ABB MAG-SM, Инструкционный бюллетень

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35
Electromagnetic Flowmeter Converter
6. Maintenance
6.1 General
6.2 Testing the Converter with the Flowmeter
Primary Simulator 55XC4000
The test procedure is described in the Flowmeter Primary
Simulator Instruction Bulletin. Part No. D184B049U01.
Only trained personnel should conduct the tests.
6.2.1 Maintenance
The converter is maintenance free.
!
Note:
Please observe the “Introductory Safety Notes for the
EMF System” if a converter must be returned to the fac-
tory for repairs.
!
Service Note:
For replacement or repair, only original replacement
parts should be used.
6.3 Error Messages and Checks
6.3.1 Error Messages by Priority
In the list below Error Codes shown in the display are
described. (These Error Codes occur only during data entry).
!
WARNING:
The are electrostatic sensitive parts on the
circuit boards (observe EGB-Guidelines)
Error No. Clear Text Cause Corrective Measures
4 EXT.ZERO RETURN Ext. zero return contact active Open contact between terminals U22/22 or G2/22.
5 EEPROM DEFEcT
NVRAM loaded Data in EEPROM corrupted Install replacement converter, check defective converter (see Test
Converter), readjust or return to factory.
0 EMPTY PIPE Pipeline not full Fill pipeline.
2 REF TOO SMALL Pos. or neg. reference too
small Check installation (signal cable). Set switch S901 correctly. Measure
reference voltage at converter (3 to 16 or 6 to 7).
7 REFp TOO LARGE Positive reference too large Select the correct flowmeter primary type in converter. See Page 19
check installation.
8 REFn TOO LARGE Negative reference too large
1 A/D SATURATED A/D-Converter saturated Check ground (flowmeter primary). Check signal cable.
3 FLOWRATE > 130 % Flowrate greater 130 % Increase flow range. (Q
max
).
Error Code Cause
10
11 Entry >1.00 Range
max
(>10 m/s)
Entry <0.05 Range
max
(<0.5 m/s)
13
16
17 Range
max
≤
0
Entry >10 %Low flow cutoff
Entry <0 % Low flow cutoff
20
21 Entry
≥
100 sec. Damping
Entry <0.1 sec. Damping
22 Entry >99 Instrument address
38
39 Entry >1000 Pulses/Units
Entry
≤
0.001 Pulses/Units
40 Maximum frequency scaled
pulse output >10 kHz
42
43 Entry >2000 ms Pulse width
Entry <0.032 ms Pulse width
44
45 Entry >5.0 g/cm
3
Density
Entry <0.01 g/cm
3
Density
54 System zero >1500 Hz
74 Entry >130 % Max. Alarm
76 Entry <130 % Min. Alarm