Users Manual

Table Of Contents
765-4102/0100-0000Connection
60 Product manual | Version: 2.1.0
8PORT IOL-B FLD PN DC 24V 2.0A
U = 2 × I × R
where:
U Voltage drop
2 Factor for feed and return lines
I Current
R
L
Line resistance
For WAGO 4× 1.5mm² supply cables, the cable resistance R
L
per wire R
L
<= 13.7Ω/km.
Example of Voltage Drop per Wire with a Current of 8A on the WAGO 4× 1.5 mm²
Supply Cable
U = 2 × 8A × 13.7Ω/km = 219.2V/km
This corresponds to a voltage drop of 2.19V per 10m of cable length.
Example of Voltage Drop per Wire with a Current of 16A on the WAGO 4× 2.5 mm²
Supply Cable
U = 2 × 16A × 8.22Ω/km = 263V/km
This corresponds to a voltage drop of 4.38V per 10m of cable length.
If the resistance of the cable used is not known, it can be calculated approximately with
the following formula:
R
L
= l / (K × A)
where:
R
L
Line resistance
I Cable length
K Kappa (electrical conductivity of copper)
A Cable cross-section
9.3 Connecting Cables
WAGO recommends using 765 Series connecting cables, pluggable connectors and ac-
cessories for 756 Series products, which have been tailored specifically to the WAGO I/O
System Field.
The tightening torques given in section 8Connection Technology [}18] apply to the
pluggable connectors of the connecting cables.
9.4 Connecting Fieldbus
To establish a connection to an IO controller, connect the product to a network with a
transmission rate of 100Mbit/s in full duplex operation.
You can find the connection assignment for the ETHERNET ports in section 8ETHER-
NET Interfaces [}17].
If you do not use a pre-assembled ETHERNET cable, a shielded M12 plug with protec-
tion type IP 67 should be connected to it.