30 Kollmorgen - December 2011
MMC Smart Drive Hardware Manual - INSTALLING THE MMC SMART DRIVE
3.12.2 Building Your Own Cables
• Connect the cable shield to the connector shells on both ends of the cable for a
complete 360 degree connection.
• Use a twisted pair cable whenever possible, twisting differential signals with each
other, and single-ended signals with the appropriate ground return.
3.12.3 Routing Cables
Guidelines for routing cables in a cabinet include the following:
• Always route power and control cables separately.
• Do not run high and low voltage wires/cable in the same wireway.
• Cross high and low voltage conductors at 90 degree angles.
• On parallel cable runs, maximize the distance between high and low voltage
cables.
• Maintain the least amount of unshielded cable leads.
3.13 Wiring the Drive
These procedures assume you have bonded and mounted your MMC Smart Drive to
the subpanel and that there is no power applied to the system.
3.13.1 Sizing the 24V Power Supply
When you size your power supply, you must ensure that the supply is large enough to
handle the total load. Refer to the specification tables for the +24VDC input power
requirements.
In most cases, one power supply can be used for an entire control system. However,
depending upon the drives and external I/O used in the application, the power
distribution may be split into two or more power supplies.
Use of switches in series with the 24VDC power input is not recommended. The drive
contains energy storage capacitors at the inputs. While no harm is done to the drive,
this much capacitance across the 24VDC source may cause voltage dips when the
switch in series with the 24VDC power is closed.
NOTE
Kollmorgen cables are designed to minimize EMI and are recommended
over hand-built cables.
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