Cabling and connections

33(96)

 

 

 

6.1.3Installation instructions

1

2

Before starting the installation, check that none of the components of the frequency converter is live.

The NXL frequency converter types MF2 and MF3 shall be installed inside switchgear, separate cubicle or electrical room because of the protection class IP20 and the fact that the cable terminals are not protected.

3

4

5

Place the motor cables sufficiently far from other cables:

￿Avoid placing the motor cables in long parallel lines with other cables

￿If the motor cables run in parallel with other cables, note the minimum distances between the motor cables and other cables given in table below.

￿The given distances also apply between the motor cables and signal cables of other systems.

￿The maximum length of the motor cables is 30 m (MF2-MF3), 50 m (MF4) and 300 m (MF5 – MF6).

￿The motor cables should cross other cables at an angle of 90 degrees.

 

Distance

Shielded

 

 

between cables

cable

 

 

[m]

[m]

 

 

 

 

 

 

0 .3

2 0

 

 

1 .0

5 0

 

 

 

 

 

If cable insulation checks are needed, see Chapter 6.1.5.

Connect the cables:

￿Strip the motor and mains cables as advised in Table 6-4 and Figure 6-5.

￿Connect the mains, motor and control cables into their respective terminals (see e.g.).

￿For Information on cable installation according to UL regulations see Chapter 6.1.4.

￿Make sure that the control cable wires do not come in contact with the electronic components of the unit.

￿If an external brake resistor (option) is used, connect its cable to the appropriate terminal.

￿Check the connection of the earth cable to the motor and the frequency converter terminals marked with .

￿Connect the separate shield of the motor cable to the earth plate of the frequency converter, motor and the supply centre.

￿Ensure that the control cables or the cables of the unit are not trapped between the frame and the protection plate.

6

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Honeywell NXL user manual Cabling and connections 3396, Installation instructions

NXL specifications

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