Technical data
At the (+) and (-) connections of the auxiliary energy (supply / signal circuit)
the device has to be supplied with a certified intrinsically safe Ex ib IIC circuit
or with a certified intrinsically safe EEx ia IIC circuit with the following
maximum values:
Maximum input voltage U
i
28 V
Maximum input current I
i
105 mA
Maximum input power P
i
1,0 W
The maximum internal capacity and inductance including a cable of up to 15
m are as follows:
Maximum internal capacity C
i
12 nF
Maximum internal inductance L
i
0,2 mH
Note 1: The internal capacity between the intrinsically safe supply /signal
circuit and the housing is 12 nF. Any potential differences between the
intrinsically safe supply /signal circuit and the housing have to be avoided. If
required, the installation location of the device and / or the device as well as
the environment of the cable routing have to be integrated in the potential
compensation.
Note 2: The mentioned values are safety-related maximum values. The
operating values / nominal values for tension are U
H
= DC 12 V ... DC 24 V
and for maximal current consumption = 25 mA.
1) The details on the maximum surface temperature on the rating plate are based on measurements under
normal ambient and installation conditions. Changes of these conditions (e.g. constricted conditions of
installation) may have considerable effects on the temperature.
2) see also EN 50281-1-2
3) see also EN 60079-14
4) male / female connector of the connection assembly (auxiliary energy)
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