Conduit; Armored Cable / Shielded Power Cable; Selecting The Control Cables; Shielding - ABB ACQ80-04 Series Hardware Manual

shield conductivity must be at least 1/10 of the phase conductor conductivity. The
requirements are easily met with a copper or aluminum shield. The minimum
requirement of the motor cable shield of the drive is shown below. It consists of a
concentric layer of copper wires with an open helix of copper tape or copper wire. The
better and tighter the shield, the lower the emission level and bearing currents.
1 Sheath
1 Sheath
2 Copper wire shield
2 Copper wire shield
3 Helix of copper tape or copper wire
3 Helix of copper tape or copper wire
4 Filling
4 Filling
5 Cable conductors
5 Cable conductors

Conduit

Conduit
Couple separate parts of a conduit together: bridge the joints with a ground conductor
Couple separate parts of a conduit together: bridge the joints with a ground conductor
bonded to the conduit on each side of the joint. Also bond the conduits to the drive enclosure
bonded to the conduit on each side of the joint. Also bond the conduits to the drive
and motor frame. Use separate conduits for input power, motor, and control wiring. When
enclosure and motor frame. Use separate conduits for input power, motor, and control
conduit is employed, type MC continuous corrugated aluminum armor cable or shielded
wiring. When conduit is employed, type MC continuous corrugated aluminum armor
cable is not required. A dedicated ground cable is always required.
cable or shielded cable is not required. A dedicated ground cable is always required.
Note:
Do not run motor wiring from more than one drive in the same conduit.
Note: Do not run motor wiring from more than one drive in the same conduit.

Armored cable / shielded power cable

Armored cable / shielded power cable
Six-conductor (three phases and three ground) type MC continuous corrugated aluminum
Six-conductor (three phases and three ground) type MC continuous corrugated
armor cable with symmetrical grounds is available from the following suppliers (trade names
aluminum armor cable with symmetrical grounds is available from the following
in parentheses):
suppliers (trade names in parentheses):
• Anixter Wire & Cable (Philsheath)
• Anixter Wire & Cable (Philsheath)
• BICC General Corp (Philsheath)
• Rockbestos Co. (Gardex)
• BICC General Corp (Philsheath)
• Oaknite (CLX).
• Rockbestos Co. (Gardex)
Shielded power cables are available from the following suppliers:
• Oaknite (CLX).
• Belden
• LAPPKABEL (ÖLFLEX)
• Pirelli.

Selecting the control cables

￭

Shielding

All control cables must be shielded.
Use a double-shielded twisted pair cable (figure a below) for analog signals. Employ one
individually shielded pair for each signal. Do not use common return for different analog
signals.
A double-shielded cable is the best alternative for low-voltage digital signals but
single-shielded (b) twisted pair cable is also acceptable.
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