Azbil MCB10A, User Manual

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Operation using the data setting device Azbil Corporation
5-12 Model MCB10A
5-5-1 : Changing setting of damping time constant
Damping means a response time of the primary time lag (63.2% response) for a step
response of the flow rate. If the out fluctuations are large, increase the damping. A
large damping value stabilizes the output but lowers the response performance. We
suggest setting the damping to the largest value the system can accept.
Input of step response Output of response
63.2%
Damping (s)
MCB
Figure 5-1 Damping output characteristics
Set the damping time constant in accordance with the following procedure:
Step Procedure Screen
1 The screen at right is a screen display example
in MEASURING MODE (measurement state).
Press the MODE key.
20.0 %
01.94 m 3 /h
00069401
2 The OPERATOR'S MODE screen appears
for approx. two seconds and then the damping
setting screen appears.
20.0 %
* OPERATOR'S
MODE
20.0 %
* DAMPING
005.0 s
3 Press the
g
key until the cursor is at the value
to be changed. In this example, the key is
pressed three times to move to the position
“5.”
20.0 %
* DAMPING
005.0 s
4
Press the
h
or
i
key to display a time constant
to be changed. In this example, the
h
key is
pressed five times to change the damping time
from 5 seconds to 10 seconds.
20.0 %
* DAMPING
005.0 s
5 Press the
g
key until the cursor is back at the
mode indicator.
Press the MODE key to return to the
MEASURING MODE and to save data.
20.0 %
* DAMPING
010.0 s
CAUTION
You have only ten minutes to return to MEASURING MODE to save the new
value before the system resets it to the previously saved value.