Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 59)

Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013 49
Installation Chapter 2
Bulletin 1503E
For 1503E, refer to applicable documentation from OEM for installation,
grounding, interlocking and wiring. This manual should be utilized in
conjunction with the OEM supplied documentation, and is suitable for
commissioning, programming, calibration, metering, serial communications,
diagnostics, troubleshooting and maintenance of a standard solid-state controller.
Power Wiring The wire sizes must be selected individually, observing all applicable safety and
CEC or NEC regulations. The minimum permissible wire size does not
necessarily result in the best operating economy. The minimum recommended
size for the wires between the controller and the motor is the same as that used if
a main voltage source connection to the motor was used. The distance between
the controller and motor may affect the size of the conductors used.
Consult the wiring diagrams and appropriate CEC or NEC regulations to
determine correct power wiring. If assistance is needed, contact your area
Rockwell Automation Sales Office.
Interlocking Hinged doors and panels, which provide access to medium voltage components,
must be mechanically interlocked to ensure circuit isolation. If a combination
MV SMC Flex (1562E) is purchased from Rockwell Automation, all medium
voltage compartments will be mechanically interlocked such that they cannot be
opened unless the isolating switch for the unit is open. Each medium voltage
door is interlocked to the isolating switch handle. To open the doors, move the
isolating switch to the OFF position and loosen the two retaining bolts on the
main power cell door. Once this door is open, the other doors may be opened in
sequence, depending on the specific interlock scheme provided. The retrofit-type
MV SMC Flex (1560E) is intended to be added to an existing motor controller,
and has no isolating means included.
IMPORTANT For retrofit units (Bul. 1560E), the CEC and NEC require that branch-circuit
protection of the AC line input to the controller be provided by a circuit breaker
or motor starter. This function is included with a Bulletin 1562E.
IMPORTANT The control and signal wires should be positioned at least six (6) inches
(150 mm) from power cables. Additional noise suppression practices (including
separate steel conduits for signal leads, etc.) are recommended.
ATTENTION: For 1503E and 1560E, it is the responsibility of the installer/user to
ensure the equipment interlocking scheme is in place and functional before
energizing the equipment. Inadequate interlocking could expose personnel to
energized parts which could result in severe burns, injury or death.