Wiring
Operating Manual PSEN sg2c-5CCLLE
1004172-EN-02
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5.2
Recommended cable cross sections
The values in the table are valid for a series connection with max. 3 sensors and a voltage
for solenoid operation of 24 V. The solenoid current is 1.5 A per solenoid.
For differing values the conductor cross section must be calculated.
Total cable run [m] 1 safety switches
2 safety switches
3 safety switches
5
0.25 mm
2
, AWG24
0.25 mm
2
, AWG24
0.5 mm
2
, AWG21
10
0.25 mm
2
, AWG24
0.25 mm
2
, AWG24
0.5 mm
2
, AWG21
15
0.25 mm
2
, AWG24
0.25 mm
2
, AWG24
0.5 mm
2
, AWG21
20
0.25 mm
2
, AWG24
0.5 mm
2
, AWG21
x
25
0.25 mm
2
, AWG24
0.5 mm
2
, AWG21
x
30
0.25 mm
2
, AWG24
x
x
40
0.5 mm
2
, AWG21
x
x
50
0.5 mm
2
, AWG21
x
x
60
0.5 mm
2
, AWG21
x
x
70
x
x
x
Cable runs marked with an x are not recommended.
For operating several safety switches with greater cable runs, the cables for solenoid oper-
ation (terminals X1-6 and X1-7) have to be carried individually, or several cables have to be
used. If more than three safety switches are connected in series or cable runs over 60 m
are required, please contact Pilz.
The permitted conductor cross section is at least 0.25 mm². To have a higher conductor
cross section, two cable cores can be inserted into a terminal. This adds together the con-
ductor cross sections and halves the cable resistances. In this case, use a terminal lug! The
signals important for cable resistance are:
}
24 V (X1-1 or X2-1)
}
0 V (X1-2 or X2-2)
}
the two solenoid operation signals (X1-6 and X1-7 or X2-6 and X2-7).
5.3
General wiring guidelines
Please note:
}
All metallic surfaces on the safety switch are connected to 0 V via a resistor (100 kOhm)
for functional earthing.
}
UL requirements:
– Use copper wiring with a temperature stability of 75 °C.
– Use an LVLC supply (LVLC: limited voltage, limited current).
– Use multicore cable with a cable diameter of 6 ... 10 mm.
}
When 2 cables are used, make sure that both cables have the same cable diameter, oth-
erwise the strain relief will fail.
}
The permitted conductor cross section for the connectors is 0.25 - 1.0 mm², 23 - 17 AWG.
