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CABLING AND CONNECTIONS vacon • 29

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6. CABLING AND CONNECTIONS

6.1 Understanding the power unit topology

Figure 6-1 and Figure 6-2 show the principles for mains and motor connections of the basic 6-pulse

drive in frame sizes FR10 to FR14.

Some units built in frame size FR11 have double input devices and require an even number of

supply cables but an uneven number of motor cables can be used.

Units built in frame size FR12 consist of two power modules and require an even number of supply

and motor cables. See Figure 6-1 and the tables in chapter 6.2.6 .

The 12-pulse drives always have a double set of inputs. The motor connection is size dependent as

described above and in Figure 6-1.

M M M

ud1011k4.fh11

M M M

NFE NFE NFE

INU

NFE NFE NFE

INU INU INU INU

NFE NFE NFE NFE

du/dt du/dtdu/dt

du/dt

FR9/10

Single input

Single output

FR11*

Double input*

Single output

FR12

Double input

Double output

Note!

Min cable

length 5m

* FR11 types 0460 6 and 0502 6 have single input terminals

FR13

Single input

Single output

FR14, NX 1500 6

Single input

Double output

FR14

Double input

Double output

** FR13 units NXP1300 and NXP1450 have three NFE units.

Figure 6-1. Topology of mechanical sizes FR9 – FR14, 6/12-pulse supply

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 102 103

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