kajaaniMCA
i
– Installation, Operating & Service - 6.3 - W4610201 V2.5 EN
F7
F6
F5
F4
F8
F3
F1
F2
F9
F10
F11
F12
F13
F14
F15 F16
i
Fig. 6.6. Current output 1, consistency.
CURRENT OUTPUT 1: consistency
Low (4 mA) High (20 mA)
= 0.00 % = 5.00 %
Filtering Error situation:
= 1.0 s 20 mA
Cs = 3.51 %
...9.62 mA
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F7
F6
F5
F4
F8
F3
F1
F2
F9
F10
F11
F12
F13
F14
F15 F16
i
Fig. 6.7. Current output 2, temperature.
CURRENT OUTPUT 2: temperature
Low (4 mA) High (20 mA)
= 0.00 °C = 90.00 °C
Filtering Error situation:
= 1.0 s 20 mA
Cs = 75.4 °C
... 16.05 mA
Edit Next
The MCAi Field Connection Board contains current
outputs for consistency, temperature, and the relative
chemical content measurement. Current output 2 is
isolated, current output 3 non-isolated. A current output
for consistency is also provided among the connections
on the Display Unit.
After initial configuration and calibration, the cur-
rent output scaling is still UNDONE. Go from Main
Menu => Current Output, and scale the outputs.
6.B.1. Scaling the current output for consistency
Go from MAIN MENU => CURRENT OUTPUT (Current
output 1, Fig. 6.6). Press [F1&F2] E
DIT to edit.
1. Enter the consistency value corresponding to the
low limit (4mA).
2. Enter the consistency value corresponding to the
high limit (20mA).
3. Enter the filtering time for the output (usually 1
second is suitable).
4. Select how the current output will react to error
situations, by pressing [F7&F8] R
OLL ALARM until
the required alternative appears:
- Freeze:when an error occurs, the value is frozen to
the level prior to the error.
- 0, 4 or 20 mA: the output is set to 0, 4 or 20 mA.
5. Press [F3&F4] S
AVE to save the changes.
NOTE: Step 4, current output value during errors, is set
to all three outputs at the same time, in the “Current
Output 1” display!
6.B. Current Output Scaling
6.B.2. Scaling the current output for temperature
Go from MAIN MENU => CURRENT OUTPUT => NEXT
(Current output 2, Fig. 6.7). Press [F1&F2] EDIT to edit
the output.
1. Enter the temperature value corresponding to the
low limit (4mA).
2. Enter the temperature value corresponding to the
high limit (20mA).
3. Enter the filtering time for the output (usually 1
second is suitable).
4. Press [F3&F4] S
AVE to save the changes.
NOTE: If required, the outputs 2 & 3 can be switched so
that current output 2 is scaled for chemical content,
output 3 for temperature. To do this, press N
EXT =>
[F5&F6] TEMP -> CHEMICALS.
NOTE: Current output 2 is isolated, current output 3 non-
isolated.
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