Bulletin 150 SMC-Flex™
ii
Chapter 2
Installation
Receiving .......................................................................................2-1
Unpacking ......................................................................................2-1
Inspecting ......................................................................................2-1
Storing ...........................................................................................2-1
General Precautions .......................................................................2-2
Heat Dissipation .............................................................................2-2
Enclosures .....................................................................................2-2
Enclosures ..............................................................................2-3
Mounting .......................................................................................2-4
Dimensions ....................................................................................2-4
Power Factor Correction Capacitors ................................................2-8
Protective Modules .........................................................................2-9
Motor Overload Protection ..............................................................2-9
Two-speed Motors ..................................................................2-9
Multi-motor Protection ............................................................2-9
Electromagnetic Compatibility (EMC) ............................................2-10
Enclosure ..............................................................................2-10
Wiring ...................................................................................2-10
Recommendations ................................................................2-10
Chapter 3
Wiring
Terminal Locations .........................................................................3-1
Power Structure .............................................................................3-2
Power Wiring ...........................................................................3-3
Control Power ................................................................................3-4
Control Voltage ........................................................................3-4
Control Wiring .........................................................................3-5
Fan Power ......................................................................................3-5
Fan Terminations ....................................................................3-5
Control Terminal Designations ........................................................3-6
Wiring Diagrams ............................................................................3-7
Standard Controller ..................................................................3-7
Soft Stop, Pump Control, and SMB Smart Motor Braking .......3-21
Preset Slow Speed ................................................................3-25
Slow Speed with Braking .......................................................3-27
Sequence of Operation..................................................................3-28
Soft Stop ...............................................................................3-28
Preset Slow Speed ................................................................3-29
Pump Control ........................................................................3-30
SMB Smart Motor Braking Option ..........................................3-31
Accu-Stop .............................................................................3-32
Slow Speed with Braking .......................................................3-33
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