Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 52)

42 Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013
Chapter 2 Installation
Each power feeder from the substation transformer to the controller must be
equipped with properly sized ground cables. Simply utilizing the conduit or cable
armor as a ground is not adequate. The conduit or cable armor and ground wires
should be bonded to ground at both ends. Each enclosure and/or frame must be
bonded to ground at a minimum of two locations.
Each AC motor frame must be bonded to grounded building steel within 6.1 m
(20 feet) of its location and tied to the controller’s ground bus by ground wires
within the power cables and/or conduit. The conduit or cable armor should be
bonded to ground at both ends.
Recommended Torque
Values When reinstalling components or when reassembling the cabinet, tighten the
following bolt sizes to the specified torque values:
Power Connections The controller requires a three-phase supply and an equipment grounding
conductor to earth ground. A neutral conductor of the three-phase supply is not
necessary and is usually not routed to the controller. Three-phase wiring will
connect the controller to the motor.
Bulletin 1562E
The Bulletin 1562E unit is available in two main configurations:
1. A modified two-high cabinet (180/360A, 2400 to 4160V)
2. A combination of a one-high full voltage non-reversing (FVNR) cabinet
and a 1560E unit (600A, 2400 to 4160V, and 180/360/600A, 5500 to
6900V)
ATTENTION: Any instruments used for test or troubleshooting should have
their case connected to ground for safety. Failure to do so may result in damage
to equipment or personal injury.
Hardware Recommended Torque
1/4 in. (M6) 8 N-m (6 lb-ft)
5/16 in. (M8) 15 N-m (11 lb-ft)
3/8 in. (M10) 27 N-m (20 lb-ft)
1/2 in. (M12) 65 N-m (48 lb-ft)
Control Wire Terminals 2.5 - 4.0 N-m (2.0 - 3.3 lb-in)
CLGD Power Assembly Terminals 5.6 N-m (50 lb-in)
SMC Flex Control Module Terminals 0.6 N-m (5 lb-in)
TIP For 3/8 in. hardware in the “T”-slots of aluminum heatsinks, the recommended
torque is 22 N-m (16 lb-ft). Do not overtorque these connections as the slots
will be damaged and the connection will be compromised.