Wiring Main Circuit Terminals. YASKAWA Varispeed f7
Pubblicità
Pubblicità
2
-6
Wiring Main Circuit Terminals
Applicable Wire Sizes and Closed-loop Connectors
Select the appropriate wires and crimp terminals from Table 2.1
to Table 2.3
. Refer to instruction manual
TOE-C726-2 for wire sizes for Braking Resistor Units and Braking Units.
Inverter
Model
CIMR
F7A20P4
Table 2.1 200 V Class Wire Sizes
Terminal Symbol
U/T1, V/T2, W/T3
Terminal
Screws
M4
Tightening
Torque
(N•m)
1.2 to 1.5
Possible
Wire Sizes mm
2
(AWG)
2 to 5.5
(14 to 10)
Recommended
Wire Size
2 mm
(AWG)
2
(14)
Wire Type
F7A20P7 U/T1, V/T2, W/T3 M4 1.2 to 1.5
2 to 5.5
(14 to 10)
2
(14)
F7A21P5 U/T1, V/T2, W/T3
F7A22P2 U/T1, V/T2, W/T3
F7A23P7 U/T1, V/T2, W/T3
F7A25P5 U/T1, V/T2, W/T3
F7A27P5 U/T1, V/T2, W/T3
M4
M4
M4
M4
M5
F7A2011 U/T1, V/T2, W/T3 M5
F7A2015
F7A2018
F7A2022
F7A2030
R/L1, S/L2, T/L3, , 1, 2, U/T1, V/T2,
W/T3
B1, B2
M6
M5
M6
R/L1, S/L2, T/L3, , 1, 2, U/T1, V/T2,
W/T3
B1, B2
M8
M5
M6
R/L1, S/L2, T/L3, , 1, U/T1, V/T2,
W/T3, R1/L11, S1/L21, T1/L31
3
M8
M6
M8
R/L1, S/L2, T/L3, , 1 U/T1,
V/T2, W/T3, R1/L11, S1/L21, T1/L31
3
M8
M6
M8
1.2 to 1.5
1.2 to 1.5
1.2 to 1.5
1.2 to 1.5
2.5
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
2 to 5.5
(14 to 10)
2 to 5.5
(14 to 10)
3.5 to 5.5
(12 to 10)
5.5
(10)
8 to 14
(8 to 6)
14 to 22
(6 to 4)
30 to 38
(4 to 2)
8 to 14
(8 to 6)
22
(4)
30 to 38
(3 to 2)
8 to 14
(8 to 6)
22
(4)
30 to 60
(3 to 1)
8 to 22
(8 to 4)
22 to 38
(4 to 2)
50 to 60
(1 to 1/0)
8 to 22
(8 to 4)
22 to 38
(4 to 2)
3.5
(12)
5.5
(10)
2
(14)
2
(14)
8
(8)
14
(6)
30
(4)
-
22
(4)
30
(3)
-
22
(4)
30
(3)
-
22
(4)
50
(1)
-
22
(4)
Power cables, e.g., 600 V vinyl power cables
Wiring Main Circuit Terminals
Inverter
Model
CIMR
F7A2037
F7A2045
F7A2055
F7A2075
F7A2090
F7A2110
3 r/ 1, / 2
Table 2.1 200 V Class Wire Sizes (Continued)
Terminal Symbol
R/L1, S/L2, T/L3, , 1 U/T1,
V/T2, W/T3, R1/L11, S1/L21, T1/L31
3 r/ 1, / 2
R/L1, S/L2, T/L3, , 1 U/T1,
V/T2, W/T3, R1/L11, S1/L21, T1/L31
3 r/ 1, / 2
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31
, 1
R/L1, S/L2, T/L3, U/T1, V/T2, W/T3, R1/L11,
S1/L21, T1/L31
3 r/ 1, / 2
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31
3 r/ 1, / 2
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31
3 r/ 1, / 2
Terminal
Screws
M10
M8
M10
M4
M10
M8
M10
M4
M10
M10
M8
M10
M4
M12
M10
M8
M12
M4
M12
M12
M8
M12
M4
M12
M12
M8
M12
M4
Tightening
Torque
(N•m)
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
17.6 to 22.5
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
31.4 to 39.2
1.3 to 1.4
31.4 to 39.2
31.4 to 39.2
8.8 to 10.8
31.4 to 39.2
1.3 to 1.4
31.4 to 39.2
31.4 to 39.2
8.8 to 10.8
31.4 to 39.2
1.3 to 1.4
Possible
Wire Sizes mm
2
(AWG)
60 to 100
(2/0 to 4/0)
5.5 to 22
(10 to 4)
30 to 60
(2 to 2/0)
0.5 to 5.5
(20 to 10)
80 to 100
(3/0 to 4/0)
80 to 125
(3/0 to 250)
80 to 100
(3/0 to 4/0)
5.5 to 60
(10 to 2/0)
100 to 200
(3/0 to 400)
0.5 to 5.5
(20 to 10)
150 to 200
(250 to 400)
100 to 150
(4/0 to 300)
5.5 to 60
(10 to 2/0)
60 to 150
(2/0 to 300)
0.5 to 5.5
(20 to 10)
5.5 to 22
(10 to 4)
38 to 60
(1 to 2/0)
0.5 to 5.5
(20 to 10)
50 to 100
(1/0 to 4/0)
100
(4/0)
5.5 to 60
(10 to 2/0)
30 to 60
(3 to 4/0)
0.5 to 5.5
(20 to 10)
200 to 325
(350 to 600)
150 to 325
(300 to 600)
5.5 to 60
(10 to 2/0)
150
(300)
0.5 to 5.5
(20 to 10)
Recommended
Wire Size mm
2
(AWG)
60
(2/0)
Wire Type
-
30
(2)
1.25
(16)
80
(3/0)
-
38
(1)
1.25
(16)
50 × 2P
(1/0 × 2P)
100
(4/0)
-
60 × 2P
(2/0 × 2P)
1.25
(16)
200 × 2P, or 50 × 4P
(350 × 2P, or 1/0 ×
2P)
150 × 2P, or 50 × 4P
(300 × 2P, or 1/0 ×
4P)
50
(1/0)
1.25
(16)
80 × 2P
(3/0 × 2P)
80 × 2P
(3/0 × 2P)
-
100
(3/0)
1.25
(16)
150 × 2P
(250 × 2P)
100 × 2P
(4/0 × 2P)
-
Power cables, e.g., 600 V vinyl power cables
-
150 × 2P
(300 × 2P)
1.25
(16)
* The wire thickness is set for copper wires at 75 ° C
2-
7
2
-8
Inverter
Model
CIMR
F7A40P4
Table 2.2 400 V Class Wire Sizes
Terminal Symbol
U/T1, V/T2, W/T3
Terminal
Screws
M4
Tightening
Torque
(N•m)
1.2 to 1.5
Possible
Wire Sizes mm
2
(AWG)
Recommended
Wire Size
2 mm
(AWG)
2 to 5.5
(14 to 10)
2
(14)
Wire Type
F7A40P7 U/T1, V/T2, W/T3
F7A41P5 U/T1, V/T2, W/T3
F7A42P2 U/T1, V/T2, W/T3
M4
M4
M4
1.2 to 1.5
1.2 to 1.5
1.2 to 1.5
2 to 5.5
(14 to 10)
2 to 5.5
(14 to 10)
2 to 5.5
(14 to 10)
F7A43P7
F7A45P5
F7A47P5
F7A4011
U/T1, V/T2, W/T3
U/T1, V/T2, W/T3
U/T1, V/T2, W/T3
U/T1, V/T2, W/T3
M4
M4
M4
M5
1.2 to 1.5
1.2 to 1.5
1.8
2.5
F7A4015
F7A4018
F7A4022
F7A4030
F7A4037
F7A4045
U/T1, V/T2, W/T3
R/L1, S/L2, T/L3, , 1, 2, U/T1, V/T2,
W/T3
B1, B2
M5
M5
(M6)
M6
M5
M6
R/L1, S/L2, T/L3, , 1, 3, U/T1, V/T2,
W/T3, R1/L11, S1/L21, T1/L31
M6
M8
R/L1, S/L2, T/L3, , 1, 3, U/T1, V/T2,
W/T3, R1/L11, S1/L21, T1/L31
M6
M8
R/L1, S/L2, T/L3, , 1, U/T1, V/T2, W/
T3, R1/L11, S1/L21, T1/L31
3
M8
M6
M8
R/L1, S/L2, T/L3, , 1, U/T1, V/T2, W/
T3, R1/L11, S1/L21, T1/L31
3
M8
M6
M8
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
2 to 5.5
(14 to 10)
3.5 to 5.5
(12 to 10)
2 to 5.5
(14 to 10)
5.5(10)
3.5 to 5.5
(12 to 10)
5.5 to 14
(10 to 6)
8 to 14
(8 to 6)
5.5 to 14
(10 to 6)
8 to 38
(8 to 2)
8
(8)
8 to 22
(8 to 4)
14 to 22
(6 to 4)
14 to 38
(6 to 2)
22
(4)
22 to 38
(4 to 2)
22 to 60
(4 to 1/0)
8 to 22
(8 to 4)
22 to 38
(4 to 2)
38 to 60
(2 to 1/0)
8 to 22
(8 to 4)
22 to 38
(4 to 2)
2
(14)
2
(14)
2
(14)
-
22
(4)
38
(2)
8
(8)
8
(8)
8
(8)
8
(8)
5.5
(10)
5.5
(10)
3.5
(12)
8
(8)
5.5
(10)
14
(6)
14
(6)
22
(4)
22
(4)
38
(2)
3.5
(12)
2
(14)
3.5
(12)
2
(14)
-
22
(4)
Power cables, e.g., 600 V vinyl power cables
Wiring Main Circuit Terminals
Inverter
Model
CIMR
F7A4055
F7A4075
F7A4090
F7A4110
F7A4132
F7A4160
R/L1, S/L2, T/L3, , 1, U/T1, V/T2,
W/T3, R1/L11, S1/L21, T1/L31
3
3
3
3
3
Table 2.2 400 V Class Wire Sizes (Continued)
Terminal Symbol
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31 r/ 1, 200/
2
200, 400/
2
400
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31 r/ 1, 200/
2
200, 400/
2
400
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31 r/ 1, 200/
2
200, 400/
2
400
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31
3 r/ 1, 200/
2
200, 400/
2
400
R/L1, S/L2, T/L3, , 1
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31 r/ 1, 200/
2
200, 400/
2
400
Terminal
Screws
M8
M6
M8
M10
M10
M8
M10
M4
M10
M10
M8
M10
M4
M10
M10
M8
M12
M4
M10
M10
M8
M12
M4
M12
M12
M8
M12
M4
Tightening
Torque
(N•m)
9.0 to 10.0
4.0 to 5.0
9.0 to 10.0
17.6 to 22.5
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
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
17.6 to 22.5
8.8 to 10.8
31.4 to 39.2
1.3 to 1.4
17.6 to 22.5
17.6 to 22.5
8.8 to 10.8
31.4 to 39.2
1.3 to 1.4
31.4 to 39.2
31.4 to 39.2
8.8 to 10.8
31.4 to 39.2
1.3 to 1.4
Possible
Wire Sizes mm
2
(AWG)
Recommended
Wire Size mm 2
(AWG)
50
(1)
Wire Type
-
22
(4)
60
(2/0)
50
(1/0)
-
600
(2/0)
1.25
(16)
80 × 2P
(3/0 × 2P)
60 × 2P
(2/0 × 2P)
-
100
(4/0)
1.25
(16)
100 × 2P
(4/0 × 2P)
80 × 2P
(3/0 × 2P)
-
50 × 2P
(1/0 × 2P)
1.25
(16)
38
(2)
1.25
(16)
100
(4/0)
100
(4/0)
-
50
(1)
1.25
(16)
50 × 2P
(1/0 × 2P)
50 × 2P
(1/0 × 2P)
-
Power cables, e.g., 600 V vinyl power cables
50 to 60
(1 to 1/0)
0.5 to 5.5
(20 to 10)
80 to 100
(3/0 to 4/0)
60 to 100
(2/0 to 4/0)
8 to 60
(8 to 2/0)
100 to 150
(4/0 to 300)
0.5 to 5.5
(20 to 10)
100 to 200
(4/0 to 400)
80 to 200
(3/0 to 400)
8 to 60
(8 to 2/0)
50 to 150
(1/0 to 300)
0.5 to 5.5
(20 to 10)
80 to 100
(3/0 to 4/0)
8 to 22
(8 to 4)
50 to 100
(1 to 4/0)
0.5 to 5.5
(20 to 10)
50 to 100
(1/0 to 4/0)
50 to 100
(1/0 to 4/0)
8 to 60
(8 to 2/0)
60 to 150
(2/0 to 300)
8 to 22
(8 to 4)
22 to 38
(4 to 2)
60 to 100
(2/0 to 4/0)
50 to 100
(1/0 to 4/0)
5.5 to 22
(10 to 4)
38 to 60
(2 to 2/0)
0.5 to 5.5
(20 to 10)
80 to 100
(3/0 to 4/0)
2-
9
2
-10
Inverter
Model
CIMR
F7A4185
F7A4220
F7A4300
, 1
3
, 1
3
, 1
3
Terminal Symbol
R/L1, S/L2, T/L3
Table 2.2 400 V Class Wire Sizes (Continued)
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31 r/ 1, 200/
2
200, 400/
2
400
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3, R1/L11, S1/L21, T1/L31 r/ 1, 200/
2
200, 400/
2
400
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
U/T1, V/T2, W/T3 r/ 1, 200/
2
200, 400/
2
400
Terminal
Screws
M16
M16
M16
M16
M16
M4
M16
M16
M16
M16
M16
M4
M16
M16
M16
M16
M16
M16
M4
Tightening
Torque
(N•m)
78.4 to 98
78.4 to 98
78.4 to 98
78.4 to 98
78.4 to 98
1.3 to 1.4
78.4 to 98
78.4 to 98
78.4 to 98
78.4 to 98
78.4to 98
1.3 to 1.4
78.4 to 98
78.4 to 98
78.4 to 98
78.4 to 98
78.4 to 98
78.4 to 98
1.3 to 1.4
Possible
Wire Sizes mm
2
(AWG)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
0.5 to 5.5
(20 to 10)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
0.5 to 5.5
(20 to 10)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
100 to 325
(4/0 to 600)
0.5 to 5.5
(20 to 10)
Recommended
Wire Size mm 2
(AWG)
150 × 2P
(300 × 2P)
125 × 2P
(250 × 2P)
325 × 2P
(600 × 2P)
-
125 × 2P
(250 × 2P)
1.25
(16)
100 × 2P
(3/0 × 2P)
1.25
(16)
250 × 2P
(500 × 2P)
200 × 2P
(400 × 2P)
125 × 4P
(250 × 4P)
-
125 × 2P
(250 × 2P)
1.25
(16)
125 × 4P
(250 × 4P)
125 × 2P
(250 × 2P)
125 × 4P
(4/0 × 4P)
200 × 4P
(400 × 4P)
-
Wire Type
Power cables, e.g., 600 V vinyl power cables
* The wire thickness is set for copper wires at 75 ° C.
Wiring Main Circuit Terminals
Table 2.3 Closed-loop Connector Sizes (JIS C2805) (200 V Class and 400 V Class)
Wire Thickness (mm 2 ) Terminal Screws
M3.5
0.5
Size
1.25 to 3.5
M4
M3.5
1.25 to 4
1.25 to 3.5
0.75
M4 1.25 to 4
1.25
M3.5
M4
M3.5
1.25 to 3.5
1.25 to 4
2 to 3.5
2
M4
M5
M6
2 to 4
2 to 5
2 to 6
3.5/5.5
8
14
22
30/38
50/60
M5
M6
M8
M6
M8
M6
M8
M8
M8
M10
M8
M4
M5
M6
M8
80
100
100
150
200
325
M10
M12
M12 x 2
M16
2 to 8
5.5 to 4
5.5 to 5
5.5 to 6
5.5 to 8
8 to 5
8 to 6
8 to 8
14 to 6
14 to 8
22 to 6
22 to 8
38 to 8
60 to 8
60 to 10
80 to 10
100 to 10
100 to 12
150 to 12
200 to 12
325 to 12
325 to 16
IMPORTANT
1. Determine 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:
Line voltage drop (V) = 3 x wire resistance (W/km) x wire length (m) x current (A) x 10 -3
2. Use a closed-loop connector (made by J.S.T. Mfg. Co., Ltd. or an equivalent) for the main circuit input and output terminals of Inverters of 200V 11 kW or more and those of 400V 22 kW or more.
2-
11
2
-12
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.
Table 2.4 Main Circuit Terminal Functions (200 V Class and 400 V Class)
Purpose
Main circuit power input
Terminal Symbol
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
Model: CIMR-F7A □
200 V Class 400 V Class
20P4 to 2110 40P4 to 4300
2022 to 2110 4022 to 4300
Inverter outputs U/T1, V/T2, W/T3 20P4 to 2110 40P4 to 4300
20P4 to 2110 40P4 to 4300 DC power input 1,
Braking Resistor Unit connection
B1, B2
DC reactor connection 1, 2
20P4 to 2018
20P4 to 2018
40P4 to 4018
40P4 to 4018
Braking Unit connection 3, 2022 to 2110 4022 to 4300
Ground 20P4 to 2110 40P4 to 4300
Wiring Main Circuit Terminals
Main Circuit Configurations
The main circuit configurations of the Inverter are shown in Fig 2.5
.
Table 2.5 Inverter Main Circuit Configurations
200 V Class 400 V Class
CIMR-F7A20P4 to 2018 CIMR-F7A40P4 to 4018
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
R/L1
S/L2
T/L3
Power supply
Control circuits
CIMR-F7A2022, 2030
Power supply
Control circuits
CIMR-F7A4022 to 4055
U/T1
V/T2
W/T3
Power supply
Control circuits
CIMR-F7A2037 to 2110 a b
Power supply
Control circuits
CIMR-F7A4075 to 4300 a b a b
Power supply
Control circuits a b
Power supply
Control circuits
Note Consult your Yaskawa representative before using 12-phase rectification.
* These terminals are wired before shipment. When using DC power for the main circuit power supply, remove the wires between R-r/l
200 V Class Inverters, input 200 VAC to r/l
1
- s/l
2
, or, for 400 V Class Inverters, input either 200 VAC to r/l
1
and S-s/l
2
, then, for
1
- s200/l
2
200 or 400 VAC to r/l
1
- s400/l
2
400.
2-
13
2
-14
Standard Connection Diagrams
Standard Inverter connection diagrams are shown in Fig 2.5.
The connections depend on the Inverter capacity.
CIMR-F7A20P4 to 2018 and 40P4 to 4018
DC reactor
(optional)
Braking Resistor
Unit (optional)
CIMR-F7A2022, 2030, and 4022 to 4055
Braking Resistor
Unit (optional)
Braking Unit
(optional)
3-phase 200
VAC (400 VAC)
3-phase 200
VAC (200 VAC)
Be sure to remove the short-circuit bar before connecting the DC reactor.
CIMR-FA2037 to 2110
Braking Resistor
Unit (optional)
Braking Unit
(optional)
The DC reactor is built in.
CIMR-F7A4075 to 4300
Braking Resistor
Unit (optional)
Braking Unit
(optional)
3-phase
200 VAC
3-phase
400 VAC l
Control power is supplied internally from the main circuit DC power supply for all Inverter models.
Fig 2.5 Main Circuit Terminal Connections l
Wiring Main Circuit Terminals
Wiring the Main Circuits
This section describes wiring connections for the main circuit inputs and outputs.
Wiring Main Circuit Inputs
Observe the following precautions for wiring the main circuit power supply inputs.
Installing a Molded-case Circuit Breaker
Always connect the power input terminals (R, S, and T) and power supply via a molded-case circuit breaker
(MCCB) suitable for the Inverter.
• Choose an MCCB with a capacity of 1.5 to 2 times the Inverter's rated current.
•
•
For the MCCB's time characteristics, be sure to consider the Inverter's overload protection (one minute at
150% of the rated output current).
If the same MCCB is to be used for more than one Inverter, or other devices, set up a sequence so that the power supply will be turned OFF by a fault output, as shown in Fig 2.6
.
Inverter
20P4 to 2030: 3-phase,
200 to 240 VAC, 50/60 Hz
2037 to 2110: 3-phase,
200 to 230 VAC, 50/60 Hz
40P4 to 4300: 3-phase,
380 to 460 VAC, 50/60 Hz
Power supply
Fault output
(NC)
* For 400 V Class Inverters, connect a 400/200 V transformer.
Fig 2.6 MCCB Installation
Installing a Ground Fault Interrupter
Inverter outputs use high-speed switching, so high-frequency leakage current is generated. Therefore, at the
Inverter primary side, use a ground fault interrupter to detect only the leakage current in the frequency range that is hazardous to humans and exclude high-frequency leakage current.
•
•
For the special-purpose ground fault interrupter for Inverters, choose a ground fault interrupter with a sensitivity amperage of at least 30 mA per Inverter.
When using a general ground fault interrupter, choose a ground fault interrupter with a sensitivity amperage of 200 mA or more per Inverter and with an operating time of 0.1 s or more.
2-
15
2
-16
Installing a Magnetic Contactor
If the power supply for the main circuit is to be shut off during a sequence, a magnetic contactor can be used.
When a magnetic contactor is installed on the primary side of the main circuit to forcibly stop the Inverter, however, the regenerative braking does not work and the Inverter will coast to a stop.
• 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, however, may cause the Inverter to break down.
Start and stop the Inverter at most once every 30 minutes.
•
•
When the Inverter is operated with the Digital Operator, automatic operation cannot be performed after recovery from a power interruption.
If the Braking Resistor Unit is used, program the sequence so that the magnetic contactor is turned OFF by the contact of the Unit's thermal overload relay.
Connecting Input Power Supply to the Terminal Block
Input power supply can be connected to any terminal R, S or T on the terminal block; the phase sequence of input power supply is irrelevant to the phase sequence.
Installing an AC Reactor or DC Reactor
If the Inverter is connected to a large-capacity power transformer (600 kW or more) or the phase advancing capacitor is switched, an excessive peak current may flow through the input power circuit, causing the converter unit to break down.
To prevent this, install an optional AC Reactor on the input side of the Inverter or a DC reactor to the DC reactor connection terminals.
This also improves the power factor on the power supply side.
Installing a Surge Absorber
Always use a surge absorber or diode for inductive loads near the Inverter. These inductive loads include magnetic contactors, electromagnetic relays, solenoid valves, solenoids, and magnetic brakes.
Installing a Noise Filter on Power Supply Side
Install a noise filter to eliminate noise transmitted between the power line and the Inverter.
• Correct Noise Filter Installation
Power supply
MCCB
Noise filter
Inverter IM
MCCB
Other controllers
Use a special-purpose noise filter for Inverters.
Fig 2.7 Correct Power supply Noise Filter Installation
Wiring Main Circuit Terminals
• Incorrect Noise Filter Installation
Power supply MCCB
Inverter
MCCB
Generalpurpose noise filter
Other controllers
IM
Power supply
MCCB
Generalpurpose noise filter
Inverter IM
MCCB
Other controllers
Do not use general-purpose noise filters. No generalpurpose noise filter can effectively suppress noise generated from the Inverter.
Fig 2.8 Incorrect Power supply Noise Filter Installation
Wiring the Output Side of Main Circuit
Observe the following precautions when wiring the main output circuits.
Connecting the Inverter and Motor
Connect output terminals U, V, and W to motor lead wires U, V, and W, respectively.
Check that the motor rotates forward with the Forward Run Command. Switch over any two of the output terminals to each other and reconnect if the motor rotates in reverse with the Forward Run Command.
Never Connect a Power Supply to Output Terminals
Never connect a power supply to output terminals U, V, and W. If voltage is applied to the output terminals, 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 casing, an electric shock or grounding will occur. This is extremely hazardous. Do not short the output wires.
Do Not Use a Phase Advancing Capacitor or Noise Filter
Never connect a phase advancing capacitor or LC/RC noise filter to an output circuit. The high-frequency components of the Inverter output may result in overheating or damage to these part or may result in damage to the Inverter or cause other parts to burn.
Precautions When Using an Electromagnetic Switch
Never connect an electromagnetic switch (MC) between the Inverter and motor and turn it ON or OFF during operation. If the MC is turned ON while the Inverter is operating, a large inrush current will be created and the overcurrent protection in the Inverter will operate.
2-
17
2
-18
When using an MC to switch to a commercial power supply, stop the Inverter and motor before operating the
MC. Use the speed search function if the MC is operated during operation. If measures for momentary power interrupts are required, use a delayed release MC.
Installing a Thermal Overload Relay
This Inverter has an electronic thermal protection function to protect the motor from overheating. If, however, more than one motor is operated with one Inverter or a multi-polar motor is used, always install a thermal relay (THR) between the Inverter and the motor and set L1-01 to 0 (no motor protection). The sequence should be designed so that the contacts of the thermal overload relay turn OFF the magnetic contactor on the main circuit inputs.
Installing a Noise Filter on Output Side
Connect a noise filter to the output side of the Inverter to reduce radio noise and inductive noise.
Power supply
MCCB
Inverter
Noise filter
IM
Radio noise
Inductive noise
AM radio
Signal line
Controller
Inductive Noise:
Radio Noise:
Electromagnetic induction generates noise on the signal line, causing the controller to malfunction.
Electromagnetic waves from the Inverter and cables cause the broadcasting radio receiver to make noise.
Fig 2.9 Installing a Noise Filter on the Output Side
Countermeasures Against Inductive Noise
As described previously, a noise filter can be used to prevent inductive noise from being generated on the output side. Alternatively, cables can be routed through a grounded metal pipe to prevent inductive noise. Keeping the metal pipe at least 30 cm away from the signal line considerably reduces inductive noise.
Power supply
MCCB Metal pipe
Inverter IM
30 cm min.
Signal line
Controller
Fig 2.10 Countermeasures Against Inductive Noise
Wiring Main Circuit Terminals
Countermeasures Against Radio Interference
Radio noise is generated from the Inverter as well as from the input and output lines. To reduce radio noise, install noise filters on both input and output sides, and also install the Inverter in a totally enclosed steel box.
The cable between the Inverter and the motor should be as short as possible.
Power supply
MCCB
Steel box
Noise filter
Inverter
Noise filter
Metal pipe
IM
Fig 2.11 Countermeasures Against Radio Interference
Cable Length between Inverter and Motor
If the cable between the Inverter and the motor is long, the high-frequency leakage current will increase, causing the Inverter output current to increase as well. This may affect peripheral devices. To prevent this, adjust the carrier frequency (set in C6-01, C6-02) as shown in Table 2.6
. (For details, refer to Chapter 5 User Constants .)
Cable length
Carrier frequency
Table 2.6 Cable Length between Inverter and Motor
50 m max.
15 kHz max.
100 m max.
10 kHz max.
More than 100 m
5 kHz max.
Ground Wiring
Observe the following precautions when wiring the ground line.
•
•
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 .
Do not share the ground wire with other devices, such as welding machines or power tools.
•
•
Always minimize the length of the ground wire.
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 using more than one Inverter, be careful not to loop the ground wire.
OK
Fig 2.12 Ground Wiring
NO
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19
2
-20
Connecting the Braking Resistor (ERF)
A Braking Resistor that mounts to the Inverter can be used with 200 V and 400 V Class Inverters with outputs from 0.4 to 3.7 kW.
Connect the braking resistor as shown in Fig 2.13
.
L8-01 (Protect selection for internal DB resistor)
L3-04 (Stall prevention selection during deceleration)
(Select either one of them.)
Table 2.7
1 (Enables overheat protection)
0 (Disables stall prevention function)
3 (Enables stall prevention function with braking resistor)
Inverter
Braking resistor
Fig 2.13 Connecting the Braking Resistor
IMPORTANT
The braking resistor connection terminals are B1 and B2. Do not connect to any other terminals. Connecting to any terminals other than B1 or B2 can cause the resistor to overheat, resulting in damage to the equipment.
Connecting the Braking Resistor Unit (LKEB) and Braking Unit (CDBR)
Use the following settings if using a Braking Resistor Unit and Braking Unit.
A Braking Resistor that mounts to the Inverter can also be used with Inverters with outputs from 0.4 to 3.7
kW.
Table 2.8
L8-01 (Protect selection for internal DB resistor) 0 (Disables overheat protection)
L3-04 (Stall prevention selection during deceleration)
(Select either one of them.)
0 (Disables stall prevention function)
3 (Enables stall prevention function with braking resistor)
L8-01 is used when a braking resistor without thermal overload relay trip contacts (ERF type mounted to
Inverter) is connected.
The Braking Resistor Unit cannot be used and the deceleration time cannot be shortened by the Inverter if L3-
04 is set to 1 (i.e., if stall prevention is enabled for deceleration).
Wiring Main Circuit Terminals
To prevent the Unit from overheating, design the sequence to turn OFF the power supply for the thermal overload relay trip contacts of the Unit as shown in Fig 2.14
.
200 V and 400 V Class Inverters with 0.4 to 18.5 kW Output
LKEB Braking
Resistor Unit
Inverter
Thermal overload relay trip contact
IMPORTANT
When connecting an separately-installed type Braking Resistor Unit (model CDBR), connect the B1 terminal of the Inverter to the + terminal of the Braking Resistor Unit and connect the − terminal of the Inverter to the − terminal of the Braking Resistor Unit. The B2 terminal is not used in this case.
200 V and 400 V Class Inverters with 22 kW or higher Output
CDBR Braking
Unit
LKEB Braking
Resistor Unit
Inverter
Thermal protector trip contact
Thermal overload relay trip contact
Fig 2.14 Connecting the Braking Resistor Unit and Braking Unit
Connecting Braking Units in Parallel
When connecting two or more Braking Units in parallel, use the wiring and connectors shown in Fig 2.15
.
There are connectors for selecting whether each Braking Unit is to be a Master or Slave. Select “Master” for the first Braking Unit only, and select “Slave” for all other Braking Units (i.e., from the second Unit onwards).
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21
2
-22
Braking resistor overheating contacts (Thermal protector contacts)
Braking
Resistor
Unit
Braking resistor overheating contacts (Thermal protector contacts)
Braking
Resistor
Unit
Braking resistor overheating contacts (Thermal protector contacts)
Braking
Resistor
Unit
Inverter
Braking Unit #2 Braking Unit #3
Braking Unit #1
Cooling fin overheating contacts (thermostat contacts)
Cooling fin overheating contacts (thermostatic contacts)
Cooling fin overheating contacts (thermostatic contacts)
Fig 2.15 Connecting Braking Units in Parallel
Breaking Unit Application Precautions
When using a Braking Resistor Unit, create a sequence to detect overheating of the braking resistor and turn
OFF the power supply to the Inverter.
MCCB
Three-phase power:
200 to 240 V, 50/60 Hz or
380 to 480 V, 50/60 Hz
R/L1
S/L2
T/L3
Overload relay trip contact of Braking Resistor Unit
Inverter
MC MA
Fault contacts
* Use a transformer with 200 and 400 V outputs for the power 400 V Inverter.
Fig 2.16 Power Shutoff Sequence
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