Basic Plc Configuration With Profibus Pa; Wiring Setups For Hazardous Area Installations - Siemens Sitrans LR250 Operating Instructions Manual

4. Tighten the gland to form a good seal.
5. Close the lid and secure the locking ring before programming and device
configuration.
Notes:
• PROFIBUS PA must be terminated at both extreme ends of the cable for it to work
properly.
• Please refer to the
2.092), available from www.profibus.com, for information on installing PROFIBUS
devices.
• If a Weidmüller or other current limiting junction box is connected to this device,
please ensure that the current limit is set to 40 mA or higher.

Basic PLC configuration with PROFIBUS PA

active PLC
SITRANS LR250
(PROFIBUS PA)

Wiring Setups for hazardous area installations

There are three wiring options for hazardous area installations:
Intrinsically Safe wiring
•
Non-Sparking/Energy Limited
•
Non-incendive wiring (only for USA/Canada)
•
In all cases, check the nameplate on your instrument, and confirm the approval rating.
7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS
PROFIBUS PA User and Installation Guidelines
PROFIBUS DP
PROFIBUS PA
SITRANS LR250
(PROFIBUS PA)
on page 26
on page 28
PC/laptop
DP/PA
coupler
SITRANS LR250
(PROFIBUS PA)
on page 28
(order number
Page 25