Chapter 2 Installation and commissioning
3 Insulation resistance measurement
The insulation resistance between circuits detected with magneto-ohmmeter
with an open-circuit voltage of 500V in accordance with table 1 shall not be
less than 100MΩ.
Group A: power circuit terminal 220V+ and 220V- (or 110V+ and 110V-) of
power terminal
Group B: Binary input and public terminal 13-16 of binary input/output
module terminal, 4 lines in total
Group C: binary input terminal 1-10 of binary input/output module terminal,
10 lines in total
Grounding: grounding terminal (enclosure)
Table 1 Insulation resistance detection circuit
Serial No. Detection circuit Terminal
1 Power circuit to grounding Group A to grounding
2 Binary output circuit to grounding Group B to grounding
3 Binary input circuit to grounding Group C to grounding
4 Power circuit to binary output circuit Group A to Group B
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