Rockwell Automation 281E ArmorStart EtherNet/IP - Getting Started - Manual (Page 11)

Publication 280E-QS001B-EN-P – February 2011
ArmorStart EtherNet/IP Distributed Motor Controller Getting Started 11
Figure 12 – Control Power Wiring Example
24V DC Control Power
• Rated Operation Voltage
– 24V DC (–15%, +10%)
• A1 = Switched +V
• A2 = Common for both switched and unswitched (–V)
• A3 = Unswitched +V
Group Motor Installations for USA and Canada Markets
The ArmorStart Distributed Motor controllers are listed for use with each other
in group installations per NFPA 79, Electrical Standard for Industrial Machinery.
When applied according to the group motor installation requirements, two or
more motors, of any rating or controller type, are permitted on a single branch
circuit. Group Motor Installation has been successfully used for many years in the
USA and Canada.
Wiring and Workmanship Guidelines
In addition to conduit and seal-tite raceway, it is acceptable to utilize cable that is
dual rated Tray Cable, Type TC-ER and Cord, STOOW, for power and control
wiring on ArmorStart installations. In the USA and Canada installations, the
following guidance is outlined by the NEC and NFPA 79.
In industrial establishments where the conditions of maintenance and
supervision ensure that only qualified persons service the installation, and where
the exposed cable is continuously supported and protected against physical
damage using mechanical protection, such as struts, angles, or channels, Type TC
tray cable that complies with the crush and impact requirements of Type MC
(Metal Clad) cable and is identified for such use with the marking Type TC-ER
(Exposed Run)* shall be permitted between a cable tray and the utilization