7.1.7 Setting the Write Protect Setting
Switch
The write protect function, when set to "Protect",
disables overwriting of parameters.
Write protection is switched by either the write
protect switch (2) on the CPU board in the amplifier
or in software parameter settings. If either of these
items is set to "Protect", parameters can no longer
be overwritten.
NOTE
If the setting switch is set to "Protect" on
the hardware, it is not possible to overwrite
parameters. Furthermore, this state is maintained
until the setting switch is set to "Disable".
For details on the write protect function set in
software parameters, read "Software Write Protect"
in the Communications Manual listed in Table 1.1
Related Documents.
Table 7.2
Setting Pin for Write Protect Function
Position of setting pin Write protect function
1
2
O
N
D H
E
WP BOUT
L
Disable
1
2
O
N
D H
E
WP BOUT
L
Protect
7.1.8 Operation at a Power Failure
When a power failure occurs, the totalized value
will be protected by EEPROM (Electrically Erasable
Programmable ROM). However, during a power
failure, the vortex flowmeter does not operate, so
totalizing of totalized values is discontinued.
• The EEPROM does not need a battery for
backup.
After power is recovered, totalizing is resumed
and continues, and the vortex flowmeter
automatically returns to normal operation.
7.2 Adjustment for Manual Mode
Adjustment at startup is not required as the
vortex flowmeter is automatically adjusted so that
disturbance noise such as vibration through piping
is canceled at all times. However, adjust in the
manual mode when there is flowrate output even
though fluid flow is stopped.
7.2.1 Low Cut Adjustment
Adjustment by this function intentionally sets
the low-flowrate range to zero for the purpose of
removing noise.
Set the flowrate value to set the flowrate to zero
at "D10/Flow lowcut". For details on the setting
method, read "Parameter Descriptions" in the
Communications Manual listed in Table 1.1 Related
Documents.
7.2.2 Zero Tuning
Perform this adjustment while referring to Figure 7.3
below.
START
Is it zero flow?
No
No
Stop flow to be zero
Yes
Yes
Wait more than 30 seconds
Ensure the complete of the
tuning function.
Is indication reads zero
at zero flow?
Start the tuning
functios
Retry the tuning and ensure
the pipeline conditions?
Ensure TLA value
in "K10/TLA"
F0703.ai
Set "K51/Tuning at zero"
of "Execute(1)"
Figure 7.3 Tuning Flow
<7. Operation>
41
IM 01F07A01-01EN
Operation
7
