Siemens SITRANS LR200 Kurzanleitung Seite 11

Device nameplate (FM/CSA)
FM Intrinsically Safe connection drawing
number A5E01003040 and CSA Intrinsically Safe connection drawing number A5E01003039
can be downloaded from the product page of our website at: www.siemens.com/LR200.
Go to Support > Installation Drawings > Level Measurement > Continuous - Radar.
• For power demands see
Energy Limited/ Non-incendive
• For wiring requirements: follow local regulations.
• Approved dust-tight and water-tight conduit seals are required for outdoor NEMA 4X /
type 4X / NEMA 6, IP67, IP68 locations.
Instructions specific to hazardous area installations
• Refer to
certificate listed above.
• Recommended intrinsically safe barriers are listed under
Active barriers (repeating barriers)
on page 9 and
Selecting a suitable PLC input module, power supply, or barrier requires knowledge
Note:
about Intrinsic Safety and the application. It is the responsibility of the installer to ensure that
the intrinsically safe installation complies with both the apparatus approval requirements and
the relevant national code of practice.
Passive Shunt Diode Barriers
A well regulated supply voltage is required.
Note:
Manufacturer
MTL
MTL
Stahl
Stahl
How to select a passive barrier for SITRANS LR200
To make sure that the barrier safety description is suitable for the LR200 Intrinsically Safe (IS)
input parameters, carry out the following calculations:
Re-e = max. end-to-end resistance of the barrier
Rloop = loop resistance (total of cable resistance plus any additional series
resistance, for example, PLC inputs and/or displays)
Vbarrier = value of any non-linear voltage drops due to the barrier
1) Determine the value for Re-e from the data sheet.
2) Calculate the total value for Rloop.
A5E31993614
Curve 1: General Purpose, Intrinsically Safe, Non-Sparking/
on page 21.
Part Number
787SP+ (Dual Channel)
7787P+ (Dual Channel)
9001/01-280-100-10 (Single Channel)
9002/01-280-110-10 (Dual Channel)
SITRANS LR200 (HART) – QUICK START MANUAL
on page 12 and the ATEX
Passive Shunt Diode Barriers
on page 10.
Page EN-9