KROHNE BM 90 EN - Manual (Page 15)

15
3. Programming
The Level-Sonic BM90 has two modes :
a) RUN (normal operating)
b) PROG (programming)
In the ‘RUN‘ mode, the instrument is monitoring the tar-
get, displaying values and setting outputs as pro-
grammed by the operator.
In the ‘PROG‘ mode, the operator uses the keypad in
conjunction with the display to adjust the settings and to
test that the unit is programmed correctly.
3.1. Keypad definitions
The keypad consists of 20 keys which are used to con-
trol the operation of the converter.These keys also have
secondary functions indicated above them (See Figure
5) enabling the operator to view the results being
obtained by the instrument during its normal ’RUN’ cycle.
3.2. Display Descriptions
The following display codes are used :
P R O G
R U N
Pr.XX
C O dE
====
FULL
-FUL
P.rES
t.rES
LOSt
tESt
gAIN
H E A d
F L O
HI.tO
LO.tO
deG.C
dISt
An.OP
Precedes program mode
Precedes run mode
Parameter number
Security code request
No value
Numerical overflow of display
i.e. value too large to display
Negative numerical overflow
Check taht Pr.43 is correct
Resetting to factory parameters
Resetting totalizer
Loss of echo
System performing a requested test
Gain value being displayed
Head
Flow
Totaliser high 4 digits 9999 (----)
Totaliser low 4 digits (----) 9999
Temperature C
Distance
Analogue output
Primary Key Functions
Active Secondary Key Functions
During normal ’RUN’ mode it is possible for an operator
to obtain the data defined as secondary function without
interrupting normal operation, by pressing the appropri-
ate key, i.e.
Key 7
Key 8
C E
Key 9
Key 0
.
_
’s’
Test
E N T
D S P
’t’
Relay 3. Hours energised.
Relay 4. Hours energised.
Relay 5. Hours energised.
Relay 1. Number of times energised.
Relay 2. Number of times energised.
Relay 3. Number of times energised.
Relay 4. Number of times energised.
Relay 5. Number of times energised.
Displays gain
Displays mA output.
Displays distance from the transducer face.
Displays temperature.
Keys 1 - 4
Key 5
Key 6
Show high totaliser, low totaliser, head and
flow when in the OCM mode. Head will
always show level.
Relay 1. Hours energised.
Relay 2. Hours energised.
0 - 9
.
-
C E
#
M O D E
TEST
’s’
’t’
D S P
E N T
Numerical Values
Decimal Point
Negative value (also used to slow down
simulation)
Clear Entry (also used to leave test func-
tions Pr.75 to Pr.78.)
Returns display to normal ’RUN’ mode
after viewing secondary functions (also
speeds up simulation Pr.78)
Alternates between ’RUN’ and ’PROG’
mode.
Displays gain in ’RUN’ mode and allows
parameter interrogation and simulation
hold in ’PROG’ mode.
Increase parameter number (also control
of simulation direction).
Decrease parameter number (also control
of simulation direction)
Display parameter number/value alter-
nately.
Enter a new value or initiate a system test
under Pr.75 to Pr.78