24
Character
Factory Default
Setting Item, Function, Setting Range
A2 HOLD function
• Enables/Disables the A2 HOLD function.
Not available if No alarm action is selected in [A2 type].
Not available if Insulated power output (P24 option or P5 option) is ordered.
• If A2 HOLD function is set to “Enabled”, and if the alarm is ON, the alarm output
ON status will be maintained until the following is conducted.
• The FAST key is pressed for approx. 3 seconds.
• The power is turned OFF.
• The HOLD is cancelled by the Event input function.
During A2 HOLD, the A2 action indicator flashes.
•
: Disabled
: Enabled
A3 HOLD function
• Enables/Disables the A3 HOLD function.
Not available if No alarm action or High/Low limit range alarm is selected in [A3 type].
• If A3 HOLD function is set to “Enabled”, and if the alarm is ON, the alarm output
ON status will be maintained until the following is conducted.
• The FAST key is pressed for approx. 3 seconds.
• The power is turned OFF.
• The HOLD is cancelled by the Event input function.
During A3 HOLD, the A3 action indicator flashes.
•
: Disabled
: Enabled
A4 HOLD function
• Enables/Disables the A4 HOLD function.
Available when Alarm 4 output (A4 option) is ordered.
Not available if No alarm action is selected in [A4 type].
• If A4 HOLD function is set to “Enabled”, and if the alarm is ON, the alarm output
ON status will be maintained until the following is conducted.
• The FAST key is pressed for approx. 3 seconds.
• The power is turned OFF.
• The HOLD is cancelled by the Event input function.
During A4 HOLD, the A4 action indicator flashes.
•
: Disabled
: Enabled
Square root function
• Enables/Disables the square root extraction function.
• Indication value or square root extraction value is expressed by the formula below.
PV
V
P
PV': Indication value, square root extraction value
PV: Process variable
•
: Disabled
: Enabled
Low level cutoff
• Sets the low level cutoff value.
• When PV input is near 0 (zero),
the result of square root extraction
changes considerably with only
a very small change of input.
In this case, the PV is forced to
become 0 (zero).
If PV input is lower than the low level
cutoff value, the PV will become 0.
• Setting range: 0.0 to 25.0% of input
range
(Fig. 5.4-3)
20
1.0% of input range (4.16 mA)
(e.g.) Input: 4-20 mA DC, Scaling range: 0-100
Low level cutoff: 1.0%
In this case, PV becomes 0 if it is lower than 1.0%.
Input (mA)
100
0
4
10
Indication
value
