Yokogawa AXFA14G/C - Manual (Page 53)

IM 01E20C02-01E 6-24
6. PARAMETER DESCRIPTION
Parameter setting sequence
(for automatic multiple ranges switching)
F0605.EPS
F20: DO Function
Select a function. F21: DIO Function
Select a function.
F23: DIO Active Mode
Select whether DIO output
is to be “Closed/Short Act”
or “Open/Open Act”.
Select a function (Note 1)
No Function: Output is stopped (other functions
may be selected)
Fwd/Rev Rngs(O): Forward/reverse flow rate
measurement
Auto 2 Rngs(O): Automatic 2-ranges switching
Auto 3 Rngs(O): Automatic 3-ranges switching
Auto 4 Rngs(O): Automatic 4-ranges switching
Refer to Table 6.4.1 and set
F20 or F21.
Note 1: "DIO (O)" indicates
DIO function is used for output.
B23: Flow
Span
Forward No.1 range
F30: Forward
Span 2
Forward No.2 range
F31:Forward
Span 3
Forward No.3 range
F32:Forward
Span 4
Forward No.4 range
F33:Reverse
Span 1
Reverse No.1 range
F34:Reverse
Span 2
Reverse No.2 range
F22: DO Active Mode
Select whether DO output
is to be “Closed (On) Act”
or “Open (Off) Act”.
If “instantaneous flow rate % (FR)” is selected for
Display Mode and A10: FLOW RATE (%) is selected
for BRAIN communication, the instantaneous flow rate
% and following symbols will be displayed only for
multiple ranges and forward/reverse flow measurement.
Forward No.1 range: [F1]
Reverse No.1 range: [R1]
Forward No.2 range: [F2] Reverse No.2 range: [R2]
Forward No.3 range: [F3]
Forward No.4 range: [F4]
Set the spans for the ranges to be used.
No.1 range
ϹNo.2 rangeϹNo.3 rangeϹ
No.4 range
10% of No. 1 range
(set using F40)
10% of No. 2 range
(set using F40)
10% of No. 3 range
(set using F40)
Input
100%
No. 1 range No. 2 range No. 3 range No. 4 range
Output
Reverse Forward
Minimum span % within multiple and
forward/reverse (set using F41)
F0606.EPS
Figure 6.4.1 Multiple Ranges and Hysteresis Widths
NOTE
For more details regarding the setting of hyster-
esis width, refer to the description of setting
parameter for F40: Auto Range Hys and F41:
Bi Direction Hys.