bnp-b2365(eng)b.pdf - 第336页
6. Troubleshooting 6 - 31 Alarm No. 62 Frequency error The input power frequency excee ded the specified range. Investigation det ails In vestigation results Remedies CV CR The alarm occurs each time immediately after th…
6. Troubleshooting
6 - 30
Alarm No.
60
Instantaneous power failure
A drop in the 24VDC power was detected.
Investigation details Investigation results Remedies
CV CR
The voltage is not applied. Investigate item 3.
The voltage is 20.4VDC or less. Increase the power voltage.
The voltage drops below 20.4VDC
sometimes.
Investigate item 4.
1 Is 24VDC applied on the CN22
connector?
Is the voltage low, or does it drop
sometimes?
The voltage is correctly applied. Investigate item 2.
{
The LEDs are not ON. Replace the unit. 2 Are the LEDs on the CR unit ON?
The LEDs are ON. Investigate item 4.
{
The power is abnormal. Replace the power. 3 Check the wiring and power voltage.
The wiring or connectors are
abnormal.
Replace the cable.
{
A voltage drop is not observed. Check the wiring. 4 Check whether the voltage is
dropping because of another load.
A voltage drop is observed. Increase the power capacity.
{
Alarm No.
61
Power module overcurrent
The power module's overcurrent protection function activated.
Investigation details Investigation results Remedies
CV CR
The alarm occurs immediately after
200VAC is supplied and after READY
is turned ON.
Replace the unit.
The alarm occurs frequently during
READY ON.
Investigate item 3.
1 Check the state of the operation
when the alarm occurs, and check
the repeatability.
The alarm occurs after continuous
operation for a long time.
The unit is hot.
Investigate item 2.
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The total load of all motors exceeds
the rated capacity of the power
supply unit.
Lower the motor load and operation
frequency.
2 Check the load state of all motors,
and the starting/stopping frequency.
The total does not exceed the
capacity.
Investigate item 3.
{
The power capacity is insufficient. Increase the power capacity. 3 Check the power capacity.
The specified power capacity is
secured.
Investigate item 4.
{
The voltage drops to 170V or less
occasionally.
Increase the power capacity.
The difference of the voltage across
wires is 10V or more.
Improve the power phase balance.
4 Measure the voltage across wires.
• Is the voltage 170V or more even
when the motor is accelerating?
The difference of the voltage across
wires is less than 10V.
Investigate item 5.
{
The power voltage is distorted. Improve the source of the distortion.
Install an AC reactor.
5 Measure the power voltage with a
synchroscope, and check whether
there is any distortion.
• Are there any other devices
causing the power distortion?
The power voltage waveform is not
abnormal.
Investigate item 6.
{
No abnormality is found in particular. Replace the unit. 6 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
The grounding is incomplete.
An alarm will occur easily if another
device operates.
Take remedies according to the
causes of the abnormality.
Ex. Incomplete grounding:
Additionally ground.
Noise: Noise measures for
other devices.
{
6. Troubleshooting
6 - 31
Alarm No.
62
Frequency error
The input power frequency exceeded the specified range.
Investigation details Investigation results Remedies
CV CR
The alarm occurs each time
immediately after the power is turned
ON. Or, the ala rm occurs
occasionally regardless of the
operation state.
Investigate item 2.
1 Check the state of the operation
when the alarm occurs, and check
the repeatability.
The alarm occurs only while the
motor is accelerating/decelerating.
Investigate item 3.
{
The frequency is deviated from
50Hz±3% or 60Hz±3%.
Review the power facilities.
The voltage waveform dips at some
sections.
Improve the source of the distortion.
Install an AC reactor.
2 Measure the power voltage waveform
during normal operation.
There is no problem. Investigate item 4.
{
The frequency greatly fluctuates
during acceleration/deceleration.
Review the power facilities.
The voltage waveform during
deceleration dips in some sections.
Improve the source of the distortion.
Install an AC reactor.
3 Measure the power voltage when the
motor is accelerating/decelerating.
There is no problem. Investigate item 4.
{
No abnormality is found in particular. Replace the unit. 4 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
The grounding is incomplete.
An alarm will occur easily if another
device operates.
Take remedies according to the
causes of the abnormality.
Ex. Incomplete grounding:
Additionally ground.
Noise: Noise measures for
other devices.
{
Alarm No.
63
Auxiliary regeneration error
The auxiliary regenerative transistor is still ON.
Investigation details Investigation results Remedies
CV CR
Cutting oil or oil mist is adhered on
the regenerative resistor.
Take measure to prevent cutting oil
and dust from getting on the fins at
the back of the unit, and then carry
out investigation details 2.
1 Check whether the regenerative
resistor on the back of the unit is dirty.
The resistor is not dirty. Replace the unit.
{
There is continuity. Replace the unit. 2 Using a tester, check the continuity of
the terminal block and resistor
surface.
The resistance value is ∞. Clean the resistor or fins.
{
Alarm No.
65
Rush relay error
The rush resistance short-circuit relay does not turn ON.
Investigation details Investigation results Remedies
CV CR
The alarm occurs each time READY
is turned ON.
Replace the unit. 1 Check the repeatability.
The alarm occurs occasionally. Investigate item 2.
{
No abnormality is found in particular. Replace the unit. 2 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
The grounding is incomplete.
An alarm will occur easily if another
device operates.
Take remedies according to the
causes of the abnormality.
Ex. Incomplete grounding:
Additionally ground.
Noise: Noise measures for
other devices.
{
Alarm No.
67
Phase failure
There is a phase failure in the input power.
Investigation details Investigation results Remedies
CV CR
There are phases with no voltage. Correct the power supply. 1 Check the voltage for each input
phase.
There is no problem. Investigate item 2.
{
2 Check the alarm No. "71" items.
{
6. Troubleshooting
6 - 32
Alarm No.
68
Watch dog
The system is not operating normally.
Investigation details Investigation results Remedies
CV CR
The alarm occurs each time READY
is turned ON.
Replace the unit. 1 Check the repeatability.
The alarm occurs occasionally. Investigate item 2.
{ {
No abnormality is found in particular. Replace the unit. 2 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
The grounding is incomplete.
An alarm will occur easily if another
device operates.
Take remedies according to the
causes of the abnormality.
Ex. Incomplete grounding:
Additionally ground.
Noise: Noise measures for
other devices.
{ {
Alarm No.
69
Ground fault
The motor power cable is contacting FG (ground).
Investigation details Investigation results Remedies
CV CR
100kΩ or less.
The motor or power cable may be
ground faulted.
1 Measure the insulation across the U,
V, W phase cables for all motors and
the ground. (Carry out a megger
test.)
100kΩ or more.
Investigate item 2.
{ {
Oil has come in contact. Take measures so that oil does not
come in contact. Check the motor's
cannon connector and the inside of
the terminal box, and clean as
necessary.
2 Has oil come in contact with the
motor or power cable?
Oil has not come in contact. Investigate item 3.
{ {
1MΩ or less.
Replace the motor or cable.
3 Measure the insulation again.
1MΩ or more.
Investigate item 2.
{ {
100kΩ or less.
Replace the drive unit.
4 Measure the resistance across the U,
V, W phase terminals of the
servo/spindle drive unit and the
ground.
(Do not measure the insulation, as
the unit could be damaged.)
100kΩ or more.
Replace the power supply unit.
{ {
Alarm No.
6A
External contactor melting
The external contactor's contact has melted.
Investigation details Investigation results Remedies
CV CR
An alarm has occurred. Remove the cause of the alarm on
the drive side, and then carry out the
investigation details 2.
1 Check whether any alarm has
occurred on the drive unit side.
An alarm has not occurred. Investigate item 2.
{
The contactor has melted. Replace the contactor. 2 Check whether the contactor's
contact has melted.
The contactor has not melted. Investigate item 3.
{
The connection is correct. Correctly connect. 3 Check that the contactor excitation
wiring is correctly connected from the
power supply unit's MC1 terminal.
The connection is incorrect. Replace the po wer supply unit.
{