Ex relevant specifications for operation in Div. 1
24 - EN
FEX300, FEX500
SM/FEX300/FEX500/FM/CSA-EN
5.2.2 Devices with PROFIBUS PA or FOUNDATION fieldbus
When operating in potentially explosive areas, observe the following electrical data for the signal inputs and outputs of the transmitter. For the
correct design (PROFIBUS PA or FOUNDATION fieldbus), see the marking contained in the device's terminal box.
For devices in Zone 1 / Div. 1 the bus termination must conform to the FISCO model or the explosion protection regulations, respectively.
For devices in Zone 2 / Div. 2 the bus termination must conform to the FNICO model or the explosion protection regulations, respectively.
Model: FEP315, FEH315 / FEP515, FEH515 or FET325 / FET525
The fieldbus and the digital output can be connected in zone 1 / Div. 1 in three different variants.
Variant 1: Intrinsically safe fieldbus connection in acc. with FISCO, intrinsically safe connection of the digital output
Operating values
Type of protection Ex i, IS and FISCO
Inputs and outputs
U
N
[V]
I
N
[mA]
U
i
[V]
I
i
[mA]
P
i
[mW]
C
i
[nF]
C
iPA
[nF]
L
i
[µH]
Passive digital output DO2 (terminals 41 / 42)
30 220 60 200
1)
5000
1)
3,6 3,6 0,17
Fieldbus (terminals 97 / 98)
32
30
17
380
5320
1
1
5
1)
Intrinsically safe single-channel or multi-channel barriers (supply isolators) with resistance characteristic must be used.
Variant 2: Intrinsically safe fieldbus connection (not in acc. with FISCO!), intrinsically safe connection of the digital output
Operating values
Type of protection Ex i, IS
Inputs and outputs
U
N
[V]
I
N
[mA]
U
i
[V]
I
i
[mA]
P
i
[mW]
C
i
[nF]
C
iPA
[nF]
L
i
[µH]
Passive digital output DO2 (terminals 41 / 42)
30 220 60 200
1)
5000
1)
3,6 3,6 0,17
Fieldbus (terminals 97 / 98)
32
30
60
500
5000
1
1
5
1)
Intrinsically safe single-channel or multi-channel barriers (supply isolators) with resistance characteristic must be used.
Variant 3: Fieldbus connection in acc. with FNICO (Zone 2, Div. 2), connection of digital output (Zone 2, Div. 2)
Operating values
Type of protection Ex n, NI and FNICO
Inputs and outputs
U
N
[V]
I
N
[mA]
U
i
[V]
I
i
[mA]
P
i
[mW]
C
i
[nF]
C
iPA
[nF]
L
i
[µH]
Passive digital output DO2 (terminals 41 / 42)
30
220
- - - - - -
Fieldbus (terminals 97 / 98)
32 30 60
500
1)
5000
1)
1 1 5
1)
Single-channel or multi-channel barriers (supply isolators) with resistance characteristic must be used.
All inputs and outputs are electrically isolated from each other and from the supply power.
Note
The output circuits are designed in such a way that they can be connected to both intrinsically-safe and non-intrinsically-safe circuits. It is not
permitted to combine intrinsically safe and non-intrinsically safe circuits. In the case of intrinsically safe circuits, potential equalization is
required.
The rated voltage of the non-intrinsically safe circuits is UM = 60 V. Provided that rated voltage UM = 60 V is not exceeded if connections are
established to non-intrinsically safe external circuits, intrinsic safety is still given.
If the installation is changed from type of protection "non-intrinsically safe" to "intrinsically safe" or vice versa, the device must be checked in
accordance with the instructions contained in section 7.4 "Changing the type of protection".
Summary of Contents for FEP315
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