ABB ACQ580-07, Hardware Manual

Page: 99 / 324

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Continuous motor cable shield/conduit or enclosure for equipment on
the motor cable
To minimize the emission level when safety switches, contactors, connection boxes or
similar equipment are installed on the motor cable between the drive and the motor:
• Install the equipment in a metal enclosure.
• Use either a symmetrical shielded cable, or install the cabling in a metal conduit.
• Make sure that there is a good and continuous galvanic connection in the
shield/conduit between drive and motor.
• Connect the shield/conduit to the protective ground terminal of the drive and the
motor.
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Separate control cable ducts
Put 24 V DC and 230 V AC (120 V AC) control cables in separate ducts, unless the
24 V DC cable is insulated for 230 V AC (120 V AC) or insulated with an insulation
sleeving for 230 V AC (120 V AC).
24 V DC
230 V AC
(120 V AC)
230 V AC
(120 V AC)
24 V DC
Implementing short-circuit and thermal overload protection
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Protecting the input cabling and drive in short-circuits
The drive is equipped with internal AC fuses (1) as standard. The fuses restrict drive
damage and prevent damage to adjoining equipment in case of a short-circuit inside
the drive.
Protect the input cable with fuses or circuit breaker (2) according to local safety
regulations, appropriate input voltage and the rated current of the drive (see chapter
Technical data (page 197) ).
Guidelines for planning the electrical installation 95