User's Manual
Table Of Contents
- 8 Parameter reference
- 9 Service and maintenance
- 10 Diagnosing and troubleshooting
- 11 Technical data
- 12 Dimension drawings
- 12.1 Threaded horn antenna
- 12.2 Threaded horn antenna with extension
- 12.3 Flanged horn antenna
- 12.4 Flanged horn antenna with extension
- 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only)
- 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger)
- 12.7 Threaded PVDF antenna
- 12.8 Threaded connection markings
- 12.9 Raised-Face flange per EN 1092-1 for flanged horn antenna
- 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna
- 12.11 Flat-Face flange
- 12.12 Process connection tag (pressure rated versions)
- A Appendix A: Technical reference
- B Appendix B: HART communications
- C Appendix C: Certificates and support
- 13 List of abbreviations
- 14 LCD menu structure
- Glossary
- Index
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
171
Diagnosing and troubleshooting
10
10.1
Communication troubleshooting
1. Check the following:
– There is power at the device.
– The LCD shows the relevant data.
– The device can be programmed using the handheld programmer.
– If any fault codes are being displayed see General Fault Codes (Page 174) for a detailed
list.
2. Verify that the wiring connections are correct.
3. See the table below for specific symptoms.
Symptom
Corrective action
The device cannot be programmed via the
handheld programmer.
• Ensure
Write Protect (6.2.1.)
is set to the unlock
value.
You try to set a SITRANS LR250
parameter via remote communications but
the parameter remains unchanged.
• Ensure
Write Protect (6.2.1.)
is set to the unlock
value, then try setting the parameter via the handheld
programmer.
• Ensure
Access Control (6.1.1.)
is set to Read/ Write.
• Some parameters can be changed only when the
device is not scanning. Try pressing Mode
to put
the device into PROGRAM mode.
If you continue to experience problems go to our website and check the FAQs for SITRANS
LR250:
Product page (http://www.siemens.com/LR250
), or contact your Siemens representative.