Wiring Main Circuit Terminals. Omron L7

Wiring Main Circuit Terminals

‹

Applicable Wire Sizes and Crimp Terminals

Select the appropriate wires and crimp terminals using

Table 2.1

to

Table 2.3

. Refer to instruction manual

TOE-C726-2 for wire sizes for Braking Resistor Units and Braking Units.

„

Wire Sizes

Inverter

Model

CIMR†

L7Z23P7

Table 2.1 200 V Class Wire Sizes

Terminal Symbol

Terminal

Screws

Tightening

Torque

(N•m)

Possible

Wire Sizes mm

2

(AWG)

Recommended

Wire Size

*1 mm

2

(AWG)

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, PO, NO

M4 1.2 to 1.5

4

(12 to 10)

4

(12)

Wire Type

L7Z25P5

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, PO, NO

M4 1.2 to 1.5

6

(10)

L7Z27P5

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, PO, NO

M5 2.5

10

(8 to 6)

L7Z2011

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, PO, NO

M5

L7Z2015

R/L1, S/L2, T/L3, , 1, 2, U/T1, V/T2,

W/T3, NO

B1, B2, PO

M6

M5

M6

L7Z2018

R/L1, S/L2, T/L3, , 1, 2, U/T1, V/T2,

W/T3, NO

B1, B2, PO

M8

M5

M6

L7Z2022

R/L1, S/L2, T/L3, , 1, U/T1, V/T2,

W/T3, R1/L11, S1/L21, T1/L31, NO

3, PO

M8

M6

M8

L7Z2030

R/L1, S/L2, T/L3, , 1 U/T1,

V/T2, W/T3, R1/L11, S1/L21, T1/L31, NO

3, PO

M8

M6

M8

2.5

4.0 to 5.0

2.5

4.0 to 5.0

9.0 to 10.0

2.5

4.0 to 5.0

9.0 to 10.0

4.0 to 5.0

9.0 to 10.0

9.0 to 10.0

4.0 to 5.0

9.0 to 10.0

16

(6 to 4)

25 to 35

(3 to 1)

10 to 16

(8 to 4)

25 to 35

(4 to 2)

50

(1 to 1/0)

10 to 16

(8 to 4)

25 to 35

(4 to 2)

25

(4 to 2)

10

(8 to 6)

25

(4)

25 to 35

(3 to 2)

10 to 16

(8 to 6)

25

(4)

6

(10)

10

(8)

16

(6)

-

25

(4)

25

(3)

-

25

(4)

50

(1)

25

(4)

-

25

(4)

25

(3)

-

25

(4)

Power cables, e.g., 600 V vinyl power cables

2

2-

5

2

Inverter

Model

CIMR†

L7Z2037

L7Z2045

L7Z2055

R/L1, S/L2, T/L3, , 1 U/T1,

V/T2, W/T3, R1/L11, S1/L21, T1/L31, NO

3, PO r/l1,

Δ/l2

R/L1, S/L2, T/L3, , 1 U/T1,

V/T2, W/T3, R1/L11, S1/L21, T1/L31, NO

3, PO r/l1,

Δ/l2

Terminal Symbol

R/L1, S/L2, T/L3, , 1, NO

U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31

3, PO r/l1, Δ/l2

Terminal

Screws

Tightening

Torque

(N•m)

M10

M8

M10

M4

M10

M8

M10

M4

M12

M10

M8

M10

M4

17.6 to 22.5

8.8 to 10.8

17.6 to 22.5

1.3 to 1.4

17.6 to 22.5

8.8 to 10.8

17.6 to 22.5

1.3 to 1.4

31.4 to 39.2

17.6 to 22.5

8.8 to 10.8

17.6 to 22.5

1.3 to 1.4

Possible

Wire Sizes mm

2

(AWG)

70 to 95

(2/0 to 4/0)

Recommended

Wire Size

*1 mm

2

(AWG)

70

(2/0)

6 to 16

(10 to 4)

35 to 70

(2 to 2/0)

0.5 to 4

(20 to 10)

95

(3/0 to 4/0)

6 to 16

(10 to 4)

50 to 70

(1 to 2/0)

0.5 to 4

(20 to 10)

50 to 95

(1/0 to 4/0)

90

(4/0)

6 to 70

(10 to 2/0)

35 to 95

(3 to 4/0)

0.5 to 4

(20 to 10)

–

35

(2)

1.5

(16)

95

(3/0)

Wire Type

–

50

(1)

1.5

(16)

50 × 2P

(1/0

× 2P)

90

(4/0)

Power cables, e.g., 600 V vinyl power cables

–

50

(1/0)

1.5

(16)

*1. The wire size is valid for PVC insulated copper cable, 30° ambient temperature

Inverter

Model

CIMR†

L7Z43P7

L7Z44P0

L7Z45P5

L7Z47P5

L7Z4011

Table 2.2 400 V Class Wire Sizes

Terminal Symbol

Terminal

Screws

Tightening

Torque

(N•m)

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, NO, PO

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, NO, PO

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, NO, PO

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, NO, PO

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, NO, PO

M4

M4

M4

M4

M5

1.2 to 1.5

1.2 to 1.5

1.2 to 1.5

1.2 to 1.5

2.5

Possible

Wire Sizes mm

2

(AWG)

Recommended

Wire Size

*1 mm

2

(AWG)

2.5 to 4

(14 to 10)

4

(12)

2.5

(14)

2.5 to 4

(14 to 10)

4

(12)

2.5

(14)

4

(12 to 10)

2.5 to 4

(14 to 10)

6 to 10

(10 to 6)

6 to 10

(10 to 6)

4

(12)

2.5

(14)

6

(10)

4

(12)

10

(8)

6

(10)

Wire Type

Power cables, e.g., 600 V vinyl power cables

2-

6

Inverter

Model

CIMR†

L7Z4015

L7Z4018

L7Z4022

L7Z4030

L7Z4037

L7Z4045

L7Z4055

R/L1, S/L2, T/L3, , 1, 2, B1, B2,

U/T1, V/T2, W/T3, NO, PO

R/L1, S/L2, T/L3, , 1, 2, U/T1, V/T2,

W/T3, NO

B1, B2, PO

R/L1, S/L2, T/L3, , 1, 3, U/T1, V/T2,

W/T3, R1/L11, S1/L21, T1/L31, NO, PO

R/L1, S/L2, T/L3, , 1, 3, U/T1, V/T2,

W/T3, R1/L11, S1/L21, T1/L31, NO, PO

R/L1, S/L2, T/L3, , 1, U/T1, V/T2, W/T3,

R1/L11, S1/L21, T1/L31, NO

3, PO

R/L1, S/L2, T/L3, , 1, U/T1, V/T2, W/T3,

R1/L11, S1/L21, T1/L31, NO

3, PO

R/L1, S/L2, T/L3, , 1, U/T1, V/T2,

W/T3, R1/L11, S1/L21, T1/L31, NO

3, PO

Terminal Symbol

Terminal

Screws

M5

M5

(M6)

M6

M5

M6

M6

M8

M6

M8

M8

M6

M8

M8

M6

M8

M8

M6

M8

*1. The wire size is valid for PVC insulated copper cable, 30° ambient temperature

Tightening

Torque

(N•m)

2.5

2.5

(4.0 to 5.0)

4.0 to 5.0

2.5

4.0 to 5.0

4.0 to 5.0

9.0 to 10.0

4.0 to 5.0

9.0 to 10.0

9.0 to 10.0

4.0 to 5.0

9.0 to 10.0

9.0 to 10.0

4.0 to 5.0

9.0 to 10.0

9.0 to 10.0

4.0 to 5.0

9.0 to 10.0

10 to 16

(8 to 4)

25 to 35

(4 to 2)

35 to 50

(2 to 1/0)

10 to 16

(8 to 4)

25 to 35

(4 to 2)

50

(1 to 1/0)

10 to 16

(8 to 4)

25 to 35

(4 to 2)

Possible

Wire Sizes mm

2

(AWG)

Recommended

Wire Size

*1 mm

2

(AWG)

10

(8 to 6)

10

(8)

6 to 10

(10 to 6)

10 to 35

(8 to 2)

10

(8)

10 to 25

(8 to 4)

16

(6 to 4)

16 to 35

(6 to 2)

25

(4)

25 to 35

(4 to 2)

25 to 50

(4 to 1/0)

25

(4)

25

(4)

35

(2)

16

(6)

16

(6)

6

(10)

10

(8)

10

(8)

10

(8)

Wire Type

Power cables, e.g., 600 V vinyl power cables

-

25

(4)

50

(1)

25

(4)

35

(2)

-

-

25

(4)

2

2-

7

2

„

Recommended Crimp Terminal Sizes (Ring type)

Table 2.3 Crimp Terminal Sizes

Wire Cross Section (mm

2

)

Terminal Screws

0.5 - 1.0

1.5

2.5

4

6

10

16

25

35

50

70

95

M5

M10

M12

M8

M10

M12

M10

M12

M6

M8

M10

M8

M6

M8

M6

M8

M4

M5

M6

M8

M4

M4

M4

M4

M5

M6

M8

A

620/4

630/4

630/4

650/4

650/4

101 R/5

101 R/6

101 R/8

102 R/5

102 R/6

102 R/8

103 R/5

*1

103 R/6

103 R/8

104 R/6

104 R/8

105 R/6

105 R/8

105 R/10

106 R/8

106 R/10

106 R/12

107 R/8

107 R/10

107 R/12

108 R/10

108 R/12

Crimp Terminal Type

Klauke y

B

1620/4

1620/4

1630/4

1650/4

1650/4

1650/5

1650/6

1650/8

1652/5

1652/6

1652/8

1653/5

1656/10

1656/12

1657/8

1657/10

1657/12

1658/10

1658/12

1653/6

1653/8

1654/6

1654/8

1655/6

1655/8

1655/10

1656/8

*1. Not applicable for L7Z2011

Select the wire size for the main circuit so that line voltage drop is within 2% of the rated voltage.

Line voltage drop is calculated as follows:

JST

GS5-16

GS6-16

GS8-16

GS6-25

GS8-25

GS6-35

GS8-35

GS10-35

GS8-50

GS10-50

GS12-50

GS8-70

GS10-70

GS12-70

GS10-95

GS12-95

GS4-1

GS4-1

GS4-2.5

GS4-6

GS4-6

GS5-6

GS6-6

GS6-8

GS5-10

GS6-10

GS8-10

IMPORTANT

Line voltage drop (V) = 3 x wire resistance (

Ω

/km) x wire length (m) x current (A) x 10

-3

2-

8

‹

Main Circuit Terminal Functions

Main circuit terminal functions are summarized according to terminal symbols in

Table 2.4

. Wire the terminals correctly for the desired purposes.

Purpose

Main circuit power input

Inverter outputs

Table 2.4 Main Circuit Terminal Functions (200 V Class and 400 V Class)

Terminal Symbol

R/L1, S/L2, T/L3

R1/L11, S1/L21, T1/L31

U/T1, V/T2, W/T3

Model: CIMR-L7Z ††††

200 V Class 400 V Class

23P7 to 2055 43P7 to 4055

2022 to 2055

23P7 to 2055

4022 to 4055

43P7 to 4055

DC bus terminals

1,

Braking Resistor Unit connection B1, B2

DC reactor connection

1, 2

Braking Unit connection

3,

Ground

Control Power Supply PO, NO

23P7 to 2055

23P7 to 2018

23P7 to 2018

2022 to 2055

23P7 to 2055

23P7 to 2055

43P7 to 4055

43P7 to 4018

43P7 to 4018

4022 to 4055

43P7 to 4055

43P7 to 4055

2

2-

9

2

‹

Main Circuit Configurations

The main circuit configurations of the Inverter are shown in

Table 2.5

.

B2

B1

+ 1

+

2

R/L1

S/L2

T/L3

-

Table 2.5 Inverter Main Circuit Configurations

200 V Class 400 V Class

CIMR - L7Z23P7 to 2018

CIMR - L7Z43P7 to 4018

U/T1

V/T2

W/T3

B2

B1

+

1

+ 2

R/L1

S/L2

T/L3

-

Power

Supply

Control

Circuit

Power

Supply

Control

Circuit

N0 P0

N0 P0

CIMR - L7Z2022,2030

+ 3

CIMR - L7Z4022 to 4055

+ 3

+ 1

R/L1

S/L2

T/L3

R1/L11

S1/L21

T1/L31

-

U/T1

V/T2

W/T3

+ 1

R/L1

S/L2

T/L3

R1/L11

S1/L21

T1/L31

-

N0

Power

Supply

P0

Control

Circuit

CIMR - L7Z2037 to 2055

+ 3

N0

Power

Supply

P0

Control

Circuit

+ 1

R/L1

S/L2

T/L3

R1/L11

S1/L21

T1/L31

r/l1

Δ 200/

l200

U/T1

V/T2

W/T3

N0

Power

Supply

P0

Control

Circuit

Note: Consult your Omron-Yaskawa Motion Control representative for using 12-phase rectification.

U/T1

V/T2

W/T3

U/T1

V/T2

W/T3

2-

10

‹

Standard Connection Diagrams

Standard Inverter connection diagrams are shown in

Fig 2.4

. These are the same for both 200 V Class and

400 V Class Inverters. The connections depend on the Inverter capacity.

„

CIMR-L7Z23P7 to 2018 and 43P7 to 4018

3 Phase 200VAC or

400VAC

DC reactor

(optional)

Braking

Resistor

(optional)

+ 1 + 2

B1 B2

R/L1

S/L2

T/L3

U/T1

V/T2

W/T3

M

„

CIMR-L7Z2022, 2030, and 4022 to 4055

Braking

Resistor (optional)

CDBR Braking

Unit (optional)

3 Phase 200VAC or

400VAC

+ 1

R/L1

S/L2

T/L3

+ 3

R1/L11

S1/L21

T1/L31

-

U/T1

V/T2

W/T3

M

Be sure to remove the short-circuit bar before connecting the DC reactor.

„

CIMR-L7Z2037 to 2055

3 Phase 200VAC or

400VAC

+ 1

R/L1

S/L2

T/L3

+ 3

R1/L11

S1/L21

T1/L31 r / l1

/ l2

-

U/T1

V/T2

W/T3

Braking

Resistor (optional)

CDBR Braking

Unit (optional)

M

The DC reactor is built in.

2

Control power is supplied internally from the DC bus at all inverter models.

Fig 2.4 Main Circuit Terminal Connections

2-

11

2

‹

Wiring the Main Circuits

This section describes wiring connections for the main circuit inputs and outputs.

„

Wiring Main Circuit Inputs

Consider the following precautions for the main circuit power supply input.

Installing Fuses

To protect the inverter, it is recommended to use semiconductor fuses like they are shown in the table below.

Rated

Inverter Type Inverter Input

Current (A)

23P7

25P5

27P5

2011

2015

2018

2022

2030

2037

2045

2055

52

68

96

115

21

25

40

156

176

220

269

Voltage (V)

240

240

240

240

240

240

240

240

240

240

240

Table 2.6 Input Fuses

Fuse Selection

Current (A)

I

2 t (A

2 s)

80

100

130

150

30

40

60

180

240

300

350

82~220

220~610

290~1300

450~5000

1200~7200

1800~7200

870~16200

1500~23000

2100~19000

2700~55000

4000~55000

Selection Example (FERRAZ)

Model Rating I²t (A²s)

A60Q30-2

A50P50-4

A50P80-4

A50P80-4

A50P125-4

A50P150-4

A50P150-4

A50P200-4

A50P250-4

A50P300-4

A50P350-4

600V / 30A

500V / 50A

500V / 80A

500V / 80A

500V / 125A

500V / 150A

500V / 150A

500V / 200A

500V/ 250A

500V / 300A

500V / 350A

132

250

640

640

1600

2200

2200

4000

6200

9000

12000

43P7

44P0

45P5

47P5

4011

4015

4018

4022

4030

4037

4045

4055

10.2

13.2

17

22

32

41

49

58

78

96

115

154

480

480

480

480

480

480

480

480

480

480

480

480

30

50

60

70

15

20

25

80

100

125

150

200

34~72

50~570

100~570

100~640

150~1300

400~1800

700~4100

240~5800

500~5800

750~5800

920~13000

1500~13000

A60Q20-2

A60Q30-2

A60Q30-2

A60Q30-2

A70P50-4

A70P70-4

A70P80-4

A70P80-4

A70P100-4

A70P125-4

A70P150-4

A70P200-4

600V / 20A

600V / 30A

600V / 30A

600V / 30A

700V / 50A

700V / 70A

700V / 80A

700V / 80A

700V / 100A

700V / 125A

700V / 150A

700V / 200A

41

132

132

132

300

590

770

770

1200

1900

2700

4800

2-

12

Installing a Moulded-Case Circuit Breaker

If a moulded case circuit breaker is used for the power supply connection (R/L1, S/L2, and T/L3) it must be suitable for the Inverter.

•

•

The MCCB should have a capacity of 1.5 to 2 times of the inverter's rated current.

For the MCCB's time characteristics selection the inverter's overload protection (one minute at 150% of the rated output current) must be considered.

Installing an Earth Leakage Breaker

An earth leakage breaker which is able to detect all kinds of current should be used in order to ensure a safe earth leakage current detection.

•

•

If a special-purpose earth leakage breaker for Inverters is used, it should have an actuating current of at least 30 mA per Inverter.

If a standard earth leakage breaker is used, it should have an actuating current of 200 mA or more per

Inverter and a actuating time of 0.1 s or more.

Installing a Magnetic Contactor at the Input

If the power supply for the main circuit is shut off by a control circuit, a magnetic contactor can be used.

The following things should be considered:

•

•

The Inverter can be started and stopped by opening and closing the magnetic contactor on the primary side.

Frequently opening and closing the magnetic contactor may cause an Inverter fault. Do not exceed one power up per hour.

When the Inverter is operated using the Digital Operator, automatic operation cannot be performed after recovery from a power interruption.

Connecting Input Power Supply to the Terminal Block

The input power supply can be connected in any sequence to the terminals R, S or T on the terminal block; the input phase sequence is irrelevant to the output phase sequence.

Installing an Input AC Reactor

If the Inverter is connected to a large-capacity power transformer (600 kW or more) or a phase advancing capacitor is switched nearby, an excessive peak current could flow through the input power circuit, causing an inverter damage. As a countermeasure an optional AC Reactor the inverter input or a DC reactor at the DC reactor connection terminals can be installed.

In order to fulfill the EN12015 an AC reactor has to be installed. Refer to

Chapter 9, AC Reactors for EN

12015 Compatibility

for the available reactors. The AC reactor has to be installed between the power supply and the EMC filter (like shown in

Fig 2.5

)

Power

Supply

L1

L2

L3

AC

Reactor

Filter

L7Z

Inverter

M

Fig 2.5 AC reactor installation

Installing a Surge Absorber

Always use a surge absorber or diode for inductive loads near the Inverter. Inductive loads include magnetic contactors, electromagnetic relays, solenoid valves, solenoids, and magnetic brakes.

2

2-

13

2

„

Wiring the Output Side of the Main Circuit

The following precautions should be considered for the output circuit wiring.

Connecting the Inverter and Motor

The output terminals U/T1, V/T2 and W/T3 must be connected according to the motor lead wires U, V and W.

The motor should rotate forward with the forward run command. If not, two of the motor cable wires can be switched.

Never Connect a Power Supply to Output Terminals

A power supply must never be connected to the output terminals U/T1, V/T2, and W/T3. Otherwise the internal circuits of the Inverter will be damaged.

Never Short or Ground Output Terminals

If the output terminals are touched with bare hands or the output wires come into contact with the Inverter case, an electric shock or a short circuit may occur.

Do Not Use a Phase Advancing Capacitor

A phase advancing capacitor must never be connected to the inverter output circuit. The high-frequency components of the Inverter output may overheat and be damaged and may cause other parts to burn.

Using a Magnetic Contactor

A magnetic contactor (MC) between the Inverter and motor must not be turned ON or OFF during inverter operation. If the MC is turned ON during the Inverter is operation, a large inrush current will be created and the inverter’s over current protection may operate.

„

Ground Wiring

The following precautions should be considered for the ground connection.

•

•

Always use the ground terminal of the 200 V Inverter with a ground resistance of less than 100

Ω and that of the 400 V Inverter with a ground resistance of less than 10

Ω.

Ground wires should not be shared with other devices, such as welding machines or power tools.

•

•

A ground wire, that complies with technical standards on electrical equipment must be used. The length of the ground wire should be as low as possible.

Leakage current flows through the Inverter. Therefore, if the distance between the ground electrode and the ground terminal is too long, potential on the ground terminal of the Inverter will become unstable.

When more than one Inverter is used the ground wires should not be looped.

OK

NO

Fig 2.6 Ground Wiring

2-

14

„

Connecting a Braking Resistor and Braking Unit (CDBR)

A Braking Resistor and Braking Unit can be connected to the Inverter like shown in the

Fig 2.7

.

To prevent overheating of the braking unit/braking resistor, the inverter operation should be stopped when the overload contacts are operated.

200 V and 400 V Class Inverters with 3.7 to 18.5 kW Output Capacity

Braking Resistor

Inverter

Thermal overload relay contact

2

200 V and 400 V Class Inverters with 22 kW or higher Output Capacity

CDBR Braking Unit Braking Resistor

Inverter

Thermal overload relay contact

Thermal overload relay contact

Fig 2.7 Connecting the Braking Resistor and Braking Unit

2-

15

2

Connecting Braking Units in Parallel

When two or more Braking Units are connected in parallel the wiring and jumper settings must be done like

shown in

Fig 2.8

. There is a jumper for selecting whether each Braking Unit is to be a master or slave. “Mas-

ter” must be set for the first Braking Unit only, “Slave” must be set for all other Braking Units (i.e. from the second Unit onwards).

Thermal overload relay contact

Thermal overload relay contact

Thermal overload relay contact

Braking

Resistor

Braking

Resistor

Braking

Resistor

Inverter

Braking Unit #3

Braking Unit #2

2-

16

Braking Unit #1

Thermal overload relay contact

Thermal overload relay contact

Thermal overload relay contact

Fig 2.8 Connecting Braking Units in Parallel

„

Control Power Supply Connection

The controller of the Varispeed L7 can be supplied by an external voltage source during rescue operation using the twisted wires marked with P0 and N0. Upon shipment the wires are connected to the main circuit terminal

B1 (units up to 18.5 kW) or terminal +3 (units from 22 kW and above) and terminal -.

B2

B1 / + 3

L1

L2

L3

P0

N0

R/L1

S/L2

T/L3

-

Power Supply

Control circuit

Fig 2.9 Control Power Supply Connection

Please refer to

page 6-77, Rescue System

for details about rescue operation.

U/T1

V/T2

W/T3