Manual

2-25
SM MX100-01E
Testing
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7
2.7 Tests of the 4-CH Strain Input Module
Tests
2.7.1 Insulation Resistance Test
2.7.2 Withstanding Voltage Test
2.7.3 Excessive Input Test
2.7.4 ID Check
2.7.5 Bridge Voltage Accuracy Test
2.7.6 Measurement accuracy
2.7.7 Between-Channel Error Test
2.7.8 Initial Balance Error Test
2.7.9 Dip Switch Operation Test
Test Instruments
The following instruments are used for testing.
Instrument Standard Typical Model
MX main unit or equivalent
jig
MX100 or MW100 Main Module
MX150 Base Plate
PC That the software required for the test
is installed
Strain Cal Box B8720XA or equivalent Yokogawa B8720XA
DC voltage generator DCV ±10 V DC power
Insulation resistance tester DC500 V TOS9201 (Kikusui)
Withstanding voltage tester AC 2 kV–4 kV TOS9201 (Kikusui)
Tester A device capable of performing the
continuity tests (measured voltage of
42 V or less)
-
Waveform measuring
instrument
100 kS/s, 8-bit or more YOKOGAWA DL1640, OR, or
equivalent
Ethernet cable
Module Settings
Enter the following settings unless otheriwse indicated.
Measurement interval 200 ms
Filters 0 (OFF)
2.7.1 Insulation Resistance Test
Perform the withstanding voltage test before performing this test.
Wire the instrument as shown in the figure below, measure insulation resistance, then
confirm that the results meet the criteria below.
Measured Item Criteria
Input terminal to earth terminal on the MX100,
MW100, or equivalent
20 MΩ or more (at DCV 500 V)
Between input terminals 10 MΩ or more (at DCV 42 V or less)
Connector shell to the ground terminal on the
MX100 or equivalent
5 or less