Rockwell Automation 1608M MegaDySC User Manual, 400 A - Manual (Page 12)

12 Rockwell Automation Publication 1608M-UM001A-EN-P - September 2013
Chapter 2 Installation
Instructions for energizing loads before commissioning
Figure 5 - Rear view of Automatic Bypass Switch board
If the MegaDySC system must
be installed and put into
maintenance bypass mode
before commissioning, the
installers should put the
system enclosures in place as
described on
page 10 , then
feed the loose ends of inter-
cabinet cables from the
switchboard into the
MegaDySC cabinet:
1. Route the INPUT
power cables (labeled
L1, L2, L3) through the
top bushing in the
right-side wall of the
switchboard, labeled
“Input to DySC”
2. Route the OUTPUT
power cables (X1, X2,
X3) and Ground cable through the bottom bushing labeled “Output from
DySC”
3. Route the control cable harness from the lower front switchboard pan into
the MegaDySC section through the matching holes in the lower front side
panels. Install the 3.5” snap-in grommet so that it protrudes into the
MegaDySC cabinet before routing the harness. Plug the harness header
into connector TB5 on the MegaDySC floor.
4. Lockout circuit breakers CBI and CBO in the Automatic Bypass
Switchboard.
5. Install utility input and load output conductors.
6. Energize the switchboard.
The MegaDySC touch screen display will be active only if the control
harness has been plugged in on the MegaDySC side. If the screen is active
then 120VAC is present at several points within the MegaDySC enclosure.
7. Push the green CLOSE CBB button to energize loads.
The remaining interconnections and commissioning must be completed
by factory-trained technicians.
WARNING: 120VAC is present at several pins of the harness header when the
switchboard is energized.