MDS-C1-SPA Series INSTRUCTION MANUALib1500152(eng)a.pdf - 第145页
4. Spindle Adjustment 4 - 54 [6] The orientation complete signal is not ou tput Cause Investigation ite m Remedy Remarks 1 Parameter setting values are incorrect Orientation complete is not set to the general-purpose out…
4. Spindle Adjustment
4 - 53
[3] The stopping position deviates.
Cause Investigation item Remedy Remarks
1 Mechanical cause The stopping position is not deviated
with the encoder axis.
There is backlash or slipping, etc.,
between the spindle and encoder.
The gear ratio between the
spindle and encoder is not 1:1 or
1:2.
For spindle side
detector orientation
There is backlash or slipping
between the spindle and motor.
The gear ratio between the
spindle and motor is not 1:1.
For motor PLG
orientation
2 Noise The position detector's cable is
relayed with a terminal block
(connector), etc.
Do not relay the cable.
The position detector cable's shield is
not treated properly.
Properly treat the shield.
The peeled section of signal wire at
the position detector cable's connector
section is large. (A large section is not
covered by the shield.)
Keep the peeled section to 3cm or
less when possible. Keep the
peeled section as far away from
the power cable as possible.
3 The magnetic sensor
installation direction is
incorrect
Check the relation of the magnet and
sensor installation.
Correct the relation of the magnet
and sensor installation.
For magnetic sensor
orientation.
[4] The stopping position does not change even when the position shift parameter is changed.
Cause Investigation item Remedy Remarks
1 Parameter setting
values are incorrect
The position shift was changed to
2048 when the gear ratio between the
spindle and encoder was 1:2 (one
encoder rotation at two spindle
rotations).
If the gear ratio on the left is
established between the spindle
and encoder, the position shift
amount for one spindle rotation is
2048 instead of 4096.
[5] The machine vibrates when stopping.
Cause Investigation item Remedy Remarks
1 Parameter setting
values are incorrect
The gear ratio parameters SP025
(GRA1) to SP032 (GRB4) are
incorrect.
Correctly set SP025 (GRA1) to
SP032 (GRB4).
2 The orientation
adjustment is faulty
The vibration frequency is several Hz. Decrease the position loop gain
parameters SP001 (PGM) and
SP002 (PGE).
Increase the current loop gain for
orientation parameters SP105
(IQGO) and SP106 (IDGO).
The vibration frequency is 10Hz or
more.
Decrease the speed loop gain for
orientation parameters SP098
(VGOP) and SP099 (VGOI).
Decrease the current loop gain for
orientation parameters SP105
(IQGO) and SP106 (IDGO).
4. Spindle Adjustment
4 - 54
[6] The orientation complete signal is not ou tput
Cause Investigation item Remedy Remarks
1
Parameter setting
values are incorrect
Orientation complete is not set to the
general-purpose output. Or, the input
in which the actual orientation
complete is wired and the location set
in the parameter are different.
Set “1” in any one of the
general-purpose outputs SP141 to
SP154 which corresponds to the
output section where the
orientation complete has been
wired.
2 The machine's load is
heavy
The in-position parameter SP004
(OINP) is too small.
Review the in-position range, and
increase SP004 (OINP).
State is improved if delay
compensation control is stopped
during orientation stopping.
(State is improved when changed to
PI control).
Review the values set for the
speed loop gain for orientation
parameters SP098 (VGOP),
SP099 (VGOI) and SP100
(VGOD).
3 Carry out the items for [1] Orientation does not take place (motor keeps rotating).
4. Spindle Adjustment
4 - 55
4-3-4 Adjusting the multi-point indexing orientation control
This control is valid only for the encoder orientation or motor PLG orientation specifications.
(1) Necessary input/output
I/O Signal name I/O mode
Encoder
orientation
Motor PLG
orientation
Orientation start command (ORC) General-purpose input
Indexing forward run command, indexing
reverse run command (WRN, WRI)
General-purpose input
Stop position command data (R1 to R12) Dedicated input
Gear selection command 1, 2 (GR1, GR2) General-purpose input
Input
Torque limit input 1 to 3 (TL1 to TL3) General-purpose input
Orientation completed (ORCA) General-purpose output
Output
Index positioning completed (WRCF) General-purpose output
: Mandatory : Set as required
(2) Operation sequence
Stop
position
command
data
0
Forward
run
signal
t4
ON
OFF
ON
OFF
t1
t2
t2
t2
When the indexing angle is within
the in-position range
t3
t5
Motor
speed
Orientation
start
Forward run
indexing
Reverse run
indexing
Orientation
completed
Index
positioning
completed
OFF
OFF
OFF
ON
ON
ON
ON ON
ON
ON
OFF
ON
ON ONON
OFF
OFFOFF
OFF
OFFOFF
OFF
OFF
OFF
t1 to t4: 20ms ore more t5: 200ms (Standard value)