IFM Electronic NAMUR NS Serie Instrucciones De Servicio página 12

ENGLISH
• Connection only to intrinsically safe certified circuits or evaluation amplifiers
which do not exceed the following maximum values of the units:
• Permissible operating temperature of the application (referred to the
maximum permissible power of 120 mW):
-20...+60°C
-20...+70°C
-20...+70°C
-20...+70°C
• Maximum effective internal inductance (Li) and capacitance (Ci):
The values apply to potted cables.
Article no.
NS5003
NS5009
NS****)
Articles with cable / units with cable
NS****) For cable units with potted different cable lengths the values of the
cable must be taken into account. The values (calculation formula) apply to
potted cables of a max. length of up to 50 m:
0.6 µH (Li) / 140 pF (Ci) per metre of potted cable.
*1) Thus the maximum effective internal inductance of the unit results in:
Li = 110 µH + cable length in (m) × 0.6 µH.
*2) Thus the maximum effective internal capacitance of the unit results in:
Ci = 80 nF + cable length in (m) × 0.14 nF.
6
I
U = 15 V,
i
1G
1G
2G
1D
Cable Internal inductance
length
2 m
0.1m
xx m
= 50 mA, P = 120 mW
i i
IIB
IIB
IIC
(total) in µH
110
110
*1)
GB
T6
T5
T6
90°C
Internal capacitance
(total) in nF
80
80
*2)
IRL