Supplementary Documentation
Page 43 of 44
IFC090, IFC090 i with FF
Troubleshooting
IFC090 FF 01/2005
KROHNE Messtechnik GmbH & Co. KG · Ludwig-Krohne-Str. 5
D-47058 Duisburg
Tel.: 0203-301 309
Fax: 0203-301389 · E-mail: [email protected]
6.1.3
Analog Input Block
The follwowing table lists the block errors documented by the Analog Input Block:
Error Code
Description
Action
Out of Service
Target mode is set to
‘Out of Service (OOS)’
If Automatic is the desired target mode, set
MODE_BLK
target to
‘Automatic (Auto)’
.
‘Block
Configuration
Error’
is also set
See
‘Block Configuration Error’
description below.
Block
Configuration
Error
Value of
CHANNEL
≠
1
Set the value of CHANNEL to 1.
Value of
L_TYPE
is
unspecified.
Set value of
L_TYPE
to
‘Direct’
,
‘Indirect’
, or
‘Indirect Square
Root’
.
NOTE:
If set to ‘Indirect’ or ‘Indirect Square Root’, don’t forget to
configure parameter
OUT_SCALE
!
Unit of
XD_SCALE
is
not equal to unit of
Transducer Block
parameter
PRIMARY_VALUE_R
ANGE
Set the unit of
XD_SCALE
to the same unit as
PRIMARY_VALUE_RANGE
.
NOTE:
Since the unit of
PRIMARY_VALUE_RANGE
is fixed to
m
3
/s
,
this always must be
m
3
/s
.
Some IFC090 measurement problems can be read from the Analog Input Block parameter OUT status. The
following table lists (almost) all of the Analog Input OUT statuses that are mapped to IFC090 (Precondition:
Analog Input Block is configured and target mode is set to Automatic, see 5.3):
OUT status
Description
Action
Good:NonSpecific:NotLi
mited
No IFC090 problem
detected
n/a
Bad:NonSpecific.NotLi
mited
Old measurement
value. The value has
not been updated for
a long period of
time.
Normally, this status will disappear after a short period. If not,
replace signal converter or contact KROHNE service.
Bad:ConfigurationError:
NotLimited
Analog Input Block
configuration is
incorrect.
Check parameters CHANNEL, L_TYPE and XD_SCALE.
Configure them as described in 5.3.
Bad:DeviceFailure:NotL
imited
Bad:DeviceFailure:Con
stant
AD converter error.
Replace signal converter or contact KROHNE service.
Bad:SensorFailure:Con
stant
Measured value is
outside of sensor
range.
Check instrument parameters and correct it if necessary. Error
messages deleted automatically.
Bad:OutOfService:NotLi
mited
Actual mode is Out
of Service.
Check the target mode and ensure that it is set to ‘Auto’ mode.
Pipe is empty
Fill the pipe with media.
Uncertain:NonSpecific:
NotLimited
AD converter
overshooted.
Check instrument parameters and correct it if necessary. Error
messages deleted automatically.
