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DC−bus operation
Fuses and cable cross−sections
DC supply
12
471
EDS82EV903−3.0
Inverter
DC fuse 14 × 51
(EFSGR0xx0AYHx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
E82xV551K4C
3/PE
400 V
12
12
1.5
1.5
E82xV751K4C
12
12
1.5
1.5
E82xV152K4C
12
12
1.5
1.5
E82xV222K4C
20
20
1.5
1.5
E82xV302K4C
20
20
2.5
2.5
E82xV402K4C
32
32
2.5
2.5
E82xV552K4C
40
40
4.0
4.0
E82xV752K4C
40
40
6.0
1)
4.0
1)
E82xV113K4C
50
50
6.0
1)
4.0
1)
1)
Pin−end connector required, since a maximum cable cross−section of 4 mm
2
can be connected to the inverter.
Inverter
DC fuse NH1
(EFSGRxxx0ANVx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
E82xV153K4B
3/PE
400 V
100
100
25
E82xV223K4B
100
100
25
E82xV303K4B
200
25
E82xV453K4B
200
50
Inverter
DC fuse NH2
(EFSGRxxx0ANWx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated fuse current
Rated fuse current
+U
G
, −U
G
Laying system
F
C
[A]
[A]
[mm2]
[mm2]
E82xV553K4B
3/PE
400 V
250
95
E82xV753K4B
350
95
E82xV903K4B
350
95
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DC−bus operation
Fuses and cable cross−sections
DC supply
12
472
EDS82EV903−3.0
9300 vector frequency inverter
Inverter
DC fuse 14 × 51
(EFSGR0xx0AYHx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
EVF9321−xV
3/PE
400 V
12
12
1.5
1.5
EVF9322−xV
12
12
1.5
1.5
EVF9323−xV
12
12
1.5
1.5
EVF9324−xV
20
20
1.5
1.5
EVF9325−xV
40
40
4
4
EVF9326−xV
50
50
1)
4
1)
Pin−end connector required, since a maximum cable cross−section of 4 mm
2
can be connected to the inverter.
Inverter
DC fuse NH1
(EFSGRxxx0ANVx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
EVF9327−xV
3/PE
400 V
100
100
25
EVF9328−xV
100
100
25
EVF9329−xV
200
25
EVF9330−xV
200
50
Inverter
DC fuse NH2
(EFSGRxxx0ANWx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated fuse current
Rated fuse current
+U
G
, −U
G
Laying system
F
C
[A]
[A]
[mm2]
[mm2]
EVF9331−xV
3/PE
400 V
250
95
EVF9332−xV
350
95
EVF9333−xV
350
95
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DC−bus operation
Fuses and cable cross−sections
DC supply
12
473
EDS82EV903−3.0
9300 servo inverter
Inverter
DC fuse 14 × 51
(EFSGR0xx0AYHx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
EVS9321
3/PE
400 V
12
12
1.5
1.5
EVS9322
12
12
1.5
1.5
EVS9323
12
12
1.5
1.5
EVS9324
20
20
1.5
1.5
EVS9325
40
40
4.0
4.0
EVS9326
50
50
6.0 1)
4.0
1)
Pin−end connector required, since a maximum cable cross−section of 4 mm
2
can be connected to the inverter.
Inverter
DC fuse NH1
(EFSGRxxx0ANVx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
EVS9327
3/PE
400 V
100
100
25
EVS9328
100
100
25
EVS9329
200
25
EVS9330
200
50
EVS9331
200
50
Inverter
DC fuse NH2
(EFSGRxxx0ANWx)
DC fuse 22 × 58
(EFSGR0xx0AYIx)
Installation in
accordance with
EN 60204−1
Type
Mains
Rated current of fuse
Rated current of fuse
+U
G
, −U
G
Laying system
B2
C
[A]
[A]
[mm2]
[mm2]
EVS9332
3/PE
400 V
250
95
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DC−bus operation
Fuses and cable cross−sections
Protection in DC−bus operation
12
474
EDS82EV903−3.0
12.5.3
Protection in DC−bus operation
Fusing concept and risk of damage
For a DC−bus system, we recommend to select a progressive fusing concept. The risk of
damage in the event of an error depends on the selected fusing. The table below helps you
analysing the risk.
Note!
ƒ
At the motor end, the current limitation of the controller acts as cable
protection. (Check UL appendixes for approval!) Here, the cable cross−section
on the motor side must be dimensioned for the fusing on the supply side.
ƒ
For group drives, we recommend to additionally fuse single drives and to
thermally monitor the motors.
ƒ
If the mains supply reduces the cable cross−sections towards the individual
axes, the cables must be protected through the following measures:
–Use fuses that ensure cable protection
–Short−circuit−proof laying
–Thermal monitoring of the cables
Definition "Internal error"
For controllers:
ƒ
The fault location is between the connection point on the DC busbar and upstream
to terminals U, V, W in the controller.
For power supply units:
ƒ
The fault location is between the mains input (terminals L1, L2, L3) and the most
remote location on the DC busbar.
With mains fuses without monitoring function (F1 ... F3)
Cable protection
No device protection
Protective
function
On the supply side
On the DC busbar
On the motor side
Possible errors
One or more controllers with
device−internal
short circuit (+U
G
 −U
G
)
device−internal earth fault (+U
G
PE/−U
G
PE)
Mains supply failure of one
controller with decentralised
supply
Risk
Multiple controllers connected in parallel supply the fault
location(s) via the DC busbar. This may lead to the intact
controllers being overloaded because the faulty controller
cannot be activated individually.
Possible damages with central and decentralised supply
The faulty controller is destroyed
Still intact controllers are destroyed
The power supply unit is destroyed
In the event of a failure of a
supply point on the supply side
due to the response of F1...F3,
the still supplied controllers in
the DC−bus system may be
overloaded.
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DC−bus operation
Fuses and cable cross−sections
Protection in DC−bus operation
12
475
EDS82EV903−3.0
With mains fuses with monitoring function (F1 ... F3)
Cable protection
Device protection in the event
of overload
No device protection in the
event of short circuit
Protective
function
On the supply side
On the DC busbar
On the motor side
In the event of a failure of a
supply point due to the
response of F1...F3, the other
controllers in the DC−bus
system are not overloaded. The
signalling contact disconnects
the mains for the entire DC−bus
system.
Possible errors
One or more controllers with
device−internal
short circuit (+U
G
 −U
G
)
device−internal earth fault (+U
G
PE/−U
G
PE)
Risk
Multiple controllers connected in parallel supply the fault location(s) via the DC busbar. This
may lead to the intact controllers being overloaded because the faulty controller cannot be
activated individually.
Possible damages with central and decentralised supply
The faulty controller is destroyed
Still intact controllers are destroyed
The power supply unit is destroyed
With mains fuses with monitoring function (F1 ... F3) and DC fuses (F4 ... F5)
Cable protection
Device protection in the event
of overload
Device protection in the event
of short circuit
Protective
function
On the supply side
On the DC busbar
On the motor side
In the event of a failure of a
supply point due to the
response of F1...F3, the other
controllers in the DC−bus
system are not overloaded. The
signalling contact disconnects
the mains for the entire DC−bus
system.
Possible errors
One or more controllers with
–device−internal
short circuit (+U
G
 −U
G
)
–device−internal earth fault (+U
G
PE/−U
G
PE)
Risk
Possible damages with central and decentralised supply
The faulty controller is destroyed
Comment
The selective activation on the supply side and on the DC−bus side reduces the extent of
possible consequential damages.
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DC−bus operation
Basic dimensioning
Conditions
12
476
EDS82EV903−3.0
12.6
Basic dimensioning
In the following table you will find some basic data to select a drive network. Two examples
show you how to work with the tables.
12.6.1
Conditions
The input powers specified in the tables are only valid if the following requirements for
DC−bus operation are observed:
Basic condition
All feeding points
Connection to the three−phase system only via mains chokes specified.
Mains voltage
U
mains
= 230 V / 50 Hz
U
mains
= 400 V / 50 Hz
Switching frequencies
8200 vector
4 kHz or 8 kHz.
93xx
8 kHz
8200 vector
4 kHz or 8 kHz.
Operating/ambient
temperature
max. +40 C
Motors
(Three−phase asynchronous
motors, asynchronous servo
motors, synchronous servo
motors)
The DC−bus system must be dimensioned for a simultaneity factor of F
g
= 1
(All motors operate simultaneously with 100 % power in motor mode)
DC−bus operation
Basic dimensioning
Supply powers 230 V controllers
12
477
EDS82EV903−3.0
12.6.2
Supply powers 230 V controllers
The table below serves to determine the required supply power:
Supply powers in DC−bus operation, 230 V controller, three−phase
Feeding point 1
402K2C
752K2C
9365
9364
152K2C,
222K2C
551K2C,
751K2C
552K2C
302K2C
P
DC
[kW]
6.5
10.1
57.5
28.8
3.7
1.4
9.0
5.1
P
loss
[kW]
0.2
0.3
0.4
0.2
0.1
0.1
0.3
0.2
Feeding point
2...n
402K2C
5.3
752K2C
7.2
8.3
9365
39.5
45.1
47.0
9364
17.2
19.6
20.4
23.5
152K2C, 222K2C
2.1
2.4
2.5
2.9
3.0
551K2C, 751K2C
0.7
0.8
0.8
1.0
1.0
1.1
552K2C
4.3
4.8
5.1
5.8
6.1
6.9
7.4
302K2C
2.1
2.4
2.5
2.9
3.1
3.5
3.7
4.2
Empty fields:
A combination of feeding points is not possible
How to work with the table:
1. Draw a table with two columns, "P
DC
" and "P
loss
", on a sheet of paper.
2. Under "Feeding point 1", search from left to right until you find the first device of
the drive system and write down the corresponding powers, P
DC
and P
loss
, in the
table.
3. Search for the corresponding powers P
DC
of all other feeding points 2 ... n in the
same column and write them down in the table, too.
4. In the third line, search for the power losses (P
loss
) of all devices of the drive system
(including the devices which do not act as feeding points) and write them down.
5. Add all powers P
DC
of the table.
6. Add all powers Ploss of the table.
7. The powers at terminals U, V, W can be calculated by subtracting the sums
(P
DC
−Ploss).
8. Check whether the powers are sufficient to solve the drive task. If this is not the
case, connect further inverters to the mains and recalculate the powers.
12.6.3
Supply powers 400 V controllers
Your Lenze contact person will inform you about the required supply power for 400 V
controllers.
The addresses of your Lenze contact persons all over the world can be found on the back
cover pages of every Lenze publication.
DC−bus operation
Central supply (one supply point)
Central supply via external DC source
12
478
EDS82EV903−3.0
12.7
Central supply (one supply point)
One central feeding point is used to supply the DC−bus system of the controllers via +U
G
,
−U
G
.
DC−bus system
Possible supply sources
230 V controller
A DC source
400 V controller
A DC source
A regenerative power supply module
A controller with reserve power
12.7.1
Central supply via external DC source
Basic circuit diagram
A1
W
-UG+UG
A2
W
-UG+UG
F5
+
-
F5
PE
DC−bus operation
Central supply (one supply point)
Central supply 400 V with regenerative power supply unit 934X
12
479
EDS82EV903−3.0
12.7.2
Central supply 400 V with regenerative power supply unit 934X
Basic circuit diagram
K1
K1
L3
N
PE
L1
L2
U
V
W
M
3~
L1
L2
L3
+UG
-UG
mot1
X1
K1
F4
ON
OFF
U
V
W
M
3~
L1
L2
L3
+UG
-UG
X2
F5
A1
A2
Z3
L1
L2
L3
F1
+UG
-UG
Z1
F4
F2 F3
F5
mot2
M
3~
F4 F5
8200vec655
Fig. 12−4
Network of 400 V controllers with central supply via 934X regenerative power supply unit
A1, A2
400 V controller of the 8200 vector or 9300 series
Z1
Mains filter(  465)
Z3
934x regenerative power supply module
F1 ... F3
Mains fuses (  467)
F4 ... F5
Fuses on DC level (  470)
K1
Main contactor
DC−bus operation
Distributed supply (several supply points)
12
480
EDS82EV903−3.0
12.8
Distributed supply (several supply points)
The controller DC bus is supplied through +U
DC
, −U
DC
via  several controllers connected to
the mains in parallel. A 400 V mains can use  one additional regenerative power supply unit.
Basic circuit diagram
K1
K1
L3
N
PE
L1
L2
U
V
W
M
3~
L1
L2
L3
F1
+UG
-UG
RB
+UG
-UG
RB2
RB1
Z1
X1
RB
K1
F4
ON
OFF
28
xx
K1
CINH
F2 F3
Z4
U
V
W
M
3~
L1
L2
L3
+UG
-UG
Z1
X2
28
K1
CINH
S1
S2
S1
S2
F5
xx
A1
A2
Z3
8200vec657
Fig. 12−5
Network of three−phase connected controllers with decentralised supply and additional braking unit
A1, A2
230 V controller 8200 vector or 
400 V controller 8200 vector / 8400 / 9300
Z1
Mains filter(  465)
Z3
Braking unit 935x
Z4
Brake resistor
F1, F2, F3
Mains fuses (  467)
F4, F5
Fuses on DC level (  470)
K1
Mains contactor
Stop!
935x braking units must only be operated with the assigned Lenze brake
resistors because these have an integrated temperature monitoring function.
Otherwise the brake resistors may be destroyed.
Note!
When operated at 400 V mains, 934X regenerative power supply modules can
be used instead of the braking unit. Advantage: Low heat generation during
operation in generator mode.
Documents you may be interested
Documents you may be interested