FANUC SERVO AMPLIFIER a series. DESCRIPTIONS (B-65162E/03)

B-65162E/03

4. SPECIFICATIONS

[How to calculate the power equipment capacity]

Calculate the power equipment capacity using the formula below.

Rated capacity calculated in Section 3.3 or 3.4 (kW)

Power supply

capacity (kVA)

Rated capacity of power supply module (kW)

Power supply capacity of power supply

× module having rated output (kVA)

(See Table 4.1.1 (a), (b))

NOTE

Select a power supply for which, when the motor is

accelerated, the input voltage variation does not exceed 7%

(see Subsection 5.2.1 for details).

[How to calculate the input current of the PSM (PSMR)]

Calculate the input current of the PSM (PSMR) by using the formula

below. Refer to the result when selecting the MCC, power cable, and

circuit breaker 1, to be connected to the PSM input section.

Power equipment capacity (kVA)

PSM input

× 1.2 (margin)

current (Arms)

Ǹ3 Nominal supply voltage (Vrms)

NOTE

Normally, assume the nominal supply voltage (Vrms) to be

200Vrms.

4. SPECIFICATIONS

B-65162E/03

4.1.2

Servo Amplifier Module

Table.4.1.2 (a) Specifications (common)

(SVM)

Item

Specifications

Sine-wave PWM control with transistor (IGBT)

Main circuit control method

bridge

Table.4.1.2 (b) Specifications (individual) (1/2)

Servo amplifier module

Applicable

Rated output

Nominal

motor

current

current limit

Connec-

Model name

model

[Arms]

[Ap]

tion axis

SVM1-12

SVM2-12/12

L, M

α1/3000

SVM2-12/20

α2/2000

SVM2-12/40

α2/3000

SVM3-12/12/12

L, M, N

3.0

β0.5/3000

SVM3-12/12/20

L, M

β1/3000

SVM3-12/20/20

β2/3000

SVM3-12/12/40

L, M

SVM3-12/20/40

SVM1-20

SVM2-12/20

αM2/3000

SVM2-20/20

L, M

αM2.5/3000

SVM2-20/40

αC3/2000

SVM3-12/12/20

αC6/2000

5.9

SVM3-12/20/20

M, N

αC12/2000

SVM3-20/20/20

L, M, N

β3/3000

SVM3-12/20/40

β6/2000

SVM3-20/20/40

L, M

α3/3000

SVM1-40S

5.9

α6/2000

SVM2-12/40

SVM2-20/40

α3/3000

SVM2-40/40

L, M

α6/2000

12.5

SVM3-12/12/40

α12/2000

SVM3-12/20/40

αC22/1500

SVM3-20/20/40

SVM1-40L

α3/3000

SVM2-40/80

α6/2000

SVM2-40L/40L

L, M

α12/2000

12.5

α22/1500

αC22/1500

B-65162E/03

4. SPECIFICATIONS

Table.4.1.2 (b) Specifications (individual) (continued) (2/2)

Servo amplifier module

Rated output

Nominal

Applicable

Con-

current

current limit

motor model

Model name

nection

[Arms]

[Ap]

axis

SVM1-80

α6/3000

SVM2-40/80

α12/3000

SVM2-80/80

L, M

α22/2000

α30/1200

18.7

αM6/3000

αM9/3000

αL6/3000

αL9/3000

α30/2000

α40/2000

27.9

αM22/3000

αM30/3000

α22/3000

SVM1-130

α30/3000

130

α40/2000

(with FAN)

52.2

αL25/3000

αL50/2000

αM40/3000

(Note 3)

α65/2000

SVM1-240

αM40/3000

98.0

240

(Note 3)

SVM1-240

α300/1200

98.0

240

(2 units used)

α400/1200

α100/2000

α150/2000

SVM1-360

115.0

360

αM40/3000

(Note 3)

NOTE

1 The current limit (peak value) is a standard value. It varies

by about ±10%, depending on the circuit constants.

2 The SVM1-130 requires forced air cooling when driving the

α22/3000, α30/3000, α40/2000 (with a fan), αL25/3000, or

αL50/2000 or αM40/3000. In this case, the rated output

current is 52.2Arms. See 2.2.3 (7) and section 7.

αM40/3000 can be driven by several servo amplifier

models. For selection, refer to ”FANUC AC Servo Motor α

Series” (B-65142E).

4. SPECIFICATIONS

B-65162E/03

4.1.3

Spindle Amplifier

Module

Table.4.1.3 (a) Spindle amplifier module

Model

SPM-11

SPM-45

SPM-2.2

SPM-5.5

SPM-15

SPM-22

SPM-26

SPM-30

Item

(Note)

Rated output

13A

27A

48A

63A

95A

111A

133A

198A

Main circuit control method

Sine-wave PWM control with transistor (IGBT) bridge

Feedback method

Velocity feedback with pulse generator

Speed control range

Speed ratio 1:100

Speed variation rate

0.1% or less of maximum speed (load variation: 10% to 100%)

α15

α6

α12

α22

Applicable motors

α0.5

α1.5 to

α18

α30

α8

αP15

αP40

αP60

(typical examples)

α1

α3

αP22

α40

αP12

αP18

αP50

αP30

NOTE

The SPM-11 or SPM-45 requires forced air cooling (See 2.2.3 (7) and sec. 7.1).

Table.4.1.3 (b) αC Series Spindle Amplifier Modules (SPMC)

Model

SPMC-11

SPMC-2.2

SPMC-5.5

SPMC-15

SPMC-22

SPMC-26

Item

(Note)

Rated output

13A

27A

48A

63A

95A

111A

Main circuit control method

Sine-wave PWM control with transistor (IGBT) bridge

Speed control range

Speed ratio 1:50

Speed variation rate

1% or less of maximum speed (load variation: 10% to 100%)

αC1.5

Applicable motors

αC6

αC15

αC1

αC2

αC12

αC22

(typical examples)

αC8

αC18

αC3

NOTE

When SPMC-11 is used, forced air cooling from the outside is required. See Chapter 7.

B-65162E/03

4. SPECIFICATIONS

4.2

400-V INPUT SERIES

4.2.1

Power Supply Module

Table.4.2.1 (a) Power Supply Module (PSM-HV)

Model

PSM-75HV

PSM-18HV

PSM-30HV

PSM-45HV

Item

(Note1)

Main circuit

AC400V/460V +10%, -15%, 3φ 50/60Hz,"1Hz

Power supply

(Note 2)

Control power

AC200V/220V/230V +10%, -15%, 1φ 50/60Hz,"1Hz

Main circuit

26kVA

44kVA

64kVA

107kVA

Power equipment

capacity

Control power

0.7kVA

Rated output capacity

18kW

30kW

45kW

75kW

Maximum output capacity

35kW

60kW

85kW

120kW

Control method

Regenerative control (power supply regeneration)

NOTE

When the PSM-75HV is being used, forced air cooling from the outside is required. See (7)

in Section 2.2.3 and Chapter 7.

If the power supply voltage is beyond the indicated range, a power transformer is required.

The PSM-HV models always require a capacitor module (PSMC-HV) listed below.

Table.4.2.1 (b) Capacitor Modules (PSMC-HV)

Model

PSMC-18HV

PSMC-30HV

PSMC-45HV

Item

Rated voltage

AC566V/650V +10%,-15%

PSM-45HV

Applicable PSM

PSM-18HV

PSM-30HV

PSM-75HV

4. SPECIFICATIONS

B-65162E/03

Table.4.2.1 (c) Power Supply Module (PSMV-HV)

Model

PSMV-11HV (Note 2)

Item

Main circuit

AC400V/460V +10%,-15%, 3φ 50/60Hz, "1Hz

Power supply

(Note 1)

Control power

AC200V/220V/230V +10%, -15%, 1φ 50/60Hz, "1Hz

Main circuit

31kVA

Power equipment

capacity

Control power

0.7kVA

Rated output capacity

11kW

Maximum output capacity

20kW

Control method

Regenerative control (power supply regeneration)

NOTE

If the power supply voltage is beyond the indicated range, a power transformer is required.

PSMV-HV always requires an AC reactor unit.

[How to calculate the power equipment capacity]

Calculate the power equipment capacity using the formula below.

Rated capacity calculated in Section 3.5 or 3.6 (kW)

Power supply

capacity (kVA)

Rated capacity of power supply module (kW)

Power supply capacity of power supply

× module having rated output (kVA)

(See Table 4.2.1 (a), (c))

NOTE

Select a power supply for which, when the motor is

accelerated, the input voltage variation does not exceed 7%

(see Subsection 5.2.1 for details).

[How to calculate the input current of the PSM (PSMR) - HV]

Calculate the input current of a PSM(PSMV)HV from the expression

below. Based on the obtained input current value, select the equipment

to be installed in the PSM input section, such as circuit breaker 1, MCC,

and power cable. (Margin for selection: 1 to 1.5 times)

Power equipment capacity (kVA)

PSM input

× 1.2 (margin)

current (Arms)

Ǹ3 Nominal supply voltage (Vrms)

NOTE

Normally, assume the nominal supply voltage (Vrms) to be

400Vrms.

B-65162E/03

4. SPECIFICATIONS

4.2.2

Servo Amplifier Module

Table.4.2.2 (a) Specifications (common)

(SVM-HV)

Item

Specifications

Sine-wave PWM control with transistor (IGBT)

Main circuit control method

bridge

Table.4.2.2 (b) Specifications (individual)

Servo amplifier module

Rated

Applicable

Nominal

output

motor

current

Connection

current

Model name

model

limit [Ap]

axis

[Arms]

SVM1-20HV

α3/3000HV

3.6

SVM2-20/20HV

L-and M-axes

α6/3000HV

SVM2-20/40HV

L-axes

SVM2-20/60HV

L-axes

SVM1-40HV

α12/3000HV

12.6

SVM2-20/40HV

M-axes

αM6/3000HV

SVM2-40/40HV

L-and M-axes

αM9/3000HV

SVM2-40/60HV

L-axes

SVM1-60HV

α22/3000HV

16.3

SVM2-20/60HV

M-axes

α30/3000HV

SVM2-40/60HV

M-axes

αM22/3000HV

SVM2-60/60HV

L-and M-axes

αM30/3000HV

NOTE

The current limit (peak value) is the standard setting. The

operating value variation due to, for example, a circuit

constant is approximately"10%.

4. SPECIFICATIONS

B-65162E/03

4.2.3

Spindle Amplifier

Module

Table.4.2.3 Spindle amplifier module

Model

SPM-11HV

SPM-75HV

SPM-15HV

SPM-26HV

SPM-45HV

Item

(Note)

Rated output

23A

32A

55A

100A

170A

Main circuit control method

Sine-wave PWM control with transistor (IGBT) bridge

Feedback method

Velocity feedback with pulse generator

Speed control range

Speed ratio 1:100

Speed variation rate

0.1% or less of maximum speed (load variation: 10% to 100%)

α15HV

α6HV

α30HV

Applicable motors

α12HV

α18HV

α60HV

α8HV

α40HV

α22HV

NOTE

When SPM-11HV or SPM-75HV is used, forced air cooling from the outside is required. See

(7) in Section 2.2.3 and Chapter 7.

100

B-65162E/03

4. SPECIFICATIONS

4.3

WEIGHT

4.3.1

Power Supply Modules

Table.4.3.1 (a) Power Supply Modules

Model

Weight

PSM-5.5

6.3kg

PSM-11

5.4kg

PSM-15,26,30,37

10.7kg

PSM-45

22.0kg

PSMR-3

2.6kg

PSMR-5.5

4.3kg

PSM-18HV,30HV,45HV

11.0kg

PSM-75HV

22.0kg

PSMV-11HV

10.5kg

Table.4.3.1 (b) Capacitor Modules

Model

Weight

PSMC-18HV,30HV

4.0kg

PSMC-45HV

6.5kg

Table.4.3.1 (c) AC Reactors and AC Line Filters

Model

Weight

A81L-0001-0122 (For PSM-5.5, 11)

4.5kg

A81L-0001-0123 (For PSM-15)

6.5kg

A81L-0001-0120 (For PSM-26)

9.5kg

A81L-0001-0124 (For PSM-30)

9.2kg

A81L-0001-0147 (For PSM-37)

16.5kg

A81L-0001-0133 (For PSM-45, 75HV)

38.0kg

A81L-0001-0127 (For PSM-18HV, 30HV, 45HV)

15.0kg

A81L-0001-0083#3C (For PSMR-3)

1.1kg

A81L-0001-0101#C (For PSMR-5.5)

3.0kg

Table.4.3.1 (d) AC Reactor Unit

Model

Weight

A06B-6098-H001 (For PSMV-11HV)

17.0kg

101

4. SPECIFICATIONS

B-65162E/03

4.3.2

Servo Amplifier

Table.4.3.2 Servo Amplifier Modules

Modules

Model

Weight

SVM1-12,20

2.2Kg

SVM1-40S,40L,80

4.8Kg

SVM1-130

6.5Kg

SVM1-240,360

10.7Kg

Dynamic brake module (DBM) for SVM1-240, 360

5.4Kg

SVM2-12/12,12/20,20/20

2.8Kg

SVM2-12/40,20/40,40/40

5.5Kg

SVM2-40/80,80/80,40L/40L

7.0Kg

SVM3-12/12/12,12/12/20,12/20/20,20/20/20

4.1Kg

SVM3-12/12/40,12/20/40,20/20/40

6.5Kg

SVM1-20HV,40HV,60HV

6.0Kg

SVM2-20/20HV,20/40HV

7.5Kg

SVM2-20/60HV,40/40HV,40/60HV,60/60HV

4.3.3

Spindle Amplifier

Table.4.3.3 Spindle Amplifier Modules

Modules

Model

Weight

SPM-2.2 (TYPE1, 2, 4), SPMC-2.2

4.9Kg

SPM-5.5 (TYPE1, 2, 4), SPMC-5.5, 11

6.1Kg

SPM-11 (TYPE1, 2, 4)

5.4Kg

SPM-15, 26, 30 (TYPE1, 2, 3, 4), SPM-11 (TYPE3)

10.7Kg

SPMC-15, 22, 26

SPM-45 (TYPE1, 2, 3, 4)

22Kg

SPM-11HV (TYPE1, 2, 4)

4.6Kg

SPM-15HV, 26HV, 45HV (TYPE1, 2, 4)

11Kg

SPM-75HV (TYPE1, 2, 3, 4)

22Kg

102

5. INSTALLATION

B-65162E/03

The servo amplifier α series must be installed in a sealed type cabinet to

5.1

satisfy the following environmental requirements:

ENVIRONMENTAL

CONDITIONS

(1)

Ambient Temperature

Ambient temperature of the unit : 0 to 55_C (at operation)

-20 to 60_C

(at keeping and transportation)

Ambient temperature of the storage cabinet :

0 to 45_C

(2)

Humidity

Normally 90% RH or below, and condensation-free

(3)

Vibration

In operation : Below 0.5G

(4)

Atmosphere

No corrosive or conductive mists or drops should deposit directly on

the electronic circuits. (Note)

(5)

Notes on Installation

The αseries servo amplifier is designed to be installed in the power

magnetics cabinet, with its heat sink projecting through the back of

the cabinet. This carries away the heat generated by the semi-

conductors, thus preventing heat from building up in the cabinet as

much as possible. Therefore, note the following when installing the

amplifier.

(a) The heat sink must not be subjected to cutting fluid, oil mist, or

cutting chips. Otherwise, the cooling efficiency will be reduced

so that the characteristics of the amplifier cannot be guaranteed.

This may also shorten the life of the semiconductors.

When installing the amplifier in a power magnetics cabinet which

is designed to draw in air, fit an air filter to the air inlet. In

addition, completely seal all cable holes and doors.

NOTE

Install the electronic circuits in an environment of

contamination level 2 as defined in IEC 60664-1. To

achieve contamination level 2 in a severe environment

where machine tools are used, electronic circuits generally

need to be installed in a cabinet complying with IP54.

(b) No dust or cutting fluid must be able to enter through the exhaust

port. The flow of cooling air must not be obstructed.

removed, and remounted for maintenance.

(d) Current lines and signal lines must be separated and noise must

be suppressed. See the section 5.3 and the connection manual for

each CNC for details.

104

B-65162E/03

5. INSTALLATION

(e) The length of the DC link cable must not exceed 1.5 m (see the

figure below).

ÃÃ

Twist

PSM

SPM

SVM

ÃÃ

1.5 m

MAX.

ÃÃ

SVM

(f) Each amplifier must be installed vertically.

(g) When a PSM-HV is used, the following module layout

restrictions are imposed:

D When PSM-18HV, PSM-30HV, or PSM-45HV is used

ÃÃ

PSM

PSMC

SPM

SVM

Install modules in the order of the PSM, PSMC, SPM, then SVM.

Do not install the modules for apart from each other; install them

side-by-side.

D When the PSM-75HV is used

ÃÃ

PSM

SPM

PSMC

SVM

Install modules in the order of the PSM, SPM, PSMC, then SVM.

Do not install the modules far apart from each other; install them

in series.

105

5. INSTALLATION

B-65162E/03

5.2

INPUT POWER

AND

GROUNDING

5.2.1

Input Power

(1)

200-V power supply

S Nominal voltage rating

200/220/230 VAC

S Allowable voltage deviation

-15% to +10% (including Voltage

deviation due to load)

S Power frequency

50/60 Hz

S Allowable frequency deviation

+1 Hz

S Power supply unbalance

: "5% of the rated voltage or less

S Power supply inpedance

: Voltage deviation due to load

(at maximum output) shall be 5% or

less.

[Method to check power impedance]

R L+

L+

ÃÃÃ

S L-

L- V

power supply

Motor

ÃÃÃ

Power supply

Spindle amplifier

module

module or servo

voltmeter

amplifier module

E₀-E₁

100(%)<7(%)

where,

E₀

E₀ : Voltage at motor stop

E₁ : Voltage during motor acceleration or voltage immediately before the

start of speed reduction with the application of load

Turn on the control power supply (CX1A power supply input) of the

power supply module (PSM or PSMR) at the same time or earlier than

the CNC.

It is recommended that a capacitor unit for power-factor improvement

not be installed. This is because the capacitor unit for power-factor

improvement may adversely affect power regeneration.

The rated output of the motor is guaranteed for the rated input voltage.

If the input voltage changes, the rated output may not appear even

when the input voltage change is within the allowable range.

When the power supply is used in an area where the input voltage is

not within the range of 200 to 230 VAC, a power transformer is

required. When a power transformer is to be provided by the user, the

power must satisfy the specifications listed below. For transformers

manufactured by FANUC, see (6) in Section 2.2.3.

106

B-65162E/03

5. INSTALLATION

Table.5.2.1 Transformer Specifications

PSM-5.5

PSM-11

PSMR-3

PSMR-5.5

PSM-37

(2 kW

(3 kW

PSM-15

PSM-26

PSM-30

(5.5 kW

(7.5 kW

PSM-45

output)

Rated capacity kVA

3.5

Secondary current A

105

130

185

Secondary output voltage

200V

Secondary voltage regulation

Secondary voltage deviation

"3%

107

5. INSTALLATION

B-65162E/03

(2)

400-V power supply

S Nominal rated voltage

400/460 VAC

Neutral grounding is required.

Main circuit input power supply

400/460 VAC

Y-connection (neutral grounding)

S Allowable voltage change width

-15% to +10%

(including voltage change

due to the load)

S Power supply frequency

50/60 Hz

S Allowable change width

: "1 Hz

S Power supply unbalance

: "5% of the rated voltage or less

S Power supply impedance

: Voltage change due to the load

(at maximum output) is 7%

or less.

[Method to check power impedance]

R Ã

L+

ÃÃ

S L- Ã

L-

power supply

ÃÃ

Motor

ÃÃÃ

Power supply

Spindle amplifier

module

module or servo

voltmeter

amplifier module

E₀-E₁

100(%)<7(%)

where,

E₀

E₀ : Voltage at motor stop

E₁ : Voltage during motor acceleration or voltage immediately before the

start of speed reduction with the application of load

Turn on the control power supply (CX1A power supply input) of a

power supply module (PSM-HV or PSMV-HV) at the same time or

earlier than the CNC.

The motor rated output is guaranteed for the rated input voltage. If the

input voltage changes, the rated output may not appear even when the

input voltage change is within the allowable range.

It is recommended that a capacitor unit for power-factor improvement

not be installed. This is because the capacitor unit for power-factor

improvement may adversely affect power regeneration.

108

B-65162E/03

5. INSTALLATION

5.2.2

The servo amplifier α series drives the motor by using the transistor

PWM inverter method. This causes a high-frequency leakage current to

Leakage Current

flow via the ground drift capacitance in the motor winding, power cable,

and amplifier. This may cause a device installed on the power supply side,

such as a ground fault interrupter or leakage-protection relay, to

malfunction.

When a circuit breaker with a ground fault interrupter is used, it must be

selected so that the sum of the values calculated according to (a) and (b)

described below is not greater than the non-operating current value.

(a) Selection criterion per amplifier

Model : SVM and SPM (both except the HV series)

(NOTE 1), SPMC

Criterion for selection :

2 mA per amplifier (NOTE 2)

(b) Selection criterion per motor

Criterion for selection :

1 mA per motor (NOTE 2)

The following example shows how to use selection criteria (a) and (b):

Example : When the system consists of SMV1

SVM3

1 (three motors), and SPM

2 mA

3 (for the amplifiers) + 1 mA

5 (for the motors)

= 11 mA

→ Select a circuit breaker (NOTE 3) with a non-operating

current of

11 mA or higher.

(A general ground fault

interrupter that can be used for the above example is the one

with a rated sensitivity current of 30 mA and a non-operating

current of 15 mA.)

NOTE

In the 400-V input series, the power supply is grounded by

neutral grounding, so there is no leakage current that would

cause a circuit breaker with a ground fault interrupter,

connected on the power supply side, to malfunction.

These criteria are for selecting a circuit breaker with a

ground fault interrupter; they do not indicate accurate

leakage currents.

A circuit breaker may malfunction depending on the

frequency characteristic of the ground fault interrupter.

Therefore, use a ground fault interrupter supporting the use

of inverters.

The above criteria are values in the commercial frequency

band. Some measuring instruments for measuring leakage

current may sense a high frequency band, thus showing a

larger value.

109

5. INSTALLATION

B-65162E/03

5.2.3

The following ground systems are provided for the CNC machine tool:

D Signal ground system (SG)

Ground

The signal ground (SG) supplies the reference voltage (0 V) of the

electrical signal system.

D Frame ground system (FG)

The frame ground system (FG) is used for safety, and suppressing

external and internal noises. In the frame ground system, the frames,

cases of the units, panels, and shields for the interface cables between

the units are connected.

D System ground system

The system ground system is used to connect the frame ground

systems connected between devices or units with the ground.

Signal ground system

Frame ground sysytem

Power

Servo

CNC

System ground system

magnet-

amplifier

control

ics

unit

Operator’s

unit

panel

Machine

tool

Power

magnetics

cabinet

Distribution board

[Notes on connecting the ground systems]

D Connect the signal ground with the frame ground (FG) at only one

place in the power supply module.

D The grounding resistance of the system ground shall be 100 ohms or

less (class 3 grounding).

D The system ground cable must have enough cross-sectional area to

safely carry the accidental current flow into the system ground when

an accident such as a short circuit occurs.

(Generally, it must have the cross-sectional area of the AC power cable

or more.)

D Use the cable containing the AC power wire and the system ground

wire so that power is supplied with the ground wire connected.

(1) Grounding of each module

(a) Power supply module

Connect the ground terminal of connector CX1A to the frame

ground. This acts as the signal ground. Connect the ground

terminal of the metal frame to the frame ground.

110

B-65162E/03

5. INSTALLATION

(b) Servo amplifier module and spindle amplifier module

Connect the ground cable of the motor power cable to a ground

terminal of the terminal block of the module. Connect the other

ground terminal of the terminal block to the frame ground.

Connect the ground terminal of the metal frame to the frame

ground.

Connect the ground terminal of the metal frame to the frame

ground.

NOTE

Securing the ground terminal and a cable together is not

permitted.

When using an SVM-HV, always attach the motor flange to

the cabinet (machine) connected to the system ground. In

cases where it is difficult to attach the motor flange to the

cabinet

(machine) connected to the system ground,

connect the motor flange and frame ground (the ground

plate of the cabinet) with a 1.25-mm² or larger cable which

should be separated from the power cable as far as

possible.

(The dotted line in the figure below)

Dynamic brake

Regenerative

module (DBM) discharge unit

Signal ground

Not used

3φ input power supply

Metal

frame

Frame ground

(ground plate of the cabinet)

(Note 2)

Spindle

Servo

motor

System ground

111

5. INSTALLATION

B-65162E/03

(2) Grounding the power supply module

Detailed examples of grounding the power supply module are given

on the following pages. The cable thickness specifications are as

follows:

(a) Cable between connector CX1A and the frame ground of the

cabinet:

1.25 mm²

(b) Cable between the metal frame of the module and the frame

ground of the cabinet: As indicated in the table below.

Table.5.2.3 (a) Diameter of PSM ground cable (between the metal

frame of the module and the frame ground)

Cross-sectional area of

Cross-sectional area of ground cable

power line

Sx5.5

5.5 or more

5.5<Sx16

S or more

16<Sx35

16 or more

S>35

S/2 or more

servo amplifier and spindle amplifier modules to the cabinet

frame ground.

Determine the cross-sectional area of the cables according to

Table 5.2.3 (b).

Table.5.2.3 (b) Cross-Sectional Areas of SPM and SVM Ground

Cables

Cross-sectional area of power

Cross-sectional area of ground cable

cable S (mm²)

(mm²)

Sx5.5

5.5 or more

5.5<Sx16

S or more

16<Sx35

16 or more

S>35

S/2 or more

(d) Cable connecting the metal frame of the dynamic brake module

(DBM) to the frame ground of the cabinet

Determine the cross-sectional area according to Table 5.2.3 (b).

The cross-sectional area of the power cable in the table matches

the cross-sectional area of the power cable used in the unit to

which the DBM is connected.

NOTE

The following M5 crimp terminal can be used for thick

cables:

CB22-5S manufactured by NICHIFU Co., Ltd.

Applicable cable thickness:

16.78 to 22.66 mm²

112

B-65162E/03

5. INSTALLATION

Ground Cable Connection (SVM1-12, 20, 40S, 40L, 80)

Supplied ground Ã

barÃÃÃÃÃ

ÃM4 screw

ÃÃÃÃ

ÃÃÃÃÃ

ÃÃÃÃÃÃ

om motor

M4 screw (with fin)

power cable

M5 screw (with no fin)

(Note 1)

Note 2)

Frame ground (FG)

rame ground (FG)

cabinet ground plate

System ground

ÃÃÃÃÃ

Fig.5.2.3 (e) Ground Cable Connection (SVM1-12, 20, 40S, 40L, 80)

NOTE

A motor has one or two ground cables.

Type with no external fin: SVM1-12, 20

Type with external fin: SVM1-40S, 40L, 80

117

5. INSTALLATION

B-65162E/03

Ground Cable Connection (SVM2-12/12, 12/20, 20/20, 12/40, 20/40, 40/40)

Supplied ground

bar

M4 screw

screw (with no fin)

From L-axis motor

power cable

M5 screw (with ins)

(Note 1)

(Note 2)

From M-axis motor

power cable

(Note 1)

ÃÃÃÃÃÃÃÃÃÃ

Frame ground (FG) = cabinet

ground plate

ystem ground

ÃÃÃÃÃÃ

Fig.5.2.3 (h) Servo amplifier module (SVM2-12/12, 12/20, 20/20, 12/40, 20/40, 40/40)

NOTE

A motor has one or two ground cables.

Type with no external fin: SVM2-12/12, 12/20, 20/20

Type with external fin: SVM2-12/40, 20/40, 40/40

120

B-65162E/03

5. INSTALLATION

Ground Cable Connection (SVM2-40/80, 80/80, 40L/40L, 20/20HV, 20/40HV,

20/60HV, 40/40HV, 40/60HV, 60/60HV)

4 screw

M5 screw

ÃÃÃ

From motor power cable

Frame ground (FG) = cabinet

ground plate

System ground

Fig.5.2.3 (i) Ground Cable Connection (SVM2-40/80, 80/80, 40L/40L, 20/20HV, 20/40HV, 20/60HV,

40/40HV, 40/60HV, 60/60HV)

121

5. INSTALLATION

B-65162E/03

Ground Cable Connection (SVM3)

Ãground barÃ

M4 screw

ÃÃÃ

ÃÃÃÃÃ

rom L-axis motor

power cable (Note 1)

M5 screw

rom M-axis motor

power cable (Note 2)

From N-axis motor

power cable (Note 1)

ÃÃÃÃÃÃÃÃÃ

rame ground (FG) = cabinet

Frame ground (FG) = cabinet

round plate

Ãground plateÃÃÃÃS

ystem groundÃ

ÃÃÃÃÃÃÃÃÃÃÃÃÃ

Fig.5.2.3 (j) Ground Cable Connection (SVM3)

NOTE

A motor has one or two ground wires.

The heatsink of SVM3-12/12/12, 12/12/20, 12/20/20, and

20/20/20 is not exposed externally.

122

FANUC SERVO AMPLIFIER a series. DESCRIPTIONS (B-65162E/03) - page 4