Troubleshooting - Siemens SITRANS F US SONOFLO Handbook

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SITRANS F US SONOFLO

Troubleshooting

Symptom Error code Error relay
Empty display None
No flow
signal
None
1 1 )
2
3
4
5 1 ) 5 )
6
7
8
9 1 )
10
11
12
13 1 )
14
15
16
17
18
19
20
51
110
111
121
125
126
68
69
70
84
85
21
22
23
24
33
34
25
No flow 26 Force output
signal as defined in
FORCED
CONTROL
27
30
31
40
41
42 4 )
50
60 2 )
61
62
64 2 )
65
66
80 2 )
81
82 3 )
83
100 4 )
1)
Lowest number: track 1
2)
Lowest number: current output no. 1
3)
Lowest number: frequency/pulse
output no. 1
9. Troubleshooting
Cause
ON 1. Supply voltage
2. SONO 3000 defective
OFF 1. Current output deselected
2. Frequency/pulse output deselected
OFF Reverse flow direction
ON The converter rejects the received
signals
Max. amplification exceeded
(> 60 db)
ON 1. Sensor cable not connected
2. Mismatch of tranducer and liquid
ON 1. This error code and a high gain
(> 60 dB) indicates a too weak
received signal.
(Alarm if signal level gets below
500 mV). See SERVICE MENU
2. Unstable flow signal caused by gas
bubbles in the liquid.
ON Internal error
Function and
communication check
OFF Error during zero adjustment.
The meter detects flow in the pipe.
ON Actual sound velocity outside the
measuring range.
Hardware fault
ON 1. Defective power supply
2. Supply voltage too low
Fatal measuring error
Error due to volume flow
exceeding Q
max.
®
ON SENSORPROM unit defective
Wrong sensor version
ON Error in data exchange with
®
SENSORPROM unit
®
OFF No SENSORPROM unit
ON Value of internal totalizer not valid
(Check sum error)
ON 1. No load or load exceeds
specifications of the current output
2. SONO 3000 defective
ON Current output
exceeds 24 mA
ON Frequency output
exceeds 12500 Hz
ON Pulse width on frequency output
exceeds 50% of duty cycle
OFF "Power on" indication.
This is not an error.
4)
No error
5)
Lowest number: transducer A
SFIDK.PS.029.V3.02 - 521H0553
Remedy
1. Check supply voltage and voltage selector
2. Replace SONO 3000
1. OUTPUT SETUP in the menu
2. OUTPUT SETUP in the menu
Select direction definition (BASIC SETTINGS)
1. Check cable connections
2. Check transducers manually by means of an oscilloscope.
Please contact Siemens Flow Instruments
Switch off the power supply shortly to reset the signal converter.
If the fault is consistent, replace the converter
Ensure zero flow condition in the pipe
Check the setting of track length and min. and max. sound velocity
SONO 3000 defective
Replace the signal converter
1. Replace SONO 3000
2. Check supply voltage
Usually appearing with other codes. Remove the cause of error
until the code disappears.
Increase Q in the menu.
max.
®
Remove the SENSORPROM unit. Enter settings manually.
Restart the converter
1. Check cables and connections
2. Replace the signal converter
Check max. settings in BASIC SETTINGS
Check max. settings in BASIC SETTINGS
Select a shorter pulse width
53