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Rockwell Automation Publication 20P-TG004C-EN-P - September 2021
23
Component Test Procedures
Chapter 2
•
If any of the voltage measurements above are incorrect or missing,
continue with step 5 below.
•
If the voltage measurements above are correct but the value of
parameter 466 [AC Line Voltage] is incorrect, replace the control
board.
5.
Remove the ribbon cable connected to XR on the control board and pulse
transformer board and test the continuity of the cable using the
measurements in
on page
.
If the measurements on the XR cable are correct, replace the pulse transformer
board.
Troubleshoot an Armature
Bridge Failure
If the drive is running unstable or faults with an Overcurrent Fault (F13) an
armature bridge failure may have occurred. All of the signals going to and coming
from the SCR bridges are transmitted via the ribbon cable connected to XR on
the control board and can be measured at these points. See
on page
for location of the XR connector on the control board.
1.
Read the General Safety Precautions on page
.
2.
Remove the bottom control panel and I/O and control terminal covers
from the drive. See Protective Cover Removal and Installation on page
3.
If using a DC output contactor, disconnect the cable from XR on the
control board and measure the signal for each SCR gate as indicated in the
table below:
IMPORTANT
These checks cannot be completed with an AC contactor in use.
Signal Name
XR Cable Pin
Gate
Note
MP
MN
IT1
27
G1
G04
IT2
29
G2
G05
IT3
31
G3
G06
IT4
21
G4
G01
IT5
23
G5
G02
IT6
25
G6
G03
MN
33
–
–
Negative bridge MN - active when high (+5V)
MP
34
–
–
Positive bridge MP - active when high (+5V)
Содержание Allen-Bradley PowerFlex 20P
Страница 1: ...PowerFlex Digital DC Drive Frame D Bulletin Number 20P Hardware Service Manual Original Instructions ...
Страница 8: ...8 Rockwell Automation Publication 20P TG004C EN P September 2021 Preface Notes ...
Страница 42: ...42 Rockwell Automation Publication 20P TG004C EN P September 2021 Chapter 2 ComponentTest Procedures Notes ...
Страница 108: ...108 Rockwell Automation Publication 20P TG004C EN P September 2021 Chapter 3 Access Procedures Notes ...
Страница 136: ...136 Rockwell Automation Publication 20P TG004C EN P September 2021 Appendix D History of Changes Notes ...
Страница 140: ...140 Rockwell Automation Publication 20P TG004C EN P September 2021 Index Notes ...