MDS-C1-SPA Series INSTRUCTION MANUALib1500152(eng)a.pdf - 第144页

4. Spindle Adjustment 4 - 53 [3] The stopping position deviates. Cause Investigation ite m Remedy Remarks 1 Mechanical cause The stopping position is not deviated with the encoder axis. There is backlash or slipping, etc…

4. Spindle Adjustment

4 - 52

(7) Troubleshooting

[1] Orientation does not take place (motor keeps rotating)

Cause Investigation item Remedy Remarks

The orientation detector and

parameter do not match.

SP037 (SFNC5)

Motor PLG.............................. 4

Spindle side detector.............. 1

Magnetic sensor..................... 2

Correctly set SP037 (SFNC5).

1 Parameter setting

values are incorrect

Orientation start is not set to the

general-purpose input. Or, the input in

which the actual orientation command

is wired and the location set in the

parameter are different.

Set “1” in any one of the

general-purpose inputs SP129 to

SP140 which corresponds to the

input section where the orientation

command has been wired.

2 The specification are

not correct

Motor PLG orientation is attempted

with standard motor instead of motor

with Z phase.

Change to a motor having a

PLG-built-in motor with Z phase.

For motor PLG

orientation

3 Incorrect wiring The connector pin numbers are

incorrect,

The inserted connector number is

incorrect.

The cable is disconnected.

Correct the wiring.

Replace the cable.

[2] The motor overtravels and stops. (The m otor sways when stopping.)

Cause Investigation item Remedy Remarks

1 Parameter setting

values are incorrect

The selection of gear does not match

an actual gear.

Match the selection input (GR1,

GR2) of gear with an actual gear.

The gear ratio parameters:

SP025 (GRA1) to SP032 (GRB4) are

incorrect.

Correctly set SP025 (GRA1) to

SP032 (GRB4).

The phenomenon is improved when

the deceleration rate for orientation

parameter SP006 (CSP) is halved.

Readjust SP006 (CSP) This also applies to:

SP107 (CSP2)

SP108 (CSP3)

SP109 (CSP4)

SP121 (MPCSH)

SP122 (MPCSL)

The phenomenon is improved when

the position loop gain parameters

SP001 (PGM) and SP002 (PGE) are

halved.

Readjust SP001 (PGM), SP002

(PGE).

This also applies to:

SP119 (MPGH)

SP120 (MPGL)

The orientation stop direction is set to

one direction (CCW or CW).

Set the SP097 (SPECO) /bit 0, 1

to "0".

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

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).