Electrical installation
50
Procedure
Cabling drawings with tightening torques for each frame size are presented on
pages
1. Frame sizes C and D only: Remove the two plastic connector covers at the top
and bottom of the drive. Each cover is fastened with two screws.
2. On IT (ungrounded) systems and corner grounded TN systems, disconnect the
internal varistors by removing the screw labelled VAR (located close to the
supply terminals on the power unit).
WARNING!
If a drive whose varistors are not disconnected is installed on an IT
system (an ungrounded power system or a high resistance grounded [over 30 ohms]
power system), the system will be connected to earth potential through the varistors
of the drive. This may cause danger or damage the drive.
If a drive whose varistors are not disconnected is installed on a corner grounded TN
system, the drive will be damaged.
3. Fasten the two cable clamp plates included to the drive (see page
), one at
the top, one at the bottom. The clamp plates are identical. Using the cable clamp
plates as shown below will provide better EMC compliance, as well as act as a
strain relief for the power cables.
4. Strip the power cables so that the shields are bare at the cable clamps.
5. Twist the ends of the cable shield wires into pigtails.
6. Strip the ends of the phase conductors.
7. Connect the phase conductors of the supply cable to the U1, V1 and W1
terminals of the drive.
Connect the phase conductors of the motor cable to the U2, V2 and W2
terminals.
Connect the conductors of the resistor cable (if present) to the R+ and R–
terminals.
With frame size C or D, attach the screw terminal lugs included to the
conductors first. Crimp lugs can be used instead of the screw lugs.
8. Tighten the cable clamps onto the bare cable shields.
9. Crimp a cable lug onto each shield pigtail. Fasten the lugs to ground terminals.
Note:
Try to work out a compromise between the length of the pigtail and the
length of unshielded phase conductors as both should ideally be as short as
possible.
10. Cover visible bare shield and pigtail with insulating tape.
11. With frame size C or D, cut suitable slots on the edges of the connector covers
to accommodate the supply and motor cables. Refit the covers. (Tighten the
screws to 3 N·m [25 lbf·in]).
12. Secure the cables outside the unit mechanically.
Содержание ACSM1 Series
Страница 1: ...ACSM1 Hardware Manual ACSM1 04 Drive Modules 0 75 to 45 kW...
Страница 2: ......
Страница 4: ......
Страница 14: ...Table of contents 14...
Страница 20: ...About this manual 20...
Страница 24: ...The ACSM1 04 24...
Страница 30: ...Planning the cabinet assembly 30...
Страница 46: ...Planning the electrical installation 46...
Страница 70: ...Maintenance 70...
Страница 84: ...Technical data 84...
Страница 90: ...Mains filters 90...
Страница 96: ...Dimension drawings 96 Frame size A...
Страница 97: ...Dimension drawings 97...
Страница 98: ...Dimension drawings 98 Frame size B...
Страница 99: ...Dimension drawings 99...
Страница 100: ...Dimension drawings 100 Frame size C air cooled module...
Страница 101: ...Dimension drawings 101...
Страница 102: ...Dimension drawings 102 Frame size C for cold plate mounting...
Страница 103: ...Dimension drawings 103 Frame size D air cooled module...
Страница 104: ...Dimension drawings 104 Frame size D for cold plate mounting...
Страница 106: ...Dimension drawings 106 Mains filters type JFI xx...
Страница 108: ...Dimension drawings 108 Braking resistors type JBR xx...
Страница 110: ...Dimension drawings 110...
Страница 111: ......