I+500 through article 510.

I-O+ O-L PE N
L+ PE L-B

NONINCENDIVE Field WIRING CONNNECTION TO Class I, II, III / Div. 2 / Groups ABCDEFG- The device is an Associated Nonincendive safe equipment and must be installed only in nonhazardouslocations.
- The Nonincendive Field Wiring Circuit Concept allows interconnection of Nonincendive Field Wiring
Apparatus with Associated Nonincendive Field Wiring Apparatus or Associated Intrinsically Safe
Apparatus or Associated Apparatus not specifically examined in combination as a system using any of thewiring methods permitted for unclassified locations, when Voc £ Vmax, Ca ³ Ci + Ccable, La ³ Li + Lcable.
- For entity installations use certified equipment that satisfy the following condition
Uo/Voc £ Vmax/Ui Io/Isc £ Imax/Ii Po £ Pi
Co/Ca ³ Ci + Ccable Lo/ La ³ Li + Lcable

Temperature range-20°C ... +50°C
Class I, II, III, Div. 1+2, Groups ABCDEFG
Cl. I, Zone 0 [AEx ia] IIC
Class I, II, III, Div. 2, Groups ABCDEFG
L/L+N/L

20 ... 250VDC/AC 50/60Hz

O+OH

O-4 ... 20mA

CC

SupplyGround PE
Output(HART Communication)

BINTRINSICALLY SAFE CONNECTION TO
Class I, II, III / Div. 1+2 / Groups ABCDEFG- The device is an Associated intrinsically safe equipment and must be installed only in non-hazardouslocations.
- Installation should be in accordance with ANSI/ISA RP 12.6.01 “Installation of Intrinsically safe
systems for Hazardous (classified) locations” and the National Electrical Code (ANSI/NFPA 70).
- For entity installations use certified equipment that satisfy the following condition
Uo/Voc £ Vmax/Ui Io/Isc £ Imax/Ii Po £ Pi
Co/Ca ³ Ci + Ccable Lo/ La ³ Li + Lcable- The Terminal of the intrinsically safe circuit must be placed at least a distance of 50mm from terminals ofthe non-intrinsically safe circuits, or adequate separators (e.g. ground metal partitions) must be used.

e.g.
TMT18xANIAA- Use supply wires suitable for 5°C above surroundings.
- Install the device of Protection Ratings of least IP20, NEMA 1, Type 1.
- The active Barrier must be connected to a suitable ground.

e.g.
Commubox
FXA191

ENDRESS+HAUSER

RN 221N

AIS

5Installation Notes RN221N- FM Approved Apparatus must be installed in accordance with manufacturer’s instructions.
- Depending on location install per National Electrical Code (NEC) using wiring methods described in article

RN221NTa

4321

Nonhazardous Locations

Hazardous (Classified) Locations
Class I, Groups ABCDClass II, Groups EFG
Class IIIClass I, Zone 0 Group IIC
Class I, Zone 2 Group IIC

Output (Terminals +I and –I)
Uo or Voc = 27.3 V
Group A, B resp.
Group C
resp.
Group D
resp.

[AEx ia] IIC[AEx ia] IIB[AEx ia] IIA

Io or Isc = 87.6 mA

Po = 597 mW

Co or Ca = 86 nF
Co or Ca = 681nF
Co or Ca = 2278 nF

Lo or La = 2.9 mH
Lo or La = 9.9 mH
Lo or La = 19.9 mH

Pfanzelt
Volume (mm³)

DesignedPfanzelt
Refer to protection notice
ISO 16016

Date (yyyy-mm-dd)

Drawing No.

Date (yyyy-mm-dd)

Dwg.rev.

02 02 00 111

2002-01-15
Unit

Edge of working parts Geometrical tolerancing
ISO 13715
ISO 2768-mH-E

Scale

RN221N

2002-01-15

APart No.

1:1

Revision no.

K05502

Revision date (yyyy-mm-dd)

2005-01-07

NameMP

Material71540236
XA02343R/09/EN/01.20Title

CONTROL DRAWING FM

Format-D

D

Approved

SeriesObjekt version

A4SheetEndress + Hause r
WetzerNesselwang / Germany

1 of 1 GmbH+Co. KG

54321