Allen-Bradley powerflex 700 Technical Data

PowerFlex 700 Technical Data
20B-TD001F-EN-P 31
Cable Recommendations
Cable Types Acceptable for 200…600 Volt Installations
A variety of cable types are acceptable for drive installations. For many installations, unshielded cable is adequate,
provided it can be separated from sensitive circuits. As an approximate guide, allow a spacing of 0.3 meters (1 foot) for
every 10 meters (32.8 feet) of length. In all cases, long parallel runs must be avoided. Do not use cable with an insulation
thickness less than or equal to 15 mils (0.4mm/0.015 in.). Use Copper wire only. Wire gauge requirements and
recommendations are based on 75° C. Do not reduce wire gauge when using higher temperature wire. See table below.
Unshielded
THHN, THWN or similar wire is acceptable for drive installation in dry environments provided adequate free air space
and/or conduit fill rates limits are provided. Do not use THHN or similarly coated wire in wet areas. Any wire chosen
must have a minimum insulation thickness of 15 Mils and should not have large variations in insulation concentricity.
Shielded/Armored Cable
Shielded cable contains all of the general benefits of multi-conductor cable with the added benefit of a copper braided
shield that can contain much of the noise generated by a typical AC drive. Strong consideration for shielded cable should
be given in installations with sensitive equipment such as weigh scales, capacitive proximity switches and other devices
that may be affected by electrical noise in the distribution system. Applications with large numbers of drives in a similar
location, imposed EMC regulations or a high degree of communications/ networking are also good candidates for shielded
cable.
Shielded cable may also help reduce shaft voltage and induced bearing currents for some applications. In addition, the
increased impedance of shielded cable may help extend the distance that the motor can be located from the drive without
the addition of motor protective devices such as terminator networks. Refer to Reflected Wave in “Wiring and Grounding
Guidelines for PWM AC Drives,” publication DRIVES-IN001.
Consideration should be given to all of the general specifications dictated by the environment of the installation, including
temperature, flexibility, moisture characteristics and chemical resistance. In addition, a braided shield should be included
and be specified by the cable manufacturer as having coverage of at least 75%. An additional foil shield can greatly
improve noise containment.
A good example of recommended cable is Belden® 295xx (xx determines gauge). This cable has four (4) XLPE insulated
conductors with a 100% coverage foil and an 85% coverage copper braided shield (with drain wire) surrounded by a PVC
jacket.
Other types of shielded cable are available, but the selection of these types may limit the allowable cable length.
Particularly, some of the newer cables twist 4 conductors of THHN wire and wrap them tightly with a foil shield. This
construction can greatly increase the cable charging current required and reduce the overall drive performance. Unless
specified in the individual distance tables as tested with the drive, these cables are not recommended and their
performance against the lead length limits supplied is not known.
Location Rating/Type Description
Standard (Option 1) 600V, 90°C (194°F)
XHHW2/RHW-2
Anixter B209500-B209507, Belden 29501-29507, or
equivalent
• Four tinned copper conductors with XLP insulation.
• Copper braid/aluminum foil combination shield and tinned copper drain wire.
• PVC jacket.
Standard (Option 2) Tray rated 600V, 90° C (194° F) RHH/RHW-2
Anixter OLF-7xxxxx or equivalent
• Three tinned copper conductors with XLPE insulation.
• 5 mil single helical copper tape (25% overlap min.) with three bare copper
grounds in contact with shield.
• PVC jacket.
Class I & II;
Division I & II
Tray rated 600V, 90° C (194° F) RHH/RHW-2
Anixter 7V-7xxxx-3G or equivalent
• Three bare copper conductors with XLPE insulation and impervious
corrugated continuously welded aluminum armor.
• Black sunlight resistant PVC jacket overall.
• Three copper grounds on #10 AWG and smaller.

Allen-Bradley powerflex 700 Specifications

General

Brand	Allen-Bradley
Model	powerflex 700
Category	Controller
Language	English