B: Troubleshooting

General Fault Codes/PROFIBUS PA Extended Diagnostics

Note: Some faults cause the device to go to Fail-safe mode. These are indicated with an asterisk (*).

LCD

 

Meaning

Corrective Action

Byte

Bit

display

 

 

 

 

 

 

 

 

Loss of Echo (LOE) condition:

Ensure installation details

 

 

 

 

the device was unable to get

are correct. Ensure no

 

 

 

 

a measurement within the

material buildup. Adjust

 

 

S:0

*

Fail-safe timer period.

process conditions to

 

0

 

 

Possible causes: faulty

minimize foaming. If problem

 

 

 

 

installation, material buildup,

persists, contact your local

 

 

 

 

and/or presence of foam.

Siemens representative.

 

 

 

 

 

 

 

 

 

 

 

Reset power. If fault persists,

 

 

S:2

*

Internal electronics failure.

contact your local Siemens

 

2

 

 

 

representative: repair

 

 

 

 

 

required.

 

 

 

 

 

 

 

 

 

 

Device is nearing its lifetime

Replacement is

 

 

S:3

 

limit according to the value

recommended.

 

3

 

set in Maintenance Required

 

0

 

 

 

 

 

 

Limit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Device is nearing its lifetime

Replacement is

 

 

S:4

 

limit according to the value

recommended.

 

4

 

set in Maintenance

 

 

 

 

 

 

 

 

 

Demanded Limit.

 

 

 

 

 

 

 

 

 

 

 

Sensor is nearing its lifetime

Replacement is

 

 

S:6

 

limit according to the value

recommended.

 

6

 

set in Maintenance Required

 

 

 

 

 

 

 

 

 

Limit.

 

 

 

 

 

 

 

 

 

 

 

Sensor is nearing its lifetime

Replacement is

 

 

S:7

 

limit according to the value

recommended.

 

7

 

set in Maintenance

 

 

 

 

 

 

 

 

 

Demanded Limit.

 

 

 

 

 

 

 

 

 

Page B-80

SITRANS LR 460 – INSTRUCTION MANUAL

7ML19985JM01

Page 86
Image 86
Siemens LR 460 instruction manual General Fault Codes/PROFIBUS PA Extended Diagnostics