Publication 2100-IN012C-EN-P - April 2009 77
Final Check List Before Energizing Chapter 7
Refer to MCC Instantaneous Trip Motor Circuit Protectors (MCP)
in Combination NEMA Starter, Soft Starter (SMC), and Variable
Frequency AC Drive Units Technical Data,
publication
2100-TD001
, and MCC Inverse Time Circuit Breakers in
Combination NEMA Starter, Soft Starter (SMC), and Variable
Frequency AC Drive Units Technical Data,
2100-TD002 for circuit
breaker information in MCC units.
11. Refer to the device instruction sheets or manuals supplied with
the MCC for specific start-up guidance. Component devices in
MCC units such as transfer switches, PFCCs, transducers, motor
protectors, line monitors, over and under-voltage relays, and
motor windings heaters may require unique start-up procedures.
Set and verify adjustable current, voltage, and other settings,
according to device instructions or wiring diagrams.
Allen-Bradley AC drives and soft starter units are shipped with
preset factory settings such as ramp speed, current limits, switch
positions, and readouts. Preset factory settings may not be
suitable for many applications. Refer to instruction manuals,
supplied with the MCC for specific startup guidance.
12. Manually exercise all switches, control auxiliary switches, circuit
breakers, their respective operators, unit interlocks, trip
mechanisms (test by pushing the ‘Push to Trip’ button), and any
other operating mechanisms to verify proper operation.
13. Check timing relay settings as required.
14. Check the vents and fans.
a. Check all vents to ensure they are free from obstructions.
b. Check all fans, used for forced air cooling to ensure the shaft
rotates without obstructions.
c. Check that filters are in place and clean, and set up an
in-house program for scheduled cleaning or replacement.
IMPORTANT
High efficiency motors may have higher locked rotor and
inrush currents, therefore, higher magnetic trip settings
than those required equivalent standard motors may be
required.
ATTENTION
Verify that the parameters of configurable devices, such
as drives, soft starters, and overload relays, are suitable
for the specific application and change them as needed
for the specific application.
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