Rockwell Automation 20D DC SCR Precharge Module - Manual (Page 8)

P-2 Overview
Manual Conventions The following words are used throughout the manual to describe an action:
General Precautions
Word Meaning
Can Possible, able to do something
Cannot Not possible, not able to do something
May Permitted, allowed
Must Unavoidable, you must do this
Shall Required and necessary
Should Recommended
Should Not Not recommended
!
ATTENTION: The DC SCR Precharge Module contains ESD
(Electrostatic Discharge) sensitive parts and assemblies. Static
control precautions are required when installing, testing, servicing
or repairing this Module. Component damage may result if ESD
control procedures are not followed. If you are not familiar with
static control procedures, refer to Allen-Bradley publication
8000-4.5.2, “Guarding Against Electrostatic Damage” or any
other applicable ESD protection handbook.
!
ATTENTION: An incorrectly applied or installed DC SCR
Precharge Module can result in component damage or a reduction
in product life. Wiring or application errors, such as incorrect or
inadequate DC supply, or excessive ambient temperatures may
result in malfunction of the system.
!
ATTENTION: Only qualified personnel familiar with adjustable
frequency AC drives and associated machinery should plan or
implement the installation, start-up, and subsequent maintenance
of the system. Failure to comply may result in personal injury and/
or equipment damage.
!
ATTENTION: Only connect Allen-Bradley “Common Bus” AC
drives with this DC SCR Precharge Module. Failure to comply
may result in personal injury and/or equipment damage.
!
ATTENTION: To avoid an electric shock hazard, verify that the
voltage on the DC bus terminals (which are connected to the DC
bus capacitors of the drive) has discharged before performing any
work on the DC SCR Precharge Module. Measure the DC bus
voltage between the “+DC” and “-DC” terminal of the Output
Power Terminals. The voltage must be zero.
!
ATTENTION: A second source of power for the cooling fan and
control is present. To avoid an electric shock hazard or moving
blades, verify that the AC power supply has been removed before
performing any maintenance or repairs.