FANUC Alpha Series Motors and Modular Drives. Maintenance Manual (GFZ-65165E/02)

3. TROUBLESHOOTING

AND ACTION

TROUBLESHOOTING

B-65165E/02

3.4.1.20 Alarm code 30

An excessively large current is detected at the input of the 3-phase main

circuit of the PSM.

(1) If the PSM indicates alarm code 1

Troubleshoot according to the description of alarm code

provided in Section 3.1 of Part II.

(2) If the PSM indicates no alarm

(a) A cable is faulty.

The connection cable between the PSM (JX1B) and SPM

(JX1A) is faulty. Replace the cable.

(b) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

3.4.1.21

Alarm code 31

The motor failed to rotate as specified, and has stopped or is rotating at

a very low speed.

(1)

If the motor rotates at a very low speed and this alarm is issued

(a) The setting of a parameter is incorrect.

Referring to "FANUC AC SPINDLE MOTOR α series

Parameter Manual (B-65160E)," check the parameter for

sensor setting.

(b) The motor phase sequence is incorrect.

Check if the motor phase sequence is correct.

Check if the phase A/B signals are connected correctly.

(d) The feedback cable of the motor is faulty.

Rotate the motor manually to see if a speed is indicated in the

item of motor speed on the CNC diagnosis screen or on the

spindle check board. If no speed indication is provided,

replace the cable or spindle sensor (or motor).

(2)

If the motor does not rotate at all and this alarm is issued

(a) The sequence for locking the spindle is incorrect.

Check the sequence to see if the spindle is locked.

(b) The power line is faulty.

Check if the power line is connected to the motor correctly.

If spindle switching or winding switching is performed,

check if the magnetic contactor is on.

Replace the SPM.

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3. TROUBLESHOOTING

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3.4.1.22 Alarm code 32

LSI memory for serial communication is abnormal. A check is made

when the power is turned on.

If this alarm is issued, replace the SPM or SPM control printed circuit

board.

3.4.1.23 Alarm code 33

The PSM could not be charged within a specified time.

PSM input has an open phase.

(1) If the PSM indicates alarm code 5

Troubleshoot according to the description of alarm code

provided in Section 3.1 of Part II.

(2) If the PSM indicates no alarm

(a) A cable is faulty.

The connection cable between the PSM (JX1B) and SPM

(JX1A) is faulty. Replace the cable.

(b) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

3.4.1.24 Alarm code 34

Parameter data outside the specifiable range was set.

Troubleshooting when this alarm is issued

Connect the spindle check board.

The spindle check board displays "AL-34" and "F-xxx"

alternately. "F-xxx" indicates a parameter number outside the

specifiable range. For the correspondence between the CNC

parameter numbers and "F-xxx," refer to "FANUC AC SPINDLE

MOTOR α series Parameter Manual (B-65160E)."

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3. TROUBLESHOOTING

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TROUBLESHOOTING

B-65165E/02

3.4.1.25 Alarm code 35

The gear ratio set in a parameter exceeds the value range allowable for

internal processing. This alarm is issued with a parameter related to

orientation of magnetic sensor type.

Troubleshooting when this alarm is issued

(a) The gear ratio set in a parameter is incorrect.

Check if an excessively large gear ratio is set.

FS0

FS15i

FS16i/16, PM-D/F

Description

6556

3056

4056

Gear ratio between the spindle and

motor

6559

3059

4059

6560

3060

4060

Position gain at orientation

6563

3063

4063

3.4.1.26

Alarm code 36

The error counter overflowed.

(1) The setting of a parameter is incorrect.

(a) The gear ratio set in a parameter is incorrect.

Check if an excessively large gear ratio is set.

(b) The setting of a position gain is incorrect.

If the gear ratio data is correct, increase the position gain.

setting of spindle and motor rotation directions is incorrect.

FS0

FS15i

FS16i/16, PM-D/F

Description

6556

3056

4056

Gear ratio between the spindle and

motor

6559

3059

4059

6565

3065

4065

Position gain in the servo

mode/spindle synchronization

6568

3068

4068

6569

3069

4069

Position gain in Cs contour control

6572

3072

4072

(2) Sequence error

(a) Check if the motor is deactivated (by turning off SFR/SRV)

in a position control mode (rigid tapping, Cs contour control,

or spindle synchronization).

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3. TROUBLESHOOTING

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3.4.1.27 Alarm code 37

After emergency stop signal input, the motor is accelerated without

being decelerated. This alarm is issued also when the motor is not

deactivated

(the motor is not decelerated completely) when the

acceleration/deceleration time (initial parameter setting: 10 seconds)

has elapsed after emergency stop signal input.

Troubleshooting when this alarm is issued

(a) The parameter setting of the speed detector is incorrect.

Referring to Chapter 1 in "FANUC AC SPINDLE MOTOR

α series Parameter Manual (B-65160E)," set a correct time.

(b) The parameter setting of an acceleration/deceleration time is

not proper.

Check the parameter-set value and actual acceleration/

deceleration time, then set an actual acceleration/

deceleration time plus some margin.

FS0

FS15i

FS16i/16, PM-D/F

Description

6582

3082

4082

Acceleration/deceleration time

setting

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3. TROUBLESHOOTING

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B-65165E/02

3.4.2

Alarm Code 39

The position where the one-rotation signal for Cs contour control is

generated is incorrect. This alarm is not issued when the parameter

indicated below is not set.

<1> When SPM TYPE2 is used, phase A/B/Z on the high-resolution

(1000 to 3000 λ) side of the high-resolution magnetic pulse coder

on the spindle side has a problem.

<2> When SPM TYPE4 is used, the spindle sensor connected to JY5 is

faulty.

Troubleshoot as in the case of alarm code 41.

FS0

FS15i

FS16i/16, PM-D/F

Description

6516#5

3016#5

4016#5

Whether the function for detecting

the one-rotation signal of the

detector for Cs contour control is

provided

1: The function is provided.

Troubleshooting when this alarm is issued (at the time of reference

position return on the Cs axis)

(a)

The setting of a parameter is incorrect.

Referring to Chapter 2 in "FANUC AC SPINDLE MOTOR

α series Parameter Manual

(B-65160E)," check the

parameter for sensor setting.

(b)

The sensor is not adjusted correctly.

Adjust the sensor according to Subsection 4.3.4 of Part I of

this manual. If the signal is not observed, replace the sensor.

(c)

The shielding of the cable between the preamplifier and

SPM is faulty.

Shielded cable

Referring to Chapter 9, "Connection," in "FANUC SERVO

AMPLIFIER α series Descriptions (B-65162E)," check the

shielding of the cable.

(d)

The signal cable is bundled with the servo motor power line.

If the cable between the preamplifier and SPM is bundled

with the servo motor power line, separate them from each

The cable is

other.

connected to the

connected to

pin specified in the

pin 10 on the

(e)

Improve the cable routing between the motor and

specifications on

SPM side.

preamplifier.

the sensor side.

If the cables

(including those within a terminal box)

extending from the motor to the preamplifier are close to the

power line, separate the cables from the power line.

(f)

The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

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3. TROUBLESHOOTING

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3.4.2.1

Alarm code 40

The one-rotation signal for Cs contour control is not generated.

<1> When SPM TYPE2 is used, phase A/B/Z on the high-resolution

(1000 to 3000 λ) side of the high-resolution magnetic pulse coder

on the spindle side has a problem.

<2> When SPM TYPE4 is used, the spindle sensor connected to JY5 is

faulty.

Troubleshoot as in the case of alarm code 42.

Troubleshooting when this alarm is issued (at the time of reference

position return on the Cs axis)

(a) The setting of a parameter is incorrect.

Referring to Chapter 2 in "FANUC AC SPINDLE MOTOR

α series Parameter Manual

(B-65160E)," check the

parameter for sensor setting.

(b) The sensor is not adjusted correctly.

Adjust the sensor according to Subsection 4.3.4 of Part I of

this manual. If the signal is not observed, replace the sensor.

Check the check pin PSD on the check board. If the signal is

not observed per sensor rotation, replace the cable.

(d) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

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3. TROUBLESHOOTING

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TROUBLESHOOTING

B-65165E/02

3.4.2.2 Alarm code 41

<1> The position where the one-rotation signal of the α position coder

is generated is incorrect.

<2> The position where the one-rotation signal of the MZ sensor or BZ

sensor is generated is incorrect.

<3> The position where the one-rotation signal of α position coder S is

generated is incorrect.

(1) If orientation based on the external one-rotation method is used

(a) The settings of parameters are incorrect.

Check that the gear ratio data matches the specification of

the machine.

FS0

FS15

FS15i

FS16i/16, PM-D/F

Description

6935

3315

3171

4171

Number of teeth on the spindle

6937

3317

3173

4173

side

6936

3316

3172

4172

Number of teeth on the position

6938

3318

3174

4174

detector side

(b) Slippage between the spindle and motor

Check that there is no slippage between the spindle and

motor. Orientation based on the external one-rotation

α position coder

method is not applicable to V-belt connection.

Shielded cable

(2)

Troubleshooting in other cases

(a) The setting of a parameter is incorrect.

Referring to "FANUC AC SPINDLE MOTOR α series

Parameter Manual (B-65160E)," check the parameter for

sensor setting.

(b) A sensor (MZ sensor or BZ sensor) is not adjusted correctly.

Connected to the

frame

Adjust the sensor according to Subsection 4.3.4 of Part I of

ground via a cable clamp.

this manual. If the signal is not observed, replace the sensor.

MZ or BZ sensor

Check the check pin PSD on the spindle check board. If the

Shielded cable

signal is not generated per rotation, replace the position

coder.

(d) The shielding of the cable between the sensor and SPM is

faulty.

Referring to Chapter 9, "Connection," in "FANUC SERVO

AMPLIFIER α series Descriptions (B-65162E)," check the

The cable is

The cable

shielding of the cable.

connected to the

connected to

(e) The signal cable is bundled with the servo motor power line.

pin specified in

pin 10 on the

the specifications

SPM side.

If the cable between the sensor and SPM is bundled with the

on the sensor

servo motor power line, separate them from each other.

side.

(f) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

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3. TROUBLESHOOTING

B-65165E/02

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3.4.2.3 Alarm code 42

<1> The one-rotation signal of the α position coder is not generated.

<2> The one-rotation signal of the MZ sensor or BZ sensor is not

generated.

<3> The one-rotation signal of α position coder S is not generated.

Troubleshooting when this alarm is issued

(a) The setting of a parameter is incorrect.

Referring to "FANUC AC SPINDLE MOTOR α series

Parameter Manual (B-65160E)," check the parameter for

sensor setting.

(b) The MZ sensor or BZ sensor is not adjusted correctly.

Adjust the sensor according to Subsection 4.3.4 of Part I of

this manual. If the sensor cannot be adjusted or the signal is

not observed, replace the connection cable and sensor.

Check the check pin PSD on the spindle check board. If the

signal is not generated per rotation, replace the connection

cable and position coder.

(d) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

3.4.2.4 Alarm code 43

The position coder signal of the spindle on the mater side used in the

differential speed mode is disconnected.

Troubleshoot as in the case of alarm code 27.

3.4.2.5 Alarm code 44

An error occurred in the A/D converter.

When this alarm is issued, replace the SPM or SPM control printed

circuit board.

3.4.2.6 Alarm code 46

The one-rotation signal of the position coder cannot be detected

normally during thread cutting.

Troubleshoot as in the case of alarm code 41.

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3. TROUBLESHOOTING

AND ACTION

TROUBLESHOOTING

B-65165E/02

3.4.2.7 Alarm code 47

<1> The count value of α position coder signal pulses is abnormal.

<2> The pulse count value of the MZ sensor or BZ sensor is abnormal.

Phases A and B for the position coder have a feedback pulse count of

4096 p/rev per spindle rotation. The SPM checks the pulse counts of

phases A and B equivalent to the position coder each time a one-

rotation signal is generated. The alarm is issued when a pulse count

beyond the specified range is detected.

(1)

If this alarm is issued when the cable is moved (as in the case

where the spindle moves)

(a) The connector has a bad contact, or the cable is

disconnected.

α position coder

The conductor may be broken. Replace the cable. If coolant

Shielded cable

has penetrated into the connector, clean the connector.

(2)

Troubleshooting in other cases

(a) The setting of a parameter is incorrect.

Referring to "FANUC AC SPINDLE MOTOR α series

Parameter Manual (B-65160E)," check the parameter for

sensor setting.

Connected to the frame

(b) A sensor (MZ sensor or BZ sensor) is not adjusted correctly.

ground via a cable clamp.

Adjust the sensor according to Subsection 4.3.4 of Part I of

MZ or BZ sensor

this manual.

Shielded cable

faulty.

Referring to Chapter 9, "Connection," in "FANUC SERVO

AMPLIFIER α series Descriptions (B-65162E)," check the

shielding of the cable.

(d) The signal cable is bundled with the servo motor power line.

The cable is

If the cable between the sensor and SPM is bundled with the

connected to the

connected to

pin specified in

pin 10 on the

servo motor power line, separate them from each other.

the specifications

SPM side.

(e) The SPM is faulty.

on the sensor

side.

Replace the SPM or SPM control printed circuit board.

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3.4.2.8 Alarm code 49

In the differential speed mode, the spindle speed on the master side

(remote) converted to a motor speed on the slave side (local) exceeded

the maximum allowable speed of the motor.

Troubleshooting when this alarm is issued

A differential speed is calculated by multiplying the speed on the

target speed by a gear ratio.

Ensure that the maximum allowable speed of the motor is not

exceeded.

3.4.2.9 Alarm code 50

A value obtained by internal calculation in spindle synchronization

exceeded the allowable range.

Troubleshooting when this alarm is issued

(a) The setting of parameters for gear ratio setting is incorrect.

Check if an excessively large gear ratio is set.

(b) Position gain setting limit

If correct gear ratio data is set, increase the position gain

value in spindle synchronization.

FS0

FS15i

FS16i/16, PM-D/F

Description

6556

3056

4056

Gear ratio between the spindle and

motor

6559

3059

4059

6565

3065

4065

Position gain in the servo

mode/spindle synchronization

6568

3068

4068

3.4.2.10 Alarm code 51

The PSM detected that the DC link voltage was excessively low.

(1) If the PSM indicates alarm code 4

Troubleshoot according to the description of alarm code

provided in Section 3.1 of Part II.

(2) If the PSM indicates no alarm

(a) A cable is faulty.

The connection cable between the PSM (JX1B) and SPM

(JX1A) is faulty. Replace the cable.

(b) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

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3.4.2.11 Alarm codes 52 and 53

The synchronization signal (ITP) in communication data transferred to

and from the CNC stopped.

Troubleshooting when this alarm is issued

(a) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

(b) The CNC is faulty.

Replace the board or module related to the serial spindle.

3.4.2.12 Alarm code 54

A large current flowing in the motor for a long time was detected.

Troubleshoot as in the case of alarm code 29.

3.4.2.13 Alarm code 55

In spindle switching control or output switching control, a mismatch

between the switching request signal (SPSL or RSL) and the power line

state check signal (MCFN, MFNHG, RCH, or RCHHG) continues

during motor activation.

Troubleshooting when this alarm is issued

(a) The magnetic contactor

(switch unit) for power line

switching is faulty.

If the contact is inoperative, check the power supply of the

magnetic contactor. If the magnetic contactor is still

inoperative, replace the magnetic contactor.

(b) The I/O unit or wiring for checking the contact of the

magnetic contactor is faulty.

If a defect is found in the I/O unit or wiring, replace the I/O

unit or wiring.

Modify the sequence so that switching is not performed

during activation. For details of the signals, refer to Chapter

10, "Interface Signals," in "FANUC SERVO AMPLIFIER α

series Descriptions (B-65162E)."

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3.4.2.14 Alarm code 56

The cooling fan of the control circuit stopped.

When this alarm is issued, replace the SPM or the internal cooling

fan of the SPM. When replacing the internal cooling fan, see

Chapter 4.

3.4.2.15 Alarm code 57

The temperature of the regenerative resistance of the PSM (resistance

regenerative type) is excessively high. The PSM is faulty.

(1) If the PSM indicates alarm code 8 or above

Troubleshoot according to the description of alarm code 8 (or the

pertinent code) provided in Section 3.1 of Part II.

(2) If the PSM indicates no alarm

(a) A cable is faulty.

The connection cable between the PSM (JX1B) and SPM

(JX1A) is faulty. Replace the cable.

(b) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

3.4.2.16 Alarm code 58

The temperature of the main circuit-cooling fan of the PSM is

abnormally high.

(1) If the PSM indicates alarm code 3

Troubleshoot according to the description of alarm code

provided in Section 3.1 of Part II.

(2) If the PSM indicates no alarm

(a) A cable is faulty.

The connection cable between the PSM (JX1B) and SPM

(JX1A) is faulty. Replace the cable.

(b) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

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3.4.2.17 Alarm code 59

The internal cooling fan of the PSM stopped.

(1) If the PSM indicates alarm code 2

Troubleshoot according to the description of alarm code

provided in Section 3.1 of Part II.

(2) If the PSM indicates no alarm

(a) A cable is faulty.

The connection cable between the PSM (JX1B) and SPM

(JX1A) is faulty. Replace the cable.

(b) The SPM is faulty.

Replace the SPM or SPM control printed circuit board.

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3.4.3

αC Series Spindle Amplifier Module

For the αC series, only those alarm codes that have the same number as

for the α series and require troubleshooting different from the α series

are described.

For an alarm code not covered by this subsection, see the description of

the alarm code for the α series spindle amplifier module.

3.4.3.1

Alarm code 12

An excessively high motor current was detected.

An excessively high current flowed into the DC link of the main circuit.

For SPMC-2.2 to SPMC-11

The power module (IPM) of the main circuit detected an excessive load,

excessively high current, or decrease in control supply voltage.

(1)

If an SPMC from SPMC-2.2 to SPMC-11 indicates this alarm

Check alarm code 09 as well.

(2)

If this alarm is issued immediately after a spindle move command

is specified

(a) The motor power line is faulty.

Check for a short circuit between motor power lines and

short-circuit to ground, and replace the power line as

required.

(b) The motor winding has an insulation failure.

If the motor is short-circuited to ground, replace the motor.

Refer to "FANUC AC SPINDLE MOTOR α series

Parameter Manual (B-65160E)."

(d) The SPMC is faulty.

A power element (IGBT, IPM) may be destroyed. Replace

the SPMC.

(3)

If this alarm is issued during spindle rotation

(a) Belt slippage

The belt between the spindle and motor may be slipping.

Clean the pulley and run the belt again.

(b) The parameters specific to the motor are not set correctly.

Referring to "FANUC AC SPINDLE MOTOR α series

Parameter Manual

(B-65160E)," check the parameters

specific to the motor.

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3. TROUBLESHOOTING

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TROUBLESHOOTING

B-65165E/02

A power element (IGBT, IPM) may be destroyed. Replace

the SPM.

If the amplifier setting condition is not satisfied, or cooling is

insufficient because the heat sink is dirty, the power

elements may be destroyed.

When the heat sink on the back of the amplifier is too dirty,

clean the heat sink, for example, by blowing air. Consider

the use of a structure that prevents the heat sink from being

directly exposed to coolant.

For the setting condition, refer to "FANUC SERVO

AMPLIFIER α series Descriptions (B-65162E)."

3.4.3.2

Alarm code 35

The motor speed calculated from the position coder much differs from

the motor speed estimated in the SPMC.

(1) If this alarm is issued when a rotation command is specified

(a) The setting of parameters for position coder setting is

incorrect.

Set the bits related to the rotation directions of the position

coder and spindle and the rotation directions of the spindle

and motor. For details, refer to "FANUC AC SPINDLE

MOTOR α series Parameter Manual (B-65160E)."

(b) The setting of parameters for gear ratio setting is incorrect.

Check if incorrect gear ratio data is set. The gear ratio data is

used for conversion from the position coder to a motor speed.

So, be sure to set correct values.

FS0

FS15i

FS16i/16, PM-D/F

Description

6556

3056

4056

Gear ratio between the spindle and

motor

6559

3059

4059

Make an adjustment to prevent the belt from slipping.

(2) If this alarm is issued during cutting

The motor speed is decreased because of an overload. Review the

cutting condition.

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3.5

POWER-FAILURE BACKUP MODULE

When an alarm is issued, the one-digit 7-segment LED indicates an

alarm code.

Indicates an alarm code (01 or above).

3.5.1

Alarm Code 1

(1) Meaning

Sub-module C cannot be charged.

(2) Cause and troubleshooting

(a) Sub-module C connection error

→ Check the connection.

(b) Charging circuit failure

→ Replace the power-failure backup module.

3.5.2

Alarm Code 2

(1) Meaning

After sub-module C was charged, the voltage decreased for a

cause.

(2) Cause and troubleshooting

(a) Charging circuit failure

→ Replace the power-failure backup module.

3.5.3

Alarm Code 3

(1) Meaning

An abnormal current flowed in sub-module R.

(2) Cause and troubleshooting

(a) Excessive regenerated power

→ If the sum of maximum servo motor outputs exceeds 20

kW, use two sub-module R units.

(b) Regenerative circuit failure

→ Replace the power-failure backup module.

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3. TROUBLESHOOTING

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3.5.4

Alarm Code 4

(1) Meaning

The regenerative resistance in sub-module R is overheated.

(2) Cause and troubleshooting

(a) Sub-module R is placed in conductive state at all times

because of a regenerative circuit failure.

→ Replace the power-failure backup module.

3.5.5

Alarm Code 5

(1) Meaning

The supply voltage for driving the thyristor decreased.

(2) Cause and troubleshooting

(a) The power supply circuit for driving the thyristor is

abnormal.

→ Replace the power-failure backup module.

- 174 -

4. HOW TO REPLACE THE FUSES

AND PRINTED CIRCUIT BOARDS

TROUBLESHOOTING

B-65165E/02

(1) Power supply module

Case

Fuse

Model

Drawing No.

disassembly

replacement

PSM-5.5 to 11

A06B-6077-H106 to 111

4.1.1

4.2.1(1)

PSM-15 to 37

A06B-6087-H115 to 137

4.1.2

4.2.1(1), (3)

A06B-6077-H115 to 130

4.1.2

4.2.1(2), (3)

A06B-6071-H115 to 130

4.1.3

4.2.1(2), (3)

PSM-45, 55

A06B-6087-H145 to 155

4.1.4

4.2.1(1)

PSM-15HV to 45HV

A06B-6091-H115 to 145

4.1.2

4.2.1(1), (3)

PSM-75HV

A06B-6087-H175

4.1.4

4.2.1(1)

PSMR-3, 5.5

A06B-6081-H103, H106

4.1.1

4.2.1(4), (5)

PSMV-11HV

A06B-6098-H111

4.1.2

4.2.1(1), (6)

(2) Servo amplifier module

Case

Fuse

Model

Drawing No.

disassembly

replacement

SVM1-12 to 130

A06B-6079-H101 to H106

4.1.1

4.2.2(1)

A06B-6096-H101 to H106

SVM1-240, 360

A06B-6079-H107, H108

4.1.2

4.2.2(1),

A06B-6096-H107, H108

4.2.3(2)

SVM2-12/12 to

A06B-6079-H201 to H209

4.1.1

4.2.2(1)

80/80

A06B-6096-H201 to H209

SVM3-12/12/12 to

A06B-6079-H301 to H307

4.1.1

4.2.2(1)

SVM3-20/20/40

A06B-6080-H301 to H307

A06B-6096-H301 to H307

SVM1-20HV to

A06B-6085-H102 to H104

4.1.1

4.2.2(1)

60HV

A06B-6097-H102 to H104

SVM2-20/20HV to

A06B-6085-H201 to H206

4.1.1

4.2.2(1)

SVM2-60/60HV

A06B-6097-H201 to H206

- 176 -

4. HOW TO REPLACE THE FUSES

B-65165E/02

TROUBLESHOOTING

AND PRINTED CIRCUIT BOARDS

(3) Spindle amplifier module

(In drawing numbers,

# and the

subsequent part is omitted.)

Replacement of

Case

Fuse

the program ROM

Model

Drawing No.

disassembly

replacement

and the spindle

sensor module

SPM-2.2 to 11 TYPE1

A06B-6102-H202 to H211

4.1.1

4.2.3(1)

4.3.1(1)

TYPE4

A06B-6102-H102 to H111

SPM-15 to 30 TYPE1

A06B-6102-H215 to H230

4.1.2

4.2.3(1), (2)

4.3.1(1)

TYPE4

A06B-6102-H115 to H130

SPM-45 to 55 TYPE1

A06B-6102-H245, H255

4.1.4

4.2.3(1)

4.3.1(1)

TYPE4

A06B-6102-H145, H155

SPM-2.2 to 11 TYPE1

A06B-6078-H102 to H211

4.1.1

4.3.1(2)

TYPE2

A06B-6078-H302 to H311

TYPE4

SPM-15 to 30 TYPE1

A06B-6088-H115 to H230

4.1.2

4.2.3(2)

4.3.1(2)

TYPE2

A06B-6088-H315 to H330

TYPE4

SPM-11 to 30 TYPE3

A06B-6088-H411 to H430

4.1.3

4.2.3(2)

4.3.1(3)

SPM-45 to 55 TYPE1

A06B-6088-H245, H255

4.1.4

4.2.3(2)

4.3.1(2)

TYPE2

A06B-6088-H345, H355

TYPE4

A06B-6088-H145, H155

SPM-45 TYPE3

A06B-6088-H445

4.1.5

4.3.1(3)

Old SPM15 to 30

A06B-6078-H215 to H330

4.1.3

4.2.3(2), (3)

4.3.1(6), (7)

Old SPM11

A06B-6078-H411

4.1.3

4.2.3(2), (3)

4.3.1(7)

SPMC2.2 to 11

A06B-6082-H202 to H211

4.1.1

4.3.1(4)

SPMC15 to 26

A06B-6082-H215 to H226

4.1.2

4.2.3(2)

4.3.1(5)

SPM11HV TYPE1

A06B-6104-H211

4.1.1

4.2.3(1)

4.3.1(1)

TYPE4

A06B-6104-H111

SPM15HV to 45HV TYPE1

A06B-6104-H215 to H245

4.1.2

4.2.3(1), (2)

4.3.1(1)

TYPE4

A06B-6104-H115 to H145

SPM75HV TYPE1

A06B-6104-H275

4.1.4

4.2.3(1)

4.3.1(1)

TYPE4

A06B-6104-H175

SPM11HV TYPE1

A06B-6092-H211

4.1.1

4.3.1(2)

TYPE2

A06B-6092-H311

TYPE4

A06B-6092-H111

SPM15HV to 45HV TYPE1

A06B-6092-H215 to H245

4.1.2

4.2.3(2)

4.3.1(2)

TYPE2

A06B-6092-H315 to H345

TYPE4

A06B-6092-H115 to H145

SPM75HV TYPE1

A06B-6092-H275

4.1.4

4.3.1(2)

TYPE2

A06B-6092-H375

TYPE4

A06B-6092-H175

SPM15HV to 45HV TYPE3

A06B-6092-H415 to H445

4.1.4

4.2.3(2)

4.3.1(3)

SPM75HV TYPE3

A06B-6092-H475

4.1.5

4.3.1(3)

(4) Power-failure backup module

Drawing No.

Case disassembly

Fuse replacement

A06B-6077-H001

4.1.1

4.2.4(1)

A06B-6077-H002

4.1.1

4.2.4(1)

- 177 -

4. HOW TO REPLACE THE FUSES

B-65165E/02

TROUBLESHOOTING

AND PRINTED CIRCUIT BOARDS

Case 2

Case 1

(cover)

(chassis)

Remove the screws fastening the case

and the screws (5 × M4) holding down

the terminal board.

Remove the printed-circuit board.

• Cases for the SVM

Control circuit board

Wiring board

Control circuit

printed-circuit

board

Remove the screws (2 × M3) fastening the

printed-circuit board.

• Cases for the PSM and SPM

Control circuit board

Remove the screws (4 × M3) fastening the

printed-circuit board.

Remove the IPM.

IPM

Wiring board

<1> Remove the screws (5 × M5) fastening the IPM.

Then remove the wiring board.

<2> Remove the IPM.

Note) There is a snubber capacitor between the IPM

and wiring board. When re-assembling, do not

forget to mount it.

- 179 -

4. HOW TO REPLACE THE FUSES

AND PRINTED CIRCUIT BOARDS

TROUBLESHOOTING

B-65165E/02

4.1.2

150 mm Width Module (without the Connector Module)

Make sure that the recharge-under-way LED (red) is off.

The recharge-under-way LED (red) is at the center of terminal board

TB1. Open the cover at the top of the module, and check the LED.

Recharge-under-way

Terminal

LED

board

Remove the face plate.

Face plate

Remove the face plate

by inserting the tip of a

flat-blade screwdriver

at the hooks

(six) on

the face plate.

Remove the case.

Screws (eight)

Fan

Remove the screws

(eight) fastening the

cases, and remove

Heat

Case

the case by pulling it

sink

off the flange

surface.

- 180 -

4. HOW TO REPLACE THE FUSES

B-65165E/02

TROUBLESHOOTING

AND PRINTED CIRCUIT BOARDS

Remove the printed-circuit board.

PCB supports (two)

Fan

Wiring

Printed-circuit

board

Heat

sink

Printed-circuit

board

PCB support

Hook

While spreading the PCB support hooks, pull the printed-circuit

board off the flange surface to remove it.

Remove the IGBT.

TB1

<1> Remove terminal board TB1 (for SPM

only).

<2> Remove the electrolytic capacitor

board.

<3> Remove the wiring board.

<4> Remove the IGBT.

Capacitor board

Wiring

board

IGBT

- 181 -

4. HOW TO REPLACE THE FUSES

AND PRINTED CIRCUIT BOARDS

TROUBLESHOOTING

B-65165E/02

4.1.3

150 mm Width Module (with the Connector Module)

Make sure that the recharge-under-way LED (red) is off.

The recharge-under-way LED (red) is at the center of terminal board

TB1. Open the cover at the top of the module, and check the LED.

Recharge-under-way

Terminal

LED

board

Remove the face plate.

Face plate

Remove the face

plate by inserting

the tip of a flat-blade

screwdriver at the

hooks (six) on the

face plate.

Remove connector PCB.

Remove the self-tapping screws holding down

connector PCB, and shift it in the direction

indicated with an arrow (left) to remove the

printed-circuit board.

Connector PCB

- 182 -

4. HOW TO REPLACE THE FUSES

B-65165E/02

TROUBLESHOOTING

AND PRINTED CIRCUIT BOARDS

Remove the case.

Screws (eight)

Fan

Remove the screws

(eight) fastening the

cases, and remove

Heat

the case by pulling it

Case

off the flange

sink

surface.

Remove the printed-circuit board.

PCB supports (two)

Fan

Printed-circuit

board

Wiring

board

Heat

sink

Printed-circuit

board

PCB support

Hook

While spreading the PCB support hooks, pull the printed-circuit

board off the flange surface to remove it.

- 183 -

4. HOW TO REPLACE THE FUSES

B-65165E/02

TROUBLESHOOTING

AND PRINTED CIRCUIT BOARDS

4.1.4

300-mm Wide Module (without the Connector Module)

Make sure that the recharge-under-way LED (red) is off. View the

recharge-under-way LED (red) from the upper part of the DC link

cover.

LED

Cover

Remove the DC link cover and motor power line cover.

DC link

cover

Remove the self-tapping

screws (8 × M4) from

the DC link cover and

motor power line cover.

Motor power

line cover

Remove the face plate.

Remove the screws

(5 × M4) from the

face plate.

Screw (× 5)

- 185 -

4. HOW TO REPLACE THE FUSES

AND PRINTED CIRCUIT BOARDS

TROUBLESHOOTING

B-65165E/02

Remove the right side plate.

Remove the

screws (7 × M4)

from the right side

Right side plate

plate.

Heat sink

Screw (7 × M4)

Remove the control printed circuit board.

Control printed circuit

board

Bottom plate

Control printed circuit

board

Heat sink

Hook

PCB support

Wiring board

Insert the tip of a screwdriver into the opening on the bottom

plate, and while spreading the hook of the PCB support, pull

the printed circuit board off the flange surface toward you.

- 186 -

4. HOW TO REPLACE THE FUSES

B-65165E/02

TROUBLESHOOTING

AND PRINTED CIRCUIT BOARDS

Remove the LED board for the recharge indicator.

LED board for the recharge indicator

Remove the

screws (2 × M4)

from the LED

board, and remove

the board.

Heat sink

Screw (× 2)

Remove the top plate.

<1> Remove the screws (2 × M5)

from the DC link jumper.

<2> Remove the screws (5 × M4)

from the top plate.

<3> Remove the top plate. (The top

plate comes off together with

the terminal block TB1.)

Screw (2 × M5)

Heat sink

Top plate

Screw (5 × M4)

Remove the driver printed circuit board.

<1> From the two connectors,

detach the cables of the current

Driver printed circuit board

sensor.

Screw × 3

<2> Remove the screws (3 × M4)

from the driver printed circuit

board.

<3> Pull up the driver printed circuit

board to remove it.

Carefully insert the tip of a screwdriver

and pull out the cable. (Be careful not

to force the screwdriver into the

Connector × 2

connector; otherwise, the claw may

break.)

- 187 -

FANUC Alpha Series Motors and Modular Drives. Maintenance Manual (GFZ-65165E/02) - page 7