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Rockwell Automation Publication 20P-TG003B-EN-P - September 2021
Chapter 2
Component Test Procedures
7.
Check the anode to cathode junction of the field SCR/dual diode module.
With the digital multimeter set to “diode test”, measure the resistance
across the modules. See
and
below.
If a low resistance is detected, replace the modules. See
Dual Diode Module Removal and Installation on page 72
.
If a measurement results in an “infinity” reading, check the fuses at FU1
and FV1 on the control panel to determine if they are open. See
Table 10 - Field SCR/Dual Diode Module Anode to Cathode Junction Measurements
Figure 10 - Field Terminal Block Location
(+) Meter Lead
(-) Meter Lead
Nominal meter reading:
Terminal
Terminal
U1
C1
0.45V
U1
D1
open or infinity
V1
C1
open or infinity
V1
D1
open or infinity
C1
D1
open or infinity
C1
U1
open or infinity
C1
V1
open or infinity
D1
C1
0.9V
D1
U1
0.45V
D1
V1
open or infinity
V1
U1
C1
D1
W phase - AC input terminal
Содержание Allen-Bradley PowerFlex 4M
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Страница 8: ...8 Rockwell Automation Publication 20P TG003B EN P September 2021 Preface Notes ...
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