metso automation kajaaniMCAi, Инструкция по установке, эксплуатации и обслуживанию

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kajaaniMCA i – Installation, Operating & Service
- 12.2 -
W4610201 V2.5 EN
If all functions of a menu cannot be displayed at the
same time, a downward arrow symbol will appear in the
bottom left corner of the display. Press the DOWN
arrow key to scroll all functions on the display.
12.A. Starting up
NOTE: The process must be runnin in normal status
when the device is started up! After powering on, allow
the unit to warm up for 3 hours before start-up.
NOTE: Before start-up, do Master Reset to the MCA
i
sensor.
Master Reset procedure: Select D
IAGNOSTICS
. Then
select M
ASTER
R
ESET
and press [F4] OK to clear the
messages that appear on the display. When Master
Reset is complete the HART communicator will show
the text: “Master reset OK. Do the start up in the
Detailed Configuration menu”. Press [F4] OK to ac-
cept.
Then select C
ONFIGURATION
=> D
ETAILED CONFIGURA
-
TION
, and the display shown in Fig. 12.3 will appear.
Configure the correct settings in fields 1...4.
Temp. units
Select the required temperature unit, °C or °F.
Signal level
Target signal level during start-up, default 60 u (unit).
The signal level should remain in all process conditions
within the range 20...80 u.
It may be necessary to change the target signal level
if large chemical content or temperature variations
occur in the process. A higher chemicals content will
lower the signal level, and a lower temperature has the
same effect. If such changes are likely to take place in
the process, the signal level must be set closer to the
high limit (80 u) to make sure that it remains within the
correct range also during process variations. Similarly,
a lower chemicals content and higher temperature will
push the signal level upwards. If such changes are likely
to take place in the process, the signal level must be set
closer to the low limit (20 u) to make sure that it remains
within the correct range also during process variations.
Date & Time
Set the correct date and time for the timing of calibra-
tion samples.
Use the SEND command to send the configured data
to the MCAi. If “Prev” was selected as the sensor type,
the MCAi will read the previous calibration from
memory and thus does not require a new calibration.
If another sensor type than “Previous” was selected,
select next D
O
S
TART
U
P
. The MCAi will first ask you
to confirm the selected sensor type and target signal
level. If these are correct press OK, otherwise press
ABORT and select the correct settings. When OK is
pressed, the MCAi will first adjust the signal level as
close as possible to the set target and display the
achieved signal level. Press again OK to accept, and the
MCAi will initialize the measurement; this takes about
1–2 minutes. The percentage running on the screen
indicates the progress of initialization. When the initial-
ization is complete, the device prompts you to calibrate
it and to scale the current output. Complete these steps
as instructed in the following sections, and after this the
MCAi is ready for operation.
MCAi: MCAI-000
Detailed Config
HELP SAVE HOME
degC
60.0 u
Sensor Type
Temp.Units
Sign.Level
Date & Time
Do Start Up
1
2
3
4
5
Fig. 12.3. Configuration menu.
Sensor type
If necessary, check the sensor type from the device
plate. The last alternative in the list is Prev (Previous).
When this option is selected, the MCAi will read the
previous start-up and calibration from memory. Use
this option only after a software update, when there is
no need to repeat the start-up and calibration procedure.
When starting up a new sensor, make sure to select
the correct sensor type – in this case the previous start-
up was made during final testing and it does not
correspond to the actual process conditions!