Allen-Bradley 1391B Series, Instruction Manual

Page: 43 / 82

Installation
Chapter 6
6-41
Grounding requirements, conventions and definitions are contained in the
National Electrical Code. Local codes will usually dictate what particular
rules and regulations are to be followed concerning system safety grounds.
See Appendix B.
Wiring
ATTENTION: The National Electrical Code (NEC) and local
codes outline provisions for safely installing electrical
equipment. Installation must comply with specifications
regarding wire types, conductor sizes, branch circuit protection,
and disconnect devices. Failure to do so may result in personal
injury and/or equipment damage.
!
The Interconnect Drawing presented in Appendix B provides typical
interconnection wiring for the 1391B-ES AC Servo Controller. Typical
control logic circuitry (starting and stopping), motor interconnections and
grounding techniques are shown.
Motor Wiring
The motor wiring size is determined by the continuous and overload
current requirements (RMS Duty Cycle), NEC and local codes. In general,
motors operated from the following controllers would not require wire
sizes larger than those accepted by TB5, but codes must be followed. In
addition, the motor leads must be twisted throughout their entire length to
minimize radiated electrical noise. Allen-Bradley 1326 cables must be
used. The maximum motor wire sizes that the 1391B-ES controller will
accept are shown in Table 6.A.
Table 6.A
Maximum Motor Wire Sizes (TB5)
Controller Catalog
Number
1391B-ESAA15
1391B-ESAA22
1391B-ESAA45
Max. Wire Size
Accepted
#8 AWG (8.4 mm
2
) –
MTW
#8 AWG (8.4 mm
2
) –
MTW
#8 AWG (8.4 mm
2
) –
MTW