Installation SPIDER-PL
Release 03 08/2016
7
Requirements for connecting electrical wires
Before connecting the electrical wires,
always
verify that the
requirements listed are complied with.
General requirements for connecting electrical wires
The following requirements apply without restrictions:
The electrical wires are voltage-free.
The cables used are permitted for the temperature range of the application case.
Relevant for North America:
Use 60/75 or 75 °C copper (Cu) wire only.
Requirements for connecting the signal contact
The following requirements apply without restrictions:
The voltage connected complies with the requirements for a safety extra-low voltage
(SELV) as per IEC/EN 60950-1.
The connected voltage is limited by a current limitation device or a fuse.
Observe the electrical threshold values for the signal contact.
See “General technical data” on page 38.
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 overvoltage category I or II.
The power supply has an easily accessible disconnecting device (e.g., 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.
Hirschmann 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 1
The power supply complies with the requirements for a limited power source
(LPS) as per EN 60950-1.
Alternative 2
Relevant for North America:
The power supply complies with the requirements as per NEC Class 2
Alternative 3
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.
Supply with DC voltage:
A fuse suitable for DC voltage is located in the plus conductor of the power
supply.
The minus conductor is on ground potential. Otherwise, a fuse is also
located in the minus conductor.
Regarding the properties of this fuse:
See “General technical data” on page 38.
Supply with AC voltage:
A fuse is located in the outer conductor of the power supply.
The neutral conductor is on ground potential at both voltage inputs.
Otherwise, a fuse is also located in the neutral conductor.
Regarding the properties of this fuse:
See “General technical data” on page 38.
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