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4.7 Wiring of the FPΣ-FNS Unit
The FP-FNS unit has a spring-cage connection type (2-pin) or screw (3-pin) terminal block on
its lower side to connect to function earth. As the pins are internally bridged, one of the pins
should be connected to function earth for proper EMC behaviour. Use the following items for
wiring.
Accessory terminal block
If additional connectors are needed, use the connector manufactured by Phoenix Contact.
No. of contacts
2
3
Suitable wire for spring-cage connection type terminal (2-pin)
No. of wires
1
Suitable wire for screw terminal (3-pin)
No. of wires
1
Either fixed or flexible wires can be used to connect the function earth.
Wiring method for the spring-cage connection type
Fixed wires with a diameter>0.2mm² and flexible wires with a wire end ferrule can be plugged
in the clamp. When using smaller diameters or flexible wires without a ferrule, you must push
the orange opening lever to plug in the wire.
When removing the wire's insulation, be careful not to scratch the core wire.
Do not twist the wires to connect them.
Do not solder the wires to connect them. The solder may break from
vibrations.
Phoenix Contact Model no.
FK-MC 0.5/2-ST-2.5
MC 1,5/ 3-ST-3,5
Size
AWG 26-20
Size
AWG 28-16
Wiring of the FPΣ-FNS Unit
Phoenix Contact Product no.
18 81 32 5
18 40 37 9
Cross-sectional area
0.14-0.5mm²
Cross-sectional area
0.14-1.5mm²
45
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