80459-641-01E Model 6 Motor Control Centers
10/2012 Section 9—iMCC
© 1999–2012 Schneider Electric All Rights Reserved
81
ENGLISH
iMCC Communications
Before energizing the equipment, check the items below to verify that the
iMCC networking and cabling are set up and connected properly.
Cabling Connections
• Verify that the network length without a repeater is less than 1500 feet
(457 m).
• Verify that the MCC cables are connected between shipping splits. See
“Cables Between Shipping Splits” on page 76 for instructions.
• Verify that each device tap cable is properly connected to the main
trunk line.
• Verify that all network connections are secure.
• Verify that terminating resistors are installed as required per network
protocol.
Communications Setup
• Verify that all devices have been assigned correct addresses; see
“Device Addressing” on page 91 for specific addressing parameters.
Energizing the MCC
To energize the MCC:
1. Review the “Pre-operation Checklists” on page 80 before energizing.
2. Turn off all downstream loads, including distribution equipment and
other devices that are remote from the MCC.
3. Verify that all barriers, doors, and covers are closed before energizing
the equipment.
4. Energize the equipment in sequence, starting with the main devices, the
feeder devices next, and then the motor starter devices.
5. With all barriers in place and all unit doors closed and latched, turn on
the devices with a firm, positive motion.
6. After all disconnect devices are closed, you may energize loads such as
lighting circuits, starters, contactors, heaters, and motors.
NOTIC
HAZARD OF EQUIPMENT DAMAGE
Do not use excessive force when making
cabling connections. Connections are keyed to
ensure that pins are properly aligned.
Failure to follow this instruction can result
in equipment damage.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must only be installed and serviced by qualified
electrical personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is
off.
• Replace all devices, doors, and covers before turning on power to this
equipment.
• Review the “Pre-operation Checklists” beginning on page 80, and verify
that all items check out.
Failure to follow this instruction will result in death or serious injury.
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