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Inspection items
5.1.4 Checking the converter module
<Preparation>
(1) Disconnect the external power supply cables (R4/L14, S4/L24, T4/L34, P/+, N/-)
(2) Prepare a tester. (Use 100 range.)
<Checking method>
Change the polarity of the tester alternately at the converter terminals R4/L14, S4/L24, T4/L34, P/+, N/- and check the electric
continuity.
(3) <Module device numbers and terminals to be checked>
5.1.5 Cleaning
Always run the converter in a clean status.
When cleaning the converter, gently wipe dirty areas with a soft cloth immersed in neutral detergent.
NOTE
Before measurement, check that the smoothing capacitor is discharged.
At the time of electric discontinuity, the measured value is almost . When there is an instantaneous electric
continuity, due to the smoothing capacitor, the tester may not indicate . At the time of electric continuity, the
measured value is several to several tens of . If all measured values are almost the same, although these values
are not constant depending on the module type and tester type, the modules are without fault.
NOTE
Do not use solvent, such as acetone, benzene, toluene and alcohol, as they will cause the surface paint of the converter
to peel off.
The display, etc. of the operation panel and parameter unit are vulnerable to detergent and alcohol. Therefore, avoid
using them for cleaning.
TR1 TR2 TR3
TR4 TR5
TR6
R4/L14
S4/L24
T4/L34
C
P/+
N/-
(Assumes the use of an analog meter.)
Converter
module
Tester Polarity Measured
Value
TR1
R4/L14 P Discontinuity
P R4/L14 Continuity
TR2
S4/L24 P Discontinuity
P S4/L24 Continuity
TR3
T4/L34 P Discontinuity
P T4/L34 Continuity
TR4
R4/L14 N Continuity
N R4/L14 Discontinuity
TR5
S4/L24 N Continuity
N S4/L24 Discontinuity
TR6
T4/L34 N Continuity
N T4/L34 Discontinuity
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