Omron RX - 2, Руководство пользователя

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13 Maintenance and Inspection
13 - 10 High-function General-purpose Inverter RX2 Series User’s Manual
Using a tester, you can check the condition of inverter and converter if it is good or bad.
(preparation)
1
Remove the power lines connected from an external source (R, S, T), wires connecting to the
motor (U, V, W), and regenerative braking resistor (P, RB).
2
Prepare a tester. (The range used is 1Ω resistance measurement range.)
(Checking method)
*1
You can determine the good-or-bad condition of conduction status of terminals on the inverter main cir-
cuit terminal block R, S, T, U, V, W, RB, P, and N by alternately changing the polarity of tester for mea-
surement.
*1. By measuring the voltage between P and N in the DC voltage range, check that electricity is fully discharged
from the smoothing capacitor before performing check.
13-5-3 Checking Method of Inverter and Converter
Tester polarity
Measured
value
*1
*1. When electricity is not conducted, a nearly infinite value is demonstrated. Due to effects of the smoothing ca-
pacitor, electricity may be conducted instantly, not showing an infinite value. When electricity is conducted, a
numeric value range will be indicated from some to dozens in a unit of Ω. The values vary depending on the
element type, tester, type, etc. However, it is acceptable if numeric values obtained for each item are nearly
the same. The measured value may be varied some degree in Ω by the reason of the preventing inrush current
of current limiting resistor.
(Red) (Black)
Converter
D1
R PD Non-conductive
PD R Conductive
D2
S PD Non-conductive
PD S Conductive
D3
T PD Non-conductive
PD T Conductive
D4
R N Conductive
N R Non-conductive
D5
S N Conductive
N S Non-conductive
D6
T N Conductive
N T Non-conductive
Inverter
TR1
U P Non-conductive
P U Conductive
TR2
V P Non-conductive
P V Conductive
TR3
W P Non-conductive
P W Conductive
TR4
U N Conductive
N U Non-conductive
TR5
V N Conductive
N V Non-conductive
TR6
W N Conductive
N W Non-conductive
BRD TR7
RB P Non-conductive
P RB Conductive
RB N Non-conductive