20 MicroLogix™ 1500 Programmable Controller Base Units
Publication 1764-IN001A-ML-P
Specification 1764-28BXB
Input Group to Backplane Isolation and
Input Group to Input Group Isolation
Verified by one of the following dielectric tests: 1200V
ac for 1 second or 1697V dc for 1 second
75V dc Working Voltage (IEC Class 2 reinforced
insulation)
FET Output Group to Backplane Isolation
and FET Outputs Group to Group
Verified by one of the following dielectric tests: 1200V
ac for 1 second or 1697V dc for 1 second
75V dc Working Voltage (IEC Class 2 reinforced
insulation)
Relay Output Group to Backplane
Isolation
Verified by one of the following dielectric tests: 1836V
ac for 1 second or 2596V dc for 1 second
265V Working Voltage (IEC Class 2 reinforced
insulation)
Relay Output Group to Relay and FET
Output Group Isolation
Verified by one of the following dielectric tests: 1836V
ac for 1 second or 2596V dc for 1 second
265V Working Voltage (basic insulation) 150V Working
Voltage (IEC Class 2 reinforced insulation)
Table 13 Working Voltage
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