Wiring Setups For Hazardous Area Installations; Intrinsically Safe Wiring - Siemens SITRANS LR250 (HART) Manual De Inicio Rápido

Connecting HART
Typical PLC/mA configuration with HART
power
R= 250 
supply
SITRANS
LR250

Wiring setups for hazardous area installations

There are six wiring options for hazardous area installations. In all cases, check the device
nameplate and process connection tag to verify the approval rating.

1. Intrinsically Safe wiring

Device nameplate (ATEX/IECEX/INMETRO/C-TICK)
SITRANS LR250
7MLxxxx-xxxxx-xxxx-
BOX 1
Serial No: GYZ / S1034567
Encl.: NEMA / TYPE 4X, 6, IP67, IP68
Amb.Temp.: – 40°C to 80°C
Power Rating: 24 V Nom., 30 V
Siemens Milltronics Process Instruments, Peterborough
Assembled in Canada with domestic and imported parts
The ATEX certificate listed on the nameplate can be
downloaded from the product page of our website at: www.siemens.com/LR250. Go to
Support > Approvals / Certificates.
The IECEx certificate listed on the nameplate can be viewed on the IECEx website. Go to:
http://iecex.iec.ch and click Certified Equipment, then search for the certificate number
IECEx SIR 05.0031X.
1)
Total loop resistance = cable resistance plus 250 Ohm (resistor).
2)
Curve 1: General Purpose, Intrinsically Safe, Non-sparking, Non-incendive
See either
Curve 2: Flameproof, Increased Safety, Explosion-Proof
Page EN-12 SITRANS LR250 (HART) – QUICK START MANUAL
active PLC
HART
modem
HART
communicator
HART
KCC-REM-S49
SITRANSLR
Max., 4 - 20 mA
1) 2)
Notes:
• Depending on the system design,
the power supply may be sepa-
rate from the PLC, or integral to it
• HART resistance
ited according to the allowable
operating area
II 1 G D
Ex ia IIC T4 Ga
Ex ia ta IIIC T100°C Da
SIRA 06ATEX2358X
OCP 0017
IECEx SIR 05.0031X
Ex ia IIC T4 Ga
Ex ia ta IIIC T100°C Da
IP65/IP67
WARNING: Use Cable Rated > 100°C
DNV 12.0087 X
ATENÇÃO - RISCO POTENCIAL DE CARGA ELETROSTÁTICA - VEJA INSTRUÇÕES
- UTILIZAR CABOS ADEQUADOS PARA TEMPERATURAS > 100°C
on page 26.
1)
must be lim-
2)
.
U i = 30 V
I i = 120 mA
P i = 0.8 W
0891
C i = 15 nF
L i = 0.1 mH 0518
on page 25 or
A5E31997170