Rockwell Automation SA3100 Diag,Troublesht,Startup,Guide - Manual (Page 40)

4-8 Diagnostics, Troubleshooting, and Start-Up Guidelines
4.7.6 Testing AC Input Power Modules with AC Power On
All input voltages should be checked prior to applying any voltage to the drive. Check
all line-to-line voltages (V
LL
) and line-to-ground voltages (V
LN
). All line-to-line voltages
should be equal within +/-5%.
Note:
The following steps are required to test AC Input Power Modules before they can be
put into service.
Step 1. Check AC power levels.
a. Verify that AC input power to the drive is off.
b. Connect a voltmeter to terminals R (L1) and S (L2) on the Power Module.
See Appendix I for terminal identification.
c. Apply power to the drive and verify the AC voltage level.
d. Repeat the previous steps with the voltmeter connected to terminals
R (L1) and T (L3) and then to terminals S (L2) and T (L3).
e. Repeat the checks with the voltmeter connected to terminals R (L1) and
ground, S (L2) and ground, and T (L3) and ground.
Step 2. If the motor uses 3-phase AC to power its blower motor, verify proper blower
motor rotation. Check to see that air is being forced into the motor. If air flow
is reversed (air is being pulled out of the motor), remove AC input power from
the blower motor and interchange any two AC line power wires feeding the
blower motor. Note that the blower motor must be wired to a fixed AC power
source and not to the drive.
!
ATTENTION:Only qualified personnel familiar with the construction and
operation of this equipment and the hazards involved should install,
adjust, operate, or service this equipment. Read and understand this
manual and other applicable manuals in their entirety before proceeding.
Failure to observe this precaution could result in severe bodily injury or
loss of life.
ATTENTION:This procedure is performed with power on. Exercise
extreme caution as hazardous voltage exists. Failure to observe this
precaution could result in severe bodily injury or loss of life.
ATTENTION:Before proceeding, make sure that you can quickly stop
the drive if necessary. If the input power disconnect and/or stop
push-button are out of your reach, have an associate stationed to operate
them in the event of drive malfunction during these initial power checks
and drive adjustment. Failure to observe this precaution could result in
damage to equipment and bodily injury.
V
L N
3 V •
LL
=