
CONTROL UNITS
GENERAL PURPOSE
1/0 MODULE
be executed on machine sequence for the
can
icationof buit-intype programmable con-
apo
ler,
tro
ON/OFFSIGNALof Input to NC/Output from
(2)
NCcan be displayedwith DGN
(3) Settingvalue of various
as accel/deceltime constant
parameterssuch
and rapid speed.
ACCC
(OPTIONAL)
)
.
AC SERVO
DRIVE UNIT
f---
7
---
[
AC SERVO
DRIVE UNIT
—
1
X-Axis
kbtor
I
+CONTROL CABINETI
Fig.1.1Component Arrangement of YASNAC-LX3
–l–
1~1 COMPONENTARRANGEMENT(Cont’ d)
YASNA(’ 1.X:1
—.
POWER SUPPLY UNIT
~-cPs.,”t4--1
u
-.
NAIN BOARD
~-;ANCt3-kmzo -
CNA
(AVN)
0
,
CNI{
PC)
(
.
f-
CNC
(MM)
u
CNI)
(MM)
(1
1
CNI;
( OP”I”ION” )
CNl(Sl))
(’Nil
(’N12
(’N13
-J
CNl
1+
CN z
CN 4
CN5
(’N 6
1
cNII
( 1/[))
/.., *
G,. ,
!
i
L
c’N 8
-~,
<
+
5X
,1
ST
&
1
S1’(i
‘Ill
NS-2.i2C
111)1.c
r+I
!--L
!1
@
‘cl
@l
cl
C2
~
~
C6
\c7Jj
@j
m TO
SP20. CN3
200 VAC INPUT
X-AXIS DRIVE
Fr;w$x-mlsMOTOR
~;%%y’-Z-A’ISMOTOR
k’--,-’
SPINDLE DRIVE
poWER INPUTSEQu_OpTIcMENCODER
~.—
L-._~
1
lto~
AC(; C
RESISTOR
FOR SPINDLE
“1
TAPE READER
TYP; :III’1{~
1
L_ti
]
L-_.-J
DIRECT-IN
4 POINTS
I/0 _BOARD
JANCD - 1020-
[
—-
cN51
CN52
cN53
CN54
0111”
m
OUTPUT : 40 POINTS
INPUT :
OUTPUT :8 POINTS
INPUT :24 POINTS
OUTPUT :
CRT PANEL
32 Fonm
8 POINTS
16 POINTS
40 POINTS
Note :
Show cableNo.
Fig.1.2ConnectionDiagram
OPTICAL ENCODER
Circled“C” values.
–2–
1.2 CONSTRUCTION
(1)
(’2)
Appr(
Weigl
-176
SUPPLY
L
BOARD
BOARD
I
BOARD
MB20 MAIN BOARD
UNIT
Fig.1.3CPUModule
Fig.1.49“CRT Unit (rearview)
Fig.1.5Tape Reader Unit
–3–
1, z CONSTRUL’TION(Cont’ d)
(3)
RELAY UNIT
:.-
J
/
CONTACTOR UNIT
SPINDLE
DRIVE UNIT
Fig.1.6Example of Un
AC SERVO PACK
J..>/
TRANSFORMER
COOLING UNIT
t Assembly with High Voltage Units
—CPU
M,~I)lJLE
586-173
MAJORCOMPONENTS
1.3
YASNACMAJORCOMPONENTS
(1)
ComponentName
PowerSupply Unit
TapeReader
Tape Reel
tfain Board
PCBoard
tlemoryBoard
MemoryUoardfor Extension
Control Station
CRTDisplay Unit
KeyLtoardUnit
SP Board
General Purpose 1/0 Board
General Purpose 1/0 Module
Tahte1.1 YASNACHajor Components
Type
CPS-1ONII
MODEL2801
t10DflL1500
t10tIEL1402-1
Code
AVRKN
RED18
RLD14
RED13
I
Remarks
Option
OptIon
Option
JANCI)-MB20CDTN5270
JANCI)-PC20
JANCD-MM20
DTN4770
OTN4790
JANCI)-MM21-2DTN5170 Memorylength:[?0m,160m
JANCD-MM21-3DTN5180 Memorylength:320 m
JANCI.-NN21-4
DTN5190 Memorylength:640 m (option)
JANCD-MM21-5DTN5200 Memoryleneth:1280m
The followingtable shows the minimumrequirements to be observed for maintenance time in
Table 2.1InspectionSchedule
I terns
Cleaning of reading
head
TapeCleaning of tape
Readertumble box
Lubricatingof tension
arm shaft end
Tight closingof doorsDaily
Control
Panel
AC
Servo-
motor
Checking for loose fit
and gaps of side plates
and worn door gaskets
Vibrationand noise
Motor contamination
and breakage
Battery
Frequency
As requiredo
As requiredo
As requiredo
MonthlY
Daily
Daily or
as required
Daily
order to keep the equipment in optimum condi-
tion for an extended period.
With
the
system- systemOffon
o
o
o0
o0
With
the
o
Remarks
Includinglightsource
part.
Feel by hand, and do
the audibleinspection.
Inspectvisually.
See if alarm for BATTERY
is displayedon CRTscreen.
Except for those checks which can be made with
the NCin the energizedstate,such as checks
for externalcleanliness,vibration,and noise,tor’sstationis not sufficient,because after
be sure to turn off the power supply to the NC
before startingto undertakeroutinemainte-
nance service.
For this,turningoff the power supply by
pushing the POWEROFF button on the NCopera-
thisbuttonis pushed, stillseveralareasin
the housing are energized,and are potentially
dangerous.
–7–
2.1. ‘TAPEREADER
(1) [Cleaning the tape reader head (Dai
(a) Removetape rubbish and dust from the
glasswith a blower brush.If the glassis
stainedwith oilor oily dust,wipe it using
agauze or softclothwith absolutealcohol.
Also cleanthe tape guide and the tape
retainer.
(b) Remove the dust,if any, on LED (light
source)on top with a blower brush.
(2) Cleaning of tape tumble box (Weekly)
Clean the braidednylon leadingtape with a
clean,softcloth.
(3) Lubricatingof tensionarm shaft
Fo:r the controlwith 6-inch or 8-inch diameter
reels,lubricatethe shaft end of tension arm,
when the tension arm does not move smoothly.
lY)
Q
LUBRICATING
o
\
/
\
(In the case of 8-inch diameter reel)
Whentroubleoccurs in feeding or
winding tape with 8-inch diameter
reels,open thefrontdoor and brush
away dust around the photo-couplerby
using a blower brush.
CONTROLPANEL
2.2
TENSION ARM
Fig. 2.1
NOTE
Keep each door tightlyclosed at alltimes.
~Tension arm shaftavailableas an option.
(b) After inspectingthe controlwith dcor
open, closethe door and fastendoor locks (2
per door) securelyusing the key provided(No.
YEOOI). Whenopening or closing,insertthe
key allthe way intothe keyhole and turn
untilit clicks(approximatelya quarter-turn).
The key can be removed
position.
CLOSED
POSITION—
CLOSEDL
OPEN POSITION
If the optionaldoor interlocking
switch is provided,opening the door
shuts off the main power supply and
stopsalloperations.
(c} Check gasketson the rims of frontand
rear doors.
(d) See if the insideof enclosureis dusty.
Clean it,if necessary.
(e) Check for any opening in the door base
with the doors shut tightly.
a
Q
t
with the door
lock on right
side of the
door (Left-hand
Hinged Door)
from an open or closed
OPEN POSITION
\
r,
d=
6
With the door
lock on left
side of the
door (Right-hand
Hinged Door)
Fig. 2.2
NOTE
CLOSED
—CLOSED
POSITION
Checks on doors for tightclosing(Daily)
(1)
(a)
The controlpanel is constructedas a dustproof,sheet-steelenclosurewith gasketed
doors so as to keep off dust and oilmists.
2.3 ACSERVO!lOTOR
(1) Vibrationand noise(Daily
Vibrationcan be checked by restingthe hand
–8–
or as required)
on the motors, and for noise,using a listen-
ing stickis recommended.
If any abnormality
is found, contactmaintenance personnelimme-
diately.
(2) Motor contaminationand impairment (Dai
or as required)
Check the motor exteriorvisually.If dirt
damage should be observed,inspectthe motor
by removing the machine cover.Refer to the
machine tool builder’smanual.
2.4 BATTERY
Make sure that‘BAT”or ‘A/B” on the right-
low positionof CRTscreenis not displayed.
If it is displayed,the batterymust be
replacedwithin a month.
(6) With the power on, remove the old battery.
(7) Put the new bat teryin the holder and set
the connector.
See Fig. 2.4.Batteryconnec-
tion.
Y
(8) With the power on, make sure that b] ink
displayof CRTscreenor LED1goes off.IF
or
they are stillilluminated,it is due to the
improper batteryconnectionor defective
battery.
—
\
*\
,+
A-1
Whenreplacing,never remove the old battery
with power off,otherwisethe data storedin
memoryare cleared.
Replacing Procedure
(1) Depress POWEROFFpushbuttonto shut off
the power supply to the operator’sstation.
(2) Open the frentdoor of the control.The
batteryof the memory (printedcircuit)board
can be seen on the CPUmodule which is mounted
on rear of the frontdoor.
(3) Where the controlis equipped with a door
interlockswitch,pullit out by hand.The
power can be turned on, with the door open.
(4) Depress POWERONpushbutton.
(5) Check to see if lLED on memoryboard is
illuminated.Fig. 2.3 shows the arrangement
of LEDand the battery.
If illuminated,
replacethe batterywith new one.
A\
L
I
Fig. 2.3 Arrangement of LEDand Battery
CORRECT
Fig. 2.4 BatteryConnection
CORRECT
WRONG
BatteryType:JZNC-GBAO1
–9-
(1) Measuring instruments
3. MAINTENANCEINSTRUMENTS
Name
10 to 30 VAC(at 40 to 100 Hz)
Tolerance:
Tester
or
Multi-purpose
digitalmeter
(2) Tools
Phillipsscrewdrivers;large,medium and small
Standard screwdrivers;medium and small
Several mVto 100 VDC
Tolerance:
SeveralQ to approx.
Tolerance:
Allowable measuring range
~~~ or less
~~~ or less
*5% or less
Purpose
To measure ACpower voltages
To measure DCpower voltages
multipleof 10MQ
(3) Chemicals
Cleaning agent for tape reader(absolute
alcohol)
To measure currentsflowing
through DCmotors
–lo-
4. TROUBLESHOOTING
4.1 TROUBLE
Try to fully
which the troubleoccurred.This is necessary
for identifyingthe troubleand/orfor having
the YASNACservicepersonnelcalledin to
correctthe trouble.
pointswillminimize
system:
4.1.1RECOGNITIONOF
(1) What operationw
(Is otheropera t ion performed normal lY?)
(2) Whendoes the troubleoccur:every time
or frequently?
(3) Was there no externaldisturbancesuch as
power interruptionor lightningwhen trouble
occurred?
(4) Did it occur during or afteroperationof
mode switchessuch as EDITor memory, or func-
tion such asm(parameter)or~(diagnose)
or key switch on CRTpanel?
(5) Ensure the fol lowing pointsif the trouble
occurredas relatedto feed and/orspindle
operation:
. Check of LEDon the drive unit
. ON/OFFcheck of fuse or MCCB
“ Time of troubleoccurrencesuch as
power application.
at
at
acceleration.
at
deceleration.
at
steady-staterunning.
(6) Does it depend on partprogram?
If so, record also part program, offsetand
coordinatesystem settings.
DENTIFICATION
analyzethe circumstancesin
Verifyingthe following
the down time of your
TROUBLESTATUS
11 cause the trouble?
recognizethe statusof
regardlessof the detai
The NCunitis provided
switch.When the operatoropens the door,the
NCunitpower supplyis trippedby MCCBand
Note:
Refer to the maintenancemanual preparedby machine manufacturerfor details.
Sequencer messages are the troublesconcernedwith machine sequence.
–12-
4.2.1ALARMS010 ANDO1l (ParityError)
Cause of Trouble
Alarm 010
(THerror)
Check Method
1) In case of tape operation:
The number of data holes for each
characteris checked on the NC tape.
An alarm is issued when the number is:
Even: For EIA tape
Odd:For 1S0 tape
(The descriptionthatfollows applies
to the EIA code.)
!Wr,ca
LSK-RRR
Ec01cNIGox123.456chlJOCl;
II+
128
ton :
k
E(JR :
Solution
● Clean tape reader.
Check tape itselfif the
feed hole is faultyand/or
the nap is raisedon the
iluie.
. Failureof tape reader
itself
Tn
HII
Alarm 011
(TVerror)
Others
Alarm 010
2) In case of memoryoperationor at
time of EDIT.
3) RS232C communication error
● Framing error
. Overrun
In case of tape operation:
The tape should be capable of TVcheck
(Number of charactersfor one block
should be even, includingllOB.)
1) Disagreement between numbers of
RS232Cbaud ratesand stop bits
2) Communicantion errorof RS232C
(ea.too Rioh noiselevel)
.
Failureof MB20board or
of expansion memory board
(MI121board)
Refer to item 4.3.14.
If the tape cannot perform
TVcheck, use it by setting
mft6002 D6 = O (TVcheck
OFF) or make it so that it
can perform TVcheck.
● Check the specificationof
RS232Cequipment
● Check parameters.
Refer to par.4.3.14.
“ Check cable grounding.
–13-
4.2,2ALARM075, 076, 077 (RS232CFaulty)
075: RS232C interface;disagreementbetween
number of bitsand number of baud rates
RS232C
076:RS232C interface;transmissionfi~ilure
077:RS232C interface;10 charactersor more
were read afterstop code was issued.
~llkey.~
—
Setting
data written
~No“ __!ti
correctl9
NO
\-“-
Fig. 4.3
#6028 (OUT)
#6026 (IN)
Baud ratesetting.
Stop bit setting.
Control code setting.
Check wiring.
–14-
o Settin~of AmlicableInterface
Set the datatransmissionbaud rate,stop bit
length and controlcode sending commandspecificationswith parametersas shown in Tables
4.3 and 4.4.
(a) Select ion of RS232C InterfacePort
Selectthe port of RS232C interfaceby setting
#6003.
1st RS232Cand 2nd RS232Ccannot be selected
simultaneously.
Table 4.2Selectionof RS232CInterfacePort
Interface
1st RS232C
2nd Rs232C
Selectabove bitsby parametersetting‘1” .
Input
#6003D0#6003D4
#6003f)l
Output
#6003D5
Settingof stop bitlength
Settingof controlcode sending command
I
Common
Independentt
(c) 2nd RS232C Interface
Baud ratevalue settingfor 2nd RS232C inter-
face is shown in Table 4.4.
input’#6026D5
output
Output#6028D5
I
=1:Does not
send control
code.
=0:Sends control
code.
(b) Ist RS232C Interface
Baud ratevalue settingfor 1st Rs232C inter-
face is shown in Table 4.3.
Table 4.3Baud Rate Value Setting
Common
indepen-
dentt
Baud
rate
value
Input/
output
‘nput
‘u ‘Put
Jo
110
150
200
300
600
#6026 li6026 it602E it6026
D3D2D1DO
#6026 #6026 #6026 #6026
D3D2D1DO
#602/?’#6028 #6028 #6028
D3D2D1DO
50
0000
o0
0010
0011
0100
0101
0110
01
Table 4.4Baud Rate value Setting
Common
indepen-
dentt
Baud
rate
value
Input/
Output
Input
output
100
110
150
200
300
600
1200
2400
4800
9600
t1602~#602~ #602~ #6027
—
50
#&i&
iEHEk
–lrj_
4.2.2ALARM075, 076, 077 (RS232CFaulty)(Cont’ d)
Settingof stop bitlength
—
Common
lndepend-Input!16027D4 =0:One bitsfor
entOut;ut
Settingof controlcode sending command
Function
‘SignalStatus
—
_Logic
input’#6027D4
output
#6029D4stop bit
Table 4.5RS232CVoltage Level
VO<-3VVO>+3V
I
OFFON
MarkOpen
I
=1:Twobitsfor
1-[
stop bit
1“
Table 4.6Connection Cable (A:
RS232C Interface
NCSide (DB-25P)
Symbol
FGFrame grounding
SD
RDReceive data
RSRequest send
CsCapable of send
DRData set ready
SGSignalgrounding
ER
I
Send data
Equipment ready
Signal
\
Connection
External
o
*
—..—.
+
for Termina
ConnectionEquipment
]Pin No.Symbol
1~
I
2
3
4
5
6
7
20
—,—
0
FG
SD
RD
RS
SG
10 BUSY
ER
16
Fig. 4.4Example of 1st RS232C Interface
1. Use 1st RS232Cinterfacewhen the built-in
type tape reader(PTR) is used.
In this case,RS232Cinterfacefreelyusable
by customersis 2nd RS232C interfaceonly.
display)
“ JANCD-MB20module,
-MM20module or -MM21
module (optional)is not correctlyconnected.
● Failureof above modules
Contact YASREPin any of above cases,
2. Keep cablelength from tape readerto main
board (JANCD-MB20Type) lessthan 3m. Contact
YASREPin advance if itis necessaryto exceed
3m.
PG cable failure
Occurs at high speed
by errorof reference
point pulse
The alarm occurs also
In case of G28Same as above
at automaticreference
pointreturn.
4.2,7ALARMS271 AND272 (P-SET Error)
In case of G27Check the program.
(Z-axis)at the time of completingpositioning
with GOO,G27, G28, G29 and G30.
[)-Set Error resultswhen differencebetweenCheck is also requiredat the time of ERROR
commandpositionand machine positiondoes notDETECTON (~#1304D5=1) and G4 (dowell).
fallwithinparameters#6056 (X-axis)or X6057
Cause of TroubleCheck Method
Miichine runs too heavy. Measure the load current.Observe
torque motor in case of ACservo.
Servo errorpulse
exceeds settingrange.
Check errorpulse.
Refer to par.3.3.4.8
Display Number of Servo Lag Pulsesin
Operator’sManual.
-20–
Solution
Lighten machine load,
Adjust zero pointof servo.
If it cannot be adjusted,
replaceMB20or Servo Pack.
Contact YASREP.
4.2.8 ALARM310 (Servo PowerSUPPlYNot APP1ied)
Cause of Trouble
Secondary power supply
is not applied.
In caseofautomatic
servo power applic-
ation 1/0 input specificationis not activated by secondary
power supply.
Emergencystop input.
Secondary powersupply
was tripped by other
alarm.
Check Method
This is a normal resultwhendepressing
NCRESETafterinitial~rapplication
or resettingemergency stop alarm, etc.
Ensure that it is set to
~#1322D7=l.
Chwk if ALht330displays,or~l!ll?lll
Dl=l.
Check for other alarm display.
Solution
Depress IWERONbutton
again.
Check wiring and sequence.
Reset emergency stop input.
Take correctiveaction
according to alarm code.
4.2.9 ALARM320 (Control Not Ready)
This ty~ofalarm resultswhenpositionlag
Cause of Trouble
Faulty zero point
adjustment of servo.
Machine is running.
PCsignal keeps feeding.
MIMIfailure.
Wctm!%219=4,then, ERRORPULSE
iisplay screen from~displayand
wad the values of X- and Z-axes.
Check Method
does not fall within therangeofmM056
and it6057 after powr applicationand selfdiagnosis,
Solution
Perform zero Wint adjust-
ment of servo.
This isaproblmofthe
machine side rather than
failureof NCunit.
Contact machine manufac-
turer.
Replace FCor servo.
Contact YASREP.
Replace MB20. Contact
YASREP.
–21-
4.2.10 ALARM330 (EmergencyStOP)
——
Cause of Trouble
CheckMethod
Solution
Emergencyshp button
depressed, or, machine
end L-Sis out of place
FailureofMIMI
!fter ensurinm#1281D1=O(during
anergency stop), check continuityof
mergency stop button or nnchine end LS
shown below.For correctconnection,
referto connectiondiagram prepared
by math ne manufacturer.
MB20
1
ESP
MachineEnd LS
“m
L--%--J
MachineEnd Release
Exampleof EmergencyStop Connection
This is MB2Qfailureif alarm 330 lights
even amgli%l=l.
Reset the emergency stop
button.Release itfrcrn
machine end LS according
to instructionmanual
prepared by machine manu-
facturer.
I
Replace HB20.
Contact YASREP.
Drop of +24V power
Check +24 VDCpower. If thevolt.ageis
below +20V,it indicatespmsible
trouble.
4.2.11 ALARMS331 AND332 (.ServoFuseBlown)
Cause of Trouble
Servopack fuse is
bl.wn or~Btripped.
I
m#1288Dl=l X-axis alarm
#1289 D1-1 Z-axis alarm
Check Methcxl
Alarm3!%)(servoPack alarm) should also
be displayed simultaneously.
IXN#1’281D2=l