ENDRESS HAUSER FMR255 User Manual

FISCO-Concept  
HAZARDOUS (CLASSIFIED) LOCATION  
NON HAZARDOUS LOCATION  
The FISCO Concept allows interconnection of intrinsically safe apparatus to associated apparatus not specifically examined in  
such combination.  
The criteria for interconnection is that the voltage (Ui or Vmax), the current (Ii or Imax) and the power (Pi or Pmax) which  
intrinsically safe apparatus can receive and remain intrinsically safe, considering faults, must be equal or greater than the voltage  
(Uo or Voc or Vt), the current (Io or Isc or It) and the power (Po or Pmax) levels which can be delivered by the associated  
apparatus, considering faults and applicable factors.  
Class I, Zone 0, IIC  
Class I, Division 1, 2, Groups A, B, C, D  
Class II, Division 1, 2, Groups E, F, G  
Class III, Division 1  
Any FM  
approved  
associated  
apparatus or  
associated  
nonincendive  
field wiring  
apparatus  
In addition, the maximum unprotected capacitance (Ci) and inductance (Li) of each apparatus (other than the termination)  
connected to the fieldbus must be less than or equal to 5 nF and 10 µH respectively.  
In each segment only one active device, normally the associated apparatus, is allowed to provide the necessary energy for  
the fieldbus system. The voltage Uo (or Voc or Vt) of the associated apparatus has to be limited to the range of 14 V to 24 V d.c.  
All other equipment connected to the bus cable has to be passive, meaning that they are not allowed to provide energy to  
the system, except to a leakage current of 50 µA for each connected device.  
suitable for  
FISCO concept  
Separately powered equipment needs a galvanic isolation to assure that the intrinsically safe fieldbus circuit remains passive.  
Ground  
Stud  
Ground  
Stud  
Ground  
The cable used to interconnect the devices needs to have the parameters in the following range:  
Stud (internal)  
I.S. Ground  
Shield  
loop resistance R:  
inductance per unit length L:  
capacitance per unit length C:  
15...150 W/km  
0.4...1 mH/km  
80...200 nF/km  
C = C line/line + 0,5 C line/screen, if both lines are floating or  
C = C line/line + C line/screen, if the screen is connected to one line  
length of spur cable:  
length of trunk cable:  
length of splice:  
£ 30 m  
£ 1 km  
£ 1 m.  
1
-
2
3
1
2
3
1
-
2
+
+
-
+
At each end of the trunk cable an approved infallible line termination with the following parameters is suitable:  
R = 90...100 W  
C = 0...2.2 µF.  
One of the allowed terminations might already be integrated in the associated apparatus.  
The number of passive devices connected to the bus segment is not limited due to I.S. reasons.  
If the above rules are respected, up to a total lenght of 1000 m (sum of the length of trunk cable and all spur cables),  
the inductance and capacitance of the cable will not impair the intrinsic safety of the installation.  
Micropilot FMR 2xx with electronic  
insert for PROFIBUS PA or  
FOUNDATION Fieldbus (FISCO-Model)  
F12  
or  
or  
T12 OVP  
F23  
F12, F23 enclosure  
T12-OVP enclosure  
Intrinsically safe installation  
Intrinsically safe (entity), Class I, Div. 1, Groups A, B, C, D Hazardous Location Installation.  
Ui (Vmax) = 17.5 V  
Ii (Imax) = 500 mA  
Pi (Pmax) = 5.5 W  
Ui (Vmax) = 17.5 V  
Ii (Imax) = 273 mA  
Pi (Pmax) = 1.2 W  
Option (1), only F12, F23:  
Prepared to connect FM  
approved remote display type  
FHX40 from Endress+Hauser  
Any  
FM approved  
Intrinsically  
Safe apparatus  
suitable for  
FISCO Concept  
1. FM approved apparatus must be installed in accordance with manufacturer instructions.  
2. FM approved associated apparatus must meet the following requirements:  
Uo or Voc or Vt £ Ui (Vmax) and Io or Isc or It £ Ii (Imax) and Po or Pmax £ Pi (Pmax).  
3. The maximum non-hazardous area voltage must not exceed 250 V.  
4. The installation must be in accordance with the National Electrical Code NFPA 70 and ANSI/ISA RP 12.06.01  
(except chapter 5).  
<
Ci 5 nF  
=
<
Li 10 µH  
=
<
Leakage current 50 µA  
=
5. Multiple earthing of screen is allowed only, if high integrity equipotential system is realised between the points of  
bonding (see drawing No. 960373-1022 A).  
6. Caution: Use only supply wires suitable for 5 K above surrounding temperature.  
7. Warning: Substitution of components may impair intrinsic safety.  
8. The polarity for connecting + (2) and – (1) is of no importance due to an internal rectifier.  
9. FMR250: Use of scavenge junction.  
Option (2):  
Interconnection with FM  
approved Service Interface  
Commubox FXA193 with ToF-  
Cable from Endress+Hauser  
Any FM approved  
termination with  
R = 90...100 W  
C = 0...2.2 µF  
R
C
It is the users responsibility to use the adequate method by using the scavenge device, like:  
Installation has to be IP-grade 67 resp. IP-grade 65 (IEC/EN 60529), depends on location.  
Scavege pressure > inside pressure at the container, max 10 bar resp. 150 psi.  
At non-scavenge status, a barrier spigot resp. valve must be closed.  
If the valve / spigot is open and no scavenge fluid is present the risk of flammable gas or combustible dust  
releases and flame entrance from outside exists.  
Permissible ambient temperature: Electronic: F12, F23, T12-OVP enclosure –40...+80 °C resp. –40...176 °F  
Temperature Permissible  
Permissible max. ambient temperature of the electronic compartment (Ta)  
FMR250 (Horn or parabolic antenna) FMR255  
Option 20 (Antenna): Option 20 (Antenna):  
10. FMR255: Avoid electrostatic charge at the antenna; (e.g. do not rub with dry cloth; do not install within the filling curtain).  
11. Apparatus with faucet: In case of disconnection of Micropilot M from the faucet (e.g. for maintenance) we recommend to  
secure resp. to close the faucet e.g. with an additional blind flange. The responsibility for applicability of the arrangement  
behooves exclusive the operator.  
class  
max. medium  
temperature  
at the probe  
(process  
with/without  
display  
VU331  
12. T12-OVP housing: The surge protection device (OVP) fulfills the requirements of IEC 60079-14 clause 12.3.  
4, 5 or 6  
D, E, G, H or 92)  
connection)  
Tmed  
Division 2 and Zone 2 installation  
Nonincendive, Class I, Div. 2, Groups A, B, C, D Hazardous Location Installation.  
F12 or T12-OVP  
housing  
F23  
housing  
F12 or T12-OVP  
housing  
F23  
housing  
F12 or T12-OVP  
housing  
F23  
housing  
1. Installation shall be in accordance with NEC using threaded conduits or other wiring methods in accordance with Article 500  
through Article 510. Intrinsic safety barrier not required. Max. supply voltage 33 V. For T-code see table.  
2. Nonincendive field wiring installation.  
The Nonincendive Field Wiring Circuit Concept allowes interconnection of nonincendive field wiring apparatus with associated  
nonincendive field wiring apparatus or associated apparatus not specifically examined in combination as a system using  
any of the wiring methods permitted for unclassified locations, when Vmax ³ Voc or Vt, Ca ³ Ci + Ccable, La ³ Li + Lcable.  
Transmitter non incendive field wiring parameters for these current controlled circuit are as follows:  
Vmax = 33 V; Ci £ 5 nF; Li £ 10 µH; Imax = see note 3.  
T6  
T5  
T4  
+
+
80 °C  
60 °C  
+55/50 °C  
+60/55 °C  
+55/50 °C  
+60/55 °C  
+55/50 °C  
+60/55 °C  
+55/50 °C  
+60/55 °C  
+55/50 °C  
+60/55 °C  
+55/50 °C  
+60/55 °C  
+
+
95 °C  
75 °C  
+70/65 °C  
+75/70 °C  
+70/65 °C  
+75/70 °C  
+70/65 °C  
+75/70 °C  
+70/65 °C  
+75/70 °C  
+70/65 °C  
+75/70 °C  
+70/65 °C  
+75/70 °C  
+130 °C  
80 °C  
+75 °C  
+80 °C  
+70 °C  
+80 °C  
+70 °C  
+80 °C  
+70 °C  
+80 °C  
+70 °C  
+80 °C  
+65 °C  
+80 °C  
+
3. For these current controlled circuit, the parameter Imax is not required and need not to be aligned with parameter Isc and  
It of the associated nonincendive field wiring apparatus or associated apparatus.  
4. Warning: Explosion Hazard - do not disconnect equipment unless power has been switched off or the area is known to be  
Non-Hazardous.  
Warning: Substitution of components may impair suitability for Class I, Division 2.  
T3C  
(functional)1)  
+150 °C  
+ 80 °C  
+73 °C  
+80 °C  
+68 °C  
+80 °C  
+70 °C  
+80 °C  
+68 °C  
+80 °C  
+65 °C  
+80 °C  
+60 °C  
+80 °C  
T3  
+195 °C  
80 °C  
+70 °C  
+80 °C  
+65 °C  
+80 °C  
+65 °C  
+80 °C  
+60 °C  
+80 °C  
---  
---  
+
5. The transmitter is suitable to be installed according the FNICO concept.  
T2, T1  
(functional)1)  
+200 °C  
+ 80 °C  
+70 °C  
+80 °C  
+65 °C  
+80 °C  
+65 °C  
+80 °C  
+60 °C  
+80 °C  
---  
---  
Class II, III installation  
DIP for Class II and III, Div. 1, Groups E, F, G Hazardous Location Installation.  
Note: the applicable temperature of antenna must be within their specified limits  
1) functional means max. permissible process temperature  
1. Installation shall be in accordance with NEC using threaded conduits or other wiring methods in accordance with Article 500  
through Article 510.  
2) special version of horn or parabolic reflector dimensions  
st  
For Installaion acc. -ENTITY- Concept  
see Control dwg. part 960007257  
2. Use a dust tight seal at the conduit entry.  
nd  
T6 and T5 requires for FF-electronic enlarged derating: for ambient; 1 number = PA electronic insert; 2 number = FF electronic insert  
e.g. +60/55 °C expression means: Apparatus with PA electronic insert max. ambient at housing = +60 °C;  
Apparatus with FF electronic insert max. ambient at housing = +55 °C  
Functional ratings:  
These ratings do not supersede Hazardous Locations values Unom £ 33 V, Inom = 15 mA.  

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