Yokogawa PC-Based MX100 - Manual (Page 81)

2-52
SM MX100-01E
2.11 Tests of the 10-CH, Medium-Speed Digital
Output Module (MX125-MKC-M10)
Tests
2.11.1 Insulation Resistance Test
2.11.2 Withstanding Voltage Test
2.11.3 Digital Output Voltage Test
Instruments Used
Instrument Standards, Recommended Products Etc.
MX100, MW100, or equivalent MX100 or MW100 Main Module
MX150 Base Plate
PC * That the software required for the test is installed
Insulation resistance tester DC500 V
Withstanding voltage tester AC 1 kV–3 kV
DMM M/7561 or equivalent
* Ensure that the module settings and measured values can be read in.
Cautions When Performing This Test
Connect to the PC only when performing the digital output test.
2.11.1 Insulation Resistance Test
For this test, the Ten-Channel, Medium-Speed Digital Output Module is installed with the
MX100, MW100, or equivalent device.
When installing the DO module onto the main unit, always fasten with screws.
Procedure
1. Wire the instruments as shown below then measure the insulation resistance.
Between output terminals
Ch1
Ch2
Ch3
Ch4
Ch5
Ch6
Ch7
Ch8
Ch9
Ch10
NO
C
N.C.
NO
C
N.C.
NO
C
N.C.
NO
C
N.C.
NO
C
N.C.
M M: Insulation resistance tester
Measure the insulation resistance between the wire shorting the NO and C
terminals of channels 1, 3, 5, 7, and 9, and the wire shorting the NO and C
terminals of channels 2, 4, 6, 8, and 10.
The N.C. terminals are not connected.