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ICRL-U-8M12-G60 Manual
Safety Instructions
1.9. Requirements For Connecting Electrical Wires
Before connecting the electrical wires, always verify that the requirements listed are complied with.
1.9.1. General Requirements for Connecting Electrical Wires
The following requirements apply without restrictions:
•
The electrical wires are not connected to a power source.
•
The cables used are permitted for the temperature range of the application case.
•
Ground the device via the ground screw. Disconnect the grounding only after disconnecting all other
cables.
•
Exclusively use 60/75 °C (140/167 °F) or 75 °C (167 °F) copper (Cu) wire.
•
The power supply cable to be connected is suitable for ambient air temperature of at least 212 °F (100 °C).
•
The power supply complies with the requirements for a safety extra-low voltage (SELV) as per IEC/EN
60950-1.
1.9.2. Requirements for Connecting the Supply Voltage
The following requirements apply without restrictions:
All of the following requirements are complied with:
•
The supply voltage corresponds to the voltage specified on the type plate of the device.
•
The power supply conforms to over-voltage category I or II.
•
The power supply has an easily accessible disconnecting device (for example a switch or a plug). This
disconnecting device is clearly identified. So in the case of an emergency, it is clear which disconnecting
device belongs to which power supply cable.
•
The power supply cable is suitable for the voltage, the current and the physical load. Pepperl+Fuchs
recommends a wire diameter of 0.5 mm² to 0.75 mm² (AWG20 up to AWG18).
The following requirements apply alternatively.
Relevant when the device is supplied via 1 voltage input
Alternative
The power supply complies with the requirements for a limited power source (LPS) as per EN
1
60950-1.
Alternative
Relevant for North America: The power supply complies with the requirements according to NEC
2
Class 2.
All of the following requirements are complied with:The power supply complies with the
requirements for a safety extra-low voltage (SELV) as per IEC/EN 60950-1.
Install a fuse suitable for DC voltage in the plus conductor of the power supply.
Alternative
3
Connect the minus conductor to the ground potential. If the minus conductor is not connected to
the ground potential, also install an external fuse in the minus conductor.
See the notes below.
Relevant when the device is supplied via 2 voltage inputs
Alternative
The total voltage supply meets the requirements for a limited power source (LPS) as per EN
1
60950-1.
Requirements for Connecting the Supply Voltage
7
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