Azbil Micro Flow MQV0005, Руководство пользователя

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5-7
Chapter 5. ADVANCED OPERATION
Display
item
Item Description
Setup Item and
Description
Factory
Setting
Remarks
C-20
Valve amperage
alarm setup
0: Valve amperage alarm
disabled
1: Only upper limit alarm
enabled
2: Only lower limit alarm
enabled
3: Upper / lower limit alarm
enabled
0 Set up the alarm current value in the
parameter setup.
5-2 Parameters (P. 5-12).
C- 2 1
Direct setup func-
tion ON/OFF
0: Function disabled
1: Function enabled
0 SP value being changed (flashing)
is used for control.
C-22
Control dead band
setup
0: Function disabled
1: Function enabled
0 Valve operation stops while the
control flow rate is within the OK
judgment range.
The OK judgment range can be set in
the parameter setup mode.
5-2 Parameters (P. 5-12).
C-23
PV filter
(process for filtering
of instantaneous
flowrate)
0: Without filter
1: Two samplings moving
average
2: Four samplings moving
average
3: Eight samplings moving
average
0 If the PV filter is used at a "2" or "3"
setting, the operational differential
pressure must be lower than the
standard differential pressure.
Do not change the setting while
control is in progress.
C-24
Flow rate range
setup 1
0: Standard range
10 to 99: 10% to 99% of stan-
dard range. (When
calculating the range
reduction, the value
is cut off at the least
significant digit.)
-10 to -99: 10 % to 99 % of stan-
dard range. (When
calculating the range
reduction, the value is
not cut off at the least
significant digit.)
0 The setup and display resolution lev-
els can be improved by reducing the
flow rate range.
5-4 Flow Rate Range (P. 5-18).
If a value of 10 to 99 is set, the value
is cut off at the least significant
digit when calculating the range
reduction.
Example:
Standard range = 30.0 L/min. and
range setup = 67
Calculation formula:
30.0 x 0.67 = 20.1
→
Since the value is cut off at
the least significant digit, the
flow rate range becomes 20.0 L/
min.
The range selected by
C- 25
be-
comes active if "11" is selected for
assignments
C-1 0
to
C-1 2
(external
contact input function assignment)
and only when the objective contact
is turned ON.
However, the range selected by
C-
24
becomes active otherwise.
C-25
Flow rate range
setup 2
0
C-26
Gas type selection 2 0: Conversion factor for each
gas type set by user
9: Hydrogen
10: Helium
9 This setting determines the gas type
when "10: gas type changeover" is
selected for the external contact
input function assignment (
C- 10
,
C- 1 1
, or
C- 12
) and when the rel-
evant contact is ON. For details, see
the remarks for
C- 10
,
C- 1 1
,
C- 12
and
C- 18
.