bnp-b2365(eng)b.pdf - 第330页

6. Troubleshooting 6 - 25 Alarm No. 46 Motor overheat The temperature protection function in the motor or detector activated. Investigation det ails In vestigation results Remedies SV SP The alarm occurs before operation…

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6. Troubleshooting
6 - 24
Alarm No.
43
Feedback error 2
With the servo, an excessive error was detected in the position data for the motor side detector and
machine side detector. With the spindle, an error was detected in the encoder feedback signal.
Investigation details Investigation results Remedies SV SP
The connector is disconnected (or
loose).
Correctly install. 1 Check whether the drive unit
connectors or detector connectors
are disconnected.
The connector is not disconnected. Investigate item 2.
{
The cables are wired near each
other. (Noise is entering from the
power cable.)
Improve the cable wiring. 2 Is the detector cable wired in the
same conduit as the motor's power
cable or are the two cables laid in
parallel near each other?
The wires are sufficiently separated. Investigate item 3.
{
The motor FG wire is grounded on
the motor side.
Connect together on the drive unit
side.
3 Is the motor FG wire connected only
to the drive unit which drives it?
(Is the motor grounded to one point?)
The motor is grounded to one point. Investigate item 4.
{
There is a connection fault. Replace the detector cable. 4 Turn the power OFF, and check the
detector cable connection with a
tester. (Is the cable shielded?)
The connection is normal. Investigate item 5.
{
The alarm is on the drive unit side. Replace the drive unit. 5 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or detector side.
The alarm is on the detector side. Investigate item 6.
{
No abnormality is found in particular. Replace the detector.
(With the absolute position system,
the zero point must be established.)
6 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
An abnormality was found in the
ambient environment.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
{
Alarm No.
44
C-axis changeover alarm
When using the coil changeover control motor, the mode was changed to C-axis control while the
high-speed coil was selected.
Investigation details Investigation results Remedies SV SP
High-speed coil is selected (bitD = 0) Correct the sequence. 1 Check the coil selected with the
spindle control input 3, bitD for the
C-axis control command.
Low-speed coil is selected (bitD= 1) Investigate item 2.
{
Coil changeover valid (SP034/bit2 =
1)
Correctly set the parameter. 2 Is coil changeover validated for the
special motor specifications?
Coil changeover invalid (SP034/bit2
= 0)
Replace the drive unit.
{
6. Troubleshooting
6 - 25
Alarm No.
46
Motor overheat
The temperature protection function in the motor or detector activated.
Investigation details Investigation results Remedies SV SP
The alarm occurs before operation. Investigate item 2. 1 Check the repeatability.
The alarm occurs occasionally after
operation is started.
Investigate item 5.
{ {
The connector is disconnected (or
loose).
Correctly install. 2 Check whether the drive unit
connectors (servo: CN3, spindle:
CN6) or detector connectors are
disconnected.
The connector is not disconnected. Investigate item 3.
{ {
The cable is broken. Replace the cable. 3 Using a tester, check whether the
detector cable is broken.
The cable is not broken. Servo : Investigate item 4.
Spindle : Investigate item 12.
{ {
SV034/bit2 = 0 Set SP034/bit2 to 1. 4 When using MDS-B-HR, is the motor
thermal validated even when it is not
provided?
SV034/bit2 = 1 Investigate item 12.
{
The load is large. Servo : Investigate item 6.
Spindle : Investigate item 8.
5 Check the overload % (servo) or load
meter (spindle).
The load is not large. Investigate item 9.
{ {
The constant load torque (friction +
unbalance) is 60% or more.
Select the motor so that the constant
load torque is 60% or less.
6 Is the unbalance torque high?
The constant load torque is less than
60%.
Investigate item 7.
{
The alarm was forcibly reset. Do not turn the drive unit's power
OFF when an overload alarm occurs.
(The NC power can be turned OFF.)
7 Was the overload alarm (50) forcibly
reset by turning the drive unit power
OFF?
The alarm was not forcibly reset. Investigate item 9.
{
There was an incorrect setting. Correctl y set. 8 Check the parameter settings.
The settings are correct. Investigate item 9.
{
Hot. Investigate item 10. 9 Measure the motor temperature
when the alarm occurs.
Not hot. Investigate item 12.
{ {
The fan motor was stopped. Investigate item 11.
The motor fan wind flow is poor. Clean.
10 When using a motor with fan, check
whether the fan is stopped, or
whether it is clogged with dust, etc.
There is no problem. Investigate item 12.
{ {
The cable is broken. Replace the cable. 11 Check the fan wiring.
The cable is not broken. Replace the fan.
{ {
Improved. Replace the drive unit. 12 Try replacing the drive unit.
Not improved. Replace the motor.
{ {
Alarm No.
4E
NC command mode error
A spindle control mode selection outside the specifications was input.
Investigation details Investigation results Remedies SV SP
The alarm always occurs at the same
position.
Check the NC and PLC program
process.
1 Pinpoint where the alarm occurs in
the PLC program.
The alarm occurs irregularly. Investigate item 2.
{
The alarm occurs during position
control.
Check the NC and PLC program
process.
2 Does the alarm occur when position
control (C-axis, spindle
synchronization, synchronous tap) is
started?
The alarm occurs during speed
control.
Check the NC and PLC program
process.
(If the cause cannot be pinpointed,
replace the drive unit, and confirm.)
{
6. Troubleshooting
6 - 26
Alarm No.
50
Overload 1
The overload detection level reached 100% or more. The motor or drive unit is in the overload state.
Investigation details Investigation results Remedies SV SP
The standard values (below) are not
set.
Servo : SV021 = 60, SV022 = 150
Spindle : SV063 = 60, SP064 = 110
Set the standard values.
1 Check the overload parameters.
Servo : SV021, SV022
Spindle : SP063, SP064
The standard values are set. Investigate item 2.
{ {
The load is large. Servo : Investigate item 3.
Spindle : Investigate item 7.
2 Check the overload % (servo) or load
meter (spindle).
The load is not large. Investigate item 9.
{ {
Resonance is occurring. Adjust the parameters.
• Set the notch filter.
• Lower VGN1 (SV005).
3 Check whether machine resonance is
occurring.
Resonance is not occurring. Investigate item 4.
{
The motor is hunting. Adjust the parameters.
• Increase VGN1 (SV005).
• Lower VIA (SV008).
4 Check whether the shaft sways when
the motor is stopped. (Hunting)
The motor is not hunting. Investigate item 5.
{
The motor brakes are not released. Correct the faulty section. 5 Check the brake operation
Check the brake relay.
Check the connector (CN20)
connection.
The motor brake operation is normal. Investigate item 6.
{
The cutting load is large. Lower the cutting load.
There is interference with the
positioning pin.
When using the positioning pin, turn
the servo OFF when stopped.
An excessive force is applied from
the machine.
Check whether the ball screw is bent,
or whether there is a fault in the
guide.
6 Check the load current with the NC
Servo Monitor, and investigate the
machine load.
The machine load is not large. Investigate item 8.
{
There is a problem. Adjust the PLG output waveform. 7 Check the PLG output waveform.
Normal Investigate item 8.
{
The motor performance is
insufficient.
Lower the acceleration/deceleration
rate or cutting load.
8 Confirm the motor capacity selection
again.
The motor performance is sufficient. Investigate item 9.
{ {
Improved. Replace the drive unit. 9 Try replacing the drive unit.
Not improved. Replace the motor.
{ {
(Note) NR and PR resetting are not possible when the overload level is 50% or more. Do not forcibly reset (AR) by turning the unit
power OFF. If AR resetting is used at 50% or higher, the level is set to 80% when the power is turned ON next. (Servo)