3-18
DeviceNet Communications Cables Wiring Section 3-3
Parts, Installa-
tion, and Wiring
3-3-3 Insulation Blocks
As shown in the following diagram, each function block of the E5AR/E5ER-
DRT is electrically insulated.
The following are functionally insulated from each other: 1) each of the inputs,
2) event inputs, voltage outputs, and current outputs, and 3) communications.
The following are insulated from each other with basic insulation: 1) inputs,
event inputs, voltage outputs, current outputs, communications, 2) relay out-
put, and 3) transistor outputs.
If reinforced insulation is required, the input, event input, voltage output, cur-
rent output, and communications terminals must be connected to devices that
have no exposed chargeable parts and whose basic insulation is suitable for
the applicable maximum voltage of connected parts.
To comply with safety standards, always use an EN/IEC-compliant power
supply with reinforced insulation or double insulation for the DeviceNet power
supply.
Power supply
Input 1/potentiometer input
Reinforced insulation
Basic insulation
Functional insulation
Relay output
Transistor output
Input 2
Input 3
Input 4
Event inputs, voltage outputs,
current outputs
Communications
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